CN106939774B - Flow distribution assembly for torsion impact drilling speed-increasing tool - Google Patents
Flow distribution assembly for torsion impact drilling speed-increasing tool Download PDFInfo
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- CN106939774B CN106939774B CN201710237022.3A CN201710237022A CN106939774B CN 106939774 B CN106939774 B CN 106939774B CN 201710237022 A CN201710237022 A CN 201710237022A CN 106939774 B CN106939774 B CN 106939774B
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- 238000005553 drilling Methods 0.000 title claims abstract description 74
- 238000001914 filtration Methods 0.000 claims abstract description 53
- 230000001133 acceleration Effects 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 8
- 230000035939 shock Effects 0.000 claims description 5
- 238000009527 percussion Methods 0.000 claims 2
- 239000012530 fluid Substances 0.000 abstract description 23
- 230000003628 erosive effect Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 3
- 239000007790 solid phase Substances 0.000 abstract description 3
- 239000007787 solid Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005755 formation reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010420 art technique Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
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- 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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention relates to the technical field of drilling equipment, in particular to a flow distribution assembly for a torque impact drilling speed-up tool, which comprises a flow guide sleeve body, a filtering mechanism and a flow guide sleeve body, wherein the outer side of the flow guide sleeve body comprises an upper limiting ring platform, a connecting ring platform, a lower limiting ring platform and an annular groove which are sequentially connected from top to bottom and have diameters which are sequentially reduced, and an inner hole of the flow guide sleeve body comprises an inverted frustum hole section which is wide at the upper part and narrow at the lower part and a flow guide straight hole section which is connected with the bottom end of the inverted frustum hole section in a smooth transition manner; the top surface of the flow guide sleeve body is positioned below the upper limiting ring table, and the inner side of the upper end of the flow guide sleeve body is fixedly installed with the connecting ring table. The invention can avoid large particle solid phase and plugging material in the drilling fluid acting on the area which is easy to cause erosion in the torque impact drilling acceleration tool through the shunt opening, effectively slow down the erosion of the core part, prolong the service life of the tool, enable the tool to meet the requirement of plugging operation while drilling and obviously expand the application range of the torque impact drilling acceleration tool.
Description
Technical Field
The invention relates to the technical field of drilling equipment, in particular to a flow distribution assembly for a torque impact drilling speed-up tool.
Background
With the continuous deepening of the exploration and development of oil and gas resources in China, deep oil and gas resources are key fields of the exploration and development of the oil and gas resources in China in future. However, the engineering geological conditions of deep oil and gas resources are particularly complex, and oil and gas drilling faces severe technical challenges. The rapid drilling problem of deep hard formation is a technical key for restricting the development of deep oil and gas resource drilling technology. PDC bits are an important tool for increasing the rate of drilling in deep hard formations. However, when the PDC bit drills in a deep hard formation, a significant "stick-slip" vibration phenomenon occurs, the bit output torque fluctuates abnormally, and the formation cannot be cut continuously, so that the wear of the PDC bit is significantly increased, the bit failure is accelerated, and the rate of penetration is greatly reduced. Both indoor experiments and field practices show that the stick-slip vibration phenomenon is the most important factor causing the low drilling efficiency of deep hard formations. In addition, the stick-slip vibration phenomenon of PDC bits can also accelerate lower drilling fatigue failure, reducing drilling continuity and well bore quality. The stick-slip phenomenon of the PDC drill bit during drilling deep hard strata becomes one of the engineering technical problems restricting the exploration and development of deep oil and gas resources in China.
Aiming at the stick-slip vibration phenomenon of the PDC drill bit during drilling of deep hard strata, a torque impact drilling speed-up tool is developed by Atra, canada, and can apply high-frequency, uniform and stable circumferential impact torque to the PDC drill bit, so that the drill bit can continuously cut rocks, the stick-slip phenomenon can be effectively relieved or eliminated, the mechanical drilling speed is obviously improved, and the tool is widely applied at home and abroad. Various forms of torque impact drilling acceleration tools are also developed by related units such as middle and western petroleum drilling, southwest petroleum university, yangtze university and middle and petrochemical victory oil field in China, and part of products are successfully put into field application. Although the speed-increasing effect of the tools is obvious, the problems that the core parts of the tools are seriously eroded, the service life of the tools is limited, the requirement on drilling fluid is high and the like generally exist. In addition, during the plugging operation, the tools are all blocked due to the plugging material blocking the internal flow channel, and the technical requirement of the plugging operation while drilling cannot be met. These problems severely limit the wide scale deployment of torque shock drilling acceleration tools.
Disclosure of Invention
The invention provides a flow distribution component for a torque impact drilling speed-up tool, which overcomes the defects of the prior art and can effectively solve the problems that the core part of the existing torque impact drilling speed-up tool is seriously eroded, the service life of the tool is limited and the requirement on drilling fluid is high; and during the plugging operation, the tools are all blocked due to the plugging material blocking the internal flow channel, the technical requirement of the plugging operation while drilling cannot be met, and the problem of large-scale popularization and application of the torque impact drilling speed increasing tool is restricted.
The technical scheme of the invention is realized by the following measures: a flow distribution assembly for a torsion impact drilling speed-increasing tool comprises a flow guide sleeve body, a filtering mechanism and a flow guide sleeve body, wherein the outer side of the flow guide sleeve body comprises an upper limiting ring platform, a connecting ring platform, a lower limiting ring platform and an annular groove which are sequentially connected from top to bottom and have diameters which are sequentially reduced, and an inner hole of the flow guide sleeve body comprises an inverted frustum hole section which is wide at the top and narrow at the bottom and a flow guide straight hole section which is connected with the bottom end of the inverted frustum hole section in a smooth transition manner; the top surface of the guide sleeve body is positioned below the upper limit ring platform, the inner side of the upper end of the guide sleeve body is fixedly installed with the connecting ring platform, and the inner side of the lower part of the guide sleeve body is provided with an inner limit ring platform positioned below the lower limit ring platform; the outer side of the annular groove is sleeved with a filtering mechanism which is positioned in the flow guide sleeve body and can enable liquid to pass through and filter the liquid, and the upper end and the lower end of the filtering mechanism are respectively abutted against the bottom surface of the lower limiting ring table and the top surface of the inner limiting ring table; at least one shunt opening is circumferentially distributed on the side wall of the flow guide sleeve body corresponding to the position of the lower limit ring table.
The following is further optimization or/and improvement of the technical scheme of the invention:
the filtering mechanism can comprise an inner annular rib plate, an outer annular rib plate and a filtering ring belt, wherein the inner annular rib plate is positioned at the inner side of the outer annular rib plate and is coaxial with the outer annular rib plate; the inner annular rib plate is sleeved on the outer side of the annular groove, the upper end of the inner annular rib plate abuts against the bottom surface of the lower limiting ring platform, the outer annular rib plate is sleeved in the flow guide sleeve body, and the lower end of the outer annular rib plate abuts against the top surface of the inner limiting ring platform.
The hole of above-mentioned interior spacing ring platform can include narrow and interior profile be the solid of revolution hole section of bowl form under the upper width and be the spacing straight hole section that smooth transition form is connected with solid of revolution hole section bottom, and the lower extreme inboard of spacing straight hole section is equipped with the interior annular groove that is the internal thread poroid, the upper end maximum diameter and the outer annular ribbed slab internal diameter phase-match of solid of revolution hole section.
The difference between the maximum diameter of the upper end of the revolving body hole section and the inner diameter of the outer annular rib plate can be not more than 2mm.
The heights of the inner annular rib plate and the outer annular rib plate can be equal, and the top surfaces of the inner annular rib plate and the outer annular rib plate are positioned on the same horizontal plane; the height of the filtering ring belt is positioned in the middle of the inner annular rib plate.
The distribution of the filtering through holes on the filtering ring belt can form three rings of filtering hole rings from inside to outside at intervals, and each ring of filtering hole ring comprises 30 filtering through holes which are uniformly distributed on the circumference.
The flow dividing ports can be rectangular flow dividing grooves, and three flow dividing ports are uniformly distributed on the side wall of the flow guide sleeve body corresponding to the position of the lower limiting ring table along the circumference.
The invention has reasonable and compact structure and convenient use, can lead the drilling fluid to pass through the inner hole in the middle part of the drainage sleeve body, can lead the drilling fluid to be discharged from the shunt port after passing through the filtering mechanism when the drilling fluid release amount is excessive or the pressure is excessive, thereby realizing the solid-liquid separation of the drilling fluid through the filtering mechanism, avoiding the large granular solid phase and the plugging material in the drilling fluid from acting on the area which is easy to cause erosion in the torsion impact drilling acceleration tool through the shunt port, effectively slowing down the erosion of core components, prolonging the service life of the tool, leading the tool to meet the requirement of the drilling plugging operation, and obviously expanding the application range of the torsion impact drilling acceleration tool.
Drawings
FIG. 1 is a front view of a semi-sectional structural diagram of a preferred embodiment of the present invention.
Fig. 2 is a schematic perspective sectional view of fig. 1.
The codes in the figures are respectively: 1 is the flow guide sleeve body, 2 is last spacing ring platform, 3 is the connection ring platform, 4 is spacing ring platform down, 5 is the annular groove, 6 is back taper hole section, 7 is drainage straight hole section, 8 is interior spacing ring platform, 9 is the diffluence pass, 10 is interior annular floor, 11 is outer annular floor, 12 is the filtration clitellum, 13 is the filtration through-hole, 14 is solid of revolution hole section, 15 is spacing straight hole section, 16 is interior annular groove.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described with reference to the following examples and figures:
as shown in the attached drawings 1 and 2, the flow distribution assembly for the torque impact drilling speed-increasing tool comprises a flow guide sleeve body, a filtering mechanism and a flow guide sleeve body 1, wherein the outer side of the flow guide sleeve body comprises an upper limiting ring platform 2, a connecting ring platform 3, a lower limiting ring platform 4 and an annular groove 5 which are sequentially connected from top to bottom and have diameters which are sequentially reduced, and an inner hole of the flow guide sleeve body comprises an inverted frustum hole section 6 which is wide at the upper part and narrow at the lower part and a flow guide straight hole section 7 which is connected with the bottom end of the inverted frustum hole section 6 in a smooth transition manner; the top surface of the guide sleeve body 1 is positioned below the upper limit ring platform 2, the inner side of the upper end of the guide sleeve body 1 is fixedly installed with the connecting ring platform 3, and the inner side of the lower part of the guide sleeve body 1 is provided with an inner limit ring platform 8 positioned below the lower limit ring platform 4; a filtering mechanism which is positioned in the guide sleeve body 1 and can enable liquid to pass through and filter the liquid is sleeved outside the annular groove 5, and the upper end and the lower end of the filtering mechanism are respectively and tightly abutted against the bottom surface of the lower limiting ring platform 4 and the top surface of the inner limiting ring platform 8; at least one shunting port 9 is circumferentially distributed on the side wall of the flow guide sleeve body 1 corresponding to the position of the lower limit ring table 4. According to the requirement, the torsion impact drilling speed-increasing tool can adopt the prior known technology, and the interior of the torsion impact drilling speed-increasing tool comprises a mandrel and a torsion impact mechanism which is limited and installed with the mandrel; when the tool is used, the tool can be arranged in a torque impact drilling speed-increasing tool, so that the outer side of the upper end of the mandrel and the inner side of the lower part of the guide sleeve body 1 are fixedly arranged together, and the tool is positioned above a torque impact mechanism; in the using process, after entering the torsion impact drilling acceleration tool, the drilling fluid passes through the middle part of the drainage sleeve body, descends after sequentially passing through the inverted frustum hole section 6, the drainage straight hole section 7 and the inner hole of the flow guide sleeve body 1, enters the mandrel and acts on the torsion impact mechanism, so that the torsion impact drilling acceleration operation is realized; when the release amount of the drilling fluid is too large or the pressure is too large, part of the drilling fluid acts on the filtering mechanism from the space between the inner hole of the guide sleeve body 1 and the annular groove 5, and flows out of the shunt port 9 after being filtered by the filtering mechanism; the design of the inverted frustum hole section 6 with a wide upper part and a narrow lower part can play a role in guiding the drilling fluid. This embodiment is rational in infrastructure, high durability and convenient use, it is through from its middle part hole to enable drilling fluid, still can make drilling fluid release amount too much or when pressure is too big, can discharge from reposition of redundant personnel mouth 9 behind filtering mechanism, thereby realize the solid-liquid separation to the drilling fluid through filtering mechanism, can avoid large granule solid phase and lost circulation material in the drilling fluid to act on the easy region that arouses the erosion in the torsion impact drilling acceleration tool through reposition of redundant personnel mouth 9, effectively slow down the erosion of core member, the life of instrument is prolonged, and make the instrument can satisfy the needs of the leak stoppage operation while drilling, show the range of application that expands torsion impact drilling acceleration instrument.
The flow dividing assembly for the torque impact drilling speed-increasing tool can be further optimized or/and improved according to actual needs:
as shown in fig. 1 and 2, the filtering mechanism includes an inner annular rib 10, an outer annular rib 11 and a filtering ring belt 12, the inner annular rib 10 is located inside the outer annular rib 11 and is coaxial with the outer annular rib 11, a filtering ring belt 12 connecting the inner annular rib 10 and the outer annular rib 11 is arranged between the inner annular rib 10 and the outer annular rib 11, and filtering through holes 13 are discretely distributed on the filtering ring belt 12; the inner annular rib plate 10 is sleeved outside the annular groove 5, the upper end of the inner annular rib plate abuts against the bottom surface of the lower limiting ring platform 4, the outer annular rib plate 11 is sleeved inside the flow guide sleeve body 1, and the lower end of the outer annular rib plate abuts against the top surface of the inner limiting ring platform 8. According to requirements, the diameter of the filtering through hole 13 is subject to the aim of filtering out large solid particles in the drilling fluid. Thereby, the drilling fluid can pass through the filtering mechanism from the filtering through hole 13, and the large solid particles in the drilling fluid can be filtered.
As shown in fig. 1 and 2, an inner hole of the inner limiting ring platform 8 includes a revolving body hole section 14 which is wide at the top and narrow at the bottom and has a bowl-shaped inner contour, and a limiting straight hole section 15 which is connected with the bottom end of the revolving body hole section 14 in a smooth transition manner, an inner annular groove 16 which is in an internal thread hole shape is arranged on the inner side of the lower end of the limiting straight hole section 15, and the maximum diameter of the upper end of the revolving body hole section 14 is matched with the inner diameter of the outer annular rib plate 11. Therefore, the hole section 14 of the revolving body can play a role in guiding the flow of the drilling fluid so that the drilling fluid can smoothly act on the filtering mechanism; the arrangement of the inner annular groove 16 in the shape of the internal thread hole enables the connection of the inner mandrel of the torsion impact drilling speed-up tool to be more convenient and labor-saving, the outer side of the upper end of the mandrel is directly fixed with the inner annular groove 16 through threaded connection, and the inner annular groove 16 can also play a role in limiting the top surface of the mandrel.
As shown in the attached figures 1 and 2, the difference between the maximum diameter of the upper end of the revolving body hole section 14 and the inner diameter of the outer annular rib 11 is not more than 2mm. This facilitates the entry of drilling fluid through the bore section 14 of the body of rotation into the filter annulus 12.
As shown in fig. 1 and 2, the inner annular rib 10 and the outer annular rib 11 have the same height, and the top surfaces of the inner annular rib and the outer annular rib are located on the same horizontal plane; the height of the filter ring belt 12 is located in the middle of the inner annular rib 10. This enhances the filtering effect of the filter means.
As shown in fig. 1 and 2, the distribution of the filtering through holes 13 on the filtering ring belt 12 forms three circles of filtering hole rings at intervals from inside to outside, and each circle of filtering hole ring comprises 30 filtering through holes 13 which are uniformly distributed in the circumference. This enables the filter mechanism to have a good filtering effect. Other known techniques for distributing the filter openings 13 may be used, as desired.
As shown in fig. 1 and 2, the diversion port 9 is a rectangular diversion trench, and three diversion ports 9 are uniformly distributed on the side wall of the flow guide sleeve body 1 corresponding to the position of the lower limit ring table 4 along the circumference. Thereby facilitating the uniform discharge of drilling fluid from the tap 9. Other prior art techniques for the diversion port 9 may also be used, as desired.
The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and unnecessary technical features can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (10)
1. A flow distribution assembly for a torsion impact drilling speed-increasing tool is characterized by comprising a flow guide sleeve body, a filtering mechanism and a flow guide sleeve body, wherein the outer side of the flow guide sleeve body comprises an upper limiting ring platform, a connecting ring platform, a lower limiting ring platform and an annular groove which are sequentially connected from top to bottom and have diameters which are sequentially reduced, and an inner hole of the flow guide sleeve body comprises an inverted frustum hole section which is wide at the upper part and narrow at the lower part and a flow guide straight hole section which is connected with the bottom end of the inverted frustum hole section in a smooth transition manner; the top surface of the guide sleeve body is positioned below the upper limit ring platform, the inner side of the upper end of the guide sleeve body is fixedly installed with the connecting ring platform, and the inner side of the lower part of the guide sleeve body is provided with an inner limit ring platform positioned below the lower limit ring platform; the outer side of the annular groove is sleeved with a filtering mechanism which is positioned in the flow guide sleeve body and can enable liquid to pass through and filter the liquid, and the upper end and the lower end of the filtering mechanism are respectively abutted against the bottom surface of the lower limiting ring table and the top surface of the inner limiting ring table; at least one shunt opening is circumferentially distributed on the side wall of the flow guide sleeve body corresponding to the position of the lower limit ring table.
2. The flow divider assembly for a torsional percussion drilling acceleration tool according to claim 1, characterized in that the filtering mechanism comprises an inner annular rib, an outer annular rib and a filtering annulus, the inner annular rib is located inside the outer annular rib, the inner annular rib and the outer annular rib are coaxial, the filtering annulus connecting the inner annular rib and the outer annular rib is arranged between the inner annular rib and the outer annular rib, and filtering through holes are discretely distributed on the filtering annulus; the inner annular rib plate is sleeved outside the annular groove, the upper end of the inner annular rib plate abuts against the bottom surface of the lower limiting ring platform, the outer annular rib plate is sleeved in the flow guide sleeve body, and the lower end of the outer annular rib plate abuts against the top surface of the inner limiting ring platform.
3. The flow distribution assembly for the torque impact drilling speed-increasing tool according to claim 2, wherein the inner hole of the inner limiting ring platform comprises a revolving body hole section which is wide at the top and narrow at the bottom and has a bowl-shaped inner contour and a limiting straight hole section which is connected with the bottom end of the revolving body hole section in a smooth transition manner, an inner annular groove which is in an internal thread hole shape is formed in the inner side of the lower end of the limiting straight hole section, and the maximum diameter of the upper end of the revolving body hole section is matched with the inner diameter of the outer annular rib plate.
4. The flow divider assembly of claim 3, wherein the difference between the maximum diameter of the upper end of the bore section of the body of revolution and the inner diameter of the outer annular rib is no greater than 2mm.
5. The flow divider assembly for a torsional percussion drilling acceleration tool according to claim 2, 3 or 4, characterized in that the inner and outer annular ribs are of equal height and their top surfaces are on the same horizontal plane; the height of the filter ring belt is positioned in the middle of the inner annular rib plate.
6. The flow distribution assembly for the torque shock drilling speed-up tool according to claim 2, 3 or 4, wherein the distribution of the filtering through holes on the filtering ring belt is spaced from inside to outside to form three circles of filtering hole rings, and each circle of filtering hole ring comprises 30 circumferentially uniformly distributed filtering through holes.
7. The flow divider assembly of claim 5, wherein the filter holes are distributed on the filter ring belt at intervals from inside to outside to form three filter hole rings, and each filter hole ring comprises 30 filter holes distributed uniformly on the circumference.
8. The flow dividing assembly for the torque shock drilling speed-up tool according to claim 1, 2, 3, 4 or 7, wherein the flow dividing ports are rectangular flow dividing grooves, and three flow dividing ports are uniformly distributed on the side wall of the flow guide sleeve body corresponding to the position of the lower limiting ring table along the circumference.
9. The flow distribution assembly for the torque shock drilling speed-up tool according to claim 5, wherein the flow distribution port is a rectangular flow distribution groove, and three flow distribution ports are uniformly distributed on the side wall of the flow guide sleeve body corresponding to the position of the lower limit ring table along the circumference.
10. The flow distribution assembly for the torque shock drilling speed-increasing tool according to claim 6, wherein the flow distribution ports are rectangular flow distribution grooves, and three flow distribution ports are uniformly distributed on the side wall of the flow guide sleeve body corresponding to the position of the lower limit ring platform along the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237022.3A CN106939774B (en) | 2017-04-12 | 2017-04-12 | Flow distribution assembly for torsion impact drilling speed-increasing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237022.3A CN106939774B (en) | 2017-04-12 | 2017-04-12 | Flow distribution assembly for torsion impact drilling speed-increasing tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106939774A CN106939774A (en) | 2017-07-11 |
| CN106939774B true CN106939774B (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710237022.3A Active CN106939774B (en) | 2017-04-12 | 2017-04-12 | Flow distribution assembly for torsion impact drilling speed-increasing tool |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4047581A (en) * | 1976-12-01 | 1977-09-13 | Kobe, Inc. | Multistage, downhole, turbo-powered intensifier for drilling petroleum wells |
| US7243740B2 (en) * | 2003-12-05 | 2007-07-17 | Pathfinder Energy Services, Inc. | Filter assembly having a bypass passageway and method |
| CN204299466U (en) * | 2014-12-09 | 2015-04-29 | 山东国岳金刚石制品有限公司 | Torsion spin drilling tool |
| CN204563706U (en) * | 2015-02-02 | 2015-08-19 | 成都科力夫科技有限公司 | A kind of iundustrial oil cartridge filter |
| CN205532592U (en) * | 2016-02-19 | 2016-08-31 | 中石化石油工程技术服务有限公司 | Negative pressure continuous wave pulse generator |
| CN206707656U (en) * | 2017-04-12 | 2017-12-05 | 中国石油集团西部钻探工程有限公司 | Shunt assembly for torsion impact drilling speed instrument |
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2017
- 2017-04-12 CN CN201710237022.3A patent/CN106939774B/en active Active
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Effective date of registration: 20191010 Address after: No. 6, liupukang, Xicheng District, Beijing 100120 Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Applicant before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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