CN111720073A - Vibration isolation tool for well drilling - Google Patents
Vibration isolation tool for well drilling Download PDFInfo
- Publication number
- CN111720073A CN111720073A CN201910222476.2A CN201910222476A CN111720073A CN 111720073 A CN111720073 A CN 111720073A CN 201910222476 A CN201910222476 A CN 201910222476A CN 111720073 A CN111720073 A CN 111720073A
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- Prior art keywords
- mandrel
- housing
- vibration isolation
- wall
- drilling
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- 238000005553 drilling Methods 0.000 title claims abstract description 57
- 238000002955 isolation Methods 0.000 title claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 29
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 230000008602 contraction Effects 0.000 abstract description 4
- 238000011161 development Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
- E21B17/076—Telescoping joints for varying drill string lengths; Shock absorbers between rod or pipe and drill bit
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling And Boring (AREA)
Abstract
The invention provides a vibration isolation tool for well drilling, which belongs to the field of well drilling tools and comprises: a cylindrical housing; the mandrel is sleeved in the shell in a sliding manner, the middle part of the mandrel is provided with a pipe hole, and the lower end of the mandrel is connected with a drilling tool; the upper end of the drill rod joint is connected with a drill rod, and a cavity is arranged in the drill rod joint; wherein the mandrel is matched with the shell through a torque transmission structure, and the mandrel extends into the cavity when sliding along the axial direction of the shell. The invention can counteract longitudinal vibration by extension and contraction, and avoid the influence of respective axial vibration of the upper drill rod and the lower drill on each other and the resonance problem caused by vibration coupling of the upper drill rod and the lower drill rod.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas drilling, in particular to a vibration isolation tool for drilling.
Background
Along with the exploration and development of deep wells, ultra-deep wells and large-displacement horizontal wells, the complexity of drilling strata is increased continuously, the softness and hardness of the strata are alternated, the drilling vibration is severe day by day, the axial vibration of an upper drill rod and the drill bit jumping phenomenon of a lower drill bit are serious, the upper and lower vibration coupling is easy to cause resonance, the fatigue damage of a drill column is caused, the service life of the drill bit is shortened, the mechanical drilling speed is reduced, and the drilling accident is caused.
Some oil companies design vibration reduction tools for drilling, which are installed in a bottom hole assembly, and can partially absorb longitudinal vibration at a drill bit through a vibration reduction device such as a spring, so as to reduce damage to the drill bit. However, this kind of tool only aims at the vibration problem at the drill bit, and cannot solve the resonance problem caused by the vibration of the upper drill rod and the vibration coupling with the bottom drill bit.
Disclosure of Invention
In view of the above technical problems in the prior art, the present invention provides a vibration isolation tool for drilling, which can counteract longitudinal vibration by extension and contraction, and avoid the influence of the respective axial vibrations of the upper drill rod and the lower drill rod on each other and the resonance problem caused by the coupling of the upper vibration and the lower vibration.
In order to achieve the above object, the present invention provides a vibration isolation tool for drilling, comprising:
a cylindrical housing;
the mandrel is sleeved in the shell in a sliding manner, the middle part of the mandrel is provided with a pipe hole, and the lower end of the mandrel is connected with a drilling tool;
the upper end of the drill rod joint is connected with a drill rod, and a cavity is arranged in the drill rod joint;
wherein the mandrel is matched with the shell through a torque transmission structure, and the mandrel extends into the cavity when sliding along the axial direction of the shell.
The invention is further improved in that the upper part of the mandrel is provided with a stop block which slides in the cavity.
In a further development of the invention, the inner diameter of the housing is smaller than the inner diameter of the rod assembly sub; the diameter of a circle where the outer wall of the stop block is located is smaller than the inner diameter of the drill rod joint and larger than the inner diameter of the shell.
A further development of the invention is that the inner wall of the lower end of the housing is provided with a sealing means which is in sealing sliding connection with the mandrel.
A further improvement of the invention is that the lower part of the inner wall of the housing is provided with a sliding groove.
The invention has the further improvement that the sealing device is a V-shaped combined sealing ring, a sealing groove is arranged on the inner wall of the lower end of the shell, and the sealing ring is arranged in the sealing groove.
The invention is further improved in that the torque transmission structure comprises a spline structure and a spline groove which are matched with each other;
wherein the spline structure is disposed on an outer wall of the mandrel and the spline groove is disposed on an inner wall of the housing;
alternatively, the spline structure is disposed on an inner wall of the housing and the spline groove is disposed on an outer wall of the spindle.
The invention is further improved in that the torque transmission structure comprises a plurality of internal spline grooves arranged on the outer wall of the mandrel and a plurality of external spline grooves arranged on the inner wall of the shell;
the inner spline groove and the outer spline groove are arranged oppositely, and spline teeth are arranged in a space surrounded by the inner spline groove and the outer spline groove.
The invention is further improved in that the torque transmission structure comprises a polygonal hollow core arranged in the shell, and the mandrel is provided with a polygonal outer wall matched with the hollow core.
The invention is further improved in that the outer shell and the drill rod joint are connected through threads.
Compared with the prior art, the invention has the advantages that:
in the vibration isolation tool for drilling according to the invention, the slidable mandrel and the shell can be relatively telescopic, and longitudinal vibration can be counteracted through extension and contraction, so that the upper drill rod is prevented from being damaged due to the influence of drill bit vibration.
Be provided with the cavity on the tool joint, can hold the dabber at its inside reciprocating motion to can drive the dabber and move on the shell when the drilling rod vibration of lower part. And, set up the baffle on the dabber, the baffle sets up in the cavity, guarantees that the dabber can not the roll-off in the cavity.
In the vibration isolation tool for drilling according to the present invention, a spline structure or a polygonal structure is provided between the housing and the mandrel, and the spline structure or the polygonal structure can be moved relatively in the axial direction and can transmit torque.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:
fig. 1 is a schematic structural view illustrating a vibration isolating tool for drilling according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a downhole vibration isolation tool according to an embodiment of the present invention, showing the connection of the spline structure and the spline groove;
fig. 3 is a schematic cross-sectional view of a vibration isolation tool for drilling according to an embodiment of the present invention, showing a structure provided with spline teeth;
fig. 4 is a schematic cross-sectional view of the vibration isolation tool for drilling according to an embodiment of the present invention, showing the manner of connection between the mandrel and the housing by means of a polygonal structure;
FIG. 5 is a schematic view of the installation position of the vibration isolation tool for drilling according to one embodiment of the present invention, showing the vibration isolation tool in a contracted state;
fig. 6 is a schematic view showing an installation position of the vibration isolating tool for drilling according to the embodiment of the present invention, showing a state in which it is stretched.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
The meaning of the reference symbols in the drawings is as follows: 1. the drill bit comprises a shell, 2, a mandrel, 3, a drill rod joint, 4, a drilling tool, 5, a drill rod, 11, a sliding groove, 12, a sealing device, 13, a spline structure, 14, an external spline groove, 21, a pipe hole, 22, a stop block, 23, a spline groove, 24, an internal spline groove, 25, a spline tooth, 26, a step structure, 31, a cavity, 41, a drill collar, 42 and a drill bit.
Detailed Description
In order to make the technical solutions and advantages of the present invention more apparent, exemplary embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is clear that the described embodiments are only a part of the embodiments of the invention, and not an exhaustive list of all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict.
Fig. 1 schematically illustrates a vibration isolation tool for drilling a well according to an embodiment of the present invention. According to the vibration isolation tool for well drilling, the longitudinal vibration can be counteracted through extension and contraction, and the influence of the axial vibration of the upper drill rod 5 and the lower drill bit 42 on each other and the resonance problem caused by the axial vibration can be avoided.
As shown in fig. 1, the vibration isolation tool for drilling according to an embodiment of the present invention includes a housing 1. The housing 1 has a cylindrical, preferably cylindrical, structure. The vibration isolation tool for well drilling further comprises a mandrel 2, wherein the housing 1 is sleeved outside the mandrel 2, and the mandrel 2 can slide in the housing 1. The mandrel 2 is also of a tubular structure, and the middle part of the mandrel is provided with a pipe hole. The lower end of the mandrel 2 is connected with a drilling tool 4. The vibration isolation tool for well drilling further comprises a drill rod joint 3, the drill rod joint 3 is connected to the upper end of the shell 1, the upper end of the drill rod joint 3 is connected with a drill rod, and the lower end of the drill rod joint 3 is connected with the shell 1. Wherein, be provided with cavity 31 in tool joint 3, the opening setting of cavity 31 is at the lower extreme. In the present embodiment, the spindle 2 is engaged with the housing 1 through a torque transmission structure, torque can be transmitted between the housing 1 and the spindle 2, and the spindle 2 can slide in the axial direction of the housing 1. The upper end of the mandrel 2 can extend into the cavity 31 of the tool joint 3 when the mandrel slides upwards.
When the vibration isolation tool for well drilling according to the present embodiment is used, the tool according to the present embodiment is disposed between the upper drill rod 5 and the lower drill 4, thereby achieving the effect of vibration isolation. When the lower drill bit 42 vibrates, the drill 4 moves to drive the mandrel 2 to move, and the mandrel 2 can slide in the shell 1 and reciprocate in the cavity 31 of the drill rod joint 3. At the same time, the housing 1 and the drill rod coupling 3 remain stationary or vibrate less. Thus, the tool of the embodiment can effectively isolate vibration, and the vibration of the lower drilling tool 4 is prevented from causing adverse effects on the upper drill rod 5.
In one embodiment, the upper part of the mandrel 2 is provided with a stop, which is located on the outer wall of the upper part of the mandrel 2. Preferably, the stopper may be a ring-shaped structure, or may be a plurality of block-shaped structures with fan-shaped cross sections, and the block-shaped structures are uniformly arranged along the circumferential direction of the outer wall of the mandrel 2. Wherein the stopper can slide in the cavity 31 and cannot slide out of the cavity 31.
In the vibration isolation tool for drilling according to the present embodiment, the upper end of the mandrel 2 can be confined in the cavity 31 by providing the stopper. When dabber 2 slided in shell 1, the dog can slide in cavity 31, and the tip of dabber 2 passes through the dog and can be in relatively stable state in tool joint 3, avoids rocking. Meanwhile, the stopper can be limited in the cavity 31 to prevent the mandrel 2 from slipping out.
In a preferred embodiment, the inner diameter of the housing 1 is smaller than the inner diameter of the tool joint 3. After the casing 1 and the drill rod joint 3 are connected, the upper end surface of the casing 1 forms a step-like structure in the drill rod joint 3 due to the small inner diameter of the casing 1. In this embodiment, the diameter of the circle on which the outer wall of the stop is located is smaller than the inner diameter of the tool joint 3 and larger than the inner diameter of the housing 1.
In the vibration isolation tool for drilling according to the present embodiment, since the diameter of the circle on which the outer wall of the stopper is located is smaller than the inner diameter of the tool joint 3 and larger than the inner diameter of the casing 1. The stopper, which is able to contact the upper end surface of the housing 1 when moving down to the bottom of the cavity 31, is stopped by the stepped structure to prevent the stopper from sliding out of the cavity 31.
In one embodiment, the lower end of the housing 1 is provided with a sealing means 12, the sealing means 12 is fixed to the inner wall of the lower end of the housing 1, and the sealing means 12 is in slidable sealing connection with the mandrel 2. The sealing device 12 is always in sealing connection with the drilling tool 4 during the process of the mandrel 2 entering the housing 1 upwards. The lower part of the housing 1 can be sealed by means of a sealing device 12, which serves to isolate the drilling fluid inside and outside the housing 1.
In one embodiment, the mandrel 1 is provided with a step structure 26 on the outer wall, and the mandrel 2 is thinner in the upper part of the step structure and thicker in the lower part. A sliding groove 11 is provided at the lower portion of the inner wall of the housing 1. Preferably, the sliding groove 11 is an annular groove formed on the inner wall of the housing 1. The sliding groove 11 is dimensioned to match the outer wall of the portion of the mandrel 2 below the step structure 26. By providing the sliding groove 11, when the mandrel 2 slides to the upper portion, the step structure 26 is engaged with the sliding groove 11 to perform a limiting function.
In a preferred embodiment, the sealing device 12 is a V-shaped combined sealing ring, and a sealing groove is arranged on the inner wall of the lower end of the housing 1, and the sealing ring is arranged in the sealing groove.
In one embodiment, as shown in FIG. 2, the torque transmitting structure includes a mating spline structure 13 and spline grooves 23. The torque transmitting structure can have two different arrangements. The first mode is as follows: the spline structure 13 is provided on the outer wall of the spindle 2 and the spline grooves 23 are provided on the inner wall of the housing 1. The spline structure 13 is located in the spline groove 23 and is capable of sliding in the spline groove 23. The second mode is as follows: the spline structure 13 is provided on the inner wall of the housing 1 and the spline grooves 23 are provided on the outer wall of the spindle 2.
When the vibration isolation tool for drilling according to the present embodiment is used, the spline structure 13 can slide in the spline groove 23. And because spline structure 13 joint is in spline groove 23, relatively fixed in the circumferencial direction, can transmit the moment of torsion, avoid dabber 2 internal rotation in shell 1.
In another embodiment, as shown in fig. 3, the torque transmitting structure includes a plurality of internally splined grooves 24 disposed on the outer wall of the spindle 2, and a plurality of externally splined grooves 14 disposed on the inner wall of the housing 1. The inner spline grooves 24 and the outer spline grooves 14 are arranged oppositely, and spline teeth 25 are arranged in a space surrounded by the inner spline grooves 24 and the outer spline grooves 14. In this way, torque can also be transmitted.
In another embodiment, as shown in fig. 4, the torque transmission structure comprises a polygonal hollow core disposed in the housing 1, and the spindle 2 is provided with a polygonal outer wall matching the hollow core. In the present embodiment, the cross section of the inner ring of the housing 1 is a polygon, such as a regular hexagon; the section of the outer ring of the mandrel 2 is the same as the shape of the inner ring of the shell 1 and is polygonal. In this way, the housing 1 and the spindle 2 can also be axially relatively displaced and can transmit torque.
In a preferred embodiment, the housing 1 and the tool joint 3 are connected by a thread. The drill rod connector 3 or other components can be conveniently replaced by not only being stably connected but also being convenient to detach in a threaded connection mode.
When the tool according to the embodiment is assembled, the sealing ring is firstly installed on the shell 1, then the shell 1 is matched with the spline on the mandrel 2 through the spline groove 23 in the shell, the shell 1 is sleeved on the root part of the large end of the mandrel 2, then the stop block is installed on the mandrel 2, the drill rod joint 3 is sleeved on the mandrel 2, the drill rod joint 3 is connected with the shell 1 through threads, and the tool is assembled.
The installation position and the vibration isolation principle of the vibration isolation tool for well drilling in the embodiment are shown in fig. 5 and fig. 6, generally, the bottom drilling tool 4 is combined in the design process, the neutral point is located on the drill collar 41, the vibration isolation tool for well drilling is installed on the upper portion of the drill collar 41, therefore, the vibration isolation tool is always in a tensioned state, the telescopic mechanism in the vibration isolation tool for well drilling is always in a stretched state, when the drill bit 42 jumps or the lower drilling tool 4 axially vibrates, the telescopic mechanism in the vibration isolation tool for well drilling freely contracts to absorb the axial displacement, so that the axial vibration damage of the lower drilling tool 4 is isolated and cannot be transmitted to the upper drill rod 5, and the upper drill rod 5 is protected.
Meanwhile, the drill rod has a buckling phenomenon in the borehole, when the drill rod is suddenly released at a certain moment, the drill rod is axially and suddenly extended, and the vibration isolation tool for drilling can absorb the extension displacement of the drill rod, so that the damage of the axial extension of the upper drill rod to the lower drilling tool 4 is avoided. The vibration isolation tool for well drilling can isolate the longitudinal vibration of the upper drill rod and the lower drill tool 4, effectively protect the upper drill string, improve the stress condition of the bottom drill tool 4, prolong the service life of the drill tool 4, improve the mechanical drilling speed and avoid the resonance problem caused by the coupling of the upper vibration and the lower vibration.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, the appended claims are intended to be construed to include preferred embodiments and all such changes and/or modifications as fall within the scope of the invention, and all such changes and/or modifications as are made to the embodiments of the present invention are intended to be covered by the scope of the invention.
Claims (10)
1. A vibration isolation tool for drilling a well, comprising:
a cylindrical housing;
the mandrel is sleeved in the shell in a sliding manner, the middle part of the mandrel is provided with a pipe hole, and the lower end of the mandrel is connected with a drilling tool;
the upper end of the drill rod joint is connected with a drill rod, and a cavity is arranged in the drill rod joint;
wherein the mandrel is matched with the shell through a torque transmission structure, and the mandrel extends into the cavity when sliding along the axial direction of the shell.
2. The vibration isolation tool for drilling according to claim 1, wherein the upper portion of the mandrel is provided with a stopper that slides within the cavity.
3. The vibration isolation tool for drilling as claimed in claim 2, wherein the inner diameter of the housing is smaller than the inner diameter of the tool joint; the diameter of a circle where the outer wall of the stop block is located is smaller than the inner diameter of the drill rod joint and larger than the inner diameter of the shell.
4. The vibration isolation tool for drilling as claimed in any one of claims 1 to 3, wherein a sealing means is provided on an inner wall of the lower end of the housing, the sealing means being in sealing sliding connection with the mandrel.
5. The vibration isolation tool for drilling according to claim 4, wherein a sliding groove is provided at a lower portion of the inner wall of the housing.
6. The vibration isolation tool for drilling according to claim 5, wherein the sealing means is a V-shaped combination sealing ring, and a sealing groove is provided on an inner wall of the lower end of the housing, and the sealing ring is disposed in the sealing groove.
7. The downhole vibration isolation tool of claim 5, wherein the torque transmitting structure comprises a spline structure and a spline groove that mate with each other;
wherein the spline structure is disposed on an outer wall of the mandrel and the spline groove is disposed on an inner wall of the housing;
alternatively, the spline structure is disposed on an inner wall of the housing and the spline groove is disposed on an outer wall of the spindle.
8. The downhole vibration isolation tool of claim 5, wherein the torque transmitting structure comprises a plurality of internally splined grooves disposed on an outer wall of the mandrel, and a plurality of externally splined grooves disposed on an inner wall of the housing;
the inner spline groove and the outer spline groove are arranged oppositely, and spline teeth are arranged in a space surrounded by the inner spline groove and the outer spline groove.
9. The vibration isolation tool for drilling as claimed in claim 5, wherein the torque transmission structure comprises a polygonal hollow core disposed within the housing, and the mandrel has a polygonal outer wall disposed thereon that matches the hollow core.
10. The vibration isolation tool for drilling as claimed in any one of claims 6 to 9, wherein the housing and the tool joint are connected by a screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222476.2A CN111720073A (en) | 2019-03-22 | 2019-03-22 | Vibration isolation tool for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222476.2A CN111720073A (en) | 2019-03-22 | 2019-03-22 | Vibration isolation tool for well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111720073A true CN111720073A (en) | 2020-09-29 |
Family
ID=72562807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910222476.2A Pending CN111720073A (en) | 2019-03-22 | 2019-03-22 | Vibration isolation tool for well drilling |
Country Status (1)
| Country | Link |
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| CN (1) | CN111720073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119195660A (en) * | 2024-11-29 | 2024-12-27 | 陕西太合智能钻探有限公司 | Drill rod with torsion resistance function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844396Y (en) * | 2005-12-12 | 2006-12-06 | 杜晓瑞 | sliding shock absorber |
| CN101608535A (en) * | 2009-06-29 | 2009-12-23 | 扬州天业石油机械有限公司 | Mechanical multidirectional absorber |
| CN102146773A (en) * | 2011-04-22 | 2011-08-10 | 湖南山河智能机械股份有限公司 | Drilling machine shock absorber and using method thereof |
| CN103883265A (en) * | 2014-03-04 | 2014-06-25 | 黄有为 | Variable damping vibration reduction device of natural gas well tubing string |
-
2019
- 2019-03-22 CN CN201910222476.2A patent/CN111720073A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844396Y (en) * | 2005-12-12 | 2006-12-06 | 杜晓瑞 | sliding shock absorber |
| CN101608535A (en) * | 2009-06-29 | 2009-12-23 | 扬州天业石油机械有限公司 | Mechanical multidirectional absorber |
| CN102146773A (en) * | 2011-04-22 | 2011-08-10 | 湖南山河智能机械股份有限公司 | Drilling machine shock absorber and using method thereof |
| CN103883265A (en) * | 2014-03-04 | 2014-06-25 | 黄有为 | Variable damping vibration reduction device of natural gas well tubing string |
Non-Patent Citations (1)
| Title |
|---|
| 石智军等: "《煤矿井下瓦斯抽采(放)钻孔施工新技术》", 30 November 2008, 煤炭工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119195660A (en) * | 2024-11-29 | 2024-12-27 | 陕西太合智能钻探有限公司 | Drill rod with torsion resistance function |
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