CN202531042U - Bottom drilling tool combined structure used for coiled tubing drilling or boring <0} - Google Patents
Bottom drilling tool combined structure used for coiled tubing drilling or boring <0} Download PDFInfo
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- CN202531042U CN202531042U CN2012202084830U CN201220208483U CN202531042U CN 202531042 U CN202531042 U CN 202531042U CN 2012202084830 U CN2012202084830 U CN 2012202084830U CN 201220208483 U CN201220208483 U CN 201220208483U CN 202531042 U CN202531042 U CN 202531042U
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Abstract
The utility model discloses a bottom drilling tool combined structure used for coiled tubing drilling or boring, which comprises a coiled tubing, a coiled tubing joint, an upper fast connection joint, a lower fast connection joint, an actuating mechanism, a power drill and a drill bit which are sequentially connected from top to bottom, wherein the coiled tubing joint, the upper fast connection joint, the lower fast connection joint, the actuating mechanism, the power drill and the drill bit are sequentially connected through threads, and the coiled tubing and the coiled tubing joint are connected by a headless screw or clamped. According to the utility model, a drill collar and a drill stem are not used, the time for dismounting and connecting single upright post or drill collar in the drill tripping process is reduced, the drilling or boring operation speed is high and the efficiency is high. The bottom drilling tool combined structure has the advantages of simple structure, reliability in working and wide application range.
Description
Technical Field
The utility model relates to a bottom hole assembly structure especially relates to a coiled tubing drilling bottom hole assembly structure in fields such as oil, natural gas, coal bed gas, shale gas exploitation or the coiled tubing drilling in fields such as geology, railway, electric power, communication, belongs to well drilling or drilling technical field.
Background
Coiled tubing drilling or boring is a popular technology developed abroad in the 90 s of the 20 th century, and with the research and improvement of related technologies, the application of the technology is more and more extensive, the technology is expanded to various fields at the upstream of the petroleum industry, and the development prospect is good. Due to the advantages of wide adaptability, high efficiency, high speed, low cost, low pollution and the like of coiled tubing drilling or drilling, the coiled tubing drilling or drilling tool is bound to become an important direction for the development of drilling or drilling technology. Coiled tubing drilling or boring techniques are likely to become the mainstream of future drilling or boring techniques, eventually leading to a revolution. At present, the research of the coiled tubing drilling or boring field in China is still in the starting stage, the research level of the coiled tubing drilling machine and the matching equipment and technology thereof is extremely low, and the application of the coiled tubing drilling or boring technology in China is severely restricted, so that the research of the coiled tubing drilling or boring downhole tool and the matching technology which are suitable for the national conditions in China becomes one of the particularly important subjects in the field.
The bottom hole assembly in the drill string is an important component of the drilling or boring technique. The conventional rotary table or top drive drilling machine for petroleum and gas drilling or geological drilling slope-increasing or slope-reducing bottom hole assembly structure generally comprises a drill bit, a power drilling tool, drill collars, stabilizers, various joints, drill pipes and the like, namely as shown in fig. 1, the conventional rotary table or top drive drilling machine for drilling slope-increasing or slope-reducing bottom hole assembly structure comprises a stabilizer 11, a power drilling tool 12, a drill bit 13, a non-magnetic drill collar 14, a large-diameter drill collar 15, a small-diameter drill collar 16, a weighted drill pipe 17, a low-strength drill pipe 18 and a high-strength drill pipe 19. While a steady or declination bottom hole assembly structure generally comprises a drill bit, drill collars, stabilizers, various joints, drill pipes and the like, that is, as shown in fig. 2, a rotary table or top drive drilling machine compositely drills into the steady bottom hole assembly structure which comprises a stabilizer 11, a power drilling tool 12, a drill bit 13, a non-magnetic drill collar 14, a drill collar 15 with a larger diameter, a drill collar 16 with a smaller diameter, a weighting drill pipe 17, a drill pipe 18 with a low strength, a drill pipe 19 with a high strength and a stabilizer 20. The bit pressure required by the drill bit during drilling comes from the weight of the drill collar in the drilling fluid or the circulating well-flushing medium, the rotary power of the drill bit comes from a rotary table, a top drive or a power drilling tool, and the reaction torque generated by the formation rock to the drill bit during rock breaking is transmitted to the well wall rock, the drilling fluid and the rotary table or a water tap drilling motor assembly or a guide rail by underground drilling tools such as the drill collar, a stabilizer, a drill rod, various joints, a kelly and the like. However, the conventional drilling or bottom hole drilling assembly is not suitable for drilling by a coiled tubing drilling machine, and the conventional coiled tubing drilling machine is different from the conventional drilling machine and mainly comprises 5 parts of a power system, a control system, a well control system, an injection head, a coiled tubing reel and the like, and the coiled tubing drilling machine does not have a turntable or a guide rail and cannot bear reaction torque.
In view of the above-mentioned shortcomings of the prior art, the present designer is actively making improvements and innovations based on the related scientific research and on-site experience and professional knowledge, in order to realize a bottom hole assembly structure which has a simple structure, is reliable in operation, and is suitable for coiled tubing drilling machine to drill or bore.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, reliable operation, be applicable to the bottom hole assembly structure of coiled tubing rig well drilling or drilling.
In order to achieve the above object, the utility model provides a bottom hole assembly structure for coiled tubing well drilling or drilling, including coiled tubing, coiled tubing joint, upper portion quick connect coupling, lower part quick connect coupling, actuating mechanism, power drilling tool and the drill bit that from top to bottom connects gradually, coiled tubing joint upper portion quick connect coupling lower part quick connect coupling actuating mechanism power drilling tool reaches loop through threaded connection between the drill bit, coiled tubing with through headless screwed connection or joint between the coiled tubing joint.
The bottom hole assembly structure for coiled tubing drilling or boring as described above, wherein the actuator comprises a release nipple, a circulation control valve, a measurement while drilling and transmission instrument, a crawling mechanism, a steering mechanism, a safety back pressure valve and a stabilizer which are in threaded connection from top to bottom in sequence.
The bottom hole assembly structure for coiled tubing drilling or boring as described above, wherein the release sub is a ball type operation hydraulic shear release sub; the circulating control valve is a double-acting circulating control valve; the measurement-while-drilling and transmission instrument comprises a sensor for measuring parameters and a signal transmission instrument for transmitting signals; the crawling mechanism is a telescopic support traction crawling mechanism; the steering mechanism is a hydraulic piston pushing slot pin type steering mechanism; the safety back-pressure valve is a double-baffle one-way safety back-pressure valve; the stabilizer is a hydraulic variable-diameter stabilizer; the power drilling tool is a bent shell power drilling tool.
The bottom hole assembly structure for coiled tubing drilling or boring as described above, wherein the actuating mechanism includes a turbine generator and a measurement while drilling signal transmission nipple, a ball type hydraulic pressure shearing release nipple, a double-acting circulation control valve, a measurement while drilling instrument, a telescopic supporting traction crawling mechanism, a hydraulic piston pushing slotted pin type steering mechanism, a double-baffle type one-way back pressure valve and a rigid rotary vane type stabilizer which are sequentially in threaded connection from top to bottom.
The bottom hole assembly structure for coiled tubing drilling or boring as described above, wherein the power drill is a bent housing power drill.
The bottom drilling tool combination structure for coiled tubing drilling or boring as described above, wherein the actuating mechanism comprises a measurement-while-drilling and transmission instrument, a telescopic supporting traction crawling mechanism, a hydraulic piston pushing slotted pin type steering mechanism and a power motor head which are sequentially in threaded connection from top to bottom, and the power motor head comprises a double-baffle type one-way safety back pressure valve, a ball type operation hydraulic shear release nipple and a double-acting circulation control valve which are sequentially in threaded connection from top to bottom and are arranged along the same axis.
The bottom hole assembly structure for coiled tubing drilling or boring as described above, wherein the power drill is a straight casing power drill.
The bottom hole assembly structure for coiled tubing drilling or boring as described above, wherein the power drill is a screw drill or a turbine drill or an electric drill.
The bottom hole assembly structure for coiled tubing drilling or boring as described above, wherein the stabilizer is a hydraulic variable diameter stabilizer or a rigid rotating blade type stabilizer or a slot type stabilizer or a bow spring stabilizer.
The bottom hole assembly structure for coiled tubing drilling or boring as described above, wherein the steering mechanism is a push or point steering mechanism or a hydraulic piston push slotted pin type or a motor rotary type steering mechanism.
Compared with the prior art, the utility model has the following characteristics and advantages:
the utility model discloses avoid using drill collar and drilling rod, reduced the time of taking off the well drilling in-process and removing the dress and connecting single or stand or drill collar, well drilling or drilling operation are fast, efficient. Has the advantages of simple structure, reliable work and wide application range.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
FIG. 1 is a prior art conventional rotary table or top drive drilling rig drilling slope increasing or decreasing bottom hole assembly configuration;
FIG. 2 is a schematic diagram of a conventional rotary table or top drive drilling machine combined drilling steady bottom hole assembly;
FIG. 3 is a schematic structural diagram of a bottom hole assembly structure for drilling or boring with a coiled tubing drilling machine according to the present invention;
fig. 4 is a schematic structural diagram of a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a third embodiment of the present invention.
Description of reference numerals:
the prior art is as follows: 11-a stabilizer; 12-a power drill; 13-a drill bit; 14-non-magnetic drill collars; 15-larger diameter drill collars; 16-smaller diameter drill collars; 17-weighted drill pipe; 18-low strength drill pipe; 19-high strength drill pipe; 20-stabilizer.
The utility model discloses: 1-coiled tubing; 2-coiled tubing joint; 3-upper quick connection joint; 4-quick connection joint of lower part; 5-releasing the short section; 6-circulation control valve; 7-measurement while drilling and transmission instrument; 8-a crawling mechanism; 9-a steering mechanism; 10-a safety back pressure valve; 11-a stabilizer; 12-a power drill; 13-a drill bit; 21-double baffle type one-way safety back pressure valve; 22-hydraulic piston pushing slot pin type steering mechanism; 23-a telescopic supporting traction crawling mechanism; 24-measurement while drilling instrument; 25-double-acting circulation control valve; 26-ball type operation hydraulic shear release short joint; 27-a short joint for transmitting a measurement while drilling signal by a turbine generator; 28-rigid rotating blade type stabilizer; 29-bent housing power drills; 30-straight housing power drill; 31-power motor head.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
Please refer to fig. 3, which is a schematic structural diagram of a bottom hole assembly structure for drilling or boring by a coiled tubing drilling machine according to the present invention. As shown in the figure, the utility model provides a bottom hole assembly structure for coiled tubing well drilling or drilling, including coiled tubing 1, coiled tubing joint 2, upper portion quick connect coupling 3, lower part quick connect coupling 4, actuating mechanism, power drilling tool 12 and the drill bit 13 that from top to bottom connects gradually, coiled tubing joint 2, upper portion quick connect coupling 3, lower part quick connect coupling 4, actuating mechanism, power drilling tool 12 reach loop through threaded connection between the drill bit 13, coiled tubing 1 with through headless screw connection or joint between the coiled tubing joint 2 to link together coiled tubing 1 and coiled tubing joint 2. The actuating mechanism comprises a release nipple 5, a circulation control valve 6, a measurement while drilling and transmission instrument 7, a crawling mechanism 8, a steering mechanism 9, a safety back pressure valve 10 and a stabilizer 11 which are sequentially in threaded connection from top to bottom. When in use, the utility model discloses a concrete working process does: when the coiled tubing drills or bores a hole, the bit pressure required by the drilling of the bit 13 is provided by the axial hydraulic load generated by the power drill 12 positioned on the bit and the axial thrust generated by the crawling mechanism 8, the rotating torque required by the drilling of the bit 13 is provided by the power drill 12, and the reaction torque generated by the drilling of the bit 13 is transmitted to a well wall, a drilling fluid and an injection head by the stabilizer 11, the crawling mechanism 8 and the coiled tubing 1; the stabilizer 11 and the drill bit 13 are contacted with the well wall to form 2 fulcrums, so that the outer shell of the power drilling tool 12 is not in frictional contact with the well wall and is not abraded and damaged by rock on the well wall, and the stabilizer 11 also enables the central line of the drill bit 13 to be basically superposed with the central line of a well hole or a hole so as to ensure the stable work of the drill bit 13; the safety back-pressure valve 10 is used for preventing the fluid in the well or the hole from flowing back to the coiled tubing or the ground through the bottom hole assembly to cause a complex or accident when ground equipment or the coiled tubing string has a fault; the steering mechanism 9 is used for enabling the drill bit 13 to drill along a pre-designed directional borehole or borehole track or enabling the tool face of the power drilling tool to rotate by a required angle when the actual drilling borehole or borehole track deviates from the designed track; the crawling mechanism 8 has the functions that during drilling, on one hand, axial thrust is generated under the action of working hydraulic pressure difference to promote all tools between the crawling mechanism 8 and the drill bit 13 to move forwards, the drill bit 13 obtains bit pressure, on the other hand, enough radial supporting force is generated to ensure that relative rotation movement does not occur between the crawling mechanism 8 and a well hole or a borehole, and a stable steering positioning reference is provided for the steering mechanism 9; the measurement while drilling and transmission instrument 7 is used for measuring the actual drilling track parameter information of the well hole or the borehole in real time in the drilling process and transmitting the actual drilling track parameter information to ground receiving and processing equipment in real time, so that ground operators can master whether the actual drilling track or the borehole track conforms to or deviates from a designed well hole or borehole track in real time, and then determine whether the steering mechanism 9 needs to steer or rotate; the circulation control valve 6 is used for fracturing a preset rupture disc or a pitching ball with different rupture pressures in the control valve by overhigh pressure to cut off a ball seat pin when a continuous oil pipe drilling or drilling bottom hole assembly structure is blocked and a circulating working medium (drilling fluid or other fluids) cannot circulate, and establishing a circulating channel between the continuous oil pipe above a circulating hole of the circulation control valve 6 and an annulus; the release short section 5 has the function that when the bottom hole assembly tool at the lower part of the lower connector of the release short section 5 is blocked, the release short section 5 is divided into two parts, so that the coiled tubing 1 is temporarily separated from the bottom hole assembly tool at the lower part of the lower connector of the release short section 5, and the recovery tool is waited to be lowered to recover the part of the bottom hole assembly which is released in advance. Compared with the prior art, the utility model discloses avoid using drill collar and drilling rod, reduced the time of taking off the time of drilling in-process and removing the dress and connecting single or stand or drill collar, well drilling or drilling operation are fast, efficient. The utility model discloses a coiled tubing 1 has played the part effect that the drilling rod should have, and the mechanism of crawling 8 and power drilling tool 12 have played the pressurization effect that the drill collar should have.
The utility model discloses set up release nipple joint 5, circulation control valve 6, measurement while drilling and transmission appearance 7, the mechanism of crawling 8, steering mechanism 9, safe backpressure valve 10 between coiled tubing 1 and power drilling tool 12 or stabilizer 11. The important roles of the components or instruments in the drilling or boring process are:
the release short section 5 can be a ball type hydraulic pressure shearing release short section or a mechanical shearing release short section. When the bottom drilling tool is blocked, the release short section 5 is divided into two parts, so that the lower parts of the lower joints of the coiled tubing 1 and the release short section 5 can be temporarily separated from the drilling tool, and the recovery tool is waited to be put into the release joint to recover the previously released part of the bottom drilling tool assembly. The release short section consists of an upper part and a lower part which are connected together through a pin; when the underground needs, the steel ball is thrown in to block the flow passage to generate axial force to shear the pin or apply axial tension to shear the pin, so that the release effect is achieved. The specific structure and working principle of the release nipple 5 are the prior art, and are not described in detail here.
The circulation control valve 6 can be a pulse disk type circulating valve or a ball type circulating valve, and can also be a double-acting circulation control valve. When the coiled tubing drilling or drilling bottom hole assembly structure is blocked and the circulating working medium (drilling fluid or other fluid) cannot circulate, the over-high pressure can fracture the rupture discs preset with different pressures or throw balls to cut off the ball seat pins, so that a full circulation channel between the tubing and the annulus is established. The specific structure and operation of the circulation control valve 6 are well known in the art and will not be described in detail herein.
The measurement while drilling and transmission instrument 7 mainly comprises a sensor for measuring parameters such as a well inclination angle, an azimuth angle, a tool face angle, a well depth, formation rock composition information and the like and a signal transmission instrument for transmitting signals. The parameter measuring sensor and the signal transmission instrument can be combined together or can be separated into two independent short joints. And during drilling, the borehole or borehole trajectory information is measured in real time and transmitted to surface receiving and processing equipment in real time. The sensor and the signal transmission instrument can be two independent short sections, the sensor mainly collects signals, and the signal transmission instrument transmits the signals collected by the sensor to the ground receiving equipment in a wireless or wired mode. When a wired transmission mode is adopted, various sensors and signal transmission instruments are assembled in the same shell in order to reduce the total length of the underground instrument; when the wireless transmission mode is adopted, power supplies of various underground sensors and signal transmission instruments come from an underground turbine generator, and the signal transmission instruments and the generator set are usually arranged in the same shell and are arranged below the lower connecting joint and above other instrument equipment.
The crawling mechanism 8 can be a wheel type traction crawling mechanism or a telescopic support traction crawling mechanism. When drilling, on one hand, the crawling mechanism generates axial thrust under the action of the working hydraulic pressure difference to promote all tools between the crawling mechanism 8 and the drill bit 13 to move forwards, and the drill bit 13 obtains the bit pressure (the bit pressure of the drill bit is derived from the axial hydraulic thrust generated by the working pressure drop of the power drilling tool and the axial thrust generated by the crawling mechanism when the continuous oil pipe drills); on the other hand, sufficient radial support force is generated to keep the face angle of the power drill relatively stable. The specific structure and operation of the crawler 8 are well known in the art and will not be described in detail herein.
The steering mechanism 9 may be a push type or a directional type steering mechanism, and may also be a hydraulic piston push slot pin type or a motor rotation type steering mechanism. The steering mechanism turns the power drill tool face by a desired angle when the well trajectory azimuth line deviates from the design value. The specific structure and operation of the steering mechanism 9 are well known in the art and will not be described in detail herein.
The safety back-pressure valve 10 can be a double-baffle type one-way back-pressure valve or a double-baffle type one-way back-pressure valve with a bypass, and can also be a ball type one-way back-pressure valve; its function is to prevent fluid in the well or bore from flowing back to the coiled tubing in the event of a failure of surface equipment or the coiled tubing string. The specific structure and operation principle of the safety back-pressure valve 10 are well known in the art and will not be described in detail herein.
Several embodiments of the present invention are further described below:
the first embodiment is as follows:
fig. 4 is a schematic structural diagram of a first embodiment of the present invention.
As shown in fig. 4, in this implementation, the utility model provides a coiled tubing creeps into and increases one-sidedly or fall inclined bottom hole assembly structure, it is from last to mainly by coiled tubing 1 down, coiled tubing connects 2, upper portion quick connect coupling 3, lower part quick connect coupling 4, ball formula operation hydraulic shear release nipple joint 26, two effect circulation control valve 25, measurement while drilling and transmission appearance 7, telescopic support pulls crawling mechanism 23, hydraulic piston promotes slotted pin formula steering mechanism 22, two baffle formula one-way safe back pressure valve 21, hydraulic variable diameter stabilizer 11, curved casing power drilling tool 29 and drill bit 13 are constituteed. The specific structure and function thereof are compatible with the foregoing and will not be repeated herein.
Example two:
fig. 5 is a schematic structural diagram of a second embodiment of the present invention.
As shown in fig. 5, the utility model provides a coiled tubing creeps into and increases one-sidedly or fall inclined bottom hole assembly structure, it is from last to mainly by coiled tubing 1 down, coiled tubing connects 2, upper portion attach fitting 3, lower part attach fitting 4, turbine generator and along with boring measurement signal transmission nipple joint 27, ball formula operating fluid pressure shearing release nipple joint 26, two effect circulation control valve 25, along with boring measuring apparatu 24, telescopic support pulls crawling mechanism 23, hydraulic piston promotes slotted pin formula steering mechanism 22, two baffle formula one-way back pressure valve 21, rigidity rotating vane type stabilizer 28, curved casing power drilling tool 12 and drill bit 13 are constituteed.
The difference between the embodiment and the embodiment I is that in the embodiment I, measurement while drilling and signal transmission are completed by the same pup joint, in the embodiment II, measurement while drilling and signal transmission are respectively completed by a measurement while drilling instrument 24, a turbine generator and a measurement while drilling signal transmission pup joint 27, the distance between the measurement while drilling instrument 24 and the turbine generator and the distance between the measurement while drilling signal transmission pup joint 27 are far, and the measurement while drilling instrument 24 mainly measures the orientation of a plane where a telescopic supporting traction crawling mechanism 23, a hydraulic piston pushing slot pin type steering mechanism 22, a double-baffle type one-way back pressure valve 21, a rigid rotating blade type stabilizer 28, a bent shell power drilling tool 12 and a drill bit 13 are located, the included angle between the located axis and the vertical line and other parameters; the tool string composed of the telescopic supporting traction crawling mechanism 23, the hydraulic piston pushing groove pin type steering mechanism 22, the double-baffle type one-way back pressure valve 21, the rigid rotating blade type stabilizer 28, the bent shell power drilling tool 12 and the drill bit 13 is easy to clamp in a well due to the fact that the diameter is large or small and the axis of the tool string is bent. Once stuck, the pins inside the release sub 26 are sheared by axial hydraulic thrust by pitching, and the stuck tool string is temporarily placed in the well to wait for subsequent treatment. The turbine generator and the measurement while drilling signal transmission short joint 27 are small in outer diameter, and the axis is straight and is not prone to being clamped. To reduce the length of the tool string in the stuck well, a turbine generator and measurement-while-drilling signal transmission sub 27 is placed above the release sub 26. In addition, the stabilizer in the first embodiment employs the hydraulic variable diameter stabilizer 11, and the stabilizer in the second embodiment employs the rigid rotary vane type stabilizer 28.
Example three:
fig. 6 is a schematic structural diagram of a third embodiment of the present invention.
As shown in fig. 6, the utility model provides a coiled tubing bores steady oblique bottom hole assembly, it is from last to mainly by coiled tubing 1, coiled tubing joint 2, upper portion quick connect coupling 3, lower part quick connect coupling 4, along with boring measurement and transmission appearance 7, telescopic support pull crawling mechanism 23, hydraulic piston promote slotted pin formula steering mechanism 22, power motor head 31, straight shell power drilling tool 30 and drill bit 13 constitution down.
The difference between the embodiment and the second embodiment is that in the third embodiment, three short sections of the double-baffle type one-way safety back-pressure valve 21, the ball type operation hydraulic shearing release short section 26 and the double-acting circulation control valve 25 are integrated together to form a short section with a small axial size, the short section is also called as a power motor head 31, in order to reduce the axial size of a downhole tool string, the three short sections of the double-baffle type one-way safety back-pressure valve 21, the ball type operation hydraulic shearing release short section 26 and the double-acting circulation control valve 25 are connected together through API standard threads or PAC threads from top to bottom, and can share one shell and are coaxially arranged above a power drilling tool; the outer casing of the power drill in the embodiment is straight and is suitable for steady-inclination drilling, while the outer casings of the power drills in the first embodiment and the second embodiment are bent and are suitable for increasing inclination or reducing inclination drilling.
To sum up, the utility model is used for bottom hole assembly structure of coiled tubing rig well drilling or drilling has simple structure, reliable operation, wide advantage of application scope, applicable in the coiled tubing well drilling of fields such as oil, natural gas, coal bed gas, shale gas exploitation or the coiled tubing drilling of fields such as geology, railway, electric power, communication.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The utility model provides a bottom hole assembly structure for coiled tubing well drilling or drilling, a serial communication port, bottom hole assembly structure is including coiled tubing, coiled tubing joint, upper portion quick connect coupling, lower part quick connect coupling, actuating mechanism, power drilling tool and the drill bit that from top to bottom connects gradually, coiled tubing joint upper portion quick connect coupling lower part quick connect coupling actuating mechanism power drilling tool reaches loop through threaded connection between the drill bit, coiled tubing with through headless screwed connection or joint between the coiled tubing joint.
2. The bottom hole assembly structure for coiled tubing drilling or boring as claimed in claim 1, wherein the actuator comprises a release sub, a circulation control valve, a measurement and transmission while drilling instrument, a crawling mechanism, a steering mechanism, a safety back pressure valve and a stabilizer which are sequentially connected by screw threads from top to bottom.
3. The bottom hole assembly structure for coiled tubing drilling or boring of claim 2, wherein the release sub is a ball operated hydraulic shear release sub; the circulating control valve is a double-acting circulating control valve; the measurement-while-drilling and transmission instrument comprises a sensor for measuring parameters and a signal transmission instrument for transmitting signals; the crawling mechanism is a telescopic support traction crawling mechanism; the steering mechanism is a hydraulic piston pushing slot pin type steering mechanism; the safety back-pressure valve is a double-baffle one-way safety back-pressure valve; the stabilizer is a hydraulic variable-diameter stabilizer; the power drilling tool is a bent shell power drilling tool.
4. The bottom hole assembly structure for coiled tubing drilling or boring of claim 1, wherein the actuator comprises a turbine generator and measurement while drilling signal transmission nipple, a ball type operating hydraulic pressure shear release nipple, a double-acting circulation control valve, a measurement while drilling gauge, a telescopic support traction crawling mechanism, a hydraulic piston push slotted pin type steering mechanism, a double baffle type one-way back pressure valve and a rigid rotary vane type stabilizer which are sequentially in threaded connection from top to bottom.
5. The bottom hole assembly structure for coiled tubing drilling or boring of claim 4, wherein the motor is a bent housing motor.
6. The bottom hole assembly structure for coiled tubing drilling or boring as claimed in claim 1, wherein the actuator comprises a measurement-while-drilling and transmission instrument, a telescopic supporting traction crawling mechanism, a hydraulic piston pushing slotted pin type steering mechanism and a power motor head which are sequentially in threaded connection from top to bottom, and the power motor head comprises a double-baffle type one-way safety back pressure valve, a ball type operation hydraulic shear release sub and a double-acting circulation control valve which are sequentially in threaded connection from top to bottom and are arranged along the same axis.
7. The bottom hole assembly structure for coiled tubing drilling or boring of claim 6, wherein the power drill is a straight casing power drill.
8. The bottom hole assembly structure for coiled tubing drilling or boring of claim 1, wherein the power drill is a screw drill or a turbine drill or an electric drill.
9. The bottom hole assembly structure for coiled tubing drilling or boring of claim 2, wherein the stabilizer is a hydraulic variable diameter stabilizer or a rigid rotating blade type stabilizer or a slot type stabilizer or a bow spring stabilizer.
10. The bottom hole assembly structure for coiled tubing drilling or boring of claim 2, wherein the steering mechanism is a push or point steering mechanism or a hydraulic piston push slotted pin or an electric motor rotary steering mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202084830U CN202531042U (en) | 2012-05-09 | 2012-05-09 | Bottom drilling tool combined structure used for coiled tubing drilling or boring <0} |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012202084830U CN202531042U (en) | 2012-05-09 | 2012-05-09 | Bottom drilling tool combined structure used for coiled tubing drilling or boring <0} |
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| CN202531042U true CN202531042U (en) | 2012-11-14 |
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| CN2012202084830U Expired - Fee Related CN202531042U (en) | 2012-05-09 | 2012-05-09 | Bottom drilling tool combined structure used for coiled tubing drilling or boring <0} |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654035A (en) * | 2012-05-09 | 2012-09-05 | 中国石油大学(北京) | Bottom drilling tool combination structure for coiled tubing drilling or drilling |
| CN105735894A (en) * | 2016-03-11 | 2016-07-06 | 柳超 | Mechanism used for shallow well drilling |
| CN105781440A (en) * | 2016-03-11 | 2016-07-20 | 柳超 | Rotary driving and pushing mechanism for well-drilling drill column |
| CN106194050A (en) * | 2016-08-31 | 2016-12-07 | 天津立林石油机械有限公司 | The anti-lost joint of fast self-locking |
| CN110847821A (en) * | 2019-10-25 | 2020-02-28 | 西安石大斯泰瑞油田技术有限公司 | High-deflecting and high-drilling-speed rotary guide system |
-
2012
- 2012-05-09 CN CN2012202084830U patent/CN202531042U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654035A (en) * | 2012-05-09 | 2012-09-05 | 中国石油大学(北京) | Bottom drilling tool combination structure for coiled tubing drilling or drilling |
| CN105735894A (en) * | 2016-03-11 | 2016-07-06 | 柳超 | Mechanism used for shallow well drilling |
| CN105781440A (en) * | 2016-03-11 | 2016-07-20 | 柳超 | Rotary driving and pushing mechanism for well-drilling drill column |
| CN106194050A (en) * | 2016-08-31 | 2016-12-07 | 天津立林石油机械有限公司 | The anti-lost joint of fast self-locking |
| CN110847821A (en) * | 2019-10-25 | 2020-02-28 | 西安石大斯泰瑞油田技术有限公司 | High-deflecting and high-drilling-speed rotary guide system |
| CN110847821B (en) * | 2019-10-25 | 2020-12-11 | 西安石大斯泰瑞油田技术有限公司 | High-deflecting and high-drilling-speed rotary guide system |
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| C14 | Grant of patent or utility model | ||
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