CN108266146B - Quick coring device for petroleum drilling - Google Patents
Quick coring device for petroleum drilling Download PDFInfo
- Publication number
- CN108266146B CN108266146B CN201810004520.8A CN201810004520A CN108266146B CN 108266146 B CN108266146 B CN 108266146B CN 201810004520 A CN201810004520 A CN 201810004520A CN 108266146 B CN108266146 B CN 108266146B
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- threads
- sleeve
- fixedly provided
- joint
- nipple
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- 238000005553 drilling Methods 0.000 title claims abstract description 22
- 239000003208 petroleum Substances 0.000 title claims abstract description 18
- 210000002445 nipple Anatomy 0.000 claims abstract description 58
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 210000000078 claw Anatomy 0.000 claims abstract description 51
- 239000000725 suspension Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of underground coring in oil fields, in particular to a rapid coring device for petroleum drilling; including lifting rod, connector, suspension nipple joint, bearing retainer ring, bearing housing, urceolus, reposition of redundant personnel joint, piston sleeve, piston rod, inner tube, drill bit, two public nipple joint, bearing, piston body and sealing washer, lifting rod lower extreme fixed mounting is in the connector, and two public nipple joint lower extreme and urceolus upper end fixed mounting are in the same place, and urceolus lower extreme outside fixed mounting has the drill bit, and the inner tube is located urceolus and drill bit, and the lower extreme outside fixed mounting of inner tube has claw cover to connect. The invention has reasonable and compact structure and convenient use, the steel ball is arranged at the upper part of the ball seat, so that the replacement of slurry and sealing liquid after the upward sealing ring of the floating piston is damaged when the inner cylinder is pressed, the coring sealing rate is ensured, the working efficiency of hoisting, assembling and discharging the tool is improved, the labor time is saved, and the sealing reliability of the inner cylinder is improved.
Description
Technical Field
The invention relates to the technical field of underground coring devices in oil fields, in particular to a rapid coring device for petroleum drilling.
Background
The outer cylinder of the existing coring tool is generally the same in outer diameter, only lifting pup joint or lifting wire can be used for lifting on site, trouble and effort are needed, the sealing ring on the floating piston is dynamically sealed when the inner cylinder is in a pressure holding condition, but the sealing ring works under the condition of slurry, the sealing ring is easy to damage in the sliding sealing process due to the fact that the slurry contains fixed particles and irregular rock fragments, the sealing ring loses an upper sealing function, the slurry is replaced with sealing liquid in the inner cylinder, the coring sealing rate is affected, and further core testing of a user is affected. Before the core is taken out, the core-grabbing condition is generally checked and the core-taking drill bit is cleaned, the lifting nipple is required to be installed first, the core is taken for multiple times, the shackle is required to be installed and removed for multiple times, the thread abrasion is increased, and the service life of the tool is shortened.
Disclosure of Invention
The invention provides a rapid coring device for petroleum drilling, which overcomes the defects of the prior art, and can effectively solve the problems that the sealing ring is easy to damage in the sliding sealing process of the prior coring tool, so that the sealing function is lost, slurry is replaced with sealing liquid in an inner cylinder, and the coring sealing rate is affected.
The technical scheme of the invention is realized by the following measures: the quick coring device for petroleum drilling comprises a lifting rod, a connector, a suspension nipple, a bearing baffle ring, a bearing sleeve, an outer cylinder, a shunt joint, a piston sleeve, a piston rod, an inner cylinder, a drill bit, a double male nipple, a bearing, a piston body and a sealing ring, wherein the lower end of the lifting rod is fixedly arranged in the connector, the lower end of the double male nipple and the upper end of the outer cylinder are fixedly arranged together, the drill bit is fixedly arranged outside the lower end of the outer cylinder, the inner cylinder is arranged in the outer cylinder and the drill bit, a claw sleeve joint is fixedly arranged outside the lower end of the inner cylinder, a core claw sleeve with a wide upper part and a narrow lower part and a frustum-shaped inner side is fixedly arranged outside the lower end of the claw sleeve joint, the core claw sleeve is sleeved on the wall of the drill bit in a limiting sleeve manner, a claw is sleeved in the core claw sleeve, the top of the core claw is provided with a baffle ring which is propped up by the claw sleeve joint, the claw sleeve joint and the inner side of the baffle ring is sleeved with a sealing body, and the sealing body is connected with the baffle ring through pins, the sealing body lower part is fixedly provided with a sealing rod, the drill bit is provided with an axial drilling fluid circulation hole, the outer side of the upper end of the suspension nipple is provided with an annular boss, the annular boss is arranged on the upper end face of the double male nipple, the middle part of the suspension nipple is internally provided with a ring table, the lower part of the connector is sleeved in the suspension nipple above the ring table, at least one overflowing hole is radially distributed at the upper part of the connector, the upper part of the bearing sleeve is fixedly arranged at the outer side of the upper part of the suspension nipple, the upper part of the shunt connector is positioned in the suspension nipple, a bearing is arranged between the shunt connector and the bearing sleeve, the outer side of the upper end of the shunt connector is fixedly provided with a bearing baffle ring, the upper part of the shunt connector is radially distributed with at least one circulation hole along the circumference, the outer side of the lower part of the shunt connector is fixedly arranged with the inner side of the upper part of the piston sleeve, the piston body is sleeved at the inner side of the piston sleeve and is sealed by a sealing ring, at least two pressure relief holes are radially formed in the middle of a piston sleeve of the upper portion of the piston body along the circumference, a ball seat is fixedly mounted on the inner side of the lower end of the piston sleeve, a steel ball is arranged on the upper end of the ball seat, the outer side of the lower end of the piston sleeve and the upper end of the inner cylinder are fixedly mounted together, the upper portion of a piston rod is sleeved in a shunt joint, and the lower portion of the piston rod is fixedly mounted in the piston body.
The following are further optimizations and/or improvements to the above-described inventive solution:
the upper end of the double male pup joint is fixedly provided with a connector, and the upper end of the connector is fixedly provided with a lifting pup joint.
The middle part of the split joint is fixedly provided with a spiral ring, the lower part of the split joint is provided with a lower groove with a downward opening, the lower end of the spiral ring is fixedly provided with a clamping ring, the clamping ring is provided with a boss, and the boss is clamped in the lower groove.
And a sealing ring is arranged between the core claw sleeve and the drill bit.
The lower end of the lifting rod is fixedly installed with the connector through threads, and a protection connector is fixedly installed between the outer barrel and the drill bit through threads.
The lower end of the upper joint is fixedly mounted with the upper end of the double male nipple through threads, the hanging nipple is fixedly mounted with the bearing sleeve through threads, the lower end of the double male nipple is fixedly mounted with the upper end of the outer cylinder through threads, the outer side of the lower end of the piston sleeve is fixedly mounted with the upper end of the inner cylinder through threads, the outer side of the lower end of the inner cylinder is fixedly mounted with the claw sleeve joint through threads, and the claw sleeve joint is fixedly mounted with the core claw sleeve through threads.
The invention has reasonable and compact structure and convenient use, the steel ball is arranged at the upper part of the ball seat, so that the replacement of slurry and sealing liquid after the upward sealing ring of the floating piston is damaged when the inner cylinder is pressed, the coring sealing rate is ensured, the working efficiency of hoisting, assembling and discharging the tool is improved, the labor time is saved, and the sealing reliability of the inner cylinder is improved.
Drawings
FIG. 1 is a schematic view of the top half of the preferred embodiment of the present invention in front cross-section.
Fig. 2 is a schematic view of the front cross-sectional structure of the lower half of the preferred embodiment of the present invention.
The codes in the drawings are respectively: 1 is a lifting rod, 2 is a lifting nipple, 3 is a connector, 4 is a hanging nipple, 5 is a bearing retainer ring, 6 is a bearing sleeve, 7 is an outer cylinder, 8 is a shunt joint, 9 is a piston sleeve, 10 is a piston rod, 11 is an inner cylinder, 12 is a drill bit, 13 is an upper joint, 14 is a double male nipple, 15 is an annular boss, 16 is an overflow hole, 17 is a bearing, 18 is a circulation hole, 19 is a spiral ring, 20 is a lower groove, 21 is a clamping ring, 22 is a boss, 23 is a piston body, 24 is a pressure relief hole, 25 is a ball seat, 26 is a steel ball, 27 is a protection joint, 28 is a claw sleeve joint, 29 is a core claw sleeve, 30 is a sealing body, 31 is a retainer ring, 32 is a pin, 33 is a sealing rod, 34 is a core claw, 35 is a drilling fluid circulation hole, 36 is a sealing ring, and 37 is a ring table.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of the upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawing of the specification.
The invention is further described below with reference to examples and figures:
as shown in figures 1 and 2, the petroleum drilling quick coring device comprises a lifting rod 1, a connector 3, a suspension nipple 4, a bearing baffle ring 5, a bearing sleeve 6, an outer cylinder 7, a shunt joint 8, a piston sleeve 9, a piston rod 10, an inner cylinder 11, a drill bit 12, a double male nipple 14, a bearing 17, a piston body 23 and a sealing ring 36, wherein the lower end of the lifting rod 1 is fixedly arranged in the connector 3, the lower end of the double male nipple 14 is fixedly arranged together with the upper end of the outer cylinder 7, the drill bit 12 is fixedly arranged outside the lower end of the outer cylinder 7, the inner cylinder 11 is positioned in the outer cylinder 7 and the drill bit 12, a claw sleeve joint 28 is fixedly arranged outside the lower end of the inner cylinder 11, a core claw sleeve 29 with the upper part being wide and the lower part being in a frustum shape is fixedly arranged outside the lower part, the core claw sleeve 29 is fixedly sleeved on the inner wall of the drill bit 12, a core claw 34 is sleeved in the core claw sleeve 29, the top of the core claw 34 is provided with a baffle ring 31 which is tightly propped up by the claw sleeve joint 28, the inner sides of the claw sleeve joint 28 and the baffle ring 31 are sleeved with a sealing body 30, the sealing body 30 and the baffle ring 31 are connected together through a pin 32, the lower part of the sealing body 30 is fixedly provided with a sealing rod 33, the drill bit 12 is provided with an axial drilling fluid circulation hole 35, the outer side of the upper end of the suspension nipple 4 is provided with an annular boss 15, the annular boss 15 is seated on the upper end surface of the double male nipple 14, the middle part of the suspension nipple 4 is internally provided with a ring table 37, the lower part of the connector 3 is sleeved in the suspension nipple 4 above the ring table 37, at least one overflow hole 16 is radially distributed at the upper part of the connector 3, the upper part of the bearing sleeve 6 is fixedly arranged on the outer side of the upper part of the suspension nipple 4, the upper part of the shunt joint 8 is fixedly provided with a bearing 17 between the shunt joint 8 and the bearing sleeve 6, the outer side of the upper end of the shunt joint 8 is fixedly provided with a bearing baffle ring 5, the upper portion of the split joint 8 is radially provided with at least one circulating hole 18 along the circumference, the outer side of the lower portion of the split joint 8 is fixedly arranged with the inner side of the upper portion of the piston sleeve 9, the piston body 23 is sleeved on the inner side of the piston sleeve 9 and is sealed through a sealing ring 36, the middle portion of the piston sleeve 9 at the upper portion of the piston body 23 is radially provided with at least two pressure relief holes 24 along the circumference, the inner side of the lower end of the piston sleeve 9 is fixedly provided with a ball seat 25, the upper end of the ball seat 25 is provided with a steel ball 26, the outer side of the lower end of the piston sleeve 9 is fixedly arranged with the upper end of the inner cylinder 11, the upper portion of the piston rod 10 is sleeved in the split joint 8, and the lower portion of the piston rod 10 is fixedly arranged in the piston body 23. The number of the overflow holes 16, the circulation holes 18 and the pressure relief holes 24 is set to be corresponding to the specific actual production operation condition; both core leg 34 and drill bit 12 are known in the art.
The rapid coring device for petroleum drilling can be further optimized or/and improved according to actual needs:
as shown in fig. 1, for convenience of use, a connector 13 is fixedly mounted at the upper end of the double male nipple 14, and a lifting nipple 2 is fixedly mounted at the upper end of the connector 13. According to the requirement, in order to facilitate the use of ropes to lift the lifting rod 1, the upper end of the lifting rod 1 extends out of the lifting pup joint 2 for a distance of 15 mm to 25 mm.
As shown in fig. 1, a spiral ring 19 is fixedly arranged in the middle of the split joint 8, a lower groove 20 with a downward opening is arranged at the lower part of the split joint 8, a clamping ring 21 is fixedly arranged at the lower end of the spiral ring 19, a boss 22 is arranged on the clamping ring 21, and the boss 22 is clamped in the lower groove 20. The boss 22 serves as an anti-rotation function.
As shown in fig. 2, a seal ring 36 is provided between the core sleeve 29 and the drill bit 12 for effective sealing.
As shown in fig. 2, for easy installation and removal, the lower end of the lifting rod 1 is fixedly installed with the connector 3 through threads, and a protection connector 27 is fixedly installed between the outer cylinder 7 and the drill bit 12 through threads.
As shown in fig. 1 and 2, in order to facilitate the installation and the disassembly, the lower end of the lifting nipple 2 is fixedly installed with the upper end of the upper joint 13 through threads, the lower end of the upper joint 13 is fixedly installed with the upper end of the double male nipple 14 through threads, the hanging nipple 4 is fixedly installed with the bearing sleeve 6 through threads, the lower end of the double male nipple 14 is fixedly installed with the upper end of the outer cylinder 7 through threads, the outer side of the lower end of the piston sleeve 9 is fixedly installed with the upper end of the inner cylinder 11 through threads, the outer side of the lower end of the inner cylinder 11 is fixedly installed with the claw sleeve joint 28 through threads, and the claw sleeve joint 28 is fixedly installed with the core claw sleeve 29 through threads.
The technical characteristics form the optimal embodiment of the invention, have stronger adaptability and optimal implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
When the sealing device is used, after the sealing liquid is filled into the wellhead, the sealing device is drilled down to the bottom of the well after the sealing liquid is assembled at the wellhead, the bottom of the well is cleaned, the lower pipe string shears the pin 32, the sealing liquid is discharged from the gap between the inner cylinder 11 and the core in an equal volume manner along with the core entering the inner cylinder 11, and the core is wrapped and prevented from being polluted by slurry. When the piston rod 10 and the piston body 23 are lifted up when the inner cylinder is blocked by the heart and the like, the sealing ring 36 is easily damaged under the action of solid-phase particles of slurry and rock debris, the steel ball 26 separates the slurry from the inner cylinder 11 to prevent the slurry from being replaced by sealing liquid, and even if the upper sealing ring 36 fails, the pressure in the inner cylinder 11 is released through the pressure release hole 24 under the action of the gravity of the steel ball 26, so that the pressure balance of the inner cylinder 11 is maintained, and the inner cylinder 11 is ensured to be sealed. And after the coring is finished, lifting the coring tool to a wellhead, mounting the elevator on the lifting nipple 2, lifting the quick coring tool, checking the claw core condition of the core claw 34, cleaning the drill bit 12 in time, lowering the tool after the processing, unloading the upper joint 13 and the double male nipple 14, and lifting the lifting rod 1 by using a rope to lift the components in the inner barrel 11 and carry out subsequent coring operation.
Claims (10)
1. The quick coring device for petroleum drilling is characterized by comprising a lifting rod, a connector, a suspension nipple, a bearing retainer ring, a bearing sleeve, an outer cylinder, a shunt joint, a piston sleeve, a piston rod, an inner cylinder, a drill bit, a double male nipple, a bearing, a piston body and a sealing ring, wherein the lower end of the lifting rod is fixedly arranged in the connector, the lower end of the double male nipple and the upper end of the outer cylinder are fixedly arranged together, the drill bit is fixedly arranged outside the lower end of the outer cylinder, the inner cylinder is positioned in the outer cylinder and the drill bit, a claw sleeve joint is fixedly arranged outside the lower end of the inner cylinder, a core claw sleeve with the inner side of the lower part in a shape of a frustum with the upper part being wide and the lower part being narrow is fixedly arranged outside the lower end of the claw sleeve, the core claw sleeve is sleeved on the wall of the drill bit in a limiting sleeve, a core claw is sleeved in the core claw sleeve, the claw top is provided with a retainer ring which is tightly propped by the claw sleeve joint, the claw sleeve joint and the inner side of the retainer ring are sleeved with a sealing body, and the sealing body and the retainer ring are connected together through pins, the sealing body lower part is fixedly provided with a sealing rod, the drill bit is provided with an axial drilling fluid circulation hole, the outer side of the upper end of the suspension nipple is provided with an annular boss, the annular boss is arranged on the upper end face of the double male nipple, the middle part of the suspension nipple is internally provided with a ring table, the lower part of the connector is sleeved in the suspension nipple above the ring table, at least one overflowing hole is radially distributed at the upper part of the connector, the upper part of the bearing sleeve is fixedly arranged at the outer side of the upper part of the suspension nipple, the upper part of the shunt connector is positioned in the suspension nipple, a bearing is arranged between the shunt connector and the bearing sleeve, the outer side of the upper end of the shunt connector is fixedly provided with a bearing baffle ring, the upper part of the shunt connector is radially distributed with at least one circulation hole along the circumference, the outer side of the lower part of the shunt connector is fixedly arranged with the inner side of the upper part of the piston sleeve, the piston body is sleeved at the inner side of the piston sleeve and is sealed by a sealing ring, at least two pressure relief holes are radially formed in the middle of a piston sleeve of the upper portion of the piston body along the circumference, a ball seat is fixedly mounted on the inner side of the lower end of the piston sleeve, a steel ball is arranged on the upper end of the ball seat, the outer side of the lower end of the piston sleeve and the upper end of the inner cylinder are fixedly mounted together, the upper portion of a piston rod is sleeved in a shunt joint, and the lower portion of the piston rod is fixedly mounted in the piston body.
2. The rapid coring device for petroleum drilling according to claim 1, wherein the upper end of the double male nipple is fixedly provided with a connector, and the upper end of the connector is fixedly provided with a lifting nipple.
3. The rapid coring device for petroleum drilling according to claim 2, wherein a spiral ring is fixedly arranged in the middle of the shunt joint, a lower groove with a downward opening is arranged at the lower part of the shunt joint, a clamping ring is fixedly arranged at the lower end of the spiral ring, a boss is arranged on the clamping ring, and the boss is clamped in the lower groove.
4. A rapid coring device for petroleum drilling according to claim 1, 2 or 3, wherein a sealing ring is arranged between the core sleeve and the drill bit.
5. The rapid coring device for petroleum drilling according to claim 1, 2 or 3, wherein the lower end of the lifting rod is fixedly mounted with the connector by screw threads, and a protection connector is fixedly mounted between the outer barrel and the drill bit by screw threads.
6. The rapid coring device for petroleum drilling according to claim 4, wherein the lower end of the lifting rod is fixedly installed with the connector through threads, and a protection connector is fixedly installed between the outer cylinder and the drill bit through threads.
7. The rapid coring device for petroleum drilling according to claim 1, 2 or 3, wherein the upper end of the double male nipple is fixedly provided with an upper joint through threads, the suspension nipple is fixedly provided with a bearing sleeve through threads, the lower end of the double male nipple is fixedly provided with an upper end of the outer cylinder through threads, the outer side of the lower end of the piston sleeve is fixedly provided with the upper end of the inner cylinder through threads, the outer side of the lower end of the inner cylinder is fixedly provided with a claw sleeve joint through threads, and the claw sleeve joint is fixedly provided with a core claw sleeve through threads.
8. The rapid coring device for petroleum drilling according to claim 4, wherein the upper end of the double male nipple is fixedly provided with an upper joint through threads, the suspension nipple is fixedly provided with a bearing sleeve through threads, the lower end of the double male nipple is fixedly provided with an upper end of the outer cylinder through threads, the outer side of the lower end of the piston sleeve is fixedly provided with the upper end of the inner cylinder through threads, the outer side of the lower end of the inner cylinder is fixedly provided with a claw sleeve joint through threads, and the claw sleeve joint is fixedly provided with a core claw sleeve through threads.
9. The rapid coring device for petroleum drilling according to claim 5, wherein the upper end of the double male nipple is fixedly provided with an upper joint through threads, the suspension nipple is fixedly provided with a bearing sleeve through threads, the lower end of the double male nipple is fixedly provided with an upper end of the outer cylinder through threads, the outer side of the lower end of the piston sleeve is fixedly provided with the upper end of the inner cylinder through threads, the outer side of the lower end of the inner cylinder is fixedly provided with a claw sleeve joint through threads, and the claw sleeve joint is fixedly provided with a core claw sleeve through threads.
10. The rapid coring device for petroleum drilling according to claim 6, wherein the upper end of the double male nipple is fixedly provided with an upper joint through threads, the suspension nipple is fixedly provided with a bearing sleeve through threads, the lower end of the double male nipple is fixedly provided with an upper end of the outer cylinder through threads, the outer side of the lower end of the piston sleeve is fixedly provided with the upper end of the inner cylinder through threads, the outer side of the lower end of the inner cylinder is fixedly provided with a claw sleeve joint through threads, and the claw sleeve joint is fixedly provided with a core claw sleeve through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810004520.8A CN108266146B (en) | 2018-01-03 | 2018-01-03 | Quick coring device for petroleum drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810004520.8A CN108266146B (en) | 2018-01-03 | 2018-01-03 | Quick coring device for petroleum drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108266146A CN108266146A (en) | 2018-07-10 |
| CN108266146B true CN108266146B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810004520.8A Active CN108266146B (en) | 2018-01-03 | 2018-01-03 | Quick coring device for petroleum drilling |
Country Status (1)
| Country | Link |
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| CN (1) | CN108266146B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617022B (en) * | 2019-10-24 | 2024-07-19 | 四川康克石油科技有限公司 | Core drilling tool with high core taking rate and working method thereof |
| CN111720084A (en) * | 2020-06-30 | 2020-09-29 | 中国石油天然气集团有限公司 | Horizontal well is shunted linkage for coring |
| CN115717511A (en) * | 2021-08-24 | 2023-02-28 | 中国石油天然气集团有限公司 | Sealed shunt suspension device for coring |
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| US6341656B1 (en) * | 1997-07-08 | 2002-01-29 | Dresser Industries, Inc. | Core barrel |
| RU2198996C2 (en) * | 2001-02-06 | 2003-02-20 | Дочернее общество с ограниченной ответственностью "Буровая компания открытого акционерного общества "ГАЗПРОМ" | Core barrel |
| RU2318981C1 (en) * | 2006-06-23 | 2008-03-10 | Андрей Васильевич Секисов | Core-taking tool |
| CN201050318Y (en) * | 2007-05-22 | 2008-04-23 | 辽河石油勘探局 | Loose ground closed core-picking tool |
| CN202381007U (en) * | 2011-12-27 | 2012-08-15 | 中国石油集团西部钻探工程有限公司 | Floating piston |
| CN105927175A (en) * | 2016-06-30 | 2016-09-07 | 中国石油集团西部钻探工程有限公司 | Locking jaw suspension type pressurized coring device |
| CN105952405A (en) * | 2016-06-30 | 2016-09-21 | 中国石油集团西部钻探工程有限公司 | Floating piston device for coring |
| CN207905750U (en) * | 2018-01-03 | 2018-09-25 | 中国石油集团西部钻探工程有限公司 | The quick coring apparatus of oil drilling |
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- 2018-01-03 CN CN201810004520.8A patent/CN108266146B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6341656B1 (en) * | 1997-07-08 | 2002-01-29 | Dresser Industries, Inc. | Core barrel |
| RU2198996C2 (en) * | 2001-02-06 | 2003-02-20 | Дочернее общество с ограниченной ответственностью "Буровая компания открытого акционерного общества "ГАЗПРОМ" | Core barrel |
| RU2318981C1 (en) * | 2006-06-23 | 2008-03-10 | Андрей Васильевич Секисов | Core-taking tool |
| CN201050318Y (en) * | 2007-05-22 | 2008-04-23 | 辽河石油勘探局 | Loose ground closed core-picking tool |
| CN202381007U (en) * | 2011-12-27 | 2012-08-15 | 中国石油集团西部钻探工程有限公司 | Floating piston |
| CN105927175A (en) * | 2016-06-30 | 2016-09-07 | 中国石油集团西部钻探工程有限公司 | Locking jaw suspension type pressurized coring device |
| CN105952405A (en) * | 2016-06-30 | 2016-09-21 | 中国石油集团西部钻探工程有限公司 | Floating piston device for coring |
| CN207905750U (en) * | 2018-01-03 | 2018-09-25 | 中国石油集团西部钻探工程有限公司 | The quick coring apparatus of oil drilling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108266146A (en) | 2018-07-10 |
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Effective date of registration: 20201106 Address after: 100120 Beijing Xicheng District six laying Kang 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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