Ice-resistant drilling facilities for development of shallow marine continental shelf, and formation method of ice-resistant drilling facilities for development of shallow marine continental shelf

FIELD: oil and gas industry.

SUBSTANCE: group of inventions refers to designs and formation methods of ice-resistant drilling facilities for development of shallow marine continental shelf. Drilling facilities include a self-lifting floating drilling rig with a cantilever, which has a housing and supports, at least one of which is ice-resistant, as well as drilling platform facilities with an ice-resistant housing, which can be installed in a fixed manner at the sea bottom and has upper superstructure for arrangement of equipment. Housing of the drilling rig is equipped at least with two retractable slides oriented towards the drilling platform facilities and mounted so that they can be moved in horizontal plane to transfer the load from the rig housing by means of the above slides to the drilling platform facilities. In the drilling platform facilities housing there are seats corresponding to retractable slides of the self-lifting floating drilling rig. Ice-resistant support of the drilling rig is mounted so that it can be borne against the soil to transfer the load to the sea bottom. The rest supports of the rig are non-ice-resistant and mounted so that they can be lifted above the rig housing after the load transfer from the housing through the drilling platform facilities and ice-resistant support to the sea bottom.

EFFECT: improving reliability at simplifying the design of the facilities, as well as enlarging its operating capabilities by installing the facilities in shallow water.

4 cl, 10 dwg

 

The claimed group of inventions relates to hydraulic structures, and more particularly to structures and methods of forming the ice-resistant drilling facility for the development of the shallow continental shelf.

Known hydraulic structure to empower the operation of Jack-up floating drilling rig (rig), (see patent RU No. 2040638, IPC E02B 17/00 from 1993), including the upper structure with the supports and technological equipment, as well as resistant base and joints of the upper structure with resistant base. Ice-resistant base made in the form attached to the bottom of the underwater housing with installed one opposite to the other two ice pillars, towering over the water, on the upper ends of which are placed guides and installed between them with the possibility of lateral movement of the cantilever beams, facing each other ends, fork made in the plan and covering resistant supports, and the upper structure is made in the form of the rig with case and three support columns with the mechanism of ascent and descent, and building the rig is based on the fork ends of the cantilever beams.

The disadvantage of this known analogue is the complexity and lack of reliability of the rotation mechanism of the cantilever beams, the greater the PR, who died building of the rig when it is installed on cantilever beams compared to operation on the supports, (therefore there was no possibility to accept various stocks and goods to ensure drilling in navigational period of ice), as well as a large metal structure consisting of two stationary parts.

Also known drilling system for exploration of the shallow continental shelf (see patent RU No. 2382849, IPC E02B 17/00 from 2008), including a towed body, mounted on cantilever Jack-up drilling rig, passing through a towed body support for a Jack-up rig, with bottom base and the adjacent ice protection in the form of covering the support of a truncated cone, at least one auxiliary conductor with ice-resistant housing made with the possibility of a stationary installation on the underwater base and having upper superstructure to accommodate the operational equipment. The complex is provided with an outer U-shaped belt ice protection branch which is installed along the entire length of the towed body with a gap, involve the tip of the towed body with joining resistant housing block conductor, the belt protection from ice made in the form of pile structure.

The disadvantage of the known analog is a significant intensity, complexity and the complexity of installation is lengthy for the oops pile structure.

For the prototype of the proposed ice-resistant drilling facility for the development of the shallow continental shelf and method of formation of the ice-resistant drilling facility for the development of shallow continental shelf adopted known drilling system for exploration of the shallow continental shelf, which includes self-elevating floating drilling rig (rig) with a cantilever body and resistant supports, as well as the well-head with ice-resistant housing made with the possibility of fixed installations on the seabed and an upper superstructure to accommodate the equipment, each of these supports has outer and inner lining, and the space between the outer and inner covering filled with a bonding material, and the method of formation of the ice-resistant drilling facility for the development of the shallow continental shelf, which includes the transportation and installation on the seabed block conductor with ice-resistant housing having upper superstructure to accommodate the equipment, and self-elevating floating drilling rig with the cantilever body and resistant supports, and subsequent drilling through the mentioned block-conductor (see application EN 2008142999, IPC E02B 17/00 from 2007, in which there is a decision to grant a patent dated 24.01.2011).

The disadvantage wcasinogameroyah complex and method of its formation is the lack of reliability due to the significant size of the ice load, acting on at least two supports large diameter, the complexity of the design of the supports, with the filling between the casings, as well as a large linear weight composite supports, which leads to increase in size, increase performance and increase the weight of the lifting mechanism. Another drawback is the difficulty of aiming installation on previously installed anchor foundations, and in the case of setting at depths up to 10 meters of its impossibility due to the lack of gap vertically between the supporting plane of the installation and the highest point of the Foundation in accordance to the bottom position. In the case of pre-installation of foundations to the supports disadvantage will be the increase of the underwater volume that will not allow you to bring the installation in waters with a depth of 10 meters.

The technical result of the claimed group of inventions is to improve the reliability while simplifying the structure of the complex, as well as expanding its operational capabilities by providing installation in shallow water.

This technical result is achieved in ice-resistant drilling complex for development of shallow continental shelf, which includes self-elevating floating drilling rig with a cantilever having a housing and a support, at least one of which is resistant, as well as block-conduc is a PR ice-resistant housing, made with the possibility of fixed installations on the seabed and an upper superstructure to accommodate the equipment, the fact that the body self-elevating floating drilling rig is equipped with at least two sliding rails, oriented in the direction of the above-mentioned block-conductor and mounted with the possibility of lateral movement to transfer the load from the body of the Jack-up floating drilling rig by means of the above-mentioned skids on the block-the conductor, while in the case of the block-conductor is made corresponding to the sliding rails self-elevating floating drilling rig slot, and the ice-bearing self-elevating floating drilling rig is mounted with the possibility of pressure on the ground to transfer the load to the bottom of the sea when others support the installation completed delegatename and mounted with the possibility of rising above the body of the device after transferring the load from the casing through the well-head and resistant bearing on the bottom of the sea.

This technical result is also achieved in a method of forming ice-resistant drilling facility for the development of the shallow continental shelf, which includes the transportation and installation on the seabed block conductor with ice-resistant housing having upper superstructure to accommodate the equipment,and self-elevating floating drilling rig with the cantilever, having a housing and a support, at least one of which is ice, and the subsequent drilling through the said well-head, the fact that other support installation comply delegatename, these building self-elevating floating drilling rig pre-provide at least two sliding rails mounted with the possibility of lateral movement to transfer the load from the body of the Jack-up floating drilling rig by means of the above-mentioned skids on the block-conductor and multi-conductor perform appropriate referred to the sliding rails of the nest, then in ice-free period form the mentioned sector, which during the summer season initially transported referred to the well-head and place it on the bottom of the sea by ballasting with subsequent pile driving, and then to place of installation, the block-conductor transported mentioned self-elevating floating drilling rig, lowered her feet to the bottom of the sea, produce, push the poles into the ground, then make a nomination referred to runners to their full interaction with the corresponding slots of the block-conductor, then after the load transfer at the well-head neradostnye supports up above the case mentioned self-elevating floating drilling rig p and resting on the bottom of the sea ice support, then produce a sliding cantilever mentioned installation at the well-head for further drilling process.

This technical result is also achieved in ice-resistant drilling complex for development of shallow continental shelf, which includes self-elevating floating drilling rig with a cantilever having a housing and a support, at least one of which is resistant, and well-head with ice-resistant housing made with the possibility of fixed installations on the seabed and an upper superstructure to accommodate the equipment, the fact that the said well-head supplied mounted with the possibility of horizontal movement of sliding for supporting her body Jack-up floating drilling rig, and the ice-bearing self-elevating floating drilling rig is mounted with the possibility the pressure on the ground to transfer the load to the bottom of the sea, while the other supports the installation completed delegatename and mounted with the possibility of rising above the plant body after transfer of the load from the said casing through the well-head and resistant bearing on the bottom of the sea.

This technical result is also achieved in a method of forming ice-resistant drilling facility for the development of melkovod the th of the continental shelf, includes transport and installation on the seabed block conductor with ice-resistant housing having upper superstructure to accommodate the equipment, and self-elevating floating drilling rig with a cantilever having a housing and a support, at least one of which is ice, and the subsequent drilling through the said well-head, the fact that other support installation comply delegatename, and the aforementioned block-conductor pre-supply mounted with the possibility of horizontal movement of sliding for supporting her body Jack-up floating drilling rig, and then in ice-free period form the said complex, which at the time summer season initially transported mentioned the well-head and place it on the bottom of the sea by ballasting with subsequent pile driving, and then to place of installation, the block-conductor transported mentioned self-elevating floating drilling rig, lowered her feet to the bottom of the sea, produce, push the poles into the ground, make a nomination referred to drawer console unit-conductor and lowering her body Jack-up floating drilling rig, then after the load transfer at the well-head neradostnye supports up above the case mentioned self-elevating floating b the global setup when resting on the bottom of the sea ice support, then produce a sliding cantilever on said well-head for further drilling process.

Figure 1 - shows the side view of the inventive complex Assembly; items 1, 2;

figure 2 is a top view of figure 1;

figure 3 - side view on the Jack-up platform and multi-conductor at the time of delivery platform to a point;

figure 4 is a side view on a Jack-up platform and multi-conductor at the time of installation of the platform on the seabed;

figure 5 is a side view on a Jack-up platform and multi-conductor, connections runners nominated from a Jack-up rig;

figure 6 - side view of the mechanism for moving runners;

figure 7 - shows the side view of the inventive complex Assembly with the sliding of the block-conductor console;

on Fig - side view on the Jack-up platform and multi-conductor on 3, 4, at the time of delivery platform to a point;

figure 9 is a side view on a Jack-up platform and multi-conductor, at the time of transferring the load from the platform to the sliding console, when resting on the seabed support columns;

figure 10 - side view on the Jack-up platform and multi-conductor at the time of transfer of the load resting on the seabed support columns.

The claimed drilling system for exploration of the shallow continental shelf described in the independent is isimon to claim 1 claims, includes self-elevating floating drilling rig with the cantilever 1 with derrick 2 having a housing 3, bearings 4 and 5 and the lifting mechanism (not shown). When this bearing 4 is resistant, and the support 5 is made delegatename.

In addition, the inventive complex contains the well-head with resistant housing 6 made with the possibility of fixed installations on the seabed and an upper superstructure 7 to accommodate the equipment.

To increase reliability while simplifying the structure of the complex, as well as expanding its operational capabilities by providing installation in shallow waters mentioned case 3 Jack-up floating drilling rig is equipped with at least two sliding rails 8, which are oriented in the direction of the above-mentioned block-conductor housing 6.

Runners 8 are mounted with the possibility of lateral movement by means of a hydraulic mechanism comprising hydraulic cylinders 9 and the slider 10 to transfer the load from the casing 3 with the rig through the mentioned rails 8 on block 6 block conductor.

In case 6, the block-conductor is made corresponding to the sliding rails 8 Jack-UPS socket 11.

Resistant bearing 4 Jack-up rig is mounted with the possibility of pressure on the ground to transfer the load to the bottom of the sea, and the support 5 is made delegateuri and is mounted with the possibility of rising above the body 3 of the installation by means of the lifting mechanism (not shown) after the transfer of load from the casing 3 through the housing 6 block-conductor and resistant bearing 4 on the bottom of the sea.

For fixing the housing 6 block conductor provided by the piles 12.

The inventive method of forming a specified ice-resistant drilling facility for the development of shallow continental shelf described in independent claim 2 and depicted in figure 1-5, is implemented as follows.

Initially, during the summer season through the vessel-towing vehicle (not shown) is transported to the well-head with the body 6 and 7 add-and place it on the bottom of the sea by ballasting with subsequent piling 12 by means of pile driving equipment installed, for example, on the floating crane (not shown), and then to place of installation, the block-conductor housing 6 is transported self-elevating floating drilling rig (the rig) with housing 3, and bring it to the body 6 of block conductor to ensure the required clearance vertically and the distance in the horizontal direction from the housing 6 the block-conductor. Then lower bearings 4 and 5 of the rig on the bottom of the sea, lifting mechanism (not shown) to produce the push the latter into the ground, after which by means of a hydraulic mechanism for moving produce extension runners 8 to their full interaction with the corresponding slots 11 in the housing 6 block conductor. Then after load transfer at the well-head neradostnye support 5 under imaut above the body 3 of the rig when resting on the bottom of the sea ice pillar 4, then produce a sliding cantilever 1 with the drilling rig 2 rig on the add-7 block-conductor for further drilling process.

According to independent claim 3 of the formula of the invention the inventive drilling system for exploration of the shallow continental shelf includes self-elevating floating drilling rig with the cantilever 1 with derrick 2 having a housing 3, bearings 4 and 5 and the lifting mechanism (not shown). When this bearing 4 is resistant, and the support 5 is made delegatename.

In addition, the inventive complex contains the well-head with resistant housing 6 made with the possibility of fixed installations on the seabed and an upper superstructure 7 to accommodate the equipment.

To increase reliability while simplifying the structure of the complex, as well as expanding its operational capabilities by providing installation in shallow water-resistant bearing 4 Jack-up rig is mounted with the possibility of pressure on the ground to transfer the load to the bottom of the sea, and the support 5 is made delegatename and mounted with the possibility of rising above the body 3 of the installation by means of the lifting mechanism (not shown) after the transfer of load from the casing 3 through the housing 6 block-conductor and resistant bearing 4 on the bottom of the sea.

For fixing the housing 6 unit-cond is ktora provided by the piles 12.

The housing 6 block-conductor equipped with a mounted with the possibility of horizontal movement of sliding 13 for supporting her case 3 Jack-UPS. The console 13 is a hydraulic transfer mechanism similar to the mechanism for moving the sliding runners described in items 1, 2.

The inventive method of forming a specified ice-resistant drilling facility for the development of shallow continental shelf described in independent claim 4 of the formula of the invention and depicted in Fig.7-10, is implemented as follows.

Initially, during the summer season through the vessel-towing vehicle (not shown) is transported to the well-head with the body 6 and 7 add-and place it on the bottom of the sea by ballasting with subsequent piling 12 by means of pile driving equipment installed, for example, on the floating crane (not shown), and Then to place of installation, the block-conductor housing 6 is transported self-elevating floating drilling rig with the housing 3, and bring it to the body 6 of block conductor to ensure the required clearance vertically and the distance in the horizontal direction from the housing 6 block conductor. Then lower bearings 4 and 5 of the rig on the bottom of the sea, lifting mechanism (not shown) to produce the push the latter into the ground.

Then through the hydraulic is echanism move, installed in the flow conductor, similar to the mechanism previously described in the independent claim 1, make the nomination console 13 of the housing 6 block-conductor and lowered by a lifting mechanism (not shown) on her case 3 Jack-UPS. Then transfer the load to the block 6 block conductor neradostnye support 5 raised above the body 3 of the rig when resting on the bottom of the sea ice pillar 4, after which produce a sliding cantilever 1 with the drilling rig 2 rig on the add-7 block-conductor for further drilling process.

The bearing housing 3 can be made not directly to the console 13, and through the cushions of the type of dock or foundations (not shown).

The claimed group of inventions can improve reliability while simplifying the structure of the complex, as well as provides enhanced operational capabilities by setting the shallow water on the ice conditions.

1. Drilling system for exploration of the shallow continental shelf, which includes self-elevating floating drilling rig with a cantilever having a housing and a support, at least one of which is resistant, and well-head with ice-resistant housing made with the possibility of fixed installations on the seabed and an upper superstructure to accommodate the equipment, characterized in that Thu is mentioned case self-elevating floating drilling rig is equipped with at least two sliding runners, oriented in the direction of the above-mentioned block-conductor and mounted with the possibility of lateral movement to transfer the load from the body of the Jack-up installation by means of the above-mentioned skids on the block-the conductor, while in the case of the block-conductor is made corresponding to the sliding rails self-elevating floating drilling rig slot, and the ice-bearing self-elevating floating drilling rig is mounted with the ability to operate on the ground to transfer the load to the bottom of the sea, while the other supports the installation completed delegatename and mounted with the possibility of rising above the body of the device after transferring the load from the casing through the well-head and resistant bearing on the bottom of the sea.

2. The method of formation of the ice-resistant drilling facility for the development of the shallow continental shelf, which includes the transportation and installation on the seabed block conductor with ice-resistant housing having upper superstructure to accommodate the equipment, and self-elevating floating drilling rig with a cantilever having a housing and a support, at least one of which is ice, and the subsequent drilling through the mentioned block-conductor, characterized in that the other support installation comply delegatename, these case samood the bit floating drilling rig pre furnish not less than two drawer runners mounted with the possibility of lateral movement to transfer the load from the body of the Jack-up floating drilling rig by means of the above-mentioned skids on the block-conductor and multi-conductor perform appropriate referred to the sliding rails of the nest, then in ice-free period form the mentioned sector, which during the summer season initially transported mentioned the well-head and place it on the bottom of the sea by ballasting with subsequent pile driving, and then to place of installation, the block-conductor transported mentioned self-elevating floating drilling rig, lowered her feet to the bottom of the sea, produce, push the poles into the ground, then make a nomination referred to runners up to their full interaction with the corresponding slots of the block-conductor, then after the load transfer at the well-head neradostnye supports up above the case referred to Jack up rig when resting on the bottom of the sea ice pillar, after which produce a sliding cantilever mentioned installation at the well-head for further drilling process.

3. Drilling system for exploration of the shallow continental shelf, which includes self-elevating floating drilling rig with cantil verum, with housing and supports at least one of which is resistant, and well-head with ice-resistant housing made with the possibility of fixed installations on the seabed and an upper superstructure to accommodate the equipment, characterized in that the said well-head supplied mounted with the possibility of horizontal movement of sliding for supporting her body Jack-up floating drilling rig, and the ice-bearing self-elevating floating drilling rig is mounted with the possibility of pressure on the ground to transfer the load to the bottom of the sea, while the other supports the installation completed delegatename and mounted with the possibility of rising above the plant body after transfer of the load from the said casing through the well-head and resistant bearing on the bottom of the sea.

4. The method of formation of the ice-resistant drilling facility for the development of the shallow continental shelf, which includes the transportation and installation on the seabed block conductor with ice-resistant housing having upper superstructure to accommodate the equipment, and self-elevating floating drilling rig with a cantilever having a housing and a support, at least one of which is ice, and the subsequent drilling through the said well-head, the best of the decomposing those what other support installation comply delegatename, and the aforementioned block-conductor pre-supply mounted with the possibility of horizontal movement of sliding for supporting her body Jack-up floating drilling rig, and then in ice-free period form the mentioned sector, which during the summer season initially transported mentioned the well-head and place it on the bottom of the sea by ballasting with subsequent pile driving, and then to place of installation, the block-conductor transported mentioned self-elevating floating drilling rig, lowered her feet to the bottom of the sea, produce, push the poles into the ground, then make a nomination referred to drawer console unit-conductor and lowering her body Jack-up floating drilling rig, then after the load transfer at the well-head neradostnye supports up above the case referred to Jack up rig when resting on the bottom of the sea ice pillar, after which produce a sliding cantilever on said well-head for further drilling.



 

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13 cl, 7 dwg

FIELD: construction.

SUBSTANCE: superstructure is built on a building slip in a dock on a support deck installed on side walls of the dock. A transport barge that has taken the ballast is introduced into the dock under the superstructure, and the superstructure is installed by means of ballast pumping away from the barge on its deck with its subsequent transportation to a marine oil and gas field. A hydraulic engineering pocket is arranged in place of installation of a support part of a marine oil and gas production facility on the marine oil and gas field. Length, width and depth of the latter make it possible to lead the transport barge to the support part, to install the superstructure onto the support part after taking the ballast by the transport barge, and also to move the transport barge away from the marine oil and gas field after pumping of ballast from it.

EFFECT: invention makes it possible to eliminate using additional crane facilities for transportation and assembly of a superstructure of marine oil and gas production facilities onto a transport barge, and possibility to exclude construction of a marine channel for passage of a transport barge to an oil and gas field in shallow waters.

16 dwg

FIELD: construction.

SUBSTANCE: method to install a platform support block provides for support block transportation, its submersion to the sea bottom and installation onto soil. Ballast reservoirs are used during transportation. Ballast reservoirs are inner cavities of structure elements. During installation the first installation unit is ballasted down. The shaft is put into vertical position. Its eyes are brought to the level above sea surface. Spacers are ballasted to ensure hinged connection of their eyes with eyes of the vertical shaft. The ballast is pumped from the support ring pontoons and/or radial spacers and/or vertical shaft. Spacer ends are put in contact with the support ring due to slight surfacing up of the first installation unit. Spacers are rigidly fixed. Assembly pontoons are ballasted. Its lowering to the prepared bottom section is provided.

EFFECT: simplicity of structure installation, possibility of serial construction, high repairability and possibility of re-equipment in the dock.

6 dwg

FIELD: construction.

SUBSTANCE: ice-resistant support block of a marine engineering facility comprises a cylindrical shaft, a support unit and supporting braces. The shaft is made as hollow. The shaft is hingedly connected to supporting braces. The support unit comprises a support ring. The support ring is formed by at least three rectilinear pontoons. Pontoons are rigidly connected by their ends. The support ring is rigidly fixed to the cylindrical shaft by hollow radial spacers. Supporting braces are rigidly connected to the support ring by lower ends. Pontoons of the support ring, radial spacers, a cylindrical shaft and hollow supporting braces are made as capable of their floatability adjustment from positive to negative one.

EFFECT: invention provides for the possibility of serial construction, reduced labour intensiveness of installing a support block on site and its removal from soil, high repairability and capability of re-equipment in the dock.

8 cl, 6 dwg

FIELD: transport.

SUBSTANCE: invention relates to sea oil extraction platforms. Proposed SPAR platform 200 comprises hull 2202 with central hast 204. Air- and watertight partition 210 runs across central shaft to make variable-buoyancy compartment 220 in central shaft. In compliance with some versions, central shaft bottom is exposed in sea, while in compliance with other versions, central shaft bottom is sealed. At least one pipe 224 to house riser 227 runs through partition and said variable-buoyancy compartment. Said pipe has exposed top face to allows drainage of water accumulated in central shaft to make air- and watertight seal in joint with bulkhead. In some versions, two or more air- and watertight partitions 206, 208, 210 are arranged across central shaft to form one or more air- and watertight ballast tanks 216, 218 arranged fixed between every adjacent pair of bulkheads.

EFFECT: increased platform buoyancy due to its adjustment by central shaft.

16 cl, 4 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to production of buoyant structures equipped with landing strips for helicopters to be used as buoyant helidecks. Proposed helideck comprises top deck with helicopter complex jointed with bottom pontoons by stabilising columns. Said helideck is equipped with anchoring system including buoy integrated with turret whereto connected are anchoring system links, located to interact with shaft of one of aforesaid stabilising columns.

EFFECT: higher safety and optimum conditions for helicopter takeoff and landing.

3 dwg

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