CN118008142B - Soil layer drilling device - Google Patents
Soil layer drilling device Download PDFInfo
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- CN118008142B CN118008142B CN202410226701.0A CN202410226701A CN118008142B CN 118008142 B CN118008142 B CN 118008142B CN 202410226701 A CN202410226701 A CN 202410226701A CN 118008142 B CN118008142 B CN 118008142B
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- 238000005553 drilling Methods 0.000 title claims abstract description 100
- 239000002689 soil Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000009471 action Effects 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000011435 rock Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional 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
- E21B12/00—Accessories for drilling tools
-
- 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
- E21B7/046—Directional drilling horizontal 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
-
- 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
-
- 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
- E21B7/062—Deflecting the direction of boreholes the tool shaft rotating inside a non-rotating guide travelling with the shaft
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 relates to the technical field of drilling, in particular to a soil layer drilling device, which aims to solve the problems that the construction efficiency is low and smooth transmission of a continuous oil pipe and stable drilling of a drill bit are difficult to ensure when a whipstock is adopted to switch from vertical drilling to horizontal drilling in the conventional drilling operation. The invention provides a soil layer drilling device, wherein a first lock hole and a second lock hole are oppositely arranged in a vertical drilling state, a lock rod is inserted into the first lock hole, and a reversing plate is abutted with the inner wall of a reversing head; in the process of switching the vertical drilling to the horizontal drilling, under the action of external force, the shear pin is broken, the end head and the reversing head can slide relatively, and when the end head and the reversing head are mutually close, the reversing plate swings towards the axis direction close to the reversing head; in the horizontal drilling state, the lock rod extends into the second lock hole so that the end head and the reversing head are relatively fixed, and the reversing plate is tightly attached to the inner wall of the reversing head. The soil layer drilling device provided by the invention realizes the efficient reversing of the continuous oil pipe, and is simple and reliable in operation.
Description
Technical Field
The invention relates to the technical field of drilling, in particular to a soil layer drilling device.
Background
In drilling engineering, coiled tubing drilling is an efficient and environment-friendly drilling technology, but in the drilling process, the drilling direction of a drill bit needs to be frequently changed, for example, the drilling direction is changed from vertical drilling to horizontal drilling, and a whipstock is mostly adopted to perform operation at present, the whipstock needs to be put into a well and then put into a drilling tool, but the construction efficiency is low in the mode, and smooth transmission of the coiled tubing and stable drilling of the drill bit are difficult to ensure.
Disclosure of Invention
The invention aims to provide a soil layer drilling device, which solves the problems that the construction efficiency is low, smooth transmission of a continuous oil pipe and stable drilling of a drill bit are difficult to ensure when a whipstock is adopted to switch from vertical drilling to horizontal drilling in the conventional drilling operation.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the invention provides a soil layer drilling device, which comprises: the end head, the reversing head and the reversing plate;
The reversing head is connected with the end head through a shear pin, one end of the end head, which is far away from the reversing head, is used for being connected with a continuous oil pipe, one end of the reversing head, which is far away from the end head, is used for being abutted against a rock stratum, the reversing plate is arranged in the reversing head, and the reversing plate can swing relative to the reversing head;
the reversing head is provided with a first lock hole, a lock rod is inserted into the first lock hole, and the inner wall of the end head is provided with a second lock hole;
In a vertical drilling state, the first lock hole and the second lock hole are arranged oppositely, the lock rod is inserted into the first lock hole, and the reversing plate is abutted against the inner wall of the reversing head;
In the process of switching vertical drilling to horizontal drilling, under the action of external force, the shear nails are broken, the end head and the reversing head can slide relatively, and when the end head and the reversing head are close to each other, the reversing plate swings towards the axial direction close to the reversing head;
Under the horizontal drilling state, the lock rod stretches into the second lock hole so that the end head and the reversing head are relatively fixed, and the reversing plate is tightly attached to the inner wall of the reversing head.
Further, the method comprises the steps of,
The inner wall of the reversing head is provided with a hinging seat, and the reversing plate is hinged with the hinging seat through a rotating shaft.
Further, the method comprises the steps of,
The soil layer drilling device further comprises a gear and a rack;
The rack is connected with the end head or the continuous oil pipe;
the gear is coaxially connected with the rotating shaft, and the gear is meshed with the rack.
Further, the method comprises the steps of,
The soil layer drilling device also comprises a positioning box and a magnetic ball;
the positioning box is connected to the outer wall of the end head, and the magnetic ball is arranged in the positioning box;
Under the vertical drilling state, the magnetic ball is arranged opposite to the second lock hole, and the magnetic ball can apply magnetic repulsive force to the lock rod so that the lock rod is far away from the second lock hole.
Further, the method comprises the steps of,
The positioning box is provided with a cavity, and when the positioning box is changed from a vertical state to a horizontal state and swings from the horizontal state to a state exceeding the horizontal state, the magnetic ball can roll in the cavity in a direction away from the second lock hole.
Further, the method comprises the steps of,
The hole depth of the first lock hole is larger than that of the second lock hole.
Further, the method comprises the steps of,
A first boss is arranged in the end head,
And a space is reserved between the top of the reversing head and the first boss.
Further, the method comprises the steps of,
The outer wall of the reversing head is extended with a second boss;
And a space is reserved between the bottom of the end head and the second boss.
Further, the method comprises the steps of,
The second boss is provided with a chamfer.
Further, the method comprises the steps of,
The end head is in threaded connection with the coiled tubing.
In summary, the technical effects achieved by the invention are as follows:
According to the soil layer drilling device, the reversing head is connected with the end head through the shear pins, the drill bit and the drilling tool are arranged in the continuous oil pipe, along with the drilling of the drill bit, when the continuous oil pipe gradually descends, the transmission direction of the continuous oil pipe is required to be changed from vertical to horizontal, the drilling of the drill bit is stopped, the continuous oil pipe is lowered and pressed, the reversing head at the bottom of the continuous oil pipe is blocked by the bottom layer at the moment, so that the shear pins are disconnected by the action of the downward pressure on the end head, the end head and the reversing head are mutually close, the reversing plate swings, the direction of the drill bit in the process of lowering the drilling is changed from vertical to inclined, and along with the repeated drilling actions and the repeated release of the continuous oil pipe, the lowering direction of the continuous oil pipe is changed from vertical to horizontal; in the horizontal drilling state, the lock rod is inserted into the second lock hole to complete positioning between the end head and the reversing head, so that the reversing plate is tightly attached to the inner wall of the reversing head to complete locking.
The soil layer drilling device provided by the invention realizes the reversing of the coiled tubing, and the positioning and locking are completed through the lock rod, so that the reversing operation of the coiled tubing drilling is simple and reliable, the construction efficiency is improved, and the problems that the construction efficiency is low and the smooth transmission of the coiled tubing and the stable drilling of a drill bit are difficult to ensure when the whipstock is adopted to switch from vertical drilling to horizontal drilling in the conventional drilling operation are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a cross-sectional view of a soil layer drilling device provided by an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the position A in FIG. 1;
FIG. 3 is a schematic view of the structure of the positioning box and the magnetic ball of the soil layer drilling device;
Fig. 4 is an enlarged schematic view of the position B in fig. 3.
Icon:
100-continuous oil pipe;
1-end; 11-shearing nails; 12-a second lock hole; 13-a first boss; 2-reversing heads; 21-a first locking hole; 22-locking bar; 23-hinging seats; 24-rotating shaft; 25-a second boss; 3-reversing plates; 4-gear; 5-racks; 6-positioning box; 61-magnetic sphere.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
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.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings.
The following embodiments and features of the embodiments may be combined with each other without conflict.
The invention provides a soil layer drilling device, which comprises: the end head 1, the reversing head 2 and the reversing plate 3; the reversing head 2 is connected with the end head 1 through a shear pin 11, one end of the end head 1, which is far away from the reversing head 2, is used for being connected with the continuous oil pipe 100, one end of the reversing head 2, which is far away from the end head 1, is used for being abutted with a rock stratum, the reversing plate 3 is arranged in the reversing head 2, and the reversing plate 3 can swing relative to the reversing head 2; the reversing head 2 is provided with a first lock hole 21, a lock rod 22 is inserted into the first lock hole 21, and the inner wall of the end head 1 is provided with a second lock hole 12; in the vertical drilling state, the first lock hole 21 and the second lock hole 12 are arranged oppositely, the lock rod 22 is inserted into the first lock hole 21, and the reversing plate 3 is abutted against the inner wall of the reversing head 2; in the process of switching from vertical drilling to horizontal drilling, under the action of external force, the shear nails 11 are broken, the end head 1 and the reversing head 2 can slide relatively, and when the end head 1 and the reversing head 2 are close to each other, the reversing plate 3 swings towards the axis direction close to the reversing head 2; in the horizontal drilling state, the lock rod 22 extends into the second lock hole 12 so that the end head 1 and the reversing head 2 are relatively fixed, and the reversing plate 3 is tightly attached to the inner wall of the reversing head 2.
According to the soil layer drilling device provided by the invention, the reversing head 2 is connected with the end head 1 through the shear pin 11, the drill bit and the drilling tool are arranged in the continuous oil pipe 100, when the continuous oil pipe 100 is gradually lowered along with drilling of the drill bit and the transmission direction of the continuous oil pipe 100 is required to be changed from vertical to horizontal, drilling of the drill bit is stopped, the continuous oil pipe 100 is lowered and pressed upwards, the reversing head 2 at the bottom of the continuous oil pipe 100 is blocked by the bottom layer, so that the shear pin 11 is disconnected by the downward pressure acting on the end head 1, the end head 1 and the reversing head 2 are mutually close, the reversing plate 3 swings, the direction of the drill bit is changed from vertical to inclined when the drill bit is lowered, and the lowering direction of the continuous oil pipe 100 is changed from vertical to horizontal along with multiple drilling actions and multiple times of release of the continuous oil pipe 100; in the horizontal drilling state, the lock rod 22 is inserted into the second lock hole 12 to complete the positioning between the end head 1 and the reversing head 2, so that the reversing plate 3 is tightly attached to the inner wall of the reversing head 2 to complete the locking. The soil layer drilling device provided by the invention realizes the reversing of the coiled tubing 100, and the positioning and locking are completed through the lock rod 22, so that the reversing operation of the coiled tubing 100 drilling is simple and reliable, the construction efficiency is improved, and the problems that the construction efficiency is low and the smooth transmission of the coiled tubing 100 and the stable drilling of a drill bit are difficult to ensure when the whipstock is adopted to switch from vertical drilling to horizontal drilling in the conventional drilling operation are solved.
The structure and shape of the soil layer drilling device according to the present embodiment will be described in detail with reference to fig. 1 to 4.
Regarding the shape and structure of the head 1, the reversing head 2 and the reversing plate 3, in detail:
As shown in fig. 1, a coiled tubing 100, an end 1 and a reversing head 2 are sequentially connected from top to bottom, the coiled tubing 100 is in threaded connection with the end 1, the reversing head 2 is connected with the end 1 through a shear pin 11, one end, away from the end 1, of the reversing head 2 is used for being abutted against a rock stratum, a reversing plate 3 is arranged in the reversing head 2, and the reversing plate 3 can swing relative to the reversing head 2.
Specifically, the inner wall of the reversing head 2 is provided with a hinge seat 23, and the reversing plate 3 is hinged with the hinge seat 23 through a rotating shaft 24.
In order to enable the rotating shaft 24 to drive the reversing plate 3 to swing, as shown in fig. 2, the embodiment is further provided with a gear 4 and a rack 5, the rack 5 is connected with the end head 1 or the coiled tubing 100, the gear 4 is coaxially connected with the rotating shaft 24, and the gear 4 is meshed with the rack 5.
When the end head 1 and the reversing head 2 relatively move, the rack 5 drives the gear 4 to rotate, and then drives the rotating shaft 24 to rotate, so that the reversing plate 3 swings.
In a vertical drilling state, the reversing plate 3 is abutted with the inner wall of the reversing head 2; in the process of switching from vertical drilling to horizontal drilling, under the action of external force, the shear nails 11 are broken, the end head 1 and the reversing head 2 can slide relatively, and when the end head 1 and the reversing head 2 are close to each other, the reversing plate 3 swings towards the axis direction close to the reversing head 2.
Specifically, a drill bit and a drilling tool are arranged inside the coiled tubing 100, when the transmission direction of the coiled tubing 100 is required to be changed from vertical to horizontal as the drill bit drills, the drilling of the drill bit is stopped, the drill bit is lifted, the coiled tubing 100 is lowered and pressed, the reversing head 2 at the bottom of the coiled tubing 100 is blocked by the bottom layer rock soil, the shear nail 11 is disconnected by the downward force acting on the end head 1, the end head 1 and the reversing head 2 are close to each other, the rack 5 drives the gear 4 to rotate, the reversing plate 3 swings towards the central axis direction of the reversing head 2 (namely, the reversing plate 3 swings towards the direction close to the target horizontal drilling direction to form an inclined surface towards the target horizontal drilling direction, and then the direction of the drill bit is changed), the direction of the drill bit is changed from vertical to inclined when the drill bit is lowered, and the downward direction of the coiled tubing 100 is changed from vertical to horizontal along with multiple drilling actions and multiple times of continuous tubing 100 release.
In order to lock the position between the end head 1 and the reversing head 2 after the steering is completed, a first lock hole 21 is formed in the reversing head 2, a lock rod 22 is inserted into the first lock hole 21 in a sliding manner, a second lock hole 12 is formed in the inner wall of the end head 1, and the lock rod 22 can be inserted into the second lock hole 12.
Specifically, in the vertical drilling state, the first lock hole 21 is disposed opposite to the second lock hole 12, and at this time, the lock lever 22 is inserted into the first lock hole 21, and the reversing plate 3 abuts against the inner wall of the reversing head 2.
During the switching of vertical drilling to horizontal drilling, as can be seen from the above operation, the coiled tubing 100 is commutated by the shear pin 11, rack 5 and pinion 4 mechanisms.
Under the horizontal drilling state, the end head 1 and the reversing head 2 are both close to the horizontal, and under the action of gravity, the lock rod 22 stretches into the second lock hole 12 so that the end head 1 and the reversing head 2 are relatively fixed, and at the moment, the reversing plate 3 is tightly attached to the inner wall of the reversing head 2.
In order to ensure that the locking bar 22 is located in the first locking hole 21 and does not enter the second locking hole 12 during vertical drilling, the present embodiment is further provided with a positioning box 6 and a magnetic ball 61, as shown in fig. 3 and 4.
The positioning box 6 is fixedly connected to the outer wall of the end head 1, and the magnetic ball 61 is arranged inside the positioning box 6.
In the vertical drilling state, the magnetic ball 61 is disposed opposite to the second lock hole 12, and the magnetic ball 61 can apply a magnetic repulsive force to the lock lever 22 to move the lock lever 22 away from the second lock hole 12.
The positioning box 6 has a cavity, and when the positioning box 6 is changed from the vertical state to the horizontal state and swings from the horizontal state to the beyond the horizontal state, the magnetic ball 61 can roll in the cavity in a direction away from the second lock hole 12.
Specifically, when the coiled tubing 100 is changed from vertical to horizontal, the orientation of the positioning box 6 gradually changes to horizontal, after the orientation exceeds the horizontal state, the magnetic ball 61 can roll in the opposite direction released by the coiled tubing 100 due to the action of gravity, the magnetic ball 61 is far away from the second lock hole 12, and after the magnetic ball 61 exerts magnetic repulsive force on the lock rod 22, the magnetic ball 61 is far away from the second lock hole 12, the coiled tubing string is lifted up, and the conversion head moves relative to the end head 1, so that the lock rod 22 can be inserted into the second lock hole 12, positioning between the end head 1 and the conversion head 2 is completed, the reversing plate 3 is tightly attached to the inner wall of the reversing head 2, and locking is completed.
In addition, in order to secure the locking quality of the locking lever 22, the hole depth of the first locking hole 21 needs to be greater than the hole depth of the second locking hole 12, and the length of the locking lever 22 is greater than the hole depth of the second locking hole 12, i.e., when one end of the locking lever 22 is inserted into the second locking hole 12, the other end of the locking lever 22 still extends into the first locking hole 21.
In an alternative embodiment, a first boss 13 is arranged in the end head 1, a space is reserved between the top of the reversing head 2 and the first boss 13, so that the moving stroke of the end head 1 and the reversing head 2 is formed, and the first boss 13 plays a limiting role.
In an alternative embodiment, the outer wall of the reversing head 2 extends with a second boss 25, and a space is provided between the bottom of the head 1 and the second boss 25 to form a moving stroke of the head 1 and the reversing head 2.
The second boss 25 is provided with an inclined chamfer for limiting and can play a certain buffering protection role.
The soil layer drilling device provided by the embodiment realizes the reversing of the coiled tubing 100 through the shearing nails 11, the racks 5, the gears 4 and other mechanisms, has high construction efficiency, and completes the positioning and locking through the magnetic balls 61 and the lock rod 22, so that the reversing operation of the coiled tubing 100 drilling is simple, convenient and reliable.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. A soil layer drilling device, comprising: the end head (1), the reversing head (2) and the reversing plate (3);
The reversing head (2) is connected with the end head (1) through a shear pin (11), one end, far away from the reversing head (2), of the end head (1) is used for being connected with a continuous oil pipe (100), one end, far away from the end head (1), of the reversing head (2) is used for being abutted with a rock stratum, the reversing plate (3) is arranged in the reversing head (2), and the reversing plate (3) can swing relative to the reversing head (2);
the reversing head (2) is provided with a first lock hole (21), a lock rod (22) is inserted into the first lock hole (21), and the inner wall of the end head (1) is provided with a second lock hole (12);
In a vertical drilling state, the first lock hole (21) and the second lock hole (12) are arranged opposite to each other, the lock rod (22) is inserted into the first lock hole (21), and the reversing plate (3) is abutted against the inner wall of the reversing head (2);
In the process of switching vertical drilling to horizontal drilling, under the action of external force, the shear nails (11) are broken, the end head (1) and the reversing head (2) can slide relatively, and when the end head (1) and the reversing head (2) are close to each other, the reversing plate (3) swings towards the axial direction close to the reversing head (2);
In a horizontal drilling state, the lock rod (22) stretches into the second lock hole (12) so that the end head (1) and the reversing head (2) are relatively fixed, and the reversing plate (3) is tightly attached to the inner wall of the reversing head (2);
the device also comprises a positioning box (6) and a magnetic ball (61);
The positioning box (6) is connected to the outer wall of the end head (1), and the magnetic ball (61) is arranged inside the positioning box (6);
In a vertical drilling state, the magnetic ball (61) is arranged opposite to the second lock hole (12), and the magnetic ball (61) can apply magnetic repulsive force to the lock rod (22) so as to enable the lock rod (22) to be away from the second lock hole (12);
the positioning box (6) is provided with a cavity, and when the positioning box (6) is changed from a vertical state to a horizontal state and swings from the horizontal state to a state exceeding the horizontal state, the magnetic ball (61) can roll in the cavity in a direction away from the second lock hole (12);
The hole depth of the first lock hole (21) is larger than that of the second lock hole (12).
2. A soil layer drilling device as claimed in claim 1, wherein,
The inner wall of the reversing head (2) is provided with a hinging seat (23), and the reversing plate (3) is hinged with the hinging seat (23) through a rotating shaft (24).
3. A soil layer drilling device as claimed in claim 2, wherein,
The device also comprises a gear (4) and a rack (5);
the rack (5) is connected with the end head (1) or the continuous oil pipe (100);
the gear (4) is coaxially connected with the rotating shaft (24), and the gear (4) is meshed with the rack (5).
4. A soil layer drilling device as claimed in claim 1, wherein,
A first boss (13) is arranged in the end head (1),
A space is reserved between the top of the reversing head (2) and the first boss (13).
5. A soil layer drilling device as claimed in claim 1, wherein,
The outer wall of the reversing head (2) is extended with a second boss (25);
A space is reserved between the bottom of the end head (1) and the second boss (25).
6. A soil layer drilling device as claimed in claim 5, wherein,
The second boss (25) is provided with a chamfer.
7. A soil layer drilling device as claimed in claim 1, wherein,
The end head (1) is in threaded connection with the coiled tubing (100).
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| CN202410226701.0A CN118008142B (en) | 2024-02-29 | 2024-02-29 | Soil layer drilling device |
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| CN202410226701.0A CN118008142B (en) | 2024-02-29 | 2024-02-29 | Soil layer drilling device |
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| CN118958888A (en) * | 2024-10-21 | 2024-11-15 | 新疆石油管理局有限公司 | A coiled tubing drilling reversing device and a method of using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110984859A (en) * | 2019-11-15 | 2020-04-10 | 中国石油集团长城钻探工程有限公司 | Radial horizontal drilling and sand prevention well completion tool and method |
| CN114790873A (en) * | 2021-01-26 | 2022-07-26 | 中国石油化工股份有限公司 | Multi-branch well bore ultra-short radius windowing sidetrack drilling orientation tool and use method |
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