Disconnection method of device for transfer of fluid medium between bottom of water space and surface, and corresponding transfer device

FIELD: oil and gas industry.

SUBSTANCE: device includes pipeline (24) for transfer of fluid medium, tower (16), floating barge (18) installed so that it can be turned around tower (16) about rotation axis (A-A'). Pipeline (24) includes section (150) of a hose, which is wound about rotation axis (A-A') and retained with intermediate structure (20) installed between tower (16) and barge (18) between a configuration of joint rotation together with barge (18) about the rotation axis and a configuration of retention with tower (16) during rotation about rotation axis (A-A'). At the stage of connection of pipeline (24) intermediate structure (20) is installed into one of the configuration of rotation or retention; with that, the disconnection stage of pipeline (24) includes a transition piece of intermediate structure (20) to the other configuration of either rotation or retention.

EFFECT: quick and reliable disconnection so that quick repeated connection of a transfer pipeline is provided.

18 cl, 12 dwg

 

The invention relates to a method of detaching device for pumping fluid between the bottom of the water space and surface, while the pumping device includes:

at least one conduit conveying a fluid medium containing a lower section, an intermediate section, an upper section and a quick disconnect device that is installed between the intermediate section and the lower section or between the intermediate section and the top section;

- tower, in which is located the lower portion, and the tower includes means for mounting in the bottom of the water space;

- a floating barge mounted can be rotated on the turret about the axis of rotation, while the barge is the upper plot,

the intermediate section includes at least one section of the hose is wound around the rotation axis,

the method includes a step junction on which the intermediate section connected or with the lower section or top section using the quick disconnect, and the stage detach containing detach quick detach.

This pumping device is designed to move, in particular, liquid or gaseous hydrocarbons produced in the bottom of the water space, for their delivery to the surface for storage and/or othres is I.

To implement this transfer, as you know, use a device that contains many of the ascending pipeline, referred to by the English term "riser", which take place between the mouths of the wells are located at the bottom of the water space, and surface installation. These ascending pipes are rigid or flexible.

Surface installation is, for example, barge for production, liquefaction, storage and shipment of hydrocarbons, called by the English term "Floating Production Storage and Off-loading Unit" or "FPSO".

Such a device pumping sometimes establish in areas that can seriously deteriorate the weather conditions and where the excitement of the water near the barge can be very strong, in particular, due to winds and currents. Therefore, as is known, the surface system includes a tower, fixed with respect to the bottom of the water space. Stationary tower can be rotated in the mine, made at the end or in the center of the barge. This barge can rotate freely around the tower to get the best position relative to the local movement of water and acting on her strength.

The pipeline moving fluid medium contains the lower portion, which connects the bottom of the water tower, an intermediate portion which passes between the tower and barge, and at the top is the Astok, which takes place on the barge. The lower portion is held within the tower.

Taking into account the swivel connection between the barge and the intermediate tower area contains, for example, a rotating connection or preferably a section of flexible tubing wound loop around the axis of rotation of the barge relative to the tower.

This section of flexible tubing is wound and unwound around the axis of rotation to compensate for differences in angular position between the stationary tower and turning barge.

However, in the event of adverse weather conditions, the pumping device is put in a safe position, fully releasing the rotation of the barge relative to the tower. This requires disconnecting Flex, to avoid damage to the intermediate segment.

In the document US 4915416 describes how to detach the above type in which the lower section of the pipeline pumping disconnect from the drum, rotating relative to the barge, and first lowered using the winch, and then disconnect completely.

However, in this method it is extremely difficult to return the lower portion in place after it is reset.

The objective of the invention is to develop a method of disconnecting the pumping device, which contains the intermediate section with the wound section of the hose, about the connection should be carried out quickly and reliably, providing the possibility of fast reconnection pipeline pumping after disconnecting.

The problem is solved in the above method in which, according to the invention, the pumping device comprises at least one intermediate structure at least partial retention section is wound hose, the intermediate structure installed between the tower and barge between the joint configuration of bringing into rotation together with the barge around the axis of rotation relative to the tower and the configuration of the retention tower in rotation around the axis of rotation,

and during connection of the intermediate structure is placed in one of the configurations of bringing into rotation or retention, and the step of detaching includes the transition of the intermediate structure to another configuration of bringing into rotation or retention.

The method in accordance with the present invention may contain one or more of the following distinctive characteristics, taken separately or in any(s) possible(s) combination(s):

the intermediate structure includes a support wall to hold the wound hose section, performed around the axis of rotation, at this stage of the connection contains the winding and/or unwinding reeled hose section on the supporting wall around surasena during rotation of the barge relative to the tower;

the step of detaching includes moving the intermediate structure translational motion along the axis of rotation to facilitate the transition of the intermediate structure of one of its configurations bring in rotation or hold another of its configurations bring in rotation or retention;

- during phase connection intermediate design takes its configuration deduction;

- during phase connection intermediate design takes its configuration bringing into rotation;

after the step of detaching the barge is in position free rotation around the tower at the ends of the hose section remain essentially stationary in the angular direction relative to each other around the rotation axis.

The object of the present invention is also a device for pumping fluid between the bottom water and surface containing:

at least one conduit conveying a fluid medium containing a lower section, an intermediate section, an upper section and a means of quick disconnect installed between the intermediate section and the lower section or between the intermediate portion of the upper section;

the tower, which paved the lower portion, and the tower includes means for mounting in the bottom of the water space;

- floating bar is, the set can be rotated on the turret about the axis of rotation, while the barge is the upper plot,

the intermediate section includes at least one section of flexible tubing wound around the axis of rotation,

when this pipeline transportation performed with the opportunity to take a connection configuration in which the intermediate section is connected with the lower section or top section using the quick disconnect, and configuration detach quick detach,

contains, according to the invention, the intermediate structure at least partial retention of wound hose section, the intermediate structure is installed between the tower and barge between the joint configuration of bringing into rotation together with the barge around the axis of rotation relative to the tower and the configuration of the retention tower in rotation around the axis of rotation.

The pumping device in accordance with the present invention may contain one or more of the following distinctive characteristics, taken separately or in any(s) possible(s) combination(s):

the intermediate structure includes a support wall retaining wound hose section, performed around the axis of rotation, while the wound section of the hose is at least h is partially on the support wall;

the device contains multiple pipelines transporting fluid, the intermediate structure includes a support wall for wound hose section for each pipeline transportation, while supporting walls arranged one above the other along the axis of rotation;

in the configuration of the connection pipe intermediate design takes its configuration bringing into rotation;

in the configuration of the connection pipe intermediate design takes its configuration deduction;

the device contains the device controlling the angular position of the intermediate structure relative to the tower in the configuration of the deduction;

the first of the configurations of bringing into rotation or hold the ends of the wound hose section are movable in an angular direction relative to each other around an axis of rotation, and in the second configuration of bringing into rotation and hold the ends of the wound hose section remain essentially fixed in an angular direction relative to each other around an axis of rotation during rotation of the barge around the tower; and

the device has an additional intermediate structure at least partial retention of wound hose section, with additional intermediate structure installed between the tower and b is Rza between the joint configuration of bringing into rotation together with the barge around the axis of rotation relative to the tower and configuration hold barge in rotation around the axis of rotation, this intermediate structure is located outside of the tower, and additional intermediate structure is located in the tower;

the intermediate structure is located essentially above the tower and barge;

the intermediate structure is located essentially between the tower and barge outside of the tower;

intermediate design is essentially in the tower;

the intermediate structure is made with the possibility of translational movement along the axis of rotation between its configuration bringing into rotation and its configuration hold.

The invention will be more apparent from the following description, provided solely as an example, with reference to the accompanying drawings.

Figure 1 shows the first pumping device according to the invention in the configuration of the connection pipeline transportation of fluid, schematic view in section on a Central vertical plane;

figure 2 shows part of the pumping device shown in figure 1, demonstrate the link between the tower and the floating barge, magnified view;

figure 3 - same as figure 2, top view;

figure 4 is the same as in figure 2, in the configuration detach pipeline transport;

figure 5 is the same as in figure 1, with the demonstration of the second pumping device according to the invention;

figure 6 is rendered part, marked VI in figure 5;

7 shows a portion indicated by VII in figure 5, in the configuration of the connection;

on Fig shows a view similar to Fig.7, in the configuration detach;

figure 9 shows a view similar to figure 5, the third pumping device according to the invention;

figure 10 schematically shows a second pumping device in accordance with the present invention, showing the tower according to the third variant embodiment of the invention;

figure 11 shows the lower part of the tower depicted in figure 10;

on Fig shows the lower part of the tower, shown at 11, a view in section along the transverse plane.

In the following text, the terms "input" and "output" should be considered relative to the normal direction of circulation of the fluid in the pipeline.

The first device 10 pumping fluid in accordance with the present invention shown in figure 1-4.

This device 10 is, for example, for pumping a fluid medium consisting of a liquid or gaseous hydrocarbons produced in the bottom of the water and collect in the bottom device (not shown).

The fluid pumped by the installation, is transported through the column of water 12 to the surface 14, as shown in figure 1.

Water space 12 is, for example, a lake, sea or ocean. It RA is laid over the bottom and has a depth, measured between the surface 14 and the bottom part, for example, from 100 m up to 3500 m

As shown in figure 1, the device 10 contains a pumping tower 16, mounted on the bottom of the water space 12, the barge 18 mounted to rotate around the tower 16 about the vertical axis of rotation a-a', and the intermediate structure 20 mounted between the barge 18 and tower 16, which selectively provides the rotation of the barge 18 or deducted tower 16.

In addition, the device 10 includes means 22 move by rotation and translational motion of the intermediate structure 20 relative to the tower 16 and the barge 18 and several pipelines 24 transport fluid, connecting the bottom of the device with a barge 18 through the tower 16 and the intermediate structure 20. To simplify the drawing, figure 1 shows only one pipeline 24.

As shown in figures 1 and 2, the tower 16 comprises a cylindrical housing 30 and the means 32 of the mounting housing 30 to the bottom of the water space.

The housing 30 has a vertical axis a-a'. It is made between the bottom surface 34 located opposite and at a distance from the bottom of the water space 12, and the upper surface 36 located above the surface 14 of the water space 12.

The housing 30 includes an inner Central tube 40, the outer annular pipe 42 located around the inner tube 40, and the flange hapravleniya rotation of the barge 18 around the casing 30, closing the top of the outer ring pipe 42.

The tube 40 includes a peripheral wall 46, bounding inside the channel 48, which passes the pipe 24.

Along their upper edge of the peripheral wall 46 includes a guide 50 for guiding and support of the intermediate structure 20.

Guide 50 is made in the form of an annular profile, coming up through the slotted support wall 52. Guide 50 is held on the periphery around the axis a-a'.

The circulation channel 48 extends in the axial direction up opposite the intermediate structure 20 and axially down into the water space 12.

The flange 44 overlaps the top of the outer ring pipe 42. Inside it lies near the axis of rotation a-a' below the guide 50. The flange 44 forms an outer edge 54, which acts in the radial direction at a distance from the axis of rotation a-a' beyond the outer ring pipe 42 and perceives the main effort.

The outer annular tube 42 contains essentially cylindrical outer peripheral surface 53 to the direction of rotation of the barge 18 around the tower 16.

Means 32 attachment is made separately from each pipeline or pipeline 24 of transportation.

They contain flexible cables 56, a top end attached to the tower 16 and the lower end secured in the bottom of the water is about space, while possessing a certain vertical flexibility. In addition, the cables 56 hold the tower 16 is essentially stationary during the rotation around the axis a-a'.

Barge 18 includes a floating body 60, a support 62 for temporary accommodation in a detached state of the intermediate structure 20 and means 64 of the direction of rotation of the barge 18 around the axis of rotation a-a'.

The housing 60 has a height, measured between the bottom surface 66 and the upper surface 68, is essentially equal to the height of the tower 16. The housing 60 forms a shaft 70 with the axis a-a' for the placement of the tower 16.

In the example shown in the figures, the shaft 70 is located essentially in the center of the barge 18. In a variant it may be at the end of the barge 18. It is end-to-end and open at the top and bottom.

The shaft 70 has an essentially cylindrical cross-section with a diameter slightly larger than the outer diameter of the outer ring pipe 42, a limited outer surface 53, to provide tools installation 64 direction of rotation. The shaft 70 is a tower 16.

Bearing 62 accommodation includes an annular cover 80 and the outer wall 82 in the form of a truncated cone for at least partial retention of the pipeline 24 of transportation.

Cover 80 is positioned on the top surface 68 around the shaft 70. It contains a horizontal annular wall 84, protruding inward in the direction OS the a-a' opposite the shaft 70 on the flange 44.

Close to the inner annular edge 86 on the upper wall 84 is fitted with a ring 87 support for the lifting of the intermediate structure 20, as discussed below.

Inside the inner annular edge 86 of the upper wall 84 limits the hole 88 for the passage of the intermediate structure 20, the guide tracks 52.

The outer wall 82 in the form of a truncated cone protrudes upward from the upper wall 84. In the axial plane passing through the axis a-a', it forms an angle greater than 10°. It passes along the periphery of the upper wall 84 about the axis a-a'.

Means 64 of the rotation direction of contain bearings 92A, IS fixedly connected to the housing 60. Bearings 92A, IS installed in the annular space formed between the circular pipe 42 and the housing 18 in the shaft 70, respectively, near the bottom edge 66 and the upper edge 68.

In addition, the means 64 of the rotation direction of contain a thrust bearing 92D mounted between the upper surface 68 and an outer edge 54 of the flange 44 of the lid 80.

Thus, the floating barge 18 is installed to rotate around the tower 16 around the axis of rotation a-a'.

Therefore, the floating barge 18 can independently turn freely in the angular direction around the axis of rotation a-a' depending on current it trends and the TRS and take the most stable position. In a variant it can be controlled to rotate in an angular direction at a given angle around the axis a-a'.

In the example shown in figure 1-4, the intermediate structure 20 can be positioned above the tower 16 and the floating barge 18 outside of the shaft 70.

The intermediate structure 20 covers the shaft 70 at the top. It contains the Central rotary drum 100 with the axis a-a' and the inner support wall 102 in the form of a truncated cone protruding radially downward from the rotating drum 100.

The drum 100 has a diameter defined by a radius of curvature that is valid for intermediate hose pump. He has a cylindrical wall 104 that contains circular reference outsole 106 resting on the horizontal support wall 52 in the hole 88.

Cylindrical wall 104 protrudes upward above the upper surface 36 and above the lid 84. It limits the inner channel 108 that extends down into the inner channel 48 of the tube 40.

On the ring the sole 106 has at least one roller 107 rolling in the guide 50, fold-down split through the support wall 52 between the retracted position at a distance from the bottom of the guide 50 and an unfolded position of the roller in contact with the bottom of the guide 50.

The inner wall 102 in the form of a truncated cone passes radially away from the axis a-a' in the inner continuation of the outer stinky in the form of a truncated cone to the free annular edge 110, located opposite the outer annular edge 90 of the outer wall 82 in the form of a truncated cone. It passes along the periphery of the cylindrical wall 104 around the axis a-a'.

In addition, the outer annular edge 110 passes above and opposite the support ring 87.

In the axial plane passing through the axis a-a', the angle formed by the inner wall 102 in the form of a truncated cone and the horizontal plane is essentially equal to the angle formed by an outer wall 82 in the form of a truncated cone and the horizontal plane.

In addition, the cylindrical wall 104 limits the radial hole 112 for the passage of the pipeline, which extends out over the wall 102 in the form of a truncated cone.

As will be described in more detail below, the intermediate structure 20 is made with the possibility of translational movement along the axis a-a' between the bottom configuration of the retention tower 16 in which it is still connected in the rotation with the turret 16 and in which the pusher 18 can rotate around the node formed by the tower 16 and the intermediate structure 20; and the upper configuration of bringing the rotation of the barge 18, in which the intermediate structure 20 is driven into rotation together with the barge 18 around the axis of rotation a-a' in relation to the tower 16.

In addition, in the configuration of the retention of the relative angular position intermediate to the reconstruction 20 relative to the tower 16 can be adjusted by means of 22 move, what will be described below.

Means 22 contain moving device 120 move translational movement along the axis a-a' of the intermediate structure 20 relative to the tower-16 and relative to the barge 18 and the device 122 regulation of the angular position of the intermediate structure 20 relative to the tower 16, when the intermediate design takes its configuration hold.

The device 120 move translational motion contains several jacks 124, mounted on the cover 80 near the outer edge 86 under vnutrennyaya 102 in the form of a truncated cone.

The jacks 124 are made with the capability of raising the inner wall 102 in the form of a truncated cone and, therefore, the intermediate structure 20 to move designs between 20 configuration retention and configuration of bringing into rotation.

The device 122 move the rotation has an internal gear wheel 126 fixedly connected to the cylindrical wall 104 in the channel 108, rotating the gear 128, made with the possibility of engagement with the wheel 126 in the configuration of the hold, and the motor 130 rotating drive gear 128 mounted on the bracket 132 fixedly connected with the inner tube 40 in the channel 48.

In the configuration of the retaining support ring outsole 106 rests on the upper support wall 52 on the guide 50.

When this inner wall 102 in the form of a truncated cone mounted for movement with the slide on the ring 87. The gear 128 is disconnected from the wheels 126. Thus the angular position of the turret 16 relative to the intermediate structure 20 is retained abutment contact surfaces soles 106 and the wall 52.

In addition, in the configuration of the hold after engagement of the gear 128 with wheel 126 management engine 130 adjusts the angular position around the axis a-a' of the intermediate structure 20 relative to the tower 16.

In the configuration of bringing in a rotation of the jacks 124 are pulled up to lift the intermediate structure 20 and its removal from the tower 16.

While supporting ring outsole 106 is located above and at a distance from the base wall 52, and a gear wheel 126 is located above and at a distance from the gear 128.

In this configuration, bring the rotation of the intermediate structure 20 is based through the jacks 124 on the barge 18 and rotates with the barge 18 around the tower 16.

The pipeline 24 transportation contains the lower portion 140, laid on the tower 16, the intermediate section 142, is laid at least partially on the intermediate structure 20, and the upper portion 144, laid on the barge 18.

In addition, the pipe 24 contains the device 146 quick disconnect installed in this example, between the intermediate section 142 and the lower section 140.

The lower portion 140 at least partially you olne of flexible hose. In the framework of the present invention under the "flexible hose" shall mean the pipeline, as defined for example in the regulations API 17J American petroleum Institute. Such a hose can be wound on laying the drum without significant plastic deformation.

The lower portion 140 runs essentially vertically between the lower end at the bottom of the water space, and an upper end located in the inner channel 48 and connected to the device 146 quick disconnect.

The intermediate section 142 includes a curved rigid tube 148 fixedly mounted in the cylindrical wall 104 in the channel 108, and section 150 of the hose is wound around the axis a-a' and relying on the inner wall 102 in the form of a truncated cone and the outer wall 82 in the form of a truncated cone.

As shown in figure 3, section 150 of the hose includes an inner end 152, mounted on a rigid inlet 148 in the channel 108, and the outer end 154 is attached to the top section 144 opposite the barge 18.

Thus, the inner end 152 still connected in the rotation with the intermediate structure 20, while the outer end 154 still connected in the rotation with the barge 18.

As shown in figure 3, between its inner end 152 and its outer end 154 section 150 of the hose forms at least one loop around the axis a-a', the length to the th changes depending on the relative angular position of the lower end 152 relative to the outer end 154 during rotation of the barge 18 around the tower 16, when the intermediate structure 20 takes its configuration hold.

In the example shown in figure 3, and in the corresponding angular position section 150 of the hose forms three loops around the axis a-a'.

Thus, section 150 of the hose can adapt to changes in the angular position of the barge 18 relative to the tower 16 in the angular interval, preferably greater than or equal to 360°, without requiring the use of a rotating connection and without risk of damage to the pipeline 24.

The upper portion 144 is located on the barge 18 in the space above the upper surface 68. In this example, it is formed of a rigid pipeline.

In this example, the device 146 quick disconnect is in the channel 48 near the intermediate structure 20.

The device 146 includes an upper shut-off valve 160 is fixedly connected with the input free end of the intermediate section 142, the lower shut-off valve 162 fixedly connected with weekends free end of the lower section 140, and a quick connector 164, which in an emergency can quickly disconnect This connector is known in English under the title "Quick Connect and Disconnect Connector, or under reduced QCDC".

Thus, the pipeline 24 transportation may take the connection configuration in which the intermediate section 142 is connected with the lower section 140 when p is power device 146 quick disconnect; and configuration of the device is disconnected 146 quick disconnect, in which the lower portion 140 and the intermediate section 142 disconnected.

What follows is a description of the first method of disconnection in accordance with the present invention, the device 10 pumping.

Initially, as shown in Fig.1-3, the device 10 of the pump is connected with the bottom of the device for collecting the hydrocarbons produced in the bottom of the water space.

For this tower 16 is fixed in the bottom of the water space 12 through the mounting cables 56. As mentioned above, the tower 16 is essentially stationary during the rotation around the axis a-a' relative to the bottom of the water space 12.

Barge 18 is installed to rotate around the tower 16 and at least partially can freely move in an angular direction around the axis a-a' relative to the tower 16 depending on currents and winds acting on the barge 18. This rotation goes bearings 92A-92D.

The intermediate structure 20 takes its configuration hold on the tower 16. For this purpose, as mentioned above, the cylindrical wall 104 of the rotating drum 100 is based on the guide 50 provided along the top edge of the tower 16.

The intermediate structure 20 is held stationary in rotation relative to the tower 16 by friction on the rail 50. If e is ω roller 107 occupies its retracted position.

The support ring 87 on the barge 18 is moved by sliding the inner wall 102 in the form of a truncated cone during rotation of the barge 18 around the tower 16 and the intermediate structure 20. Barge 18 can rotate freely around the tower 16, not resulting in rotation of the intermediate structure 20 about the axis of rotation a-a'.

When this pipeline 24 transportation is your connection configuration.

Thus, the device 146 quick disconnect is connected, and the lower portion 140 is connected with the intermediate section 142 through the shutoff valves 160, 162 and quick connector 164.

This ensures the continuous passage of the fluid from the bottom of the water space 12 to the surface sequentially through the lower portion 140, the intermediate section 142 and the upper portion 144.

During rotation of the barge 18 around the tower 16 and the outer end 154 is wound section 150 hose, fixed in rotation relative to the barge 18 is moved in an angular direction around the axis a-a' relative to the inner end of the flexible section 150, fixed in rotation relative to the tower 16.

Section 150 respectively hose is wound or unwound, relying on the support wall 102, 82 in the form of a truncated cone. This allows to adapt the change of angular position of the barge 18 relative to the tower 16 and simultaneously provide the tested transport of fluid through a pipeline 24 of transportation.

If you want to detach, for example, when weather conditions deteriorate, shut-off valves 160, 162 are closed. Quick connector 164 disconnect to release the bottom portion 140 relative to the intermediate section 142.

Jack 124 of device 120 move translational motion activate for lifting the intermediate structure 20 relative to the tower 16 along the axis a-a' and its translation from its configuration retention in the configuration of bringing into rotation.

Ring outsole 106 rises and moves away from the base wall 52.

The intermediate structure 20 is driven into rotation around the axis a-a' floating barge 18. She can move freely rotate around the axis a-a' relative to the tower 16.

In this configuration, the inner end 152 of section 150 of the hose is moved together with the outer end 154 of this section 150 of the hose so that the rotation of the barge 18 around the axis a-a' does not affect the winding section 150 of the hose around the axis a-a'. Thus, the inner end 152 remains stationary in the angular direction relative to the outer end 154.

Thus, the pusher 18 can make turns in very large angular intervals around the tower 16, in particular greater than one revolution, and even in excess of a few turns, depending on atmospheric conditions and the current.

Tower 16 is stetsa essentially fixed with respect to the bottom of the water space 12 and is held by means of 32 attachment.

When atmospheric conditions again become normal, it is very easy again to connect the installation.

For this purpose, the rollers 107 throw back in their position, rolling to absorb the weight of the structure 20, and then the Jack 124 of device 120 move to move to move the intermediate structure 20 of the configuration of bringing into rotation in the configuration of the hold.

When this gear 128 engages with the wheel 126, and support outsole 106 again comes in the position of relying on the support wall 52.

Then turn the motor 132 to combine in the angular direction of the free end of the intermediate section 142, equipped with a valve 160, with the free end of the lower section 144, equipped with a valve 162, and again connect the connector 164. Thus the rollers 107 is removed and establishes connection.

Thus, the method in accordance with the present invention provides a fast and reliable disconnection of the device 10 of the pump in the event of extreme conditions and at the same time normal operation during a free or a controlled rotation of the barge 18 relative to the tower 16 around the axis a-a', when the pipe 24 connected transportation to move the fluid between the bottom and the surface.

Furthermore, the method provides a simple reconnect each pipeline 24 transport the programme, when conditions allow us to resume production of fluid.

Figure 5-8 shows the second device 210 pumping in accordance with the present invention.

In contrast to the first device 10 of the pump shown in figures 1 to 4, the intermediate structure 20 is essentially entirely located in the annular space between the tower 16 and the housing 60, the shaft 70.

Thus, the intermediate structure 20 includes a hollow outer cylindrical tube 220 and a lot of the outer wall 222 in the form of a truncated cone retention of each intermediate section 142 of the pipeline 24.

Outer tube 220 includes a hollow cylindrical lower portion 224 with the axis a-a' and the base outer flange 226 protruding radially outwards from the upper edge of the cylindrical lower portion 224.

The lower portion 224 limits the annular interior space 228 for the passage of the intermediate section 144 of each of the pipeline 24.

The outer wall 222 in the form of a truncated cone located one above the other along the axis a-a'.

Each wall 222 in the form of a truncated cone protrudes inward towards the axis a-a' from the bottom 224. In the projection on the axial plane passing through the axis a-a', each wall 222 forms an angle greater than 10°.

Each wall 222 in the form of a truncated cone is designed to accommodate therein a part of the wound section 150 was going ha.

Tower 16 includes an inner cylindrical tube 40 passing in front of the case 30. On the inner pipe 40 made many internal walls 230 in the form of a truncated cone in front of each outer wall 222 in the form of a truncated cone.

Tower 16 also includes a support flange 44 located above the pipe 40 and protruding in a radial direction relative to the tube 40. The mounting flange 44 is mounted for rotation relative to the barge 18 on the supports 231 fixedly connected to the barge and located around the shaft 70, while between the supports 231 and the flange 44 is installed bearings.

In addition, under the circular pipe 220 tower 16 limits the bearing surface 232 device 120 move the movement forward. Thus, in contrast to the first device 10, the device 120 move translational motion installed on the tower 16.

The housing 60 of the barge 18 limits the abutment shoulder 240 of the flange 226 which opens in the direction of axis a-a'. Shoulder 240 is located in the upper part of the shaft 70.

As shown in Fig.6, each lower section 140 of the pipeline 24 transportation passes to the axial position along the axis a-a'found in the channel 48 opposite the outer wall 230 in the form of a truncated cone.

The inner end 152 of each intermediate section 142 still connected with the lower section 40 through the inner tube 40 of the tower without the use of a quick disconnect device.

As mentioned above, each intermediate section 142 includes wound section 150 of the hose, which takes place in the annular space formed by the shaft 70 between the inner tube 40 and outer tube 220, based on one against the other wall 230 in the form of a truncated cone.

The outer end 154 of section 150 of the hose is fixed on the outer tube 220. It is connected through the outer tube 220 with the upper part 250 of the intermediate section 142, which passes vertically through the annular space 228 to the flange 226.

Top 250 different partial sections 142 are distributed in the annular space 228 and are separated from each other by intervals in the angular direction around the axis a-a'.

In addition, unlike the device 10 of the transfer device 146 disconnecting the second device 210 pump is installed between the intermediate section 142 and the top section 144.

For this purpose, as shown in Fig.7, on input the free end of the upper section 144 above the flange 226 and the shoulder 240 has an upper shut-off valve 160, and output the free end of the top 250 in the annular space 228 is set lower shut-off valve 162.

Above the flange 226 between the valves 160, 162 mounted connector 164.

Unlike device 10, shown in figures 1 to 4, the intermediate structure 20 of the device 210 is my config is the radio bringing into rotation during extraction of the fluid, when the pipe 24 is connected.

Thus, the flange 226 of the outer tube 220 rests under its own weight bearing 252 is performed on the shoulder 240, limited to the case.

In this configuration, the pusher 18 and the intermediate structure 20 can be moved by rotation together around the tower 16,

During this rotation of the bearings 231 fixedly connected to the barge, rotate around the axis a-a' under the flange 44 on the support bearings.

When this wound section 150 of each hose pipe 24 is wound and unwound on the respective walls 222, 230 in the form of a truncated cone between the inner end 152 that is fixed in rotation relative to the tower 16, and the outer end 154, which is still connected in the rotation with the barge 18.

In case of emergency disconnect connector 164 is disconnected, as shown in Fig, after closing shutoff valves 160, 162.

Each Jack 124 fixedly connected to the tower 16, raises the pipe 220 to move translational movement along the axis a-a'. This frees the intermediate structure 20 from the barge 18 and translates the intermediate structure 20 of the configuration of bringing into rotation configuration of the hold.

In the configuration of the restraint shown in Fig, pipe 220 and the flange 226 is fully depart from barges over 18 Opera is 252, located in the shoulder 240. Barge 18 can rotate freely under the intermediate structure 20, not bringing it in rotation.

The intermediate structure 20, on the contrary, is held stationary in rotation relative to the tower 16. Thus, the outer end 154 of the flexible section remains fixed in an angular direction relative to the inner end 152.

As the pipeline 24 is disconnected at the device level 146 disconnected, floating barge 18 can rotate freely around the tower 16 in very large angular intervals, in particular in excess of one turn, without changing the angular position of the outer end 154 is wound section 150 of the hose relative to the inner end 152 of this section and, therefore, without twisting section 150 is wound hose.

The third device 310 transportation in accordance with the present invention is shown in Fig.9. In contrast to the second device 210 is the third device 310 includes an additional intermediate structure 312 of the retaining sections 150 hose additional groups of pipes 24.

Additional structure 312 comprises a tubular body 313, located in the channel 48, is limited in the centre of the tower 16, many of the supporting bearing walls 314 in the form of a truncated cone and an auxiliary flange 316 of support on the annular bracket 318, still connected to sbarge 18.

The housing 313 is along the axis a-a' in front of the inner tube 40 of the tower 16.

Each auxiliary wall 314 protrudes from the housing 313 in the direction of the inner tube 40. Each wall 314 is located opposite the corresponding support wall 317 in the form of a truncated cone fixedly connected with the inner surface of the pipe 40.

For each pair of auxiliary walls 314, 317 is section 150 of the hose pipe 24. As mentioned above, the first end section 150 of the hose still connected to the housing 313, and the second end section 150 of the hose still connected to the pipe 40.

Ring bracket 318 is in the radial direction around and above the flange 44 and the shaft 70. He fixed outside on the upper surface of the barge 18.

Thus, additional structure 312 can move translational movement along the axis a-a' between the configuration of bringing the rotation of the barge 18, in which the flange 312 rests on the bracket 318, and the configuration of the retention tower 16, in which the flange 316 is at a distance from the barge 18.

As mentioned above, the Jack 320 mounted on the tower, is located beneath the tubular body 313 to move additional structures 312 of the configuration of bringing into rotation configuration of the hold.

Thus, in the configuration of bringing in a rotation of the ends of each section 150 is lang, located on each pair are facing each other of the support walls 314, 317, are movable in an angular direction relative to each other. In the configuration of the retention of the ends of each section 150 of the tube positioned in each pair being opposite each other of the support walls 314, 317 are fixed in angular direction relative to each other.

Preferably the tower 16 contains two independent housing 16', 16"installed so that they can detach from each other by known means 600 connections.

Figure 10 schematically shows such a tower, used with the pumping system according to the second variant embodiment of the invention. Indeed, figure 10 shows the device 710 pumping containing tower 16, fixed to the seabed, and the barge 18 mounted to rotate around the tower 16. Figure 10 also shows an intermediate structure 20 forms a hollow outer cylindrical pipe according to a variant implementation, shown in figure 5-9.

The way the device is disconnected pump, consisting of an upper housing 16" tower, the intermediate structure 20 and the barge 18, perform similarly to the device described with reference to figure 5-9. Therefore, in this case we will only describe the features of the tower 16.

Tower 16 includes floating the lower body 16'. In addition,the lower housing can be detached from the upper housing 16", as will be described below.

The lower body 16' tower still connect with the upper case 16" tower using known means 600 connections. On the lower body 16' of the tower system 32 mounting the barge 18. In addition, as shown in figure 10, the lower portion 140 of the pipeline conveying fluid medium contains a first part 140", passing through the upper housing 16 ' tower in the direction a-a', which figure 10 is a vertical, and the second part 140', passing through the lower body 16' tower in the direction a-a'. Both parts 140', 140", forming the lower portion 140, is connected with the system 610 detach located between the upper housing 16 and lower housing 16'. As a rule, the lower portion 140' comes to the seabed.

The upper case 16" tower equipped with a bearing support to ensure rotation of the barges around this support, while the lower body 16' does not have its own bearings. During normal operation, the lower body 16' tower still connected with the upper case 16" tower. Thus, the tower 18 can be rotated around two blocks 16' and 16" of the tower through the bearings of the upper shell 16 of the tower.

Figure 11 shows in detail a part of the lower body 16' of the tower. The lower body 16' includes an outer wall 500 with the axis a-a', forming the first outer pipe is 500. The second hollow cylindrical tube 510 height along the axis a-a'corresponding to the height of the outer pipe 500 is located inside the first tube 500, thereby limiting the annular space 520 between the two pipes. Pipes 510, 520 are closed by the top wall and bottom wall 525, 526.

In the annular space 520 are straight tubes 540 ("I tube" in English), which has a diameter sufficient to contain the lower parts 140' lower sections 140. The ends of the straight tubes 540 are on the upper level 525 526 and lower walls, limiting each circulation channel in the axial direction a-a'. These ventilation channels should go lower portion 140' of each bottom portion 140. They are located through uniform intervals around the circumference of the annular space of the lower housing 16'. These straight tube 540 also provide strengthening of the lower body 16' of the structure.

On Fig cross section perpendicular to the axis a-a' shows a uniform distribution of straight tubes 540 annular space 520.

At intervals along the axis a-a' in the plane perpendicular to the axis a-a' are partitions 530, 531, dividing the annular space 520 of the lower body 16' to separate airtight compartments. Preferably the compartments of the lower body 16' tower equipped with valves to control and correction is evocati lower housing 16'.

Preferably the Central annular space 740 can be used for piping 520 and underwater pumps order of discharge on the surface of the barge 18 cold water for cooling equipment located on the barge 18. These pipelines 560 can be made of polymeric material and are held inside the Central shaft 740 tower along the axis a-a' between the surface of the barge and the depth of several tens of meters.

Next is a description of how detach the lower body 16', which are the lower portion 140' of the lower sections 140. This step is carried out after the step of detaching the intermediate segment 142 and the bottom portion 140, which provides free rotation of the barge 18 around the tower 16 and was described above.

Detach the lower body 16' is as follows. First, isolate and divide the first part 140' and the second part 140 of the lower section 40, closing the valve system 610 detach. Then the lower body 16' of the tower is cut off from the upper housing 16 ' tower. Residual buoyancy remaining on the bottom of the housing 16' can be omitted. If necessary, the lower body 16' tower slightly Ballesteros to start lowering the lower body 16'.

Then the lower body 16' tower stabilize at a depth far below the barge 18. For this DOS is enough to adjust the buoyancy of the lower body 16', that he has achieved and maintained its position of equilibrium. Surface installation 18 can be driven from the place of production.

Preferably the surface installation with the upper case 16" tower away when the weather conditions become extreme, or when the desired surface at a different location.

Thus, detached from the upper housing 16 of the tower, the lower body 16' of the tower preferably forms a temporary underwater installation to hold the lower portions 140' upstream pipelines and means 32 for the mounting of the barge 18. Then they can pick up, as will be described below.

According to another preferred variant of the use of the lower body 16' tower, on the lower body 16' of the tower are of the lower portion 140' and means for securing the barge 18 at a water depth of several tens of meters, sufficient to avoid any collision with the surface installation. After this surface installation or barge 18 is situated above the lower housing 16'. Thus the buoyancy of the lower body 16' is increased to raise the upper housing 16' on the surface. Guides cables allow you to direct the lower body 16' in its nest, made in the mine surface installations 18 below the upper case 16" tower. Then part 140' and 140" bottom plot combine, turning the barge 18 around the tower, while the upper body is 16" from eribaum stationary in rotation relative to the barge 18. The lower body 16' still connect with the upper housing 16".

Shown in figure 10, the tower was described for the second variant of implementation of the pumping device in accordance with the present invention. However, it can be used in the first embodiment, the pumping device.

In the embodiment shown in figure 5-8, the intermediate structure 20 raise with jacks for physical disconnection of the intermediate structure 20 from the barge 18 so that the intermediate structure 220 was still connected to the tower 16.

In the preferred embodiment, which avoids raising the intermediate structure 20, the device 124 vertical movement (formed jacks) replace rotating bearings (rolling or sliding) on the surfaces 232 and 226 and a corresponding device for locking rotation of the intermediate structure 20 relative to the tower 16, which still allows to connect the intermediate structure 20 with a tower 16 in the disengaged position without vertical movement of the intermediate structure 20 relative to the tower 16 or relative to the barge 18.

To avoid damage to the pipes after they have been detached, the upper ends hold strained, for example, by their joint fastening on the top wheel.

1. The method of detaching device (10; 210; 310) pumping the fluid between the bottom of the water space (12) and the surface (14), the device (10; 210; 310) pump contains: at least one conduit (24) conveying a fluid medium containing the lower portion (140), intermediate section (142), the upper portion (144) and the means (164) quick disconnect installed between the intermediate section (142) and bottom section (140) or between the intermediate section (142) and the top section (144); the tower (16), which is the lower portion (140), the tower (16) includes means (32) for mounting on the bottom of the water space (12); a floating barge (18)mounted to rotate on the tower (16) around the axis (a-a') of rotation, and on the barge (18) is the upper portion (144), the intermediate area (142) contains at least one section (150) of the hose is wound around an axis (A-A') of rotation, the method includes a step junction on which the intermediate section (142) connect or with the lower section (140), or with the top section (144) using (164) quick disconnect, and the stage detach containing detach means (164) quick disconnect, characterized in that the device (10; 210; 310) pump contains at least one intermediate structure (20) at least partial retention of wound s is AI (150) hose, this intermediate structure (20) is installed between the tower (16) and barge (18) between the joint configuration of bringing into rotation together with the barge (18) around an axis of rotation relative to the tower (16) and the configuration of the retention in the rotation of the tower (16) around the axis (a-a') of rotation, and during connection of the intermediate structure (20) is installed in one of the configurations of bringing into rotation or retention, and the step of detaching includes the transition of the intermediate structure (20) in another configuration of bringing into rotation or retention.

2. The method according to claim 1, characterized in that the intermediate structure (20) includes a support wall (102; 222) to hold the wound section (150) hose, made around the axis of rotation, at this stage of the connection contains the coiling and/or uncoiling of the wound section (150) of the hose on the supporting wall (102; 222) around the axis (a-a') of rotation during rotation of the barge (18) relative to the tower (16).

3. The method according to claim 1, characterized in that the step of detaching includes moving the intermediate structure (20) translational motion along the axis (a-a') of rotation for the transition of the intermediate structure (20) from one of its configurations bring in rotation or hold another of its configurations bring in rotation or retention.

4. The method according to any one of claims 1 to 3, distinguished by the different topics during the stage of connection of the intermediate structure (20) takes its configuration hold.

5. The method according to any one of claims 1 to 3, characterized in that during connection of the intermediate structure (20) takes its configuration bringing into rotation.

6. The method according to any one of claims 1 to 3, characterized in that after the step of detaching the barge (18) can rotate freely around the tower (16)at the ends (152, 154) is wound section (150) of the hose remains essentially fixed in the angular direction relative to each other around an axis (a-a') of rotation.

7. The method according to claim 4, characterized in that after the step of detaching the barge (18) can rotate freely around the tower (16)at the ends (152, 154) is wound section (150) of the hose remains essentially fixed in the angular direction relative to each other around an axis (a-a') of rotation.

8. The method according to claim 5, characterized in that after the step of detaching the barge (18) can rotate freely around the tower (16)at the ends (152, 154) is wound section (150) of the hose remains essentially fixed in the angular direction relative to each other around an axis (a-a') of rotation.

9. The device (10; 210; 310) pumping the fluid between the bottom of the water space (12) and the surface, comprising: at least one conduit (24) conveying a fluid medium containing neither the deposits area (140), intermediate section (142), the upper portion (144) and the means (164) quick disconnect installed between the intermediate section (142) and bottom section (140) or between the intermediate section (142) and the top section (144); the tower (16), which paved the lower portion (140), the tower (16) includes means (32) for mounting in the bottom of the water space (12); a floating barge (18)mounted to rotate on the tower (16) around the axis (A-A') of rotation, while on the barge (18) is the upper portion (144), and an intermediate section (142) contains at least one section (150) of the hose is wound around an axis (a-a') of rotation, and the pipe (24) transportation performed with the opportunity to take a connection configuration in which the intermediate section (142) is connected or with the lower section (140), or with the top section (144) using (164) quick disconnect, and the configuration of the disconnecting means (164) quick disconnect, characterized in that the device (10; 210; 310) contains an intermediate structure (20) at least partial retention of wound section (150) of the hose, an intermediate structure (20) is installed between the tower (16) and barge (18) between the joint configuration of bringing into rotation together with the barge (18) around an axis of rotation relative to the tower (16) and the configuration of the retention tower (16) in the rotation in the Rog axis (a-a') of rotation.

10. The device (10; 210; 310) according to claim 9, characterized in that the intermediate structure (20) includes a support wall (102; 222) hold wound section (150) hose, made around an axis (a-a') of rotation, while the wound section (150) of the hose is at least partially located on the supporting wall (102; 222).

11. Device (210; 310) of claim 10, characterized in that it contains several pipelines (24) transporting the fluid, the intermediate structure (20) includes a support wall (222) to hold the wound section (150) of hose for each pipeline (24) transportation, while supporting wall (222) are arranged one above the other along the axis (a-a') of rotation.

12. Device (210; 310) according to any one of p-11, characterized in that the connection configuration of the pipeline intermediate design (20) takes its configuration bringing into rotation.

13. The device (10) according to any one of p-11, characterized in that the connection configuration of the pipeline intermediate design (20) takes its configuration hold.

14. The device (10) according to item 13, characterized in that it contains a device (122) regulation of the angular position of the intermediate structure (20) relative to the tower (16) in the configuration of the hold.

15. The device (10; 210; 310) according to any one of p-11, 14, characterized in that the first configuration is cast in the rotation who do hold the ends (152, 154) wound section (150) of the hose are movable in an angular direction relative to each other around an axis (a-a') of rotation during rotation of the barge (18) around the tower (16), and in the second configuration of bringing into rotation or hold the ends (152, 154) is wound section (150) of the hose remains essentially fixed in the angular direction relative to each other around an axis (a-a') of rotation during rotation of the barge (18) around the tower (16).

16. Device (310) according to any one of p-11, 14, characterized in that it contains additional intermediate design (312) for at least partial retention of wound section (150) hose additional pipeline transportation, with additional intermediate design (312) installed between the tower (16) and barge (18) between the joint configuration of bringing into rotation together with the barge (18) around an axis of rotation and the configuration of the retention tower (16) in rotation around the axis (a-a') of rotation, the intermediate structure (20) located outside of the tower (16), and additional intermediate design (312) is located in the tower (16).

17. Device according to any one of p-11, 14, characterized in that the tower (16) contains the upper housing (16) and lower housing (16'), with the upper housing (16) and lower housing (16') are mounted on each other with the possibility of disconnection, the lower the participants is to (140) contains the first part (140') and the second part (140"), United tool (610) detach.

18. The device according to 17, characterized in that the lower housing (16') of the tower contains means (32) securing the barge (18).



 

Same patents:

FIELD: mining.

SUBSTANCE: according to the invention, inside the housing of a drilling ship mooring turret, which has a cylindrical housing with a drilling shaft and an anchor retention system of the ship, in its lower part there installed is an annular cylindrical structure with ballast compartments, which can move vertically along guides below the main plane of the drilling ship. Inside the shaft there arranged are deflectors located along the perimeter of the shaft on its walls above the ship waterline.

EFFECT: invention of a drilling ship mooring turret structure allows protecting a riser pipe at drilling operations under ice conditions and protecting against flooding of an upper deck of the drilling ship through the drilling shaft at stormy drift or at transition of the drilling ship under conditions of considerable disturbance, especially at negative air temperature contributing to formation of ice on deck structures of the drilling ship.

2 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: underwater rig comprises two submarines, one making deep-water drilling complex. Said complex consists of two modules, one making process module for executing the entire cycle of well construction and another one making the drilling module. Second submarine represents a nuclear underwater power production complex. Process module comprises drilling module supercharging system, storage battery compartment connected with cable joint. Process module top section is equipped with float emergency chamber with docking assemblies and self-propelled submarine while bottom section is provided with lock chamber with lifter. Drilling module is arranged vertically relative to process module and connected therewith by pipeline and power cables. Drill rig with hydraulic drive is arranged at drilling module centre. Bottom thrust plate, set of preventers, drill tool are arranged in drilling g module axial plane while pipe feed and making-up automatic device is arranged on opposite side.

EFFECT: higher efficiency.

4 dwg

FIELD: oil and gas industry.

SUBSTANCE: platform contains supporting base of submerged type. Note that platform power unit-module is made in the form of automated nuclear electric station designed for power supply, and unit-modules are made with compressor and pump equipment, with automated control system, with diving and submerged-technical equipment that serve for primary preparation of well product for transportation to the main process platform and/or to offshore off-loading terminal for well product storage. Note that the whole platform assy is made in the form of circle and/or polygon, in the centre of which there is a wellhead module with wellheads equally spaced between themselves.

EFFECT: increase of reliability of submerged production platforms construction and operation with simultaneous provision of wells location inside the object.

8 cl, 3 dwg

FIELD: transport.

SUBSTANCE: invention relates to oil production in arctic waters, particularly, to ship for use therein. Proposed ship is available in two versions. In compliance with first version, ship can drill via drill water separation string extending from sea bottom well to turret arranged aboard the ship. Said drill water separation string can be detached from the ship located under its main line. At turret separation from the ship its bottom part submerges along water separation column to occupy equilibrium position whereat its surrounds at least partially a part of drill water separation column. In compliance with second version, proposed ship for drilling oil and/or gas production wells can be connected with at least one water separation column connected with turret coupled with ship of drill water separation column extending through the turret connected with the ship. Two lengthwise boards extend between ship fore and aft with ice belt made at, at least 50% of their length, the angle a of 45-80 degrees between ship hull and horizontal line.

EFFECT: lower load at anchoring and maneuvering devices, improved conditions of operation in arctic waters.

5 cl, 18 dwg

FIELD: oil and gas industry.

SUBSTANCE: from water surface up to near-bottom methane hydrate deposit tube with diameter from 0.01 m up to 1 m is taken down with methane collector at upper butt end. In near-bottom deposit at lower butt ends of this tube pulp is made containing suspension of solid particles of methane hydrate in ambient water with size from 10-6 m up to 0.01 m and weight content of methane from 0.01% up to 10%. At the beginning forces flow of pulp is created at lower butt end of the tube in order to initiate a self-maintained process. In methane collector liquid water and gaseous methane are divided. Then water is drained and methane is collected.

EFFECT: improving effectiveness of the method due to decrease of power supply from outside.

7 cl

FIELD: transport.

SUBSTANCE: breakaway ship mooring device comprises mooring buoy 11 and swivel arranged there above. Mooring buoy comprises central element 2 for anchoring to sea bed including several channels to house vertical pipelines 4. Mooring buoy external element 5 surrounds is central element to turn thereabout. Said external element can be located and secured in the ship appropriate recess. Aforesaid swivel is located above mooring buoy to provided for space there between to allow load lifting means to pass there through in buoy up/down displacement during connection/ disconnection. Besides that is a manifold arranged between buoy and swivel.

EFFECT: improved operation, simplified design.

7 cl, 2 dwg

FIELD: transport.

SUBSTANCE: invention relates to platforms for underwater oil extraction in zones of extreme sea and weather conditions. Platform 10 comprises a detachable anchoring system 1, 2, 3 to anchor lines 13 at sea bed and connection pipes 14 thereat. Anchoring system comprises mooring buoy 1 for anchor lines and pipelines of connection with sea bed. Note here that said buoy is a circular element. Turntable 2 extends inside cavity 4 crossing the floating platform hull over its entire height. Said mooring buoy is secured at turntable 2 under platform hull. Turntable 2 comprises tight external structure 2b with bottom 2c tightly connected with lower end of external structure 2b. Tubular external structure 2b incorporates internal structure 2a jointed with deck level with its top end 2a1. Internal structure and tubular external structure interact, on one side, with one lower rolling bearing or slider bearing to allow rotation of internal structure without that of external structure when the platform is driven around cavity vertical axis ZZ' and tight tubular outer structure. Lower rolling or slider bearing 51, 52 is located above water surface inside tight external structure.

EFFECT: simplified and reliable design, improved servicing conditions of rolling bearings.

10 cl, 8 dwg

FIELD: transport.

SUBSTANCE: invention relates to floating oil production platform. Platform 10 comprises a detachable anchoring system 1, 2, 3 to anchor lines 13 at sea bed and connection pipes 14 thereat. Besides it comprises mooring 1 buoy for connection of anchor lines and first pipelines 14 of connection with sea bed and turntable 2 arranged inside space 4 crossing the platform hull over its entire height. Said mooring buoy is secured at turntable 2 under platform hull. Platform includes the system for connection/disconnection of said mooring buoy to/from turntable bottom wall 2c that comprises multiple lifting cables 20b and pumps 22 to deliver water in mooring buoy valve chamber 30.

EFFECT: oil production in extreme sea and weather conditions.

15 cl, 9 dwg

FIELD: oil and gas industry.

SUBSTANCE: well is drilled on a sea bottom to an oil-bearing horizon, closed with a shell, and hydrocarbons are transported along the pipe to the surface. According to the invention, a process of forced controlled formation of gas hydrates is established. For this purpose oil containing gas is mixed with the necessary water amount from the surface in a cone, comprising facilities of mechanical mixing in the form of an impeller rotated by water that arrives via nozzles fixed at the impeller's level in the cone wall, until formation of gas hydrates. A mixture of products of gas hydrates destruction in the form of a gas-hydrate sludge - sand, water and oil - is transported to the surface. The casing pipe on the well head comprises a plug damaged by a signal. The shell is made in the form of a cone, the top of which is connected with a pipeline, and edges - with a ballast ring. Inside the cone on its axial line there is an impeller fixed, at the level of which along the ring in the cone wall there are controlled nozzles fixed, which have an angle to the cone tangent, providing for maximum speed of impeller rotation as water arrives from the surface.

EFFECT: reduced probability of clogging of a transport pipeline and delivery of hydrocarbons of any type, gas or liquid, with the help of one process complex from the bottom to the surface.

2 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: steel reservoir, which is open at the bottom, is used, with thickness of its walls equal to 7-10 mm, and having piping with escort vessels. At the same time outer pressure P1 of hydrostatic water column is measured, as well as inner pressure P2 of oil and gas medium inside the reservoir, and pressure difference ΔP between them is calculated, which shall be excessive and shall not exceed 4000 Pa, from the following ratio: ΔP=P1-P2≤4000 Pa. At the same time flexible pipelines are used for piping, and controlled throughput capacity is calculated on the basis of the following ratio: Fw<(Fg+Fo+-Fc)<<Fr, where Fw - throughput section of the emergency gusher well; Fg, Fo, Fc - throughput section of flexible pipelines of gas, oil and operative control, accordingly; Fr - throughput section of the reservoir.

EFFECT: possibility to use a light and simple to make structure, necessary to realise the method, possibility for efficient control of a reservoir when it is lowered or lifted.

3 cl, 1 dwg

FIELD: mining.

SUBSTANCE: draw work comprises a facility for winding of a rope, which is placed in the centre of a shaft, one or several supports, many motors and the main frame. The shaft has one first end and one second end and rotates in one first direction and in one second direction, opposite to the first direction. The facility of rope winding has at least partially mainly the cylindrical shape. Supports serve to support the main shaft in process of rotation. Multiple engines provide for rotation of the shaft and the facility for winding of the rope in the first direction and in the second direction. Supports and engines are fixed to the main frame. Engines are installed at both sides of the facility for winding of the rope and are connected to them without elements of speed rotation, with direct transfer of torque rotation to the shaft.

EFFECT: increased efficiency and reliability of operation of drilling rigs.

8 dwg

FIELD: oil and gas industry.

SUBSTANCE: unit with closed coiled pipe includes movable trailer; coiled pipe assembly connected to movable trailer with possibility of being detached and containing drum of coiled pipe, which is connected to injector of coiled pipe; at that, drum and injector are fixed relative to each other and move together relative to movable trailer as whole entity; and casing enclosing the coiled pipe assembly in order to maintain temperature. Method of well shaft introduction to underground formation involves movement of coiled pipe assembly inside casing to the first position, and then introduction of equipment of drilling column bottom (BHA) to well shaft using lifting system, when coiled pipe assembly is in the first position; at that, coiled pipe assembly and at least one section of lifting are enclosed inside the casing. Besides, coiled pipe assembly includes coiled pipe, drum of coiled pipe and injector of coiled pipe; besides, drum of coiled pipe and injector of coiled pipe are fixed relative to each other and move together as whole entity; movement of coiled pipe assembly inside casing to the second position and then connection of coiled pipe to BHA and introduction of BHA to well shaft when assembly of coiled pipe is in the second position.

EFFECT: drilling efficiency, protection of inner space of drilling unit against external factors.

17 cl, 7 dwg

FIELD: mining.

SUBSTANCE: device for performing operations in underground well, which contains system of flexible pipes, the first support, flexible pipe introduction device and drum of flexible pipes, the second support separated from the first support, drill tower installed on the second support, upper drive installed on drill tower, for its movement along it in longitudinal direction, elevator having the possibility of being engaged with flexible pipe introduction device and movement of the above device from the support to the position in which the above introduction device is aligned with upper drive and suspended to the drive or drill tower, and torque moment limit stop connecting the drill tower to flexible pipe introduction system in order to prevent reactive displacement of the above flexible pipe introduction device relative to the drill tower. In the well shaft the operation that includes supply of flexible pipes from drum through flexible pipe introduction device to the well shaft is performed; at that, at least some part of the weight of the above device and at least some part of the weight of flexible pipe in the well shaft belongs to drill tower.

EFFECT: quick switching between operations with flexible pipes and operations using upper drive.

33 cl, 14 dwg

FIELD: oil and gas production.

SUBSTANCE: lubricating device for injector of flexible pipes consists of elongated case and of guiding system positioned in case. The guiding system consists of rollers located near the first end of the case and directing the flexible pipe along the first trajectory and of rollers located near the second end of the case and directing the flexible pipe along the second trajectory. The drill unit includes a support, a lifting tower, an upper drive mounted on the lifting tower for lengthwise travels along it and having the first axis, the injector assembled on the lifting tower and having the second axis set off relative to the first axis and a lubricating device attached to the injector.

EFFECT: increased efficiency and reliability at operation with flexible pipes.

19 cl, 10 dwg

FIELD: oil and gas production.

SUBSTANCE: in system intended for well drilling and/or servicing by using continuous coiled pipe, turntable component rotates coiled pipe drum component. System includes balancing component relative to well bore, which allows coiled pipe rotation when it is in well bore. Coiled pipe injector can be located on individual component of turntable or on the turntable component which is the same to the one on which the drum component is located.

EFFECT: developing method and device for drilling and servicing underground wells by using rotary coiled pipe.

20 cl, 18 dwg

FIELD: machine building.

SUBSTANCE: drilling method of underground borehole, including following stages: preparation of device for drilling of well, including drum with continuous flexible pipes string, feeding device for movement of column of flexible casings during the well construction process and one or several pumps, provided for circulation of flow medium; connected to mentioned flexible pipes string of boring tool, containing at least downhole motor and boring bit; well drilling up to mentioned width; extraction of flexible pipes string from well; separation of boring tool; lowering of mentioned flexible pipes string into well bore; suspension of delivered flexible pipes string in drilled borehole to equipment of wellhead; cutting of suspended flexible casing column; and pumping of coupling medium into free-hanging flexible casing column and into annular space.

EFFECT: cost cutting for construction of deep wells for oil and gas.

27 cl, 15 dwg

FIELD: oil and gas industry.

SUBSTANCE: suggested group of inventions refers to operating and underground repair of oil and gas wells. This is achieved by the following: the system for service of wells is assembled on a common platform - transport base-trailer. Also on the trailer there are arranged a power aggregate (a single motor) supplying primary power for pump and motor operation, a pump, a motor, an operator's control panel, a drum for winding the pump-compressor pipe, an ejector, a crane for ejector round-trip, a system for fluid medium pumping into a borehole of the well and a tank with liquid nitrogen. Further, a slide assembly or barge can be used as the transport base for the suggested system.

EFFECT: formation of united mobile composite system including complex of necessary equipment for service of wells during their operation.

29 cl, 13 dwg

FIELD: mining.

SUBSTANCE: at implementation of method lifting installation is arranged for winding, transporting and performing round-trip operations with flexible continuous pipe string or with flexible continuous bar string. During transporting on the lifting installation there are assembled movably a drum with winded flexible continuous tube string or bar string, a rigidly secured racker and an advancing unit of a feeding mechanism, further, a movably installed feeding mechanism with folding hydraulic jacks and an operator's compartment. After arrival and arrangement of the lifting installation on the well the operator' compartment is turned aside, the feeding mechanism is advanced and centered over the well, then folded hydraulic jacks are lowered, the feeding mechanism is filled with the flexible continuous pipe string or bar string winded on the drum, and round-trip operations are performed with the said pipe string or bar string. During transportation the drum is turned and installed along the lengthwise axis of the lifting installation. To perform round-trip operations the drum is installed in the position along the transverse axis of the lifting installation.

EFFECT: increased efficiency of well repair due to versatility of lifting installation.

4 dwg

FIELD: oil and gas well operation or underground repair with the use of continuous steel pipes.

SUBSTANCE: mobile plant comprises transportation base having platform mounted on frame thereof. Operator's compartment, reel for flexible pipe winding, injector, guiding arch, pump drive reducer, wellhead sealing means and blowout preventing device are mounted on the platform. U-shaped pole is pivotally connected to the platform in stern part thereof. Operator's compartment and reel for flexible pipe winding are arranged between posts of U-shaped pole. Injector is installed on plate arranged in lower part of U-shaped pole. Plate is pivotally secured to pole posts by the first ends and connected to stern platform part by the second ends through tie rods. Centering mechanism provided with hook suspension is located in upper pole part. Centering mechanism is formed as two guiders and sliding member with rollers. Sliding member is connected to hydraulic cylinder. Guiding arch is fixedly secured to injector and formed as two sections pivotally connected one to another. The sections are provided with hydraulic drive, which provides mutual rotation thereof and permits bringing thereof in collapsed position during transportation.

EFFECT: extended capabilities by providing possibility to perform supplementary works in well.

2 cl, 6 dwg

FIELD: equipment for oil and gas well maintenance and underground repair with the use of pipes.

SUBSTANCE: pipe movement device comprises pipe movement mechanism, frame and supports arranged on the frame. One support is pivotally connected to pipe movement mechanism through posts so that pipe movement mechanism may rotate in longitudinal plane of device. Device also has pressure transducers. Another support is made as one or several power cylinders. Each cylinder has at least one branch pivotally connected to pipe movement mechanism through rocking arm pivotally connected to frame. Another branch of each pressure cylinder is pivotally connected to the frame. Working chambers of one or several power cylinders are connected to corresponding transducers.

EFFECT: possibility to measure pulling force of pipe movement mechanism during lifting and lowering thereof.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: device for additional sealing of coupling and conical threaded tube connections includes a heating element, for example an inductor of annular type, a thermocouple, an amplifier of thermoelectromotive force occurring in the thermocouple. Besides, it includes a relay, via the winding of which the current flows, which is determined by thermoelectromotive force of the thermocouple, an energy source for the inductor and a timer. With that, the relay disconnects the inductor electric power supply line at achievement of temperature of brazing alloy full melting in the brazing zone. The timer disconnects the second line after lapse of brazing temperature exposure time.

EFFECT: providing additional reliable sealing of coupling and conical threaded connection at brazing.

1 cl, 4 dwg

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