CN113323604A - Flexible pipe drilling down-hole drilling tool for submarine drilling rig - Google Patents
Flexible pipe drilling down-hole drilling tool for submarine drilling rig Download PDFInfo
- Publication number
- CN113323604A CN113323604A CN202110799687.XA CN202110799687A CN113323604A CN 113323604 A CN113323604 A CN 113323604A CN 202110799687 A CN202110799687 A CN 202110799687A CN 113323604 A CN113323604 A CN 113323604A
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- Prior art keywords
- flexible pipe
- drilling
- downhole
- sub
- tool
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- 238000005553 drilling Methods 0.000 title claims abstract description 113
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 8
- 210000002445 nipple Anatomy 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
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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
- E21B17/02—Couplings; joints
- E21B17/028—Electrical or electro-magnetic connections
-
- 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
-
- 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
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Geophysics (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a flexible pipe drilling downhole drilling tool for a subsea drilling rig, comprising the following components: the downhole power drilling tool comprises a downhole power drilling tool, a flexible pipe, a drill collar, a guide sub and a drill bit which are sequentially connected in series, wherein the downhole power drilling tool is configured to provide torque to the drill bit, the flexible pipe is configured to transmit the torque generated by the downhole power drilling tool to the drill bit, the drill collar is configured to provide bit pressure to the downhole power drilling tool, a separately operated and adjustable guide module is arranged on the guide sub, and the guide module is configured to form lateral force on the drill bit so as to perform deflecting or maintain the existing well track. The invention uses the power drilling tool and the deflecting technology of the flexible pipe, and can realize deflecting and constructing the horizontal well in the shallow stratum.
Description
Technical Field
The invention relates to a flexible pipe well drilling downhole drilling tool for a submarine drilling rig, and belongs to the technical field of offshore drilling.
Background
With the continuous increase of the depth of water developed by deepwater oil and gas drilling, the current mode of ordinary deepwater marine drilling generates problems in the aspects of drilling cost, drilling efficiency, technical difficulty, safety and the like. To this end, the scholars have proposed a concept of placing a highly automated, modular deepwater drilling system at the subsea mudline, i.e. a subsea drilling rig. The deep water shallow layer oil and gas reservoir is mined by a submarine drilling machine, a horizontal well is often required to be constructed to expose a producing zone to the maximum extent, the mining efficiency is improved, and the technical challenge of shallow layer deflection is brought. In addition, in order to improve the drilling speed, the coiled tubing drilling technology becomes a better choice due to the high-efficiency well building speed, but the coiled tubing cannot provide torque for a downhole drilling tool due to the characteristics of the coiled tubing, so that the drilling fluid has poor lithologic property and wellbore cleanability in the drilling process, and is easy to stick and block and pollute a production zone.
Disclosure of Invention
The invention provides a flexible pipe well drilling downhole drilling tool for a submarine drilling rig, which can realize shallow layer deflection, solve sticking, improve the sand carrying performance and cleanability of drilling fluid and improve the well building efficiency of a shallow horizontal well.
In order to achieve the purpose, the invention adopts the following technical scheme:
a flexible pipe drilling downhole drilling tool for a subsea drilling rig, the downhole drilling tool comprising:
the downhole power drilling tool comprises a downhole power drilling tool, a flexible pipe, a drill collar, a guide sub and a drill bit which are sequentially connected in series, wherein the downhole power drilling tool is configured to provide torque to the drill bit, the flexible pipe is configured to transmit the torque generated by the downhole power drilling tool to the drill bit, the drill collar is configured to provide bit pressure to the downhole power drilling tool, a separately operated and adjustable guide module is arranged on the guide sub, and the guide module is configured to form lateral force on the drill bit so as to perform deflecting or maintain the existing well track.
The flexible pipe drilling downhole drilling tool for the subsea drilling rig preferably comprises a plurality of hinge structures connected in series in sequence along the length of the flexible pipe for changing the angle of the flexible pipe and transmitting axial forces.
The flexible pipe drilling downhole tool for a subsea drilling rig, preferably, the hinge structure comprises: follow the ball seat that flexible pipe length direction is established ties in proper order, be provided with the recess that holds the bulb on the ball seat, the ball seat with the bulb constitutes jointly articulated structure is used for changing the angle and the transmission axial force of flexible pipe.
The flexible pipe drilling downhole drilling tool for the subsea drilling rig preferably further comprises a seal arranged between the ball seat and the ball head for sealing to block communication of drilling fluid inside the flexible pipe with drilling fluid in the annular cavity.
The flexible pipe drilling downhole drilling tool for the subsea drilling rig preferably further comprises a transfer pin and a transfer groove, the transfer groove is arranged on the ball seat, and the ball head is limited in the transfer groove through the transfer pin and used for transferring torque.
The flexible pipe drilling downhole drilling tool for the subsea drilling machine preferably further comprises a signal generator and a dip sub, wherein the signal generator and the dip sub are positioned between the drill collar and the guide sub, and the drill collar, the dip sub, the signal generator and the guide sub are sequentially connected in series;
the signal generator is provided with a downhole computer, and the downhole computer is configured to send a control signal to the guide short joint so as to realize real-time two-way communication between the ground and the underground; and a sensor is arranged on the inclination measuring nipple and is configured to monitor the current well track, transmit related data to the signal generator, analyze the deviation between the current well track and the designed well track through the underground computer and send a control signal to the guide nipple.
The flexible pipe drilling downhole drilling tool for the subsea drilling rig preferably further comprises a battery pack sub, the battery pack sub is located between the drill collar and the inclination measuring sub and is connected in series with the drill collar and the inclination measuring sub, and the battery pack sub is configured to provide power to the guide sub, the signal generator and the inclination measuring sub.
The flexible pipe drilling downhole drilling tool for the submarine drilling rig is characterized in that the curvature radius of the flexible pipe is preferably 1.0-2.0 m.
Due to the adoption of the technical scheme, the invention has the following advantages:
according to the invention, the power drilling tool is matched with the deflecting technology of the flexible pipe, deflecting and horizontal well construction can be realized in a shallow stratum, the flexible pipe is driven by the underground power drilling tool to rotate, well cleaning can be better realized in the drilling process, and well wall collapse is prevented.
Drawings
FIG. 1 is a schematic illustration of a coiled tubing drilling tool for a subsea drilling rig in a connected state according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of flexible pipe in the flexible pipe drilling down hole tool for a subsea drilling rig provided in accordance with the present embodiment of the invention;
the respective symbols in the figure are as follows:
1-a drill bit; 2-guiding short section; 3-a signal generator; 4-inclination measuring short section; 5-a battery pack nipple; 6-drill collar; 7-flexible pipe, 701-ball seat, 702-ball head, 703-sealing element, 704-transfer pin, 705-transfer groove; 8-a downhole power drill; 9-a continuous tube; 10-borehole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the terms "first," "second," "third," "fourth," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
As shown in fig. 1, the present invention provides a flexible pipe drilling downhole drilling tool for a subsea drilling rig, the downhole drilling tool comprising:
the downhole power drilling tool comprises a downhole power drilling tool 8, a flexible pipe 7, a drill collar 6, a guide short section 2 and a drill bit 1 which are sequentially connected in series, wherein the downhole power drilling tool 8 is configured to provide torque for the drill bit 1, the flexible pipe 7 is configured to transmit the torque generated by the downhole power drilling tool 8 to the drill bit 1, the drill collar 6 is configured to provide drilling pressure for the downhole power drilling tool, a separately operated and adjustable guide module is arranged on the guide short section 2, and the guide module is configured to form lateral force on the drill bit 1 so as to perform deflecting or maintain the existing well track.
In a preferred embodiment of the invention, the flexible tube 7 comprises several hinge structures in series in the length direction thereof for changing the angle of the flexible tube 7 and transmitting axial forces.
In a preferred embodiment of the present invention, the hinge structure comprises: ball seat 701 that connects gradually along flexible pipe 7 length direction in series, be provided with the recess that holds bulb 702 on the ball seat 701, ball seat 701 and bulb 702 constitute articulated structure jointly for change flexible pipe 7's angle and transmission axial force. Adjacent ball seats 701 are sealed with rubber.
In a preferred embodiment of the present invention, flexible pipe 7 further comprises a seal 703 disposed between ball seat 701 and ball head 702 for sealing off communication of drilling fluid inside flexible pipe 7 with drilling fluid in the annular cavity.
In a preferred embodiment of the present invention, the flexible tube 7 further includes a transmission pin 704 and a transmission groove 705, the transmission groove 705 is disposed on the ball seat 701, and the ball head 702 is restrained in the transmission groove 705 by the transmission pin 704 for transmitting torque.
In a preferred embodiment of the invention, the downhole drilling tool further comprises a signal generator 3 and a dip pup joint 4, the signal generator 3 and the dip pup joint 4 are positioned between the drill collar 6 and the guide pup joint 2, and the drill collar 6, the dip pup joint 4, the signal generator 3 and the guide pup joint 2 are sequentially connected in series;
the signal generator 3 is provided with a downhole computer which is configured to send a control signal to the guide nipple 2 so as to realize real-time two-way communication between the ground and the underground; and a sensor is arranged on the inclination measuring nipple 4, is configured to monitor the current well track, transmits related data to the signal generator 3, analyzes the deviation of the current well track and the designed well track through an underground computer, and sends a control signal to the guide nipple 2.
In a preferred embodiment of the present invention, a battery pack sub 5 is further included, the battery pack sub 5 being located between the drill collar 6 and the dip sub 4 and being in series with each other, the battery pack sub 5 being configured to provide power to the guide sub 2, the signal generator 3 and the dip sub 4.
In a preferred embodiment of the invention, the radius of curvature of the flexible tube 7 is 1.0-2.0 m.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A flexible pipe drilling downhole drilling tool for a subsea drilling rig, the downhole drilling tool comprising:
the downhole power drilling device comprises a downhole power drilling tool (8), a flexible pipe (7), a drill collar (6), a guide short section (2) and a drill bit (1) which are sequentially connected in series, wherein the downhole power drilling tool (8) is configured to provide torque for the drill bit (1), the flexible pipe (7) is configured to transmit the torque generated by the downhole power drilling tool (8) to the drill bit (1), the drill collar (6) is configured to provide bit pressure for the downhole drilling tool, a separately operated and adjustable guide module is arranged on the guide short section (2), and the guide module is configured to form lateral force on the drill bit (1) so as to perform deviation making or keep an existing well track.
2. Flexible pipe drilling downhole tool for a subsea drilling rig according to claim 1, characterized in that the flexible pipe (7) comprises several articulated structures in series in sequence along its length for changing the angle of the flexible pipe (7) and transmitting axial forces.
3. The flexible pipe drilling downhole tool for a subsea drilling rig according to claim 2, wherein the articulation structure comprises: follow ball seat (701) that flexible pipe (7) length direction is established ties in proper order, be provided with the recess that holds bulb (702) on ball seat (701), ball seat (701) with bulb (702) constitute jointly articulated structure is used for changing the angle and the transmission axial force of flexible pipe (7).
4. A flexible pipe drilling downhole drilling tool for a subsea drilling rig according to claim 3, wherein the flexible pipe (7) further comprises a seal (703) arranged between the ball seat (701) and the ball head (702) for sealing to block communication of drilling fluid inside the flexible pipe (7) with drilling fluid in the annular cavity.
5. Flexible pipe drilling downhole tool for a subsea drilling rig according to claim 4, wherein the flexible pipe (7) further comprises a transfer pin (704) and a transfer groove (705), the transfer groove (705) being arranged on the ball seat (701), the ball head (702) being restrained in the transfer groove (705) by the transfer pin (704) for transferring torque.
6. The flexible pipe drilling downhole drilling tool for a subsea drilling rig according to claim 1, further comprising a signal generator (3) and a dip sub (4), the signal generator (3) and the dip sub (4) being located between the drill collar (6) and the guide sub (2), the drill collar (6), the dip sub (4), the signal generator (3) and the guide sub (2) being connected in series in that order;
the signal generator (3) is provided with a downhole computer which is configured to send a control signal to the guide short joint (2) so as to realize real-time two-way communication between the ground and the underground; and a sensor is arranged on the inclination measuring nipple (4), is configured to monitor the current well track and transmit related data to the signal generator (3), and sends a control signal to the guide nipple (2) by analyzing the deviation of the current well track and the designed well track through the underground computer.
7. Flexible pipe drilling downhole tool for a subsea drilling rig according to claim 6, further comprising a battery sub (5), the battery sub (5) being located between and in series with the drill collar (6) and the inclination sub (4), the battery sub (5) being configured to provide power to the guide sub (2), the signal generator (3) and the inclination sub (4).
8. Flexible pipe drilling downhole tool for a subsea drilling rig according to claim 1, characterized in that the radius of curvature of the flexible pipe (7) is 1.0-2.0 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110799687.XA CN113323604A (en) | 2021-07-15 | 2021-07-15 | Flexible pipe drilling down-hole drilling tool for submarine drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110799687.XA CN113323604A (en) | 2021-07-15 | 2021-07-15 | Flexible pipe drilling down-hole drilling tool for submarine drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113323604A true CN113323604A (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110799687.XA Pending CN113323604A (en) | 2021-07-15 | 2021-07-15 | Flexible pipe drilling down-hole drilling tool for submarine drilling rig |
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| CN (1) | CN113323604A (en) |
Citations (9)
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|---|---|---|---|---|
| CN104453714A (en) * | 2014-11-02 | 2015-03-25 | 中国石油集团钻井工程技术研究院 | Rotary steering tool controlling method |
| US20160108679A1 (en) * | 2014-10-15 | 2016-04-21 | Schlumberger Technology Corporation | Pad in Bit Articulated Rotary Steerable System |
| CN106223871A (en) * | 2016-08-10 | 2016-12-14 | 中国石油天然气股份有限公司 | Flexible drill rod |
| CN206608165U (en) * | 2017-03-28 | 2017-11-03 | 中国海洋石油总公司 | A kind of nearly drill bit deviational survey BHA of high build angle rate |
| CN112324332A (en) * | 2020-10-19 | 2021-02-05 | 万晓跃 | Controllable-track lateral drilling tool and method |
| CN112814568A (en) * | 2021-02-24 | 2021-05-18 | 万晓跃 | Flexible guiding drilling tool |
| CN112814658A (en) * | 2021-03-26 | 2021-05-18 | 中国石油化工股份有限公司胜利油田分公司石油工程技术研究院 | Flexible inclination measuring system and method for ultra-short radius well |
| CN112943097A (en) * | 2021-04-16 | 2021-06-11 | 万晓跃 | High-flexibility shaft bottom self-powered while-drilling system |
| CN215057192U (en) * | 2021-07-15 | 2021-12-07 | 中国海洋石油集团有限公司 | Flexible pipe drilling down-hole drilling tool for submarine drilling rig |
-
2021
- 2021-07-15 CN CN202110799687.XA patent/CN113323604A/en active Pending
Patent Citations (10)
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| US20160108679A1 (en) * | 2014-10-15 | 2016-04-21 | Schlumberger Technology Corporation | Pad in Bit Articulated Rotary Steerable System |
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