CN111058835A - Bidirectional communication short section - Google Patents
Bidirectional communication short section Download PDFInfo
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- CN111058835A CN111058835A CN201911234793.2A CN201911234793A CN111058835A CN 111058835 A CN111058835 A CN 111058835A CN 201911234793 A CN201911234793 A CN 201911234793A CN 111058835 A CN111058835 A CN 111058835A
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- drill collar
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- turbine generator
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- 230000007175 bidirectional communication Effects 0.000 title claims abstract description 32
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 13
- 210000002445 nipple Anatomy 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 2
- 239000002002 slurry Substances 0.000 description 12
- 230000006854 communication Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000007704 transition Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/16—Drill collars
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/02—Adaptations for drilling wells
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Geophysics (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a bidirectional communication short section, which relates to the technical field of logging-while-drilling equipment and comprises the following components: first drill collar, second drill collar and the third drill collar that connects gradually, wherein: a turbine generator is arranged in the first drill collar; the device comprises a first drill collar, a second drill collar, a turbine generator, a pulse generator, a first flow passage switching joint, a second flow passage switching joint, a first flow passage, a second flow passage switching joint and a second flow passage switching joint, wherein the first flow passage switching joint is arranged between the turbine generator and the second drill collar, the second flow passage switching joint is arranged between the second drill collar and the pulse generator, and the first flow passage, the second flow passage and the accommodating cavity are communicated through a flow passage hole formed in the second drill collar. According to the embodiment of the invention, the structure of the wire passing channel in the bidirectional communication short section is designed, so that the pulse generator and the turbine generator are integrated in the same short section, the length of a cable for supplying power to the pulse generator by the turbine generator is further reduced, and the line loss generated when the pulse generator is supplied with power by the turbine generator is reduced.
Description
Technical Field
The invention relates to the technical field of logging-while-drilling equipment, in particular to a bidirectional communication short section.
Background
Logging while drilling refers to measuring and uploading underground engineering parameters and geological parameters when a logging instrument drills. When the working mode of the downhole instrument needs to be changed, the command on the ground is also required to be transmitted through the command transmitting mechanism. The uploading of downhole information is currently commercialized, namely a mud pulse generator, the command of the ground is downloaded, and the command of the ground is mainly received by dividing down fluid through a flow dividing mechanism to change the rotating speed of a turbine generator or the pressure in a drill string, and a downhole sensor detects the rotating speed or the pressure change.
The high speed mud pulser is one of the mud pulsers. The actuating mechanism of the high-speed mud pulse generator adopts a motor. The power of the electric motor is typically around 50-300 watts, which requires a specific turbine generator to power it. When the motor of the high-speed pulse generator works, a large current of 6-10A is needed, and the large current causes great line loss when the turbine generator supplies power to the high-speed pulse generator. Meanwhile, the bus for supplying power to the high-speed pulse generator by the turbine generator also needs to transmit signals, and the cable for supplying power to the high-speed pulse generator by the turbine generator interferes with a signal transmission cable in the bus, so that the stability and reliability of communication between the short sections are influenced.
Disclosure of Invention
The embodiment of the invention provides a bidirectional communication short section, which is used for solving the problem of large line loss caused by the fact that a turbine generator supplies power for a high-current high-speed mud pulse generator.
In order to solve the above problems, the present invention provides a bidirectional communication nipple for logging while drilling, comprising: first drill collar, second drill collar and the third drill collar that connects gradually, wherein: a turbine generator is arranged in the first drill collar; the device comprises a first drill collar, a second drill collar, a turbine generator, an electronic framework, a pulse generator, a first flow passage switching joint, a second flow passage switching joint, a first line passing channel, a second line passing channel and a containing cavity, wherein the first flow passage switching joint is arranged between the turbine generator and the second drill collar, the second flow passage switching joint is arranged between the second drill collar and the pulse generator, the first line passing channel, the second line passing channel and the containing cavity are communicated through line passing holes formed in the second drill collar, and the turbine generator, the electronic framework and the pulse generator are sequentially and electrically connected through cables contained in the first line passing channel, the second line passing channel and the line passing holes.
The embodiment of the invention provides a bidirectional communication short section, and the pulse generator and a turbine generator are integrated into the same short section by designing the structure of a wire passing channel in the bidirectional communication short section, so that the length of a cable for supplying power to the pulse generator by the turbine generator can be reduced, and the line loss generated when the turbine generator supplies power to the pulse generator is further reduced. Meanwhile, the wire passing structure of the bidirectional communication nipple provided by the embodiment of the invention is simple, and can provide reference for the structural design of the inter-short-joint wire passing channel in the industry, thereby improving the standardization of the logging-while-drilling instrument in the industry.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a structural diagram of a bidirectional communication short joint provided in an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of a first drill collar according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the fourth flow switching fitting of FIG. 2 at position D-D;
FIG. 4 is a cross-sectional view of the first flow channel transition joint of FIG. 2 at a location C-C;
FIG. 5 is an enlarged view of a second drill collar position in accordance with an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of a third drill collar according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of the second flow path transition joint of FIG. 6 at a location E-E;
FIG. 8 is a cross-sectional view of the third flow channel transition joint of FIG. 6 at a position F-F.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The actuating mechanism of the high-speed mud pulse generator adopts a motor. The power of the motor is generally about 50-300 watts, the power supply needs large current of 6A-10A, and the turbine generator and the pulse generator are positioned at different short joints, so that large line loss can be generated when the turbine generator supplies power for the large current of the pulse generator. Meanwhile, at present, no standardized design flow, design style and design principle are available for design of the while-drilling instrument, and developers of petroleum logging instruments design single instruments according to understanding of the instruments and functions and in combination with the existing system, so that no mature design experience can be referred to, and how to reduce line loss through short section structural design becomes a great problem in design and development of the while-drilling instrument.
In order to solve the problem of large line loss caused by the fact that a turbine generator supplies power for a large current of a mud pulse generator, the embodiment of the invention provides a bidirectional communication short section which is used for logging while drilling and comprises the following components: first drill collar, second drill collar and the third drill collar that connects gradually, wherein: a turbine generator is arranged in the first drill collar; the device comprises a first drill collar, a second drill collar, a turbine generator, an electronic framework, a pulse generator, a first flow passage switching joint, a second flow passage switching joint, a first line passing passage, a second line passing passage and a containing cavity, wherein the first flow passage switching joint is arranged between the turbine generator and the second drill collar, the second flow passage switching joint is arranged between the second drill collar and the pulse generator, the first line passing passage, the second line passing passage and the containing cavity are communicated through line passing holes formed in the second drill collar wall, and the turbine generator, the electronic framework and the pulse generator are sequentially and electrically connected through cables contained in the first line passing passage, the second line passing passage and the line passing holes.
In an exemplary embodiment, the bidirectional communication sub comprises: the end parts of the first drill collar, the second drill collar and the third drill collar are sequentially connected, wherein: a turbine generator is arranged in the first drill collar; the device comprises a first drill collar, a second drill collar, a turbine generator, an electronic framework, a pulse generator, a first flow passage switching joint, a second flow passage switching joint, a first line passing passage, a second line passing passage and a containing cavity, wherein the first flow passage switching joint is arranged between the turbine generator and the second drill collar, the second flow passage switching joint is arranged between the second drill collar and the pulse generator, the first line passing passage, the second line passing passage and the containing cavity are communicated through line passing holes formed in the second drill collar wall, and the turbine generator, the electronic framework and the pulse generator are sequentially and electrically connected through cables contained in the first line passing passage, the second line passing passage and the line passing holes.
Fig. 1 is a structural diagram of a bidirectional communication short section provided in an embodiment of the present invention.
As shown in fig. 1, from top to bottom, the bidirectional communication sub is sequentially provided with a first drill collar 100, a second drill collar 200 and a third drill collar 300, both ends of the first drill collar 100 and the third drill collar 300 are female joints, both ends of the second drill collar 200 are male joints, and the first drill collar 100, the second drill collar 200 and the third drill collar 300 are sequentially in threaded connection. A turbine generator 400 is arranged in the first drill collar 100, the end part of the turbine generator 400 is connected with the upper end of a first flow passage conversion joint 700, the lower end of the first flow passage conversion joint 700 is connected with the upper end of a second drill collar 200 in the first drill collar 100, a first wire passing channel 710 is arranged on the first flow passage conversion joint 700, and the first wire passing channel 710 is communicated with the upper end face of the first flow passage conversion joint 700. The second drill collar 200 is provided with a housing chamber 210 on the collar wall, the housing chamber 210 is used for housing the electronic skeleton 500, and the second drill collar 200 is further provided with a wire passing hole 290, wherein the wire passing hole at the upper end of the housing chamber 210 is a first wire passing hole 220, and the first wire passing hole 220 is communicated with the first wire passing channel 710. The second wire passing hole 230 is located at the lower end of the accommodating cavity 210, and the second wire passing hole 230 is communicated with the second wire passing channel 810 of the second flow channel adapter 800. The upper end of the second flow passage adapter 800 is connected with the lower end of the second drill collar 200, the lower end of the second flow passage adapter 800 is connected with the upper end of the pulse generator 600, and the pulse generator 600 is arranged in the third drill collar 300. The second wire passing channel 810 is communicated with the lower end face of the second flow channel adapter 800, so that a cable for supplying power to the pulse generator 600 by the turbine generator 400 can be electrically connected with the electronic framework 500 through the first wire passing channel 710, and then is connected to the pulse generator 600 through the second wire passing channel 810, so that the turbine generator 400 supplies power to the pulse generator 600. Through the structural design of passing wire channel in the bidirectional communication nipple joint, turbine generator 400 and impulse generator 600 can be arranged in the same nipple joint, and then the cable length of turbine generator 400 for impulse generator 600 power supply is reduced, and the line loss generated when turbine generator 400 supplies power for impulse generator 600 is reduced.
The technical solution of the present invention will be described in detail by the following specific examples.
FIG. 2 is a close-up view of a first drill collar location provided by an embodiment of the present invention.
As shown in FIG. 2, the first drill collar 100 has dual female joint configurations at both ends. A turbine generator 400 is arranged in the first drill collar 100, the turbine generator 400 is suspended in the first drill collar 100 through a fourth flow passage adapter 1000 arranged at the upper end of the first drill collar 100, and the lower end of the turbine generator 400 is hermetically connected with the first flow passage adapter 700. The turbine generator 400 includes a turbine generator body 410, a stator 420 provided on the turbine generator body 410, and a casing 430 provided outside the stator, and a generator outer cylinder 440 sealingly connected to a lower end of the turbine generator body 410. Bus steel tubes 450 are arranged in the turbine generator body 410 and the generator outer cylinder 440, the bus steel tubes 450 form a bus channel, and the bus channel accommodates a communication cable between short sections and a power supply cable for supplying power to the pulse generator by the turbine generator. A vortex slurry channel 470 is formed between the turbine generator body 410 and the housing 430. The turbine generator 400 is a turbine 411 that changes the flow direction of the fluid by means of a stator 420, so that the fluid directly impacts a turbine generator body 410. Converting the energy of the fluid into mechanical energy. Turbine 411 and turbine generator body 410 external magnet 412 are fixed and coupled to the rotor inside turbine generator 400 by body internal magnet 413. I.e. turbine 411 and the internal rotor of turbogenerator 400 rotate at the same angular speed. It should be noted that the same angular velocity rotation can allow for phase difference and lost rotation. The magnetic force variation of the inner rotor and the winding generates electric energy. The fourth flow channel switching connector 1000 includes a fourth switching connector body 1200, and a seventh connecting portion 1300 and an eighth connecting portion 1400 disposed at two ends of the fourth switching connector body 1200, wherein the seventh connecting portion 1300 is located at an upper end of the fourth switching connector body 1200 and is connected to the adapter 2000. The housing 430 is connected to the fourth adapter body 1200, the eighth connection portion 1400 is connected to the upper end of the turbine generator body 410, and the fourth flow channel adapter 1000 is provided with a fourth wire passage 1100 penetrating the end faces of the seventh connection portion 1300 and the eighth connection portion 1400. The fourth wire passage 1100 communicates with the bus passage formed by the bus steel pipe 450. The inlet 1100 of the fourth wire passing channel and the outlet of the fourth wire passing channel 1100 may be provided with connectors respectively connected to the adapter and the connectors on the turbine generator. A fourth mud channel 1500 is provided on the fourth crossover joint body 1200, and the fourth mud channel 1500 is in communication with the swirling mud channel 470. The fourth flow passage adapter 1000 is secured within the first drill collar 100 by a locking mechanism 1600. The locking mechanism 1600 is disposed at an end of the fourth flow channel adapter 1000 away from the turbine generator 400, the locking mechanism 1600 is connected to the fourth adapter body 1200 through a screw, and the fourth flow channel adapter 1000 is clamped in the first drill collar 100 through the locking mechanism 1600. The locking mechanism 1600 comprises a locking ring 1620, a locking plate 1630, a locking pressing plate 1610 and a locking screw 1640, wherein the locking ring 1620 is sleeved on the outer side of the locking plate 1630, a locking gap is formed between the locking ring 1620 and the locking plate 1630, the locking pressing plate 1610 is arranged on one side of the locking ring 1620 away from the fourth runner adapter 1000, and a pressing plate screw hole is arranged on the locking pressing plate 1610. The clamp plate screw is a plurality of, sets up along the circumference of locking clamp plate. The locking screw 1640 passes through the pressure plate screw hole and the locking gap to be in threaded connection with the fourth flow channel adapter 1000, and the locking ring 1620 expands and is clamped in the first drill collar 100 under the action of the locking pressure plate 1610, the locking screw 1640 and the locking plate 1630. Locking plate 1630 and locking pressure plate 1610 are provided with slurry holes for slurry to flow through. The upper end of the locking mechanism 1600 can also be provided with a nut spacer 1700 to prevent the screw from being difficult to disassemble after the end of the screw is worn. A fourth seal ring 1800 can be arranged on the outer wall of the fourth adapter body 1200, and the fourth adapter body 1200 is hermetically connected with the first drill collar 100 through the fourth seal ring 1800. The turbine generator is suspended in the first drill collar through the fourth runner adapter, so that the turbine generator is convenient to assemble, disassemble and maintain.
Fig. 3 is a cross-sectional view of the fourth flow switching fitting of fig. 2 at position D-D.
As shown in FIG. 3, the fourth mud channel 1500 is formed by three fourth vias through the fourth adapter body 1200 along the axis of the first drill collar 100, the fourth vias being evenly distributed about the axis of the fourth adapter body 1200. The fourth through hole is an arc-shaped hole. A fourth wire passing hole is formed in the center of the fourth adapter body 1200, the fourth wire passing hole forms a fourth wire passing channel 1100, and the fourth wire passing hole penetrates through the end faces of the seventh connecting portion 1300 and the eighth connecting portion 1400.
As shown in fig. 2, the generator outer cylinder 440 of the turbine generator 400 is connected to a first flow passage switching joint 700 provided at the lower end of the first drill collar 100. The first channel adapter 700 is provided with a first wire passage 710, and the first wire passage 710 is communicated with the bus channel formed by the bus steel tube 450. Specifically, the first flow channel switching joint 700 includes a first switching joint body 720, and a first connection portion 730 and a second connection portion 740 disposed at both ends of the first switching joint body 720. The first connection portion 730 is located at the upper end of the first conversion connector body 720 and is in threaded connection with the generator outer cylinder 440. The second connection portion 740 is located at the lower end of the first conversion joint body 720, and is sleeved with the end portion of the second drill collar 200 located in the first drill collar 100, and then fixed by the first bolt 770, and the upper end of the second drill collar 200 abuts against the first conversion joint body 720. The inlet of the first wire passing channel 710 is located on the end surface of the first connection portion 730, and the outlet of the first wire passing channel 710 is located on the end surface of the first conversion connector body 720 provided with the second connection portion 740. The bus in the bus steel pipe 450 of the turbine generator 400 can be led out to the second drill collar 200 through the first wiring channel 710. A first mud channel 750 is also disposed on the first flow passage adapter 700, an inlet of the first mud channel 750 is located on an end face of the first flow passage adapter 700 at the end where the first connection 730 is disposed, and an outlet of the first mud channel 750 is located on an end face of the second connection 740 and communicates with a central mud channel 270 formed in the center of the second drill collar 200, so that mud can be injected into the second drill collar 200 through the first drill collar 100. A first sealing ring 760 may be disposed on an outer wall of the first conversion joint body 720, and the first conversion joint body 720 and the first drill collar 100 are hermetically connected through the first sealing ring 760.
Fig. 4 is a cross-sectional view of the first flow channel transition joint of fig. 2 at a location C-C.
As shown in fig. 4, the first slurry flow path 750 is formed by a first through hole of the first conversion joint body 720 penetrating therethrough, and the first through hole is a nearly circular hole. The first through hole is provided with a first wire passing channel 710 at a position corresponding to the inward recess position.
FIG. 5 is an enlarged view of a second drill collar position in accordance with an embodiment of the present invention.
As shown in FIG. 5, the second drill collar 200 has a dual male joint configuration at both ends. The second drill collar 200 is threadedly connected to the first drill collar 100 and the second drill collar 200. The second drill collar 200 has a collar wall provided with a housing chamber 210 for housing the electronic chassis 500 and the controller on the electronic chassis 500. Specifically, the second drill collar 200 includes a second drill collar body 240 and a drill collar sleeve 250 sleeved on the second drill collar body 240, a groove is disposed on an outer wall of the second drill collar body 240, the drill collar sleeve 250 covers the groove, and a receiving chamber 210 is formed between the drill collar sleeve 250 and the groove. The groove is an annular groove disposed along the outer wall of the second collar body 240. When the second drill collar 200 is assembled on the first drill collar 100, the upper end of the drill collar sleeve 250 abuts against the end of the first drill collar 100, and the lower end of the drill collar sleeve 250 abuts against the step formed on the second drill collar body 240, so that the drill collar sleeve 250 can be prevented from sliding on the second drill collar body 240. The fifth sealing rings 280 are disposed at two ends of the groove of the second drill collar body 240 to prevent mud and the like from entering the accommodating cavity 210. The upper end of the accommodating cavity 210 is communicated with the first wire passage 710 through the first wire passing hole 220. The upper port of the first wire passing hole 220 is located on the end surface of the second drill collar 200 located in the first drill collar 100, and is opposite to the outlet of the first wire passing channel 710. The lower port of the first wire passing hole 220 is located at the bottom of the groove. The lower end of the receiving chamber 210 is communicated with the second wire passage 810 of the second flow passage switching joint 800 through the second wire passing hole 230. The upper port of the second wire passing hole 230 is located at the bottom of the groove, and the lower port of the first wire passing hole 220 is located on the end surface of the second drill collar 200 in the first drill collar 100 and opposite to the inlet of the second wire passing channel 810. The second drill collar body 240 is provided with a central mud channel 270 along the axial direction of the second drill collar 200, the upper end of the central mud channel 270 is communicated with the first mud channel 750, and the lower end of the central mud channel 270 is communicated with the second mud channel 850 of the second flow passage adapter 800. The electronic bobbin 500 is disposed in the receiving cavity 210. The electronic skeleton 500 includes controllers that implement particular functions. The controller at least comprises a rectifying and voltage-stabilizing module electrically connected with the turbine generator and used for supplying power to the system, and a driving module electrically connected with the pulse generator. Of course, a communication module communicating with the upper and lower nipples may be included.
FIG. 6 is an enlarged view of a portion of a third drill collar according to an embodiment of the present invention.
The third drill collar 300 is similar to the first drill collar 100, and both ends of the third drill collar 300 are also of a double female joint structure. A pulse generator 600 is arranged in the third drill collar 300, and a pulse mud channel 320 is formed between the pulse generator 600 and the third drill collar 300. The pulser 600 is suspended in the third drill collar 300 by the second flow passage adapter 800. The second flow channel adapter 800 is provided with a second wire passage 810, and an inlet of the second wire passage 810 passes through the second wire hole 230 and the accommodating cavity 210. Specifically, the second flow passage switching joint 800 includes a second switching joint body 820, and third and fourth connection parts 830 and 840 provided at both ends of the second switching joint body 820. The third connecting portion 830 is located at the upper end of the second adapter body 820, and is sleeved with the end of the second drill collar 200 located at the third drill collar 300 and then fixed by a second bolt 860. The fourth connecting portion 840 is located at the lower end of the second adapter body 820 and is connected with the end of the pulse generator 600 in a sealing manner. The inlet of the second wire passage 810 is located at the end of the second adapter body 820 where the third connecting part 830 is located, and corresponds to the second wire hole 230. The outlet of the second wire passing channel 810 is located at the end surface of the fourth connecting portion 840. The electrical supply lines of the turbine generator 400 that supply the pulse generator 600 can be led out to the pulse generator 600 via the second line passage hole 230 and the second line passage 810. The second flow passage conversion joint 800 provides a second mud passage 850. The inlet of the second mud channel 850 is located on the end face of the third connection 830. The outlet of the second mud channel 850 is located at the end of the second flow passage switching joint 800 where the fourth connection 840 is located. Further, the fourth connecting portion 840 is connected to the pulse generator 600 through the switching sleeve 870.
Fig. 7 is a cross-sectional view of the second flow path transition joint of fig. 6 at position E-E.
As shown in fig. 7, the second slurry channel 850 is formed by a second through hole of the second adapter body 820, which is a nearly circular hole. The second through hole is provided with a second wire passing channel 810 corresponding to the inward concave position.
When slurry enters from the upper end of the first drill collar, the slurry is transferred into the turbine slurry sending channel through the fourth flow channel adapter, the slurry flows to the turbine position under the guide of the guide wheel, the slurry drives the turbine to rotate, the rotor of the turbine generator body is driven to cut the magnetic induction line through the magnetic force effect to generate electric power, the electric power is sent to the voltage stabilizing and rectifying module of the controller through the bus steel pipe and the bus in the first wire passing channel, and the voltage stabilizing and rectifying module supplies power to the pulse generator through the power supply cable penetrating through the second wire passing channel. That is to say, the embodiment of the invention provides a bidirectional communication short section, and the pulse generator and the turbine generator are integrated into the same short section through the internal threading structural design of the bidirectional communication short section, so that the length of a cable for supplying power to the pulse generator by the turbine generator can be reduced, and the line loss generated when the pulse generator is supplied with power by the turbine generator is further reduced. Meanwhile, the wire passing structure of the bidirectional communication nipple provided by the embodiment of the invention is simple, and can provide reference for the structural design of the inter-short-joint wire passing channel in the industry, thereby improving the standardization of the logging-while-drilling instrument in the industry. In addition, the turbine generator, the pulse generator, the first flow passage conversion joint, the second flow passage conversion joint and other structures are hung in the drill collar, so that the bidirectional communication pup joint can be conveniently disassembled, assembled and maintained.
Further, as shown in fig. 6, a collar wall wire passage 310 is disposed on the collar wall of the third drill collar 300, and the collar wall wire passage 310 can communicate with the accommodating chamber 210. One end, far away from the second drill collar 200, of the third drill collar 300 is connected with a double-revolution change-over joint 3000, a third flow channel change-over joint 900 is arranged in the end part, connected with the double-revolution change-over joint 3000, of the third drill collar 300, the third flow channel change-over joint 900 is connected with a connecting piece 3100 in the double-revolution change-over joint 300, and the third flow channel change-over joint 900 is provided with a fourth wire passing channel 910 communicated with the collar wall wire passing channel 310. Specifically, the inlet of the collar wall threading channel 310 is communicated with the third threading hole 260, and the outlet of the collar wall threading channel 310 is communicated with the third threading channel 910 arranged on the third flow channel adapter 900 positioned at the inner side of the lower end of the third drill collar 300. The collar wall threading passage 310 includes two first 311 and second 312 parallel passages that are parallel to the axis of the third drill collar 300, and a radial passage 313 that communicates with the first 311 and second 312 parallel passages. The upper port of the first parallel passage 311 is the inlet of the line-passing passage 310, and is disposed on the end surface of the third drill collar 300, which is located on the outer side of the second drill collar 200. The lower port of the second parallel passage 312 is the outlet of the collar wall threading passage 310 and is disposed on the end face of the positioning step 330 in the third drill collar 300. A radial passage 313 extends through the outer wall of the third collar 300, and a plug is disposed in the opening of the radial passage 313 in the outer wall of the third collar 300. The third flow channel switching joint 900 includes a third switching joint body 920 and fifth and sixth connection parts 930 and 940 disposed at both ends of the third switching joint body 920. The fifth connecting portion 930 is disposed at the upper end of the third adapter body 920 and is sleeved in the positioning step 330 formed by the third drill collar 300. The sixth connecting portion 940 is located at the lower end of the third adaptor body 920 and is connected to the connecting member 3100 in the double male adaptor 3000. The third flow channel adapter 900 is provided with a third line passing channel 910, and an inlet of the third line passing channel 910 is located on an end surface of the third adapter body 920 provided with a fifth connecting part 930 and is communicated with a lower port of the second parallel channel 312. The outlet of the third wire passage 910 is located on the end surface of the sixth connection part 940. The third flow channel adapter 900 is provided with a third mud channel 950, and the third mud channel 950 is communicated with the pulse mud channel 320 and a mud channel formed between the collar wall of the double male adapter 3000 and the connecting member 3100. The inlet of the third mud channel 950 is provided on the end face of the fifth connecting portion 930, communicating with the pulse mud channel 320. An outlet of the third slurry channel 950 is arranged on the end face of the third adapter body 920, which is provided with the sixth connecting part 940, and a slurry channel is formed between the collar wall of the double male adapter 3000 and the connecting part 3100.
FIG. 8 is a cross-sectional view of the third flow channel transition joint of FIG. 6 at a position F-F.
As shown in fig. 8, a through hole 960 for a screw rod to pass through is formed in the third adapter body 920 and penetrates through the third adapter body 920 in the axial direction of the third drill collar 300, and the third adapter body 920 is fixed on the end surface of the positioning step 330 by the screw rod.
According to the embodiment of the invention, the power supply cable for the turbine generator to supply power to the pulse generator and the communication cable for communicating with the next short section can be separated through the collar wall wire passing channel, so that the interference of large current carried by the power supply cable for supplying power to the pulse generator on the communication between the short sections is avoided, and the stability of the communication between the short sections is improved.
It should be noted that, in the embodiments of the present invention, references to "the outlet and the inlet" in the outlet of the first wire passing channel, the inlet of the first wire passing channel, the outlet of the second wire passing channel, the inlet of the second wire passing channel, the outlet of the third wire passing channel, the inlet of the third wire passing channel, the outlet of the fourth wire passing channel, the inlet of the fourth wire passing channel, and the like are only used for describing a relative position, and the outlet may also be the inlet, which does not limit the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures referred to have specific orientations, are configured and operated in specific orientations, and thus, are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (12)
1. A bidirectional communication nipple for logging while drilling, comprising: first drill collar, second drill collar and the third drill collar that connects gradually, wherein: a turbine generator is arranged in the first drill collar; the device comprises a first drill collar, a second drill collar, a turbine generator, an electronic framework, a pulse generator, a first flow passage switching joint, a second flow passage switching joint, a first flow passage, a second flow passage switching joint and a second flow passage switching joint, wherein the first flow passage switching joint is arranged between the turbine generator and the second drill collar, the second flow passage switching joint is arranged between the second drill collar and the pulse generator, the first flow passage switching joint, the second flow passage switching joint and the holding cavity are communicated through a line passing hole formed in the second drill collar, and the turbine generator, the electronic framework and the pulse generator are sequentially and electrically connected through cables which are held in the first flow passage switching passage, the second flow passage switching joint and.
2. The bidirectional communication sub of claim 1, characterized in that: the connection end of the second drill collar and the first drill collar and the connection end of the second drill collar are arranged to be a male connector, and the wire passing hole is communicated with the end face of the second drill collar.
3. The bidirectional communication sub of claim 2, characterized in that: the second drill collar comprises a second drill collar body and a drill collar sleeve sleeved on the second drill collar body, a groove is formed in the outer wall of the second drill collar body, and an accommodating cavity is formed between the drill collar sleeve and the groove.
4. The bidirectional communication sub of claim 2, characterized in that: the first flow channel conversion joint comprises a first conversion joint body, a first connecting portion and a second connecting portion, the first connecting portion is located at one end of the first conversion joint body, the second connecting portion is located at the other end of the first conversion joint body, the first connecting portion is connected with the turbine generator, the second connecting portion is connected with the end portion of the second drill collar, the inlet of the first wire passing channel is located on the end face of the first connecting portion, and the outlet of the first wire passing channel is located on the end face, provided with the second connecting portion, of the first conversion joint body.
5. The bidirectional communication sub of claim 2, characterized in that: the second flow passage adapter comprises a second adapter body, a third connecting part and a fourth connecting part, the third connecting part is located at one end of the second adapter body, the fourth connecting part is located at the other end of the second adapter body, the third connecting part is connected with the end of the second drill collar, the fourth connecting part is connected with the end of the second drill collar, the inlet of the second wire passing channel is located on the end face, provided with the third connecting part, of the second adapter body, and the outlet of the second wire passing channel is located on the end face of the fourth connecting part.
6. The bidirectional communication sub of claim 1, characterized in that: a collar wall wire passing channel is arranged on the collar wall of the third drill collar and is communicated with the accommodating cavity through a third wire passing hole arranged on the second drill collar.
7. The bidirectional communication sub of claim 6, wherein: one end, far away from the second drill collar, of the third drill collar is connected with a double-male adapter, a third flow channel adapter is arranged in the end part, connected with the double-male adapter, of the third drill collar and connected with a connecting piece in the double-male adapter, and a fourth wire passing channel communicated with the wire passing channel on the collar wall is arranged in the third flow channel adapter.
8. The bidirectional communication sub of claim 1, characterized in that: a fourth runner adapter is arranged in the first drill collar and connected with one end, far away from the second drill collar, of the turbine generator.
9. The bidirectional communication sub of claim 8, wherein: the inner wall of the first drill collar is provided with a fixed step, and the fourth flow passage adapter is clamped on the fixed step.
10. The bidirectional communication sub of claim 9, wherein: and a locking mechanism is arranged at one end of the fourth flow channel adapter joint far away from the turbine generator, and the fourth flow channel adapter joint is clamped in the first drill collar through the locking mechanism.
11. The bidirectional communication sub of claim 10, wherein: the locking mechanism comprises a locking ring, a locking plate, a locking pressing plate and a locking screw, the locking ring is sleeved on the outer side of the locking plate, a locking gap is formed between the locking ring and the locking plate, the locking pressing plate is arranged on one side, away from the fourth runner adapter, of the locking ring, a pressing plate screw hole is formed in the locking pressing plate, the locking screw penetrates through the pressing plate screw hole and the locking gap to be in threaded connection with the fourth runner adapter, and the locking ring is expanded and clamped in the first drill collar under the action of the locking pressing plate, the locking screw and the locking plate.
12. The bidirectional communication sub of claim 1, characterized in that: the electronic framework is provided with a controller, and the controller at least comprises a rectification voltage-stabilizing module which is electrically connected with the turbine generator and used for supplying power to the system, and a driving module which is electrically connected with the pulse generator.
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| CN201911234793.2A CN111058835B (en) | 2019-12-05 | 2019-12-05 | Bidirectional communication short section |
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| CN112096372A (en) * | 2020-11-11 | 2020-12-18 | 东营千禧龙科工贸有限公司 | Power generation control device of wireless measurement while drilling instrument |
| CN112483010A (en) * | 2020-11-18 | 2021-03-12 | 中国海洋石油集团有限公司 | Downhole tool |
| CN112593929A (en) * | 2020-12-16 | 2021-04-02 | 成都多贝石油工程技术有限公司 | Motor type mud pulse generator |
| CN112943097A (en) * | 2021-04-16 | 2021-06-11 | 万晓跃 | High-flexibility shaft bottom self-powered while-drilling system |
| CN116723428A (en) * | 2023-08-09 | 2023-09-08 | 德州联合石油科技股份有限公司 | Near-bit guiding system and screw drilling tool |
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| CN112593929A (en) * | 2020-12-16 | 2021-04-02 | 成都多贝石油工程技术有限公司 | Motor type mud pulse generator |
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