CN117468859A - Downhole orientation device for micro-hole - Google Patents
Downhole orientation device for micro-hole Download PDFInfo
- Publication number
- CN117468859A CN117468859A CN202210854711.XA CN202210854711A CN117468859A CN 117468859 A CN117468859 A CN 117468859A CN 202210854711 A CN202210854711 A CN 202210854711A CN 117468859 A CN117468859 A CN 117468859A
- Authority
- CN
- China
- Prior art keywords
- sidetracking
- pipe column
- directional
- nipple
- micro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 claims abstract description 28
- 210000002445 nipple Anatomy 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 8
- 230000009467 reduction Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
Landscapes
- 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)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of guiding drilling equipment, in particular to a downhole micro-hole orientation device which at least comprises an auxiliary pipe column from top to bottom, a guiding structure and a sidetracking pipe column penetrating through the auxiliary pipe column, wherein the sidetracking pipe column can be put into the bottom of a well from the inside of the auxiliary pipe column and sidetracking is completed under the guidance of the guiding structure, and the sidetracking pipe column can be kept in a straight line state under the action of the auxiliary pipe column, so that the axial drilling force of the sidetracking pipe column is kept, and the sidetracking pipe column is prevented from bending in the main well and not going smoothly. When the azimuth is required to be adjusted, the directional nipple in the micro-hole underground directional device can receive the instructions sent by the ground to work, drive the sidetracking pipe column to slowly rotate to adjust the azimuth, and can effectively control the azimuth of the sidetracking pipe column.
Description
Technical Field
The invention belongs to the technical field of guiding drilling equipment, and particularly relates to a downhole orientation device for a micro-hole.
Background
The coiled tubing drilling technology is characterized by low cost, pollution reduction, small occupied area and wide application prospect at home and abroad.
Coiled tubing drilling techniques require drilling a tiny borehole no greater than 88.9mm in diameter downhole and then feeding coiled tubing into the tiny borehole.
In the prior art, chinese patent publication No. CN113107365a describes a flexible rotary drilling guiding device, which includes a drilling guiding section, a flexible driving drill string, a flexible guiding driving system, and a hydraulic power section, and a lateral wellbore of a pre-designed route is drilled by guiding the flexible driving drill string. However, the flexible rotary drilling guide device is suitable for being used under the working condition that the diameter of the flexible driving drill string is equivalent to the inner diameter of the main well hole, and for the drilling of a micro well hole, the corresponding flexible drill rod is thin and is easy to bend in the main well hole, so that the flexible rotary drilling guide device is difficult to smoothly advance in the main well hole.
Disclosure of Invention
The invention aims to provide a downhole orienting device for a micro hole, which solves the technical problem that a flexible drill rod for drilling the micro hole is difficult to smoothly advance in a main hole in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
providing a downhole orienting device with micro holes, which at least comprises an auxiliary pipe column from top to bottom, a guiding structure and a sidetracking pipe column penetrating through the auxiliary pipe column; the auxiliary pipe column and the guide structure both comprise seat clamping structures, and the seat clamping and the fixation are finished by being placed in the main well hole in advance until the designed well depth is reached; the sidetracking pipe column can be lowered into the bottom of the well from the inner part of the auxiliary pipe column, and sidetracking is completed under the guidance of the guide structure.
Preferably, the auxiliary tubular column comprises a rigid drill string, a seat clamping nipple and a directional nipple from top to bottom; the rigid drill string consists of a plurality of rigid drill rods, the seat clamping short sections and the directional short sections refer to rigid short sections comprising a seat clamping structure and/or a directional structure, and the seat clamping short sections and the directional short sections can be two independent short sections which are fixed through threaded connection or are jointly contained in the same short section.
Preferably, through structures are arranged in the rigid drill string, the seat clamping short section and the directional short section, and the through structures are matched with the appearance size of the side drilling pipe string, so that the side drilling pipe string is allowed to lift, lower or rotate in the auxiliary pipe string;
preferably, the seat card structure refers to any structure or device capable of realizing tool seat card, and the control mode of the seat card structure can be hydraulic control or electric control, including but not limited to a telescopic pushing piece or a telescopic seat card structure; the seat card structure can enable the rigid integral formed by the seat card nipple and the directional nipple to overcome torque generated by rotation of the sidetracking pipe column.
Preferably, the directional structure refers to any structure or device capable of realizing clamping and rotating functions, including but not limited to hydraulic slips, and is usually arranged in the directional nipple, and when the directional structure works, the directional structure can clamp and penetrate a sidetracking pipe column in the directional nipple to rotate.
Preferably, the guiding structure can be a whipstock or other structures with the same type of functions, and can be firstly put into a well or put into the well together with an auxiliary tubular column in the operation process for guiding the sidetracking tubular column to realize sidetracking operation;
preferably, the sidetracking pipe column refers to any tool combination which satisfies the directional drilling of the main well along the lateral direction, and at least comprises a measurement-while-drilling control system, and the measurement-while-drilling control system refers to a combination of a measurement module and a control module which satisfies the directional measurement and control, including but not limited to a tool face angle measurement module and a near-bit attitude measurement module.
Compared with the prior art, the invention has the beneficial effects that: the downhole directional device at least comprises an auxiliary pipe column from top to bottom, a guiding structure and a sidetracking pipe column penetrating through the auxiliary pipe column, wherein the sidetracking pipe column can be placed into the bottom of a well from the inside of the auxiliary pipe column and sidetracking is completed under the guidance of the guiding structure, and although the diameter of the sidetracking pipe column is greatly smaller than that of a main well hole, the sidetracking pipe column can be kept in a straight line state under the action of the auxiliary pipe column, the axial drilling force of the sidetracking pipe column is kept, and the sidetracking pipe column is prevented from bending in the main well hole and can not smoothly advance. When the azimuth is required to be adjusted, the directional nipple in the micro-hole underground directional device can receive the instructions sent by the ground to work, drive the sidetracking pipe column to slowly rotate to adjust the azimuth, and can effectively control the azimuth of the sidetracking pipe column.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of an embodiment of the downhole orientation device of the present invention in use.
FIG. 2 is a schematic diagram of the connection of the output shaft of the speed reducing mechanism to the slips in an embodiment of the downhole orienting device of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A downhole micro-hole orientation device, refer to fig. 1 and 2.
As shown in fig. 1, the downhole orienting device with micro holes provided in this embodiment includes at least an auxiliary tubular column 1, a guiding structure 2 and a sidetracking tubular column 3 penetrating through the auxiliary tubular column 1 from top to bottom, in general, the auxiliary tubular column 1 and the guiding structure 2 are only lowered into the main well, the fixing manner of the auxiliary tubular column 1 and the guiding structure 2 in the main well is realized by a seat clamping structure, during operation, the auxiliary tubular column 1 and the guiding structure 2 need to be lowered into the designed well depth in advance to complete seat clamping and fixing, and then the sidetracking tubular column 3 is lowered into the well bottom from the inside of the auxiliary tubular column 1 and sidetracking is completed under the guidance of the guiding structure 2;
preferably, the auxiliary tubular string 1 comprises a rigid drill string 101, a seat catch nipple 102 and a directional nipple 103 from top to bottom, wherein the rigid drill string 101 is composed of a plurality of rigid drill rods, and the number of the rigid drill rods is related to the designed well depth of the sidetrack position. In this embodiment, the seat card nipple 102 and the directional nipple 103 are the same rigid nipple, and the rigid nipple is connected and fixed with the upper rigid drill string 101 through threads.
The sidetracking pipe column 3 comprises a flexible drill string 4, a directional tool 5 and a drill bit 6, and can keep the sidetracking pipe column 3 in a straight state under the action of the auxiliary pipe column 1, so that the sidetracking pipe column 3 is prevented from being bent in the main well hole 7 and cannot smoothly advance.
Further, the rigid nipple comprises a seat clamping device formed by a liquid supply motor 1021, a hydraulic source 1022 and a hydraulic bag 1023, and a downhole orientation device formed by a downhole motor 1031, a speed reducing mechanism 1032 and slips 1033.
The hydraulic power source 1022 is pre-stored with hydraulic fluid and is communicated with the hydraulic bag 1022 through a hydraulic pipeline, the liquid supply motor 1021 is in communication connection with a ground control center through a circuit, and when a seat card is needed, the liquid supply motor 1021 receives a ground instruction and starts working, and the hydraulic fluid in the hydraulic power source 1022 is injected into the hydraulic bag 1023 through the hydraulic pipeline. In this embodiment, the hydraulic bladder 1023 is preferably made of an expandable rubber material, and when the hydraulic pressure in the hydraulic bladder 1023 gradually increases, the hydraulic bladder 1023 expands accordingly until the annular gap between the whole rigid nipple and the main well is filled, and at this time, the seat clip can be completed by using the friction force between the hydraulic bladder 1023 and the main well.
Still further, the downhole motor 1031 is also connected to the ground control center through a circuit in communication, and when the downhole directional device is required to operate, the downhole motor 1031 receives a ground command to start operating, and the output shaft thereof rotates at a high speed. Since the high-speed rotation output at this time is not favorable for downhole adjustment, it is also necessary to provide a reduction mechanism 1032 to reduce the rotation speed, and in this embodiment, it is preferable to provide a planetary gear reduction mechanism to output a low rotation speed. The principle of the reduction of the planetary gear reduction mechanism is a mature technology at present and is not repeated here.
Preferably, the output end of the speed reducing mechanism 1032 is provided with a slip 1033, and the slip 1033 is driven by the speed reducing mechanism 1032 to slowly rotate and further transmit torque to the sidetracking pipe string 3, so that the sidetracking pipe string 3 is forced to slowly rotate.
Specifically, as shown in fig. 2, the output shaft of the reduction mechanism 1032 is 10321, the slip 1033 includes a slip shaft 10331, a slip block 10332, a slip ring 10333, and a slip bowl 10334, and the slip bowl 10334 is fixedly connected to the housing of the rigid sub and supports and centers the slip ring 10333 by bearings, such that the slip ring 10333 can freely rotate on the slip bowl 10334. The slip ring 10333 is provided with a plurality of slip grooves uniformly distributed in the circumferential direction, as one of the preferable schemes of the embodiment, the slip ring 10333 is provided with four slip grooves uniformly distributed in the circumferential direction, and the sizes of the slip grooves are matched with those of the sliding shaft 10331 and the sliding block 10332, so that the sliding shaft 10331 can slide up and down along the axial direction, and the sliding block 10332 can slide freely along the radial direction.
Further, the sliding shaft 10331 and the sliding block 10332 are also connected through sliding grooves, and the sliding grooves between the sliding shaft 10331 and the sliding block 10332 are preferably inclined sliding grooves, so as to facilitate the conversion of the upward and downward movement of the sliding shaft 10331 along the axial direction into the free sliding of the sliding block 10332 along the radial direction.
Specifically, the principle that the sliding shaft 10331 slides up and down axially is realized by a screw structure between the sliding shaft 10331 and the output shaft 10321, and when the output shaft 10321 is fixed in the axial direction and rotates, the sliding shaft 10331 is forced to generate axial displacement under the action of the screw, and when the sliding shaft 10331 moves downwards, the sliding shaft 10331 is limited by the slip ring 10333 and under the action of the inclined chute, the sliding block 10332 is pressed to shrink inwards, so that the sidetracking pipe column 3 can be clamped. At this time, the screw rod structure reaches the dead point to slowly transfer torque, and the sliding shaft 10331, the sliding block 10332 and the slip ring 10333 slowly rotate along with the torque.
It should be noted that the slip operation described in this embodiment is merely for illustrating the function of the slip 1033 to grip and rotate the sidetracking pipe string 3, and is not representative of a specific structure or operation of the slip 1033.
Preferably, through structures are arranged in the rigid drill string 101, the seat clamping short joint 102 and the directional short joint 103, and the through structures are matched with the appearance sizes of the side drilling tubular columns 3, so that the side drilling tubular columns 3 are allowed to lift, lower or rotate in the auxiliary tubular column 1;
preferably, the guiding structure 2 is a whipstock, and the whipstock is required to be firstly put into a well to be oriented and clamped in a seat in the operation process, so that the sidetracking pipe column 1 is conveniently guided to realize sidetracking operation; the whipstock also comprises a seat clamping device formed by a plurality of pushing and leaning pieces 201 which are uniformly distributed along the circumferential direction, and the pushing and leaning pieces 201 can be in any form of hydraulic control, electric control and the like.
Still further, the sidetracking pipe column 3 may be any tool combination capable of achieving directional drilling along the lateral direction by the main well hole, at least comprises a measurement-while-drilling control system, and the measurement-while-drilling control system refers to a combination of a measurement module and a control module capable of achieving directional measurement and control, including, but not limited to, a tool face angle measurement module and a near-bit attitude measurement module;
preferably, before the sidetracking pipe column 3 enters the well, the auxiliary pipe column 1 and the guiding structure 2 are clamped in the main well hole through the seat clamping structure seat, when the sidetracking pipe column 3 is lowered into the directional nipple 103, the measurement and control system measures the well bottom azimuth feedback to the ground control center, and when the azimuth is required to be adjusted, the ground sends an instruction to enable the directional nipple 103 to work so as to drive the sidetracking pipe column 3 to slowly rotate to adjust the azimuth.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A micro-hole downhole orientation device, characterized in that: at least comprises an auxiliary pipe column from top to bottom, a guiding structure and a sidetracking pipe column penetrating through the auxiliary pipe column; the auxiliary pipe column and the guide structure both comprise seat clamping structures, and the seat clamping and the fixation are finished by being placed in the main well hole in advance until the designed well depth is reached; the sidetracking pipe column can be lowered into the bottom of the well from the inner part of the auxiliary pipe column, and sidetracking is completed under the guidance of the guide structure.
2. A micro-hole downhole orientation apparatus according to claim 1, wherein: the auxiliary tubular column comprises a rigid drill string, a seat clamping nipple and a directional nipple from top to bottom; the rigid drill string consists of a plurality of rigid drill rods, the seat clamping short sections and the directional short sections refer to rigid short sections comprising a seat clamping structure and/or a directional structure, and the seat clamping short sections and the directional short sections can be two independent short sections which are fixed through threaded connection or are jointly contained in the same short section.
3. A micro-hole downhole orientation device according to claim 1 or 2, wherein: the rigid drill string, the seat clamping nipple and the directional nipple are internally provided with a through structure, and the through structure is matched with the appearance size of the sidetracking pipe string, so that the sidetracking pipe string is allowed to lift, drop or rotate in the auxiliary pipe string.
4. A micro-hole downhole orientation apparatus according to claim 1, 2 or 3, wherein: the seat card structure refers to any structure or device capable of realizing tool seat card, and the control mode can be hydraulic control or electric control, including but not limited to a telescopic pushing piece or an expandable seat card structure; the seat card structure can enable the rigid integral formed by the seat card nipple and the directional nipple to overcome torque generated by rotation of the sidetracking pipe column.
5. A micro-hole downhole orientation apparatus according to claim 1, 2 or 3, wherein: the directional structure refers to any structure or device capable of achieving clamping and rotating functions, including but not limited to hydraulic slips, and is usually arranged in a directional nipple, and when the directional structure works, a side drilling pipe column penetrating through the directional nipple can be clamped to rotate.
6. A radial directional drilling apparatus according to claim 1, wherein: the guiding structure can be a whipstock or other structures with the same type of functions, and can be firstly put into a well or put into the well together with an auxiliary tubular column in the operation process for guiding the sidetracking tubular column to realize sidetracking operation.
7. A micro-hole downhole orientation apparatus according to claim 1, wherein: the sidetracking pipe column is any tool combination meeting the requirement of directional drilling from the side direction of the main well bore and at least comprises a measurement and control while drilling system, and the measurement and control while drilling system is a combination of a measurement module and a control module meeting the requirement of directional measurement and control and comprises a tool face angle measurement module and a near-bit attitude measurement module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210854711.XA CN117468859A (en) | 2022-07-20 | 2022-07-20 | Downhole orientation device for micro-hole |
| PCT/CN2023/108028 WO2024017272A1 (en) | 2022-07-19 | 2023-07-19 | Underground driving device and method for small-diameter drill string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210854711.XA CN117468859A (en) | 2022-07-20 | 2022-07-20 | Downhole orientation device for micro-hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117468859A true CN117468859A (en) | 2024-01-30 |
Family
ID=89631679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210854711.XA Pending CN117468859A (en) | 2022-07-19 | 2022-07-20 | Downhole orientation device for micro-hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117468859A (en) |
-
2022
- 2022-07-20 CN CN202210854711.XA patent/CN117468859A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3094568C (en) | Conveying of tractor perforating tools in horizontal well | |
| US4117895A (en) | Apparatus and method for enlarging underground arcuate bore holes | |
| US4732223A (en) | Controllable downhole directional drilling tool | |
| JP6678278B2 (en) | Mixed rotation guide device | |
| US20240254837A1 (en) | Coiled tubing flexible drill rod ultra-short radius radial drilling string, system and method | |
| CN112593881B (en) | Multifunctional shale geological exploration drill bit and working method thereof | |
| EP1691030B1 (en) | Apparatus and method for directional drilling of holes | |
| WO2019095527A1 (en) | Rotary guide device | |
| CN109098660A (en) | A kind of modulation pushing type and eccentric hoop directional type mixed type guide drilling tool | |
| RU2003133980A (en) | ULTRA-SHORT RADIUS DRILLING WELL DRILLING METHOD | |
| WO2024017346A1 (en) | Directional drilling device for radial drilling | |
| CN114687669B (en) | Ultra-short radius horizontal drilling flexible drill string and construction method | |
| CN107420041B (en) | Full hydraulic power head core drill without drilling tower | |
| CN109083593A (en) | A kind of waterpower backup drill bit directional type guide drilling tool | |
| WO2013165612A1 (en) | Steerable gas turbodrill | |
| CN117468859A (en) | Downhole orientation device for micro-hole | |
| CN214303693U (en) | Hydraulic control type guiding drilling device | |
| CN214247216U (en) | Horizontal drilling stabilizer of flexible drill column for ultra-short radius horizontal drilling | |
| CN210343234U (en) | Electric control system of high-power frequency conversion energy-saving drilling machine | |
| CN111434883B (en) | Oil pipe perforating device | |
| CN115874930A (en) | Drilling device and drilling method for sea natural gas hydrate reservoir | |
| CN104136703B (en) | Feed arrangement and the method that makes downhole tool feed vertically for downhole tool | |
| CA2336326C (en) | Milling system for forming a window in the wall of a tubular | |
| CN2219957Y (en) | Hanging device for whipstock | |
| WO2024017272A1 (en) | Underground driving device and method for small-diameter drill string |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |