Universal adapter for downhole drill motor with conductors or ports

FIELD: mining.

SUBSTANCE: drill string bottom part assembly comprises downhole motor fitted at said drill string and having rotor and stator. Note here that first hole is made in said rotor. Spindle arranged under downhole motor with second hole made therein. Third hole is made in the shaft with first and second ends. First end is coupled with rotor via first universal adapter. Second end is coupled with spindle via second universal adapter. Inner rod is fitted in the shaft third hole. Note here that inner rod has inner passage and third and fourth ends. Third end seals communication of inner passage with the rotor first hole while fourth end seals communication of inner passage with the spindle second hole.

EFFECT: transducer signal transmission, power supply inside assembly spinning elements.

21 cl, 8 dwg

 

The present invention relates to a drilling device and, more specifically, to a universal adapter for downhole drilling motor with wires or ports.

In borehole Geophysics can be performed parametric measurements over a wide range, including chemical and physical characteristics of the formation, which penetrates well, as well as characteristics of the well and the material in it. Measurements were also carried out to determine the passage of the borehole during drilling to control the operation of drilling or planning elements of a well after drilling. For measuring parameters of interest as a function of hole depth drill string can be moved along the borehole, one or more sensors logging or sensors for measuring downhole parameters so that the measurements performed by the sensors during drilling of the well.

As shown in figa, drill string 30 is placed in the borehole 12 from the drilling rig 20 and is located on her site 40 of the lower part of the drill string. Drilling rig 20 is drilling winch and other systems to control the drillstring 30 as it moves, and has a pump (not shown), which pump the clay or mud through the drill string 30. The node 40 of the lower part of the drill string has a section 50 of electronics, buril the first motor 60 and the panel section 70. The drilling fluid flows from the drill string 30 through the electronics section 50 to the rotor-stator element in a downhole motor 60. Driven injected mud motor 60 informs the torque of the drilling bit 34 for rotation of the bit 34 and deepening of wells 12. The drilling fluid flows through the drill bit 34 and returns to the surface through the hole of the well. Circulating the drilling fluid removes the cuttings from wells 12, controls the pressure inside the well 12 and cools the drill bit 34.

Surface equipment 22 having mounted at the mouth of the borehole telemetry unit (not shown)may receive signals from one or more sensors located in the instrument section 70 of the site. When combined with data on the depth of the sensor signals can form wireline logs of one or more parameters of interest. Usually ground equipment 22 and section 50 of electronics transmit data using telemetry systems known in the art, including pulse, acoustic and electromagnetic systems used for drilling mud.

Shown in more detail in figv section 50 of the electronics connected to the drillstring 30 via a connecting element 32. Section 50 contains electronics electronic logging areas is 52 and allows drilling mud to flow through itself. The logging probe 52 includes a downhole telemetry unit 58, a power source 54, various sensors 56. The connecting elements 42/44 connect the downhole motor 60 with section 50 of electronics, and the connecting member 42 has a telematics terminal, which has electrical connection with items in logging probe 52.

The drilling fluid flows from the drill string 30 through the electronics section 50 through the connecting elements 42/44 to the downhole motor 60, which has a rotor 64 and stator 62. Flowing down the drilling fluid rotates the rotor 64 in the stator 62. In turn, the rotor 64 is connected through a flexible shaft 66 with the drive shaft 72 supported on bearings 68. The flexible shaft 66 transmits the power from the rotor 64 to the drive shaft 72.

Located under downhole motor 60 instrument section 70 has one or more sensors 74 and electronics 76 to control the sensors 74. The power source 78, such as a battery, may provide energy to the sensors 74 and electronics 76, if the power is not supplied from sources above the downhole motor 60. Drill bit (34; figa) connected to the sub 36 to the bit, and one or more sensors 74 are located as close as possible to the drilling bit (34) to perform more accurate measurements. The sensor signals are transmitted from the sensors 74 to the downhole telemetry unit 58, the location is completely above the downhole motor 60. In turn, the sensor signals are transmitted by telemetry upward to the surface through the block 58 by means of a pulse, electromagnetic, or acoustic telemetry used for drilling mud.

Since the control section 70 is located in the node 40 of the lower part of the drill string under downhole motor 60, the rotational nature of the downhole motor 60 is an obstacle to communicate with downhole sensors 74. As shown, the sensors 74 have a wired connection to the electronics section 50 through conductors 46, located inside the rotating elements of the downhole motor 60. In particular, the conductors 46 connected to the sensor 74 and electronics 76 at the lower terminal (terminus) 48A and pass up through the drive shaft 72, the flexible shaft 66 and the rotor 64. Ultimately, the conductors 46 at the upper end of the terminal 48b inside the coupling element 44 downhole motor. As the lower terminal, this upper terminal 48b is rotated as the conductors 46.

Moving through the flexible shaft 66 conductors 46 create difficulties with sealing and can be expensive to implement. Figure 2 shows the design of the prior art for a wired connection through the downhole motor 60 between the downhole elements (sensors, power supply, electronics and so on) and the elements located above the well (CPU, telemetry unit, and so on). Shows the flexible shaft 66 for connecting the transmission power of the engine from the rotor 64 to the drive shaft 72 supported on bearings 68. The flexible shaft 66 has a reduced cross-section, such that it can bend in the lateral direction while maintaining the longitudinal and torsional stiffness for transmitting rotation from downhole motor 60 to the drilling bit (not shown). The Central hole 67 in the flexible shaft 66 has a free space to accommodate the conductors 46.

The flexible shaft 66 is elongated shaft and is located on the top and bottom adapters 69a-b. The shaft 66 and each adapter 69a-b form a hole 67 so that the conductors 46 that is used to supply power and/or data could pass through them. Adapter 69a-b are typically installed by the method of shrink fit or press fit with an interference fit on the shaft 66.

The current down from the stator 62 and the rotor 64 drilling fluid passes into the annular space around the shaft 66 and adapter 69a-b. Hot to the interference fit of the adapter 69a-b on the shaft 66 creates a hermetic seal that prevents the passage of drilling mud in the hole 67 of the shaft adapters 69a-b. Channel 69c to the lower adapter 69a allows drilling mud to enter the Central opening 73 of the drive shaft 72 so that the drilling fluid could b shall be submitted to the drilling bit (not shown).

The flexible shaft 66 should be sufficiently long to convert the orbital movement of the rotor 64 in a purely rotational movement of the drive shaft 72, maintaining at the same time, the desired torque, voltage and the like. Moreover, the flexible shaft 66 should be made of durable material having a low rigidity, to reduce stress in bending (for a given bending moment), and to minimize lateral loads acting on the surrounding radial bearings 68. For these reasons, the flexible shaft 66 is usually made of titanium and may have a length of from 4.5 to 5 feet (from 1.37 to 1,525 m). Thus, the shaft 66 can be quite expensive and difficult to manufacture. Moreover, the terminal adapter 69a-b are set by the shrink-fit method with tightness at the ends of the shaft 66 to create an airtight seal to keep mud out of the inner bore 67 in the shaft 66. Although the installation of the shrink-fit method with tension reducers 69a-b solves the problems of sealing, such a construction can be expensive and difficult to manufacture and assemble.

The present invention is directed to overcoming or at least reducing the effects of one or more of the problems described above by providing a universal adapter for downhole drilling motor is a dye, having wires or ports.

The junction of the lower part of the drill string has a downhole motor, the spindle and gear section. Downhole motor has a rotor and a stator, and the rotor is formed a hole for the passage of one or more conductors. The spindle has a hole for the passage of conductors and mud, and the rotation of the spindle rotates the drill bit. Drilling mud is injected into the drill string passes through the downhole motor and causes the rotor to move in an orbit inside the stator. The drilling fluid passes the transmission section and enters the canal in the bore of the spindle for drilling fluid could be delivered to the drilling bit on the spindle.

Shaft in the transmission section has a hole and converts the orbital movement of the downhole motor into rotational movement of the spindle. The shaft is connected at the first end of the rotor through a first universal adapter and connected at the second end of the spindle by universal adapter. In the hole of the shaft is the inner channel or rod. The shaft may be made of stainless steel, while the inner channel may be made of titanium.

This pin has an internal through passage for connection of conductors with opposite ends. These protivopolozhnykh seal the inner part of the passages of the universal adapter. In particular, each of these ends of the inner rod is located a sealing cap, which seals the inner part of the passages of the universal adapter. Thus, the drilling fluid emerging from the mud motor and passing around the transmission shaft, unable to communicate with the shaft hole around the inner rod with the guides.

With his hand each universal adapter may have a coupling element connected to the rotor, and may have a socket in which is inserted the end of the shaft. At least one bearing is located in the bearing pocket in the end of the shaft, and at least one bearing gap includes at least one bearing. For holding the bearing retaining ring can be placed around the end of the shaft next to the slot in the connecting element.

The spindle is located under the motor section may have an electronic device, such as an associated sensor. The conductors are electrically connected with the electronic device and pass from the hole of the spindle through the inner passage of the inner rod to the hole of the rotor. For example, the conductors may extend from the sensor in the spindle, to a logging sonde located above the downhole motor. The sensor may be a detector of gamma radiation, neutron the detector, inclinometer, an accelerometer, an acoustic sensor, an electromagnetic sensor, pressure sensor, temperature sensor. The conductors can be one or more separate wires, wires, twisted pairs, shielded multi-conductor cable, coaxial cable, optical fiber, and the like.

The above invention is not intended to summarize each potential option of implementing each aspect of the present invention.

The invention is illustrated in the drawings, where:

On figa schematically shows a drilling system of the prior art, located in the well.

On FIGU shown in more detail node in the lower part of the drill string prior art.

Figure 2 shows the flexible shaft with the pass-through conductors.

Figure 3 shows schematically the Assembly in the lower part in accordance with the present invention.

Figure 4 shows the host portion of the lower part having a transmission section in accordance with the present invention.

Figure 5 depicts the host portion of the lower part of figure 4.

On figa detail showing the upper connection gear section of figure 5.

On FIGU detail showing the lower connection gear section of figure 5.

The node 100 of the lower part, in compliance and with the present invention, shown schematically in figure 3, is connected to the drillstring 30 through the coupling element 32 and is placed into the borehole from the drilling rig (not shown). The node 100 of the lower part is the electronics section 50, section 110 downhole motor, the transmission section 120 and the panel section 70. Drill bit (not shown) located at the connection 36 to sub to the drill bit on the end node 100 so as to carry out the drilling of a well.

Section 50 of electronics such as that described previously, and includes electronic logging probe 52, having a power source 54, the sensors 56 and downhole telemetry unit 58. Located under section 50 of the electronics section 110 downhole motor has a stator 112 and the rotor 114. Drilling fluid from the drill string 30 flows through the connecting member 42 of the downhole telemetry and the connecting element 44 downhole motor section 110. Here flowing down the drilling fluid rotates the rotor 114 inside the stator 112. In turn, the rotor 114 is connected via a transmission shaft 130 with the spindle or drive shaft 170, based on the bearings 174 and transmission shaft 130 transmits power from the rotor 114 to the drive shaft 170.

The control section 70 is located under the transmission section 120. The control section 70 also like the instrumental section, described previously, which includes one or more sensors 74, kit electronics 76 and, optionally, the power source 78. (Because the pipe 108 to the conductors has wires that can transmit power, the power source 78 may not be required within the instrument section 70.) One or more sensors 74 can be sensory or measuring devices of any type used in geophysical borehole measurements, including gamma-ray detectors, neutron detectors, inclinometers, accelerometers, acoustic sensors, electromagnetic sensors, pressure sensors, temperature sensors, and the like.

One or more sensors 74 react during drilling to the desired settings. For example, the sensors 74 can receive logging logging parameters and characteristics of drilling, such as direction, speed, weight/torque on the drill bit and the like, as required for a particular scenario of drilling. In turn, the sensor signals are transmitted from the sensors 74 to the downhole telemetry unit 58 located above the section 60 downhole motor, through pipe 108 to the conductors. For transmission of sensor signals via the connecting elements 42/44 can be used several ways, including the methods disclosed in U.S. patent No. 7303007, which is included in the present description is for reference in its entirety. In his ceredi, the sensor signals are transmitted by telemetry through block 58 upward to the surface, using a pulse of electromagnetic or acoustic telemetry for mud. Conversely, information can be transferred from located on the surface telemetry unit and received downhole telemetry unit 58. This passing down information can be used to control the sensors 40 or to control the direction in which the well is progressing.

Since the control section 70 is located in the node 100 of the lower part of the drill string under section 110 of the downhole motor, the rotational nature of the section 110 downhole motor is an obstacle to the connection telematics unit 58, a power source 54, and the like located at the bottom under section 110 downhole motor sensors 74.

For signal transmission of the sensor, power supply, and the like channel 108 for conductors located inside the rotating elements of the node 100 of the lower part of the drill string and has one or more conductors that connect the logging probe 52 with the instrument section 70 and other elements. As, for example, shown in figure 3, the sensor 74 and electronics 76 electrically connected to the lower terminal 48a to the conductors in the channel 108 for conductors. These conductors in Cana is e 108 to conductor may be a single wire, twisted pairs, shielded multi-conductor cable, coaxial cable, optical fiber, and the like.

The pipe 108 to conductor passes from the lower terminal 48a and passes through the spindle or drive shaft 170, the transmission section 120 and the rotor 114 of the section of the engine. Ultimately, the pipe 108 to the conductors is interrupted at the upper terminal 48b in the connecting element 44 downhole motor. As the lower terminal, this upper terminal rotates as the pipe 108 to the conductors. Various clamping devices, wire tensioner, rotating electrical connections and the like (not shown) can be used to support the pipe 108 for conductors and for their passage through the lower part 100 of the drill string.

As shown in figure 3, the transmission section 120 has a transmission shaft 130, located between the upper and lower universal adapter 140a-b. Transmission shaft 130 and a universal adapter 140a-b connect the rotor section 114 of the motor drive shaft 170 and transform the orbital movement of the rotor 114 in the rotational displacement of the drive shaft 170. The pipe 108 to the conductors also passes through the transmission shaft 130 and a universal adapter 140a-b, as they link located at the bottom of the sensor 74 located at the top of El kelaa the customers (for example, telemetry unit 58, a power source 54, and so on).

Additional details of the transmission section 120 best shown in figure 4 and 5. As shown, the housing 102 of the transmission section 120 has a number of interrelated case elements to facilitate Assembly and allow for some bending. For example, the housing 102 has a connection 103 of the stator, which is connected to the stator 112. A regulating unit 104 is located between the connection 103 and the gear housing 105. This regulating unit 104 provides some bending of the downhole motor.

The pipe 108 to conductor passes from the top elements (e.g., telemetry unit, power supply and so on) through the rotor 114, through the device, the upper universal adapter 140b, through the transmission shaft 130 through the lower universal adapter 140a drive shaft 170. The pipe 108 to the conductors passes through the hole 172 of the drive shaft 170 at the bottom to the elements (e.g. sensors, electronics, and so on).

The current down the drilling fluid rotates the rotor 114 inside the stator 112. In turn, the rotor 114 is connected with the transmission shaft 130, which converts the orbital movement of the rotor 114 in the rotational movement of spindle or drive shaft 170. At the lower end of the node 100 of the lower part beriln the th column drive shaft 170 rests on the bearing unit 174. Bearing unit 174 provides radial and axial support of the drive shaft 170. As, for example, shown in figure 4, bearing Assembly 174 has bearings 174a for axial bearing and the bearings 174b for radial bearings. Although shown schematically, bearing unit 174 may have a plain bearings, bearings, PDC bearings or the like. In turn, the drive shaft 170 is connected with other elements of the node 100 of the lower part of the drill string includes a drill bit.

After the passage of the rotor 114 and the stator 112 current down the drilling fluid passes around the gear shaft 130 and the universal adapter 140a-b. The terminal coupling element 176 connects the drive shaft 170 with the lower universal adapter 140a. This coupling element 176 has channels 177, which allow drilling mud around the transmission shaft 130 to pass the drive shaft 170, where the drilling fluid may continue to flow to the drilling bit (not shown). The limiter 106 of the flow is around the coupling element 176 in the space of the transmission housing 106 (105) to prevent flow between the transmission section 120 and bearing unit 174.

Next, refer to Fig. 6A-6B, which illustrates in greater detail the upper and lower connective elements of the transmission shaft 130 without rhodesa through it pipes (108) for conductors. Transmission shaft 130 has upper and lower ends 134a-b, United with the universal adapter 140a-b. Universal adapter 140a-b can take several forms. In the present embodiment, for example, each of these adapter 140a-b includes a coupling element 142 having a slot 143 in which are located the ends 134a-b of the shaft 130. Between the ends 134a-b and the slots 143 are provided resistant seat 149. One or more bearings 144 are located in the bearing pockets 135 at the ends 134a-b shaft 130 and slide in one or more of the bearing grooves 145 in the slot 143 of the connecting element 142. The retaining split ring 146 is located around the end of the shaft 130 is near the slot 143 and is connected to the connecting element 142. In addition, the sealing cuff 147 connects the split ring 146 to the shaft 130 to prevent the ingress of drilling mud and for balancing the pressure of lubricating oil in the drive to the internal pressure of the downhole motor. Sealing sleeve 148 holds the seal Assembly on the connecting element 142.

During rotation of the universal adapter 140a-b transmit rotation between the transmission shaft 130 and the rotor 114 and the spindle or drive shaft 170. In addition, universal adapter 140a-b allow the connection ends 134a-b transmission shaft to rotate during rotation. That is they way transmission shaft 130 can convert the orbital movement of the rotor 114 in a purely rotational movement of the drive shaft 170.

For the passage of pipes (108) to the conductors of the rotor 114 to the instrument under section drive shaft 170 in the transmission shaft 130 is formed a through hole 132. In order to solve the issue with a hydraulic seal at the connection ends 134a-b shaft with universal adapter 140a-b, the hole 132 of the transmission shaft has an inner shaft or rod 150 having its own hole 152. As described below, the rod 150 helps to seal the passage pipe (108) through the universal adapter 140a-b, and the rod 150 is bent to compensate for the eccentricity of the motor section and any bending of the downhole motor.

To prepare the transmission section 120 operators drill a hole 132 in the transmission shaft 130. Then the operators lower inner rod 150 into the hole 132 for sealing purposes. This inner core 150 may be made of stainless steel or titanium. Sealing cap 160a-b are located on opposite ends of the inner rod 150 and provide a seal between the adapter 140a-b and the inner rod 150. On the sealing caps 160a-b can be used o-rings or other the IDA seal for a tight fit in the hole 132 of the shaft and the rod 150.

In the final stages of Assembly operators pass pipe (108) for conductors through the inner rod 150 and the sealing cap 160a-b. Ultimately, the design prevents the message of the drilling fluid passing through the hole 132 of the shaft 130. Although the drilling fluid can still pass through the opening 152 of the rod 150 (for example, up through the connecting element 176), the shaft 130 and end cap 160a-b prevent the flow of drilling mud from universal adapter 140a-b into the hole 132 and around the pipe (108) to agents that may damage the pipe (108) for conductors.

Sealing cap 160a-b can be fixed in the intermediate passages in the connecting elements 142 various suitable ways. As shown, for example, the sealing cap 160a-b can be screwed into the intermediate passages and may include a ring or other sealing elements. The inner flange or collar in sealing the lids 160a-b can hold the ends of the inner rod 150. As shown, the inner rod 150 preferably has a value of outer diameter along most of its length less than the inner diameter of the hole 132 of the shaft. This may allow some bending and free play in the Assembly. The ends of the inner rod 150, however, can be planted over the tightly into the hole 132 to aid sealing.

Instead of transferring torque through planting with tightness, universal adapter 140a-b transmit torque through its universal connection to the ends 134a-b transmission shaft 130. The inner rod 150 seals the passage 152 and the hole 132 for pipes (108) for conductors from mud. The outer transmission shaft 130 may be much less than the usual flexible shaft made of titanium, used in the preceding technical field. Since the transmission section 120 has an inner and outer shafts 130/150, which rotate and move in an orbit along its length during operation, the sealing cap 160a-b are dealing with the axial movement of the inner rod 150 in sealing lids 160a-b relative to the connecting elements 142 of the adapter.

In contrast to the usually used more expensive titanium, transmission shaft 130 may be made of stainless steel or other conventional metal suitable for use in the borehole, while the shaft 130 may be made of titanium, if required. Moreover, the transmission shaft 130 may have a shorter length than the length, usually used for flexible shaft with adapter hot landing. In particular, the universal adapter 140a-b and their ability to convert the orbital movement of the rotor 114 in the history rotational displacement of the drive shaft 170 allow the transmission shaft 130 to be shorter than usually used. In fact, in some embodiments, introduction to comparable options used engine, transmission shaft 130 can be from 2 to 3 feet (from 0.61 to 0,915 m) length compared to the length value from 4 to 5 feet (1,22 up to 1,525 m)required for titanium flexible shaft with adapter hot landing of the prior art. In addition to a shorter length, the transmission shaft can be performed not out of the ordinary titanium, and other materials. For example, transmission shaft 130 can be made of more conventional materials (e.g. stainless steel) and can withstand torque and other forces acting during operation.

As described above, the transmission section 120 having outer and inner shafts 130/150 and universal adapter 140a-b can be used for downhole motor for passing the pipe 108 to the conductors to the electronic elements located near the drill bit. Further, the transmission section 120 may also find use in other applications. In one example, the inner rod 150, sealed inside the transmission shaft 130 and the universal adapter 140a-b can be used for hermetic move any number of other elements or components than the tube to be launched for the s, between the upper and lower node of the lower part of the drill string. In fact, the transmission shaft 130 with its sealed inner rod 150 may allow the drilling alternative solution to communicate outside of the outer shaft 130 or inside the inner rod 150 hermetic, when the communication between the downhole motor and drive shaft. Thus, the disclosed design of the transmission shaft, the inner channel and universal adapters can be useful for these and other applications.

The foregoing description of preferred and other embodiments of is not limited to or by the application of the invention, formulated by the applicants. In exchange for the disclosed inventive concept contained herein, applicants want to get all patent rights granted by the attached claims. Therefore, we must assume that the accompanying claims includes all the modifications and changes that fall within the scope of the subsequent claims or their equivalents.

1. The junction of the lower part of the drill string that contains:
downhole motor located on a drill string and having a rotor and a stator, and the rotor is made first hole;
the spindle is located below the downhole motor, in which you shall elnino the second hole;
the shaft, which made the third hole and which has first and second ends, the first end connected to the rotor through a first universal adapter, the second end connected with the spindle by means of a second universal adapter; and
the inner core is located in the third hole of the shaft, wherein the inner core has an internal passage and has third and fourth ends, the third end seals the message of the internal passage with the first hole of the rotor, and the fourth end seals the message of the internal passage with the second hole of the spindle.

2. The node according to claim 1, in which the first and second universal adapter and shaft transform the orbital movement of the rotor in the rotational movement of the spindle.

3. The node according to claim 1, additionally containing at least one sensor located in the spindle and operatively connected with one or more conductors, one or more conductors pass from the second hole of the spindle through the inner passage of the inner core to the first hole of the rotor.

4. The node of claim 1, wherein the first universal adapter includes a connecting element attached to the rotor and having a socket in which is inserted the first end of the shaft.

5. The node according to claim 4, in which the first universal adapter content is t at least one bearing, located in the bearing pocket in the first end of the shaft and is included in at least one of the bearing gap in the socket.

6. The node according to claim 4, in which the first universal adapter includes a retaining ring around the first end of the shaft next to the slot in the connecting element.

7. The node according to claim 1, in which the shaft is made of stainless steel, while the inner core is made of titanium.

8. The node of claim 1, wherein each of the first and second universal adapter contains an intermediate passage, the node further comprises a sealing cap located on each of the third and fourth ends of the inner rod and sealing the inner part of the intermediate channels.

9. The junction of the lower part of the drill string that contains:
drilling downhole motor having a rotor located in the stator, and the rotor is made first hole;
the first universal adapter connected to the rotor, having a first passage connected to the first hole;
a shaft having first and second ends, which made the second hole, the first end connected to the first universal adapter, while the second hole is connected with the first passage;
the second universal adapter connected to a second end of the shaft and having a second passage connected what about the second hole;
the spindle is connected to a second universal adapter and having a third hole, United with the second passage; and
the inner core is located in the second hole of the shaft, wherein the inner core having an inner passage and having third and fourth ends, the third end is sealed in the first passage and seals the message of the internal passage with the first hole of the rotor, and the fourth end is sealed in the second passage and seals the message of the internal passage with the third hole of the spindle.

10. The node according to claim 9, in which the first and second universal adapter and shaft transform the orbital movement of the rotor in the rotational movement of the spindle.

11. The node according to claim 9, further containing at least one sensor located in the spindle and operatively connected with one or more conductors, one or more conductors pass from the third hole of the spindle through the inner passage of the inner core to the first hole of the rotor.

12. The node according to claim 9, in which the first universal adapter includes a connecting element attached to the rotor and having a socket in which is inserted into the first end of the shaft.

13. The node indicated in paragraph 12, in which the first universal adapter comprises at least one bearing located within the bearing is the first pocket in the first end of the shaft and is included in at least one of the bearing gap in the socket.

14. The node indicated in paragraph 12, in which the first universal adapter includes a retaining ring around the first end of the shaft next to the slot in the connecting element.

15. The node indicated in paragraph 12, in which the shaft is made of stainless steel, while the inner core is made of titanium.

16. The node according to claim 9, further containing a sealing cover, located on each of the third and fourth ends of the inner rod and sealant inside the first and second passageways of the first and second universal joints.

17. The junction of the lower part of the drill string that contains:
downhole motor located on a drill string and having a rotor and a stator, and a rotor made the first hole for the passage of at least one conductor;
the spindle is located below the downhole motor and having a second opening for passage of at least one conductor;
at least one electronic device associated with the spindle and electrically connected to at least one conductor;
the shaft, which made the third hole and which converts the orbital movement of the downhole motor into rotational movement of the spindle and the shaft is connected at the first end of the rotor through a first universal adapter and connected at the second end with spend the LEM through a second universal adapter;
the inner core is located in the third hole of the shaft and having an internal passage for communication with at least one conductor between the third and fourth end and the third end is sealed inside the first passage of the first universal adapter, and the fourth end is sealed inside the second passage of the second universal adapter.

18. Site 17, in which at least one electronic device comprises a sensor selected from the group consisting of a gamma radiation detector, neutron detector, inclinometer, an accelerometer, an acoustic sensor, an electromagnetic sensor, pressure sensor, temperature sensor, and the like.

19. Site 17, in which the spindle is made channel which is connected with the annular space around the shaft in the node with the second hole of the spindle.

20. Site 17, further containing a logging probe located above the downhole motor and electrically connected to at least one conductor.

21. Site 17, in which at least one conductor selected from the group consisting of at least one or more separate wires, wires, twisted pairs, shielded multi-conductor cable, coaxial cable, optical fiber, and the like.



 

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13 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry and can be applied in dual operation of two strata in the same well. The installation contains a flow column located in the well casing thus forming tubular annulus, a packer, a submersible electric centrifugal pump, an electrical submersible cable passing through the packer and a regulating closing and bypass device in a cylindrical body installed in the packer and limited at butt ends by sleeves for cross flows of strata fluids. The body of the device is connected by its upper sleeve to the flow column at the level above gravel and sand filler in the tubular annulus above the packer. By its lower sleeve the body is connected to the pump through a sleeve adapter. In the upper sleeve there is an opening with a nipple installed in it resting upon the edge of a socket made in the lower sleeve which forms with the body a channel for fluid passage from the sleeve adapter to the flow column through longitudinal channels inside the sleeves and to this end two pairs of lip-type seals are installed at the nipple. In the nipple there is a needle valve with electric drive. In the nipple there are windows communicating with radial channels of the upper sleeve through the groove made from outside the nipple at the window level for fluid extraction depending on pressure drop in strata.

EFFECT: excluding effect of the upper stratum depression with possibility of regulation.

6 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to operating cables placed in hydrocarbon wells. The invention suggests a cable assembly for use in a hydrocarbon well of extended depth containing at least one well-head part and at least one bottom-hole part connected to each other. At that the well-head part of the cable has more tenslie strength in comparison with the bottom-hole part. Besides the well-head and bottom-hole parts of the cable have structural windings. Herewith quantity of structural windings in the bottom-hole part is less than quantity of structural windings in the well-head part per 30% at least.

EFFECT: providing use of the cable in super-deep wells.

22 cl, 8 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to well surveying and can be used for continuous monitoring of parameters in the well. The invention suggests the system of supervision that includes sensors, in particular, pressure and temperature sensors, a cable connecting the supervision system and the well head. At that the well head contains an electric terminal with a telemetric system for data acquisition and a power source for the well supervision system. Besides the electric terminal of the well head contains a command module for the well supervision system and a data storage module with a microprocessor.

EFFECT: simplifying the system for monitoring parameters in the well.

24 cl, 4 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to high-frequency data and/or power transmission systems which are suitable for borehole use, and includes connecting sleeves for signals/power, sections of a transmission line and transponders. Signals and power are transmitted between connecting sleeves and/or between connecting sleeves and transponders by electromagnetic resonance coupling. In at least part of the system, transmission line sections form parallel data transmission channels and transponders allow switching between data/power transmission channels, thereby considerably improving reliability. The invention also includes a method of transmitting data and/or distributing high-frequency power through a borehole transmission system, which includes a plurality of data/power transmission channels and a plurality of intersections, in which defective points in one data/power transmission channel are bypassed by routing data and/or power to parallel data/power transmission channels via electromagnetic resonance coupling.

EFFECT: high reliability.

52 cl, 22 dwg

FIELD: oil and gas industry.

SUBSTANCE: plant contains in the casing pipe a pipe string, electric pump, power cable and device for dual strata operation made in a housing consisting of adjustment units and production rate measurement unit that contain controlling valves and instruments and meters. The housing consists of pipes equipped with packers and connected by sleeves for cross-flow fluids. Controlling valves are made in a cage with installed electrically-actuated needle valve interacting with crossover seat. In cage walls there are windows made at both sides of crossover seat. Instruments and meters are located higher and/or lower than controlling valves; they are interconnected by a logging cable laid in the channel made in the cage wall. Adjustment units and production rate measurement units are connected to the power cable by logging cable, TMC adapter installed at the end-face of electric pump and cable socket, which pin is fixed at a mounting flange with openings installed at the end-face of the housing and a contact pair socket placed in the centring skid fixed at the end-face of electric pump.

EFFECT: increasing efficiency of dual operation of the well at optimum regulation of phase composition and metering of fluids from strata on real-time basis.

9 cl, 2 dwg

FIELD: mining.

SUBSTANCE: system of measurements while drilling is proposed, comprising the following connected components: a module of an electric generator-pulsator, a module of an inclinometer and a module of gamma logging, including telemetering units. At the same time the specified telemetering system additionally comprises a unit of analysis and control of a switchboard and a switchboard connected to the specified modules. Besides, the inlet of the switchboard analysis and control unit is connected to the outlet of the control unit of the gamma logging module pulsations and the first inlet of the switchboard. And the outlet of the switchboard analysis and control unit is connected to the inlet of switchboard control. Besides, the second inlet of the switchboard is connected to the outlet of the inclinometer module pulsations control unit, and the outlet of the switchboard is connected to the inlet of the pulsator, installed in the module of the electric generator-pulsator.

EFFECT: increased quality of well survey due to increased reliability of information transfer from a bottomface to surface.

7 cl, 1 dwg

Above-bit module // 2509209

FIELD: physics.

SUBSTANCE: apparatus has a housing with a central flushing hole, a centre electrode which is electrically insulated from the housing and is placed between insulators, as well as electric boards inserted in recesses in the housing in its sealed part, separated by sealing elements, wherein the fixing element of the insulator, situated in the socket part of the housing, is in form of matching protrusions and grooves made in said insulator, the socket part of the housing and the casing of the centre electrode, and the other insulator of the centre electrode, situated in the opposite socket part of the housing, is inserted in a counter-clockwise thread.

EFFECT: improved operational reliability of fixing the centre electrode and simple design.

1 dwg

FIELD: oil and gas industry.

SUBSTANCE: device contains a hollow body with a gerotor screw mechanism inside that includes a stator placed in the body coaxially and a rotor installed inside the stator and the rotor rotation is carried out by fluid delivered by the pump, a transmission section that includes a shaft mounted at the axial bearing made as a multirow thrust and radial bearing and at the upper and lower radial skid bases consisting of the outer and inner sleeves placed in the transmission section body and respectively at the transmission section shaft; the transmission section shaft is fixed at the input by a drive shaft with a rotor and at the output it is fixed with a chisel; the motor is equipped with the upper collar grab consisting of a shaft, a thrust and a nut and the lower collar grab made as a fishing collar with the outer fishing clamp, a thrust collar and the lower threaded crossover with an inner fishing clamp; the upper collar grab is fixed to the upper part of the gerotor screw mechanism while the lower collar grab in mounted at the transmission section shaft between the inner sleeve of the lower radial bearing and the axial bearing made as a multirow thrust and radial bearing. The transmission section shaft and the fishing collar of the lower collar grab with the outer fishing clamp are fixed rigidly with each other by means of a common thread thus providing tightness at butt ends of the thrust collar placed between butt ends of the fishing collar and the inner collar of the lower radial skid base. Cross-threading direction of the transmission section shaft and the fishing collar of the lower collar grab coincide with the direction of drill string rotation during tripping out.

EFFECT: improving accident-free operation, service life and reliability of motors, accuracy of hole making and the rate of parameters set for the hole curvature and passing ability.

5 cl, 2 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: proposed method comprises measuring the pressure in injection line with loaded and idle bit and maintaining constant measured differential pressure. Note here that maximum tolerable bit feed speed (Vtf) is defined by mathematical formula. Then, bit feed speeds are defined and in case it exceeds said maximum tolerable magnitude it is decreased to Vtf.

EFFECT: higher efficiency of drilling.

2 dwg

FIELD: mining.

SUBSTANCE: invention refers to drilling equipment, and namely to downhole motors for well drilling. A spindle includes a housing, a throttle and a shaft with a through axial channel, which is installed in the housing with possibility of axial movement within the limits of a guaranteed play. Between three sealed radial supports there installed are two sections of a multistage bearing plate to take an axial load in downward and upward directions. Each stage of the bearing plate consists of discs with supply hydraulic channels and flow centre plates, the rubber elements of which have annular chambers forming together with discs the thrust hydrostatic bearings. A throttle is replaceable and installed in an axial channel of the shaft. Diameter of the throttle pass for creation of pressure drop is chosen in compliance with an expected hydraulic load on the axial support in start-up operating mode of the motor. On outer surface of the shaft there are blind longitudinal slots hydraulically connecting in a separate manner a cavity above upper radial support to annular chambers of the upper section of the bearing plate and a cavity above the middle radial support to annular chambers of the lower section of the bearing plate. The cavity above lower radial support is hydraulically interconnected with the shaft axial channel below the throttle.

EFFECT: improvement of a motor structure.

1 cl, 3 dwg, 2 tbl

FIELD: oil and gas industry.

SUBSTANCE: unit to control power load onto working elements of a screw downhole motor comprises a half-coupling with radial and axial through channels, a spring-loaded container installed in the axial through channel of the half-coupling with a hydraulic monitor attachment, a burnisher of alternating cross section, installed as capable of axial displacement, a spring and seals. It also comprises a hollow pressing nut installed in the axial through channel of the half-coupling for interaction with the spring-loaded container and with an inner ledge made in the axial through channel of the half-coupling or the burnisher. The burnisher is made in the form of a replaceable tip installed onto the stem.

EFFECT: makes it possible to increase efficiency, reliability and durability.

3 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: motor includes a housing with a rotor arranged inside it, the rotation of which is performed by the fluid medium supplied with a pump, as well as a spindle housing with a shaft arranged inside it, which is installed on radial and axial sliding supports. The spindle shaft is attached to the motor rotor and a bit. Some amount of fluid medium is pumped through radial and axial sliding supports, and axial support of the spindle is made in the form of two pairs of rotor and stator rings with an annular row of thrust modules, which is fixed in each of them. Stator rings are fixed in the spindle housing, rotor rings are installed on the spindle shaft, and each thrust module includes layers of polycrystalline diamonds on the edge facing the edges of adjacent modules, and contacts in turn with one or two edges of adjacent modules. The motor includes a splined bush with external splines, which is installed on the spindle shaft, and two elastic damping supports arranged on the edges of the splined bush and receiving axial forces acting on the axial support of the spindle. Each elastic damping support contacts the rear edge of the corresponding rotor ring with the fixed annular row of thrust modules, and rotor rings with annular rows of thrust modules fixed in them are provided with internal splines corresponding to external splines of the splined bush, and each of them is installed with possibility of annular distortion of the rotor ring with the annular row of thrust modules, which is fixed in it, relative to its own elastic damping support.

EFFECT: increasing service life and improving reliability of the axial sliding support of the spindle of the hydraulic downhole motor with thrust modules; improving accuracy of curvature parameters of the well shaft; enlarging the hole boring per bit run using hydraulic jars in the tubing; increasing the increase rate of curvature parameters of wells, and reducing stresses in the layout of the bottom of the drill column and downtime of the drilling unit.

6 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: device includes frame 2, powder brake 3, kinematic chain A between outlet shaft of HBM 1 and rotor 4 of powder brake 3, hydraulic baffle plate 5, monitoring and testing unit 6 and date control and processing unit 7. Kinematic chain A is made in the form of gear-type conical multiplier 8 with coupling clutches 9, 10 in connections of its shafts 11 and 12 with outlet shaft B of HBM 1 and rotor 4 of powder brake 3. Hydraulic baffle plate 5 is made on cover plate 13 of multiplier 8 in the form of an annular reservoir enclosing with seal 14 the lower part of housing B of HBM 1.

EFFECT: improving accuracy and enlarging the HBM loading range at testing, and possibility of stand-alone use.

1 dwg

FIELD: machine building.

SUBSTANCE: invention is used for run-in and test of hydraulic bottomhole motor (HBM). When testing HBM 1, it is installed in a vertical position above well 2 of its further operation and attached to housing A by means of spinning wrench 3 on stationary drilling outfit 4 of well 2. Outlet shaft 5 of spindle 6 of HBM 1 is attached through coupling device 7 to inlet shaft 8 of multiplier 9 installed on rotary table 10. Rotation of rotor 11 with spindle 6 is performed by injection of working fluid to HBM 1 through adapter 12 of pump station 13 of drilling outfit 4 of well 2. Mechanical loading of outlet shaft 5 of spindle 6 is performed through multiplier 9 kinematically connected at its outlet shaft 15 to powder brake 17, with further measurement and analysis of revolutions and braking moments at the outlet of the latter, and flow rate and pressure of working fluid at HBM 1 inlet.

EFFECT: improving accuracy of the method and its approximation to HBM operating conditions.

1 dwg

FIELD: machine building.

SUBSTANCE: invention is used for run-in and test of hydraulic bottomhole motor (HBM). Bench includes drive device 2 having pump station 3, pressure line 4 and assembly 5 for attachment of HBM 1, loading device 6 having frame 7 and powder brake 8 kinematically connected to outlet end of HBM 1, monitoring and testing unit 9 and data control and processing unit 10. Loading device 6 is equipped with conical multiplier 11 with hollow inlet shaft 12 located normally to base 13 of frame 7. HBM 1 is installed in cavity 14 of inlet shaft 12 of multiplier 11 with outlet end with chisel 15 conjugated with half-coupling 16 made with cams A for chisel 15 at inlet shaft 12 of multiplier 11, the outlet shaft 17 of which is kinematically connected to rotor 19 of powder brake 8. Loading device 6 is fixed on rotary table 20 coaxially to inlet shaft 12 of multiplier 11. Drive device 2 is made in the form of a stationary drilling rig of well 21.

EFFECT: increase in testing accuracy and approximation of the bench design to HBM real operating conditions.

1 dwg

FIELD: machine building.

SUBSTANCE: screw hydraulic machine includes rotor and stator of screw shape without any elastomeric coating, which are installed with a gap. Stator is solid metal alloy ceramic or composite material. Rotor is directed on its ends with guide system to exclude direct contact to stator. In addition, rotor surface or stator surface have grooves.

EFFECT: improvement of screw machine design is provided.

16 cl, 7 dwg

FIELD: mining.

SUBSTANCE: invention relates to trilling equipment, particularly, to hydraulic motors at drill string bottom that define design motor angularity angle in inclined and horizontal oil wells. Regulator toothed coupling with internal lengthwise spline slots and teeth on face side directed toward curved tube adapter features inclined face on teeth side. Point in intersection between toothed coupling teeth central lengthwise axis with central lengthwise axis of its internal spline slots is located in coupling face on teeth side. Point of intersection between hollow curved shaft thread lengthwise axis and central lengthwise axis of said hollow tube adapter is located in face plane of toothed coupling on teeth side. Curved tube adapter has bearing segment site in cross-section of which located is the plane with point of intersection between central lengthwise axis of curved tube adapter connecting it with thread of hollow curved shaft and lengthwise central axis of curved hollow adapter thread for joint with spindle section body thread.

EFFECT: higher transmitted torque, longer life, higher reliability.

5 cl, 5 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: device has metallic hubs of stator and rotor, wherein crowns of stator and rotor are concentrically pressed. Crowns of stator and rotor are made of durable ceramics and are additionally equipped with connections, allowing to exclude non-controlled turning of crowns in hubs and spontaneous axial displacement thereof.

EFFECT: higher reliability and efficiency.

2 dwg

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