CN110847821B - High-deflecting and high-drilling-speed rotary guide system - Google Patents
High-deflecting and high-drilling-speed rotary guide system Download PDFInfo
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- CN110847821B CN110847821B CN201911020564.0A CN201911020564A CN110847821B CN 110847821 B CN110847821 B CN 110847821B CN 201911020564 A CN201911020564 A CN 201911020564A CN 110847821 B CN110847821 B CN 110847821B
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- 238000005553 drilling Methods 0.000 claims abstract description 103
- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 239000003381 stabilizer Substances 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims description 62
- 230000005674 electromagnetic induction Effects 0.000 claims description 9
- 230000035515 penetration Effects 0.000 claims 3
- 238000010248 power generation Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002310 elbow joint Anatomy 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock
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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
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/064—Deflecting the direction of boreholes specially adapted drill bits therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a directional drilling technology in the field of oil and gas resources, in particular to a high-deflection and high-drilling-speed rotary steering system. The condition that two guiding forms work together can be adapted; the drilling efficiency is improved, and the condition of one-trip drilling and completion is met on the premise of ensuring the well quality. The technical scheme adopted by the invention comprises a drill bit, a rotary guide head, a bottom stabilizer, MWD (measurement while drilling), LWD (logging while drilling) and an upper stabilizer; the drill bit, the rotary guide head, the bottom stabilizer, the MWD, the LWD and the upper stabilizer are sequentially connected, and the drilling tool further comprises an underground generator short joint, a wireless transmission system and an underground power drilling tool; the number of the wireless transmission systems is 2, the wireless transmission systems are respectively arranged at two ends of the underground power drilling tool, one wireless transmission system is connected with the MWD and the LWD, and the other wireless transmission system is connected with the rotary guide head through a short section of an underground generator and a bottom stabilizer.
Description
Technical Field
The invention relates to a directional drilling technology in the field of oil and gas resources, in particular to a high-deflection and high-drilling-speed rotary steering system.
Background
Directional well drilling, which is the process of controllably drilling a wellbore to achieve a desired well path, is generally used to describe the process of deviating a wellbore from vertical in a desired direction.
There are many reasons for orienting a well including avoiding a collision with another well, penetrating a predetermined geological target, intersecting another well for rescue operations or following a trajectory required for geosteering, among many other possible reasons.
The guide drilling tool assembly in the existing directional well drilling technology is generally divided into the following two structural forms:
1. the drilling bit, the rotary guide head, the bottom hole stabilizer, the flexible drilling tool, the MWD, the LWD, the upper stabilizer and the like are connected in series, and the rotation of the drilling bit is completed by connecting the drilling tool with the wellhead driving turntable.
2. The drill bit, the downhole motor, the bottom hole stabilizer, the MWD, the LWD, the upper stabilizer and the like are connected in series, and the rotation of the drill bit is completed by the driving of the downhole motor.
The first type of steerable drilling assembly described above is referred to as rotary steerable and the second type of steerable drilling assembly is referred to as slide steerable.
The existing directional drilling technology cannot realize rotary guide and sliding guide at the same time, a rotary guide head or an underground power device is driven by a single machine, and when the single machine is driven, the well hole quality and the drilling efficiency of directional drilling operation are not high, so that the requirement of one-time drilling and completion cannot be met.
Disclosure of Invention
The invention provides a high-drilling-speed rotary steering drilling tool system, which can adapt to the condition that two steering modes work together; the drilling efficiency is improved, and the condition of one-trip drilling and completion is met on the premise of ensuring the well quality.
In order to solve the problems in the prior art, the technical scheme of the invention is as follows: a high deflecting and high drilling speed rotary steering system comprises a drill bit, a rotary steering head, a bottom hole stabilizer, an MWD (measurement while drilling) stabilizer, an LWD (logging while drilling) stabilizer and an upper stabilizer; the drill bit, the rotary guide head, the bottom hole stabilizer, the MWD, the LWD and the upper stabilizer are sequentially connected, and the drilling tool is characterized in that:
the underground power drilling device also comprises an underground generator short section, a wireless transmission system and an underground power drilling tool; the number of the wireless transmission systems is 2, the wireless transmission systems are respectively arranged at two ends of the underground power drilling tool, one wireless transmission system is connected with MWD and LWD, and the other wireless transmission system is connected with the rotary guide head through a short section of an underground generator and a bottom stabilizer;
the well bottom stabilizer consists of a second connector, a pipe joint, a second electronic sleeve, a rectifying and transmitting device, a well bottom stabilizer body, a second sealing sleeve joint and a second sealing contact pin; a rectification transmission device is arranged in an inner cavity of the shaft bottom stabilizer body, a second electronic sleeve is arranged between the rectification transmission device and the inner wall of the shaft bottom stabilizer body, a pipe joint and a second sealing sleeve joint are respectively arranged at two ends of the second electronic sleeve, the pipe joint is connected with a second connector, and a second sealing contact pin is arranged in the second sealing sleeve joint and is in circuit connection with adjacent components; the rectification transmission device is connected with a short section of the underground generator through a second connector and is connected with the rotary guide head through a second sealing contact pin;
the underground generator short section consists of a generator short section sleeve, a guide wheel, a first-stage turbine, a stator shaft, an underground generator, a second-stage turbine, a rotor shaft, a third connector and a third sealing sleeve joint; the stator shaft penetrates through an inner cavity of a short section sleeve of the generator and is positioned through a third connector and a third sealing sleeve joint, a rotor shaft of the underground generator is arranged on the stator shaft through a bearing, a first-stage turbine and a second-stage turbine are arranged at two ends of the rotor shaft of the underground generator and are driven to rotate relative to the stator shaft under the drive of hydraulic power, and a guide wheel is arranged at the front end of the first-stage turbine and fixed on the stator shaft to play a role in guiding flow;
the wireless transmission system consists of a decoding short section shell, a sealing head, a connector I, a sealing contact pin I, a sealing sleeve connector I, a coil sheath, an electromagnetic induction coil, an electronic sleeve I, a decoding transmission device and a pipe joint; the electromagnetic induction coil is arranged at an outer circumferential groove of the decoding short section shell and is protected by a coil sheath, a first connector and a first electronic sleeve are arranged in an inner cavity of the decoding short section shell, the decoding transmission device is arranged in the first electronic sleeve, two ends of the decoding short section shell are packaged in the first electronic sleeve through a first sealing sleeve connector and a first pipe connector, a first sealing contact pin is arranged in the first sealing sleeve connector, the first sealing contact pin is respectively connected with the electromagnetic induction coil and the decoding transmission device, the first sealing sleeve connector is connected with the sealing connector through the first connector, and the pipe connector is connected with an adjacent part; the positions of the sealing head and the pipe joint may be interchanged.
The outer cylinder of the decoding short section shell is provided with a T-shaped through hole, the first connector is provided with a hole corresponding to the T-shaped through hole, and the hollow bolt extends into the T-shaped through hole of the decoding short section shell and the hole of the first connector to connect the T-shaped through hole and the hole of the first connector into a whole.
The rectification transmission device is in a multi-stage structure, and a plurality of rectification transmitters are connected in series into a whole through a connecting sleeve.
And the second electronic sleeve is arranged in the inner cavity of the well bottom stabilizer body through a supporting sleeve.
Compared with the prior art, the invention has the following advantages:
1. when the rotary guide head is used for directional operation, the drill speed and the torque of the drill bit are increased by the online driving of the rotary guide head and the underground power drilling tool; the deflecting capability of the drilling tool and the guiding accuracy thereof are improved; the well quality and the drilling efficiency of the directional drilling operation are improved, and particularly the steering control of a horizontal well meets the conditions of one-trip drilling and completion;
2. the wireless transmission system is added, and the information conduction between the underground power drilling tools is realized through the wireless transmission system;
3. the structure of the downhole stabilizer is improved, a rectification system of the downhole generator is added on the premise of not reducing downhole use conditions, the installation length of a short section of the generator in a small-diameter well is effectively shortened, and wired conduction of downhole power and signals is met;
4. the invention meets the driving configuration of the underground generator under different mud discharge capacities by the multi-stage combination of the guide wheel turbine group in the turbine driving system.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a block diagram of a wireless transmission system according to the present invention;
FIG. 3 is a schematic representation of a downhole stabilizer structure of the present invention;
FIG. 4 is a short section of a downhole generator of the present invention;
1-drill bit, 2-rotary guide head, 3-downhole stabilizer, 4-downhole generator sub, 5-wireless transmission system, 6-downhole power drill, 7-MWD and LWD, 8-upper stabilizer, 9-decoding sub housing, 10-sealing head, 11-connector, 12-hollow bolt, 13-sealing pin I, 14-sealing sleeve connector I, 15-coil sheath, 16-magnetic induction coil, 17-electronic sleeve, 18-decoding transmission device, 19-pipe connector, 20-connector II, 21-pipe connector, 22-electronic sleeve II, 23-rectifying transmission device, 24-connecting sleeve, 25-downhole stabilizer body, 26-supporting sleeve, 27-sealing sleeve connector II, 28-sealing contact pin II, 29-generator short section sleeve, 30-guide wheel, 31-first-stage turbine, 32-stator shaft, 33-downhole generator, 34-second-stage turbine, 35-rotor shaft, 36-connector III and 37-sealing gland connector III.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A high deflecting and high drilling speed rotary steering system is shown in figure 1 and comprises a drill bit 1, a rotary steering head 2, a bottom hole stabilizer 3, a downhole generator short joint 4, a wireless transmission system 5, a downhole power drilling tool 6, MWD (measurement while drilling) and LWD (logging while drilling) 7 and an upper stabilizer 8; the number of the wireless transmission systems 5 is 2, and the drill bit 1, the rotary guide head 2, the well bottom stabilizer 3, the underground generator short section 4, the wireless transmission system 5, the underground power drilling tool 6, the wireless transmission system 5, the MWD and LWD7 and the upper stabilizer 8 are sequentially connected and are connected with wellhead equipment through the drilling tool;
the wireless transmission system consists of two sets of same devices which are respectively arranged at two ends of the underground power drilling tool, and the positions of the sealing head 10 and the pipe joint 19 are exchanged according to the installation positions; to meet the power supply requirements.
The well bottom stabilizer 3 consists of a second connector 20, a pipe joint 21, a second electronic sleeve 22, a rectifying and transmitting device 23, a connecting sleeve 24, a well bottom stabilizer body 25, a supporting sleeve 26, a second sealing sleeve joint 27 and a second sealing inserting pin 28; the inner cavity of the shaft bottom stabilizer body 25 is provided with a rectifying transmission device 23, the rectifying transmission device 22 is multistage, a plurality of rectifying transmission devices are connected in series into a whole through a connecting sleeve 24, an electronic sleeve II 22 is arranged between the rectifying transmission device 23 and the inner wall of the shaft bottom stabilizer body 25, the electronic sleeve II 22 is arranged in the inner cavity of the shaft bottom stabilizer body 25 through a supporting sleeve 26, two ends of the electronic sleeve II 22 are respectively provided with a pipe joint 21 and a sealing sleeve joint II 27, the pipe joint 21 is connected with a connector II 20, and a sealing contact pin II 28 is arranged in the sealing sleeve joint II 27 and is connected with a circuit of an adjacent component; the rectification transmission device 23 is connected with a downhole generator 33 of the downhole generator short section 4 through a second connector 20 and is connected with the rotary guide head 2 through a second sealing contact pin 28; after rectification, the power is respectively supplied to the rotary guiding head 2 and the wireless transmission system 5, as shown in fig. 3;
and two ends of the shaft bottom stabilizer are respectively connected with the rotary guide head and the short section of the underground generator through threads.
The underground generator nipple 4 consists of a generator nipple sleeve 29, a guide wheel 30, a first-stage turbine 31, a stator shaft 32, an underground generator 33, a second-stage turbine 34, a rotor shaft 35, a third connector 36 and a third sealing sleeve joint 37; the stator shaft 32 is arranged in an inner cavity of the generator short section sleeve 29 in a penetrating mode and is positioned through a connector III 36 and a sealing sleeve joint III 37, a rotor shaft 35 of the downhole generator 33 is arranged on the stator shaft 32 through a bearing, a first-stage turbine 31 and a second-stage turbine 34 are arranged at two ends of the rotor shaft 35 of the downhole generator 33 and are driven to rotate relative to the stator shaft 32 under the driving of hydraulic power, a guide wheel 30 is arranged at the front end of the first-stage turbine and fixed on the stator shaft 32 to play a role in guiding flow, a turbine group of the guide wheel drives the rotor shaft 35 of the downhole generator 33 to rotate under the driving of the hydraulic power, and therefore electric energy is generated between the guide wheel and the stator shaft 32, and the downhole generator 33 is connected with a rectifying and transmitting device 23 and;
the guide wheel and the turbine in the turbine driving system are combined in multiple stages and can be selectively installed according to the mud discharge capacity.
The underground generator short section is connected with the adjacent drilling tool through threads, a sliding sleeve and a plug assembly.
The wireless transmission system 5 comprises a decoding short section shell 9, a sealing head 10, a connector I11, a conduit 12, a sealing pin I13, a sealing sleeve connector I14, a coil sheath 15, an electromagnetic induction coil 16, an electronic sleeve I17, a decoding transmission device 18, a pipe connector 19 and the like; the electromagnetic induction coil 16 is arranged at an outer circumferential groove of the decoding short section shell 9 and is protected by a coil sheath 15, a connector I11 and an electronic sleeve I17 are arranged in an inner cavity of the decoding short section shell 9, the decoding transmission device 18 is arranged in the electronic sleeve I17, two ends of the decoding short section shell are packaged in the electronic sleeve I17 through a sealing sleeve connector I14 and a pipe connector 19, a sealing contact pin I13 is arranged in the sealing sleeve connector I14, the sealing contact pin 13 is respectively connected with the electromagnetic induction coil 16 and the decoding transmission device, the sealing sleeve connector I14 is connected with the sealing connector 10 through the connector I11, and the pipe connector 19 is connected with an adjacent part; the positions of the sealing head 10 and the pipe joint 19 can be interchanged, a T-shaped through hole is formed in the outer cylinder of the decoding short section shell 9, a hole corresponding to the T-shaped through hole is formed in the connector I11, the hollow bolt 12 extends into the T-shaped through hole of the decoding short section shell 9 and the hole of the connector I11 to connect the decoding short section shell and the connector I into a whole, and a sealing insertion pin I13 is arranged on the sealing sleeve pipe joint I14 as shown in figure 1.
The underground power drilling tool is a screw drilling tool or a turbine drilling tool, the drilling tool is driven by slurry to rotate, and the guiding is preset by adopting an outer pipe elbow joint wellhead.
The rotation of the rotary guide head 2 is driven by wellhead equipment and a downhole power drilling tool, the guide adopts a hydraulic wing pushing system which is uniformly distributed on the circumference of a non-rotating sleeve, the force system of a wing rib group controlled by hydraulic force is changed to generate, and the hydraulic source of the rotary guide head is composed of a downhole generator driven by mud, a hydraulic system and a wing rib, which is called the hydraulic wing pushing system for short.
The working condition of the invention can be driven by the rotary guide head and the underground power drilling tool on line or driven by the rotary guide head or the underground power drilling tool alone when in orientation.
The invention discloses a high-deflecting and high-drilling-speed rotary guide system which is installed in two stages, namely:
1. the first-level installation comprises: the device comprises a drill bit, a rotary guide head, a bottom hole stabilizer, a short section of a downhole generator and a wireless transmission device, wherein the drill bit, the rotary guide head, the bottom hole stabilizer, the short section of the downhole generator and the wireless transmission device are connected through threads, a sliding sleeve and a plug-in assembly (comprising power and information);
2. the secondary installation comprises: the underground power drilling tool is connected with the upper stabilizer through threads, a sliding sleeve and a plug assembly, wherein the upper part and the lower part of the underground power drilling tool are only in threaded connection, and information transmission is provided at the two ends of the underground power drilling tool through the wireless transmission device;
3. the two stages of the drilling tool are connected to form a hybrid rotary steering drilling tool combination with a double-power mechanism.
The high-deflecting and high-drilling-speed rotary guide system has the following two functions:
1. a drilling mode of the mud driven drilling tool; (sliding drill)
The drilling mode of the mud driven drilling tool is sliding guide drilling. The mud-driven underground power drilling tool drives the drill bit to rotate through a shaft bottom stabilizer and a main shaft of a rotary guide head, the shell of the mud-driven underground power drilling tool is guided according to a bend angle preset by a bent connector, and a hydraulic wing pushing system of the rotary guide head at the lower part of the mud-driven underground power drilling tool plays roles in stabilizing and increasing inclination;
when the drilling mode of the mud-driven drilling tool works, the randomly measured well deviation and the orientation thereof are uploaded to the ground through MWD, and a driller adjusts the tool face angle of the underground power drilling tool according to the uploaded data to control the target orientation thereof;
when the drilling mode of the mud-driven drilling tool works, a hydraulic wing pushing system of the rotary guide head enters an inclination increasing working condition, the well inclination is completed by two sets of drilling tools, and meanwhile, a driller randomly eliminates the azimuth error according to the uploaded data;
when the drilling mode of the mud-driven drilling tool works, the drilling tool is accurately positioned (slides), the drilling efficiency is high (underground power), and meanwhile, the hydraulic push wing system on the rotary guide head can play the roles of stabilizing and increasing the inclination of the well bottom, so that the well bore quality is improved.
2. The wellhead drives the drilling mode of the drilling tool. (Rotary drilling)
The drilling mode of the drilling tool driven by the wellhead equipment, namely rotary steering drilling, the drilling tool driven by the wellhead equipment drives the drill bit to rotate through the underground power drilling tool, the bottom stabilizer and the rotary steering head main shaft, and rotary steering is carried out on the basis of sliding drilling on a well section, so that the effect of increasing inclination of a well hole is continuously played;
at the moment, the outer bent pipe of the underground power drilling tool is separated from the well wall, and the rotating speed of the outer bent pipe is superposed with the rotating speed of the well platform equipment driving drilling tool, so that the drilling speed and the torque of the outer bent pipe are increased.
The two drilling modes can be respectively used according to the change of underground geological conditions:
implementation of two drilling modes, comprising the steps of:
1. and serially connecting drilling tools according to the requirements of the drilling tool assembly, adjusting the guiding bend angle and the direction of the underground power drilling tool according to the outer diameter of the push wings of the rotary guiding head, and sliding to the bottom of the well.
2. And starting slurry circulation, randomly measuring the well deviation and the direction of the well, adjusting the tool face angle of the underground power drilling tool according to the MWD uploading signal, and then drilling the well to the specified depth in a sliding mode.
3. In the process of sliding drilling, the mud drives the underground generator to work simultaneously, and the electric power drives the hydraulic push wing system to work, so that the effects of stabilizing and increasing the inclination are achieved, and the quality of a well hole is improved.
4. And opening wellhead equipment to drive the drilling tool to rotate, and adjusting the working hole diameter of the hydraulic wing pushing system to ensure that the guiding bend angle of the underground power system fails. At the moment, the power drilling tool driven by the mud and the wellhead equipment simultaneously drive the drill bit to rotate, and the effect of high drilling speed rotary steering drilling is achieved.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (4)
1. The high-deflecting and high-drilling-speed rotary steering system comprises a drill bit (1), a rotary steering head (2), a bottom hole stabilizer (3), an MWD stabilizer, an LWD stabilizer (7) and an upper stabilizer (8); drill bit (1), rotatory direction of charge head (2), shaft bottom stabilizer (3), MWD and LWD (7) and go up stabilizer (8) and connect gradually its characterized in that:
the underground power generation device also comprises an underground generator short section (4), a wireless transmission system (5) and an underground power drilling tool (6); the number of the wireless transmission systems (5) is 2, the wireless transmission systems are respectively arranged at two ends of an underground power drilling tool (6), one wireless transmission system (5) is connected with MWD and LWD (7), and the other wireless transmission system (5) is connected with the rotary guide head (2) through an underground generator short joint (4) and a well bottom stabilizer (3);
the well bottom stabilizer (3) consists of a second connector (20), a pipe joint (21), a second electronic sleeve (22), a rectifying and transmitting device (23), a well bottom stabilizer body (25), a second sealing sleeve joint (27) and a second sealing contact pin (28); a rectification transmission device (23) is arranged in an inner cavity of the shaft bottom stabilizer body (25), an electronic sleeve II (22) is arranged between the rectification transmission device (23) and the inner wall of the shaft bottom stabilizer body (25), a pipe joint (21) and a sealing sleeve joint II (27) are respectively arranged at two ends of the electronic sleeve II (22), a connector II (20) is connected onto the pipe joint (21), and a sealing contact pin II (28) is arranged in the sealing sleeve joint II (27) and is connected with circuits of adjacent parts; the rectification transmission device (23) is connected with the underground generator short section (4) through a second connector (20) and is connected with the rotary guide head (2) through a second sealing contact pin (28);
the underground generator short section (4) consists of a generator short section sleeve (29), a guide wheel (30), a primary turbine (31), a stator shaft (32), an underground generator (33), a secondary turbine (34), a rotor shaft (35), a connector III (36) and a sealing sleeve joint III (37); the stator shaft (32) penetrates through an inner cavity of a short section sleeve (29) of the generator and is positioned through a third connector (36) and a third sealing sleeve joint (37), a rotor shaft (35) of the underground generator (33) is arranged on the stator shaft (32) through a bearing, a first-stage turbine (31) and a second-stage turbine (34) are arranged at two ends of the rotor shaft (35) of the underground generator (33) and are driven by hydraulic power to rotate relative to the stator shaft (32), and a guide wheel (30) is arranged at the front end of the first-stage turbine and fixed on the stator shaft to play a role in guiding flow;
the wireless transmission system (5) consists of a decoding short section shell (9), a sealing head (10), a connector I (11), a sealing pin I (13), a sealing sleeve connector I (14), a coil sheath (15), an electromagnetic induction coil (16), an electronic sleeve I (17), a decoding transmission device (18) and a pipe connector (19); the electromagnetic induction coil (16) is arranged at an outer circumferential groove of the decoding short section shell (9) and is protected by a coil sheath (15), a first connector (11) and a first electronic sleeve (17) are arranged in an inner cavity of the decoding short section shell (9), the decoding transmission device (18) is arranged in the first electronic sleeve (17), two ends of the decoding short section shell are packaged in the first electronic sleeve (17) through a first sealing sleeve connector (14) and a first pipe connector (19), a first sealing contact pin (13) is arranged in the first sealing sleeve connector (14), the first sealing contact pin (13) is respectively connected with the electromagnetic induction coil (16) and the decoding transmission device (18), the first pipe connector (14) is connected with the sealing connector (10) through the first connector (11), and the pipe connector (19) is connected with an adjacent component; the positions of the sealing head (10) and the pipe joint (19) can be interchanged.
2. The high whiplash, high rate of penetration rotary steerable system of claim 1, wherein: the outer cylinder of the decoding short section shell (9) is provided with a T-shaped through hole, the first connector (11) is provided with a hole corresponding to the T-shaped through hole, and the hollow bolt (12) extends into the T-shaped through hole of the decoding short section shell (9) and the hole of the first connector (11) to connect the T-shaped through hole and the hole into a whole.
3. The high whipstock, high rate of penetration rotary steerable system of claim 1 or claim 2, wherein: the rectifying and transmitting device (23) is multistage and is formed by connecting a plurality of rectifying and transmitting devices in series into a whole through a connecting sleeve (24).
4. The high whiplash, high rate of penetration rotary steerable system of claim 3, wherein: the second electronic casing (22) is arranged in the inner cavity of the bottom hole stabilizer body (25) through a supporting sleeve (26).
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| CN201911020564.0A CN110847821B (en) | 2019-10-25 | 2019-10-25 | High-deflecting and high-drilling-speed rotary guide system |
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| CN201911020564.0A CN110847821B (en) | 2019-10-25 | 2019-10-25 | High-deflecting and high-drilling-speed rotary guide system |
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| CN110847821B true CN110847821B (en) | 2020-12-11 |
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