CN218862569U - Device for destroying cement ring outside sleeve - Google Patents
Device for destroying cement ring outside sleeve Download PDFInfo
- Publication number
- CN218862569U CN218862569U CN202222961499.5U CN202222961499U CN218862569U CN 218862569 U CN218862569 U CN 218862569U CN 202222961499 U CN202222961499 U CN 202222961499U CN 218862569 U CN218862569 U CN 218862569U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- cylinder
- ring
- breaking
- limiting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004568 cement Substances 0.000 title claims abstract description 25
- 230000006378 damage Effects 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 10
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 10
- 241001330002 Bambuseae Species 0.000 abstract description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 10
- 239000011425 bamboo Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003129 oil well Substances 0.000 description 5
- 230000008439 repair process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The utility model provides a casing pipe outer cement ring destruction device, include: the main shaft is provided with an inner hole, a flow passage hole is formed in the main shaft, an inner groove is formed in the outer wall of the main shaft, and the inner groove is communicated with the inner hole through the flow passage hole; the telescopic assembly is movably arranged in the inner groove in a sealing manner along the radial direction of the main shaft; and the destroying cylinder is sleeved on the main shaft in a clearance manner and is fixedly connected with the telescopic assembly. The utility model discloses a pump pressure injection to the main shaft in, make the thrust piece extend along the radial outside towards of main shaft to drive and destroy a section of thick bamboo radial movement, make and destroy a section of thick bamboo butt sleeve pipe, after rotating the main shaft, the point of destroying a section of thick bamboo and sleeve pipe butt can be followed circumference and constantly shifted the position, forms radial outside circumference power to the sleeve pipe, and under the effect of this circumference power, the cement ring emergence fracture outside the sleeve pipe.
Description
Technical Field
The utility model belongs to the technical field of the well drilling is maintained, specifically, relate to a casing pipe outer cement ring destruction device.
Background
In the oil and gas industry, workover operations penetrate through the whole process of oil and gas field development and are the core of daily production, optimization and maintenance of oil, gas and water wells. Workover is an important link for maintaining normal operation, stable production and production increase of oil and gas fields. Casing is a necessary condition for ensuring normal production of oil and gas wells, and the casing can be damaged due to various reasons in the oil well, so that the repair of the oil well casing is one of the main contents in well repair operation. The casing damage mainly has the following conditions: firstly, the diameter of the casing is reduced, namely the inner diameter of the casing of the oil well is reduced, so that a downhole tool cannot normally pass through the casing, and the oil well cannot normally produce oil; secondly, casing rupture, namely the casing of the oil well is ruptured to form a seam or a hole, so that a great amount of stratum sand flows into the well, and the oil-gas well stops production; thirdly, the sleeves are staggered and disconnected, some sleeves can be broken, and the upper fracture and the lower fracture are staggered. At this point, the casing needs to be repaired, during which repair a new casing is often replaced, which requires cutting and replacement of the casing in the well, but cutting and removal of the casing is very difficult and requires a lot of time since the casing has been cemented.
SUMMERY OF THE UTILITY MODEL
To the technical problem as above, the utility model aims at providing a cement ring destruction device outside sleeve pipe, it can make the outer cement ring fracture of sleeve pipe before the cutting sleeve pipe, facilitates for subsequent cutting sleeve pipe work.
According to the utility model discloses, a casing pipe outer cement ring breaker is provided, include: a casing outer cement ring breaking device is characterized by comprising: the spindle is provided with an inner hole, a flow passage hole is formed in the spindle, an inner groove is formed in the outer wall of the spindle, and the inner groove is communicated with the inner hole through the flow passage hole; the telescopic assembly is movably and hermetically arranged in the inner groove along the radial direction of the main shaft; and the damage cylinder is sleeved on the main shaft in a clearance type manner and is fixedly connected with the telescopic assembly.
In a particular embodiment, the retraction assembly includes a thrust block sealingly disposed radially within the inner groove and a transmission body coupled between the destruction cartridge and the thrust block.
In a specific embodiment, two groups of limiting assemblies are further sleeved on the main shaft, and the two groups of limiting assemblies are respectively contacted with the upper end surface and the lower end surface of the damage cylinder.
In a specific embodiment, the limiting assembly comprises a limiting barrel used for limiting the axial movement of the destroying barrel and a fixing clamping ring used for fixing the limiting barrel, and the fixing clamping ring is arranged at one end of the limiting barrel, which is far away from the destroying barrel.
In a specific embodiment, a pressing ring and a supporting ring are further arranged between the limiting cylinder and the damage cylinder, the pressing ring is fixedly connected with the limiting cylinder, the supporting ring is fixedly connected with the damage cylinder, the pressing ring and the supporting ring are in mutual sliding abutting joint, and the inner diameter of the supporting ring is larger than the outer diameter of the main shaft.
In a specific embodiment, a centering sleeve is further sleeved on the main shaft.
In a specific embodiment, the number of the centering sleeves is two, and the centering sleeves are respectively and fixedly connected with the main shaft through two groups of limiting assemblies.
In a specific embodiment, a step is arranged on the limiting cylinder, the centering sleeve is sleeved on the limiting cylinder, one end of the centering sleeve abuts against the step, and the other end of the centering sleeve abuts against the fixed snap ring.
In a specific embodiment, an upper joint and a lower joint are respectively and fixedly arranged at the upper end and the lower end of the main shaft.
In a specific embodiment, a positioning sleeve is arranged between the lower joint and a fixing clamping ring of the limiting assembly positioned below the damage cylinder, and the positioning sleeve is fixed through the fixing clamping ring.
Compared with the prior art, the method has the following advantages.
The utility model discloses a to main shaft internal pump pressure of annotating, make thrust block extend along the radial outside towards of main shaft to drive and destroy a section of thick bamboo radial movement, make and destroy a section of thick bamboo butt sleeve pipe, after rotating the main shaft, destroy a section of thick bamboo and the continuous transform position of point along circumference of sleeve pipe butt, form radial outside circumference power to the sleeve pipe, under the effect of this circumference power, the cement ring emergence fracture outside the sleeve pipe. The strength of the force for abutting the breaking cylinder and the sleeve can be controlled by the size of the pump injection pressure, and the operation is convenient. And simultaneously, the utility model discloses exert radial force, do not have harmful effects to the well depth structure.
Drawings
The present invention will be described with reference to the accompanying drawings.
Fig. 1 shows a schematic view of an embodiment of the device for breaking an outer cement ring of a casing according to the present invention.
In the figure: 1. a main shaft; 10. an inner bore; 11. a flow passage hole; 12. an inner tank; 2. a telescoping assembly; 21. a thrust block; 22. a transmission block; 3. destroying the cartridge; 4. a limiting component; 41. a limiting cylinder; 411. a step; 42. fixing the snap ring; 421. a stepped groove; 43. a compression ring; 44. a support ring; 5. a centralizing sleeve; 6. an upper joint; 7. a lower joint; 8. a positioning sleeve; 91. a set screw; 92. and fixing the pin.
In the present application, all the figures are schematic and are only intended to illustrate the principles of the present invention and are not drawn to scale.
Detailed Description
The present invention will be described with reference to the accompanying drawings.
In this application, it should be noted that the direction towards the well head after entering the well according to the present invention is described as "up" or the like, i.e. above in fig. 1, while the direction away from the well head is described as "down" or the like, i.e. below in fig. 1.
Fig. 1 shows the structure of an external casing cement ring breaking device 100 according to the present invention. As shown in fig. 1, the outside casing cement ring breaking device 100 includes a main shaft 1 provided with an inner bore 10, a telescopic assembly 2 and a breaking cylinder 3. An inner rectangular groove 12 is formed in an outer wall of the main shaft 1, and a flow passage hole 11 for communicating the inner hole 10 with the inner groove 12 is formed in the main shaft 1. The telescopic assembly 2 is sealingly arranged in the inner groove 12 in a radially movable manner along the main shaft 1. The inner diameter of the damage cylinder 3 is larger than the outer diameter of the main shaft 1, so that the main shaft 1 is sleeved with the damage cylinder 3 in a clearance mode, and meanwhile, the damage cylinder 3 is fixedly connected with the telescopic assembly 2. When the telescopic assembly 2 does not extend out of the inner groove 12, the central axis of the breaking cylinder 3 coincides with the central axis of the main shaft 1. Under this kind of setting, in the operation in-process, will the utility model discloses transfer in the sleeve pipe in the pit, after putting the sheathed tube position of needs cutting, to 1 inside pump injection pressure of main shaft, under the squeezing action of pressure, flexible subassembly 2 stretches out along 1 radial outside of main shaft, makes the central axis of the skew main shaft 1 of the central axis of destroying a section of thick bamboo 3, makes the outer wall radial contact sleeve pipe of destroying a section of thick bamboo 3 to produce radial effort to the sleeve pipe. At this time, torque is transmitted to the main shaft 1, and the main shaft 1 rotates to rotate the destruction cylinder 3 around the center axis of the main shaft 1. Because the outer wall of the breaking cylinder 3 has an abutting acting force on the casing, when the breaking cylinder 3 rotates around the central axis of the main shaft 1, a radial outward circumferential acting force is formed on the casing, and under the action of the circumferential acting force, a cement sheath outside the casing is broken.
In this embodiment, the structure that the annular breaking cylinder 3 is sleeved on the main shaft 1 can limit the range of radial movement of the breaking cylinder 3 and the telescopic assembly 2, and prevent the telescopic assembly 2 from separating from the main shaft 1.
In a particular embodiment, the telescopic assembly 2 comprises a thrust block 21 and a transmission body 22. The thrust block 21 has a thickness equal to that of the inner groove 12 and is sealingly and movably disposed in the inner groove 12 in a radial direction. Transmission body 22 is connected between breaking cylinder 3 and thrust block 21, so that breaking cylinder 3 with a larger inner diameter can be arranged coaxially with main shaft 1. Specifically, transmission body 22 is fixedly provided on thrust block 21 by a set screw 91, and the destruction cylinder and transmission body 22 are fixedly connected by a fixing pin 92. Through this arrangement, installation and removal are facilitated.
In a preferred embodiment, two sets of limiting assemblies 4 are hermetically sleeved on the main shaft 1, and the two sets of limiting assemblies 4 are respectively arranged on the upper side and the lower side of the damage cylinder 3 and are respectively contacted with the upper end surface and the lower end surface of the damage cylinder 3. Through this kind of setting, prevent to destroy a 3 in-process at work because of unexpected longitudinal movement, the condition of cutting fixed pin 92 or holding screw 91 takes place, strengthens the utility model discloses a practicality.
Wherein, the limiting component 4 comprises a limiting cylinder 41 used for limiting the axial movement of the destroying cylinder 3 and a fixing snap ring 42 used for fixing the limiting cylinder 41. A sealing element (not shown in the figure) is arranged between the limiting cylinder 41 and the spindle 1, and a fixing snap ring 42 is arranged at one end of the limiting cylinder 41 far away from the damage cylinder 3. Specifically, the fixed snap ring 42 is fixedly connected with the main shaft 1, a stepped groove 421 is formed in the inner wall of one side, close to the limiting cylinder 41, of the fixed snap ring 42, and the upper end portion of the limiting cylinder 41 is inserted into the stepped groove 421.
In a preferred embodiment, a compression ring 43 and a support ring 44 are also provided between the restraining cylinder 41 and the destruction cylinder 3. The compression ring 43 is fixedly connected with the limiting cylinder 41, the support ring 44 is fixedly connected with the breaking cylinder 3, the compression ring 43 and the support ring 44 are in sealed sliding abutting connection, and the inner diameter of the support ring 44 is larger than the outer diameter of the spindle 1. Specifically, one end of the compression ring 43 is arranged in a step shape, the other end of the compression ring 43 is a plane, and the end of the compression ring 43 arranged in the step shape is used for being connected with the limiting cylinder 41, that is, the end of the limiting cylinder 41 used for being connected with the compression ring 43 is also arranged in the step shape. The support ring 44 is fixedly connected to the destruction cartridge 3 by a fixing member (not shown), and a seal (not shown) is provided between the support ring 44 and the destruction cartridge 3. By providing the compression ring 43 and the support ring 44, direct relative friction between the destruction cartridge 3 and the position limiting cartridge 41 is avoided, thereby prolonging the service life of the destruction cartridge 3.
In a preferred embodiment, a centering sleeve 5 is also sleeved on the main shaft 1. In this embodiment, the number of the centering sleeves 5 is two, and the two centering sleeves are respectively fixedly sleeved on the limiting component 4. Specifically, a step 411 is arranged at one end of the limiting cylinder 41 close to the destroying cylinder 3, so that an accommodating space for accommodating the centering sleeve 5 is formed between the step 411 and the fixing snap ring 42. After the holding space of the fixing snap ring 42 is sleeved with the centering sleeve 5, one end of the centering sleeve is in contact with the fixing snap ring 42, and the other end of the centering sleeve is in contact with the step 411. In this way, on the one hand, make full use of space only uses a fixed snap ring 42 just can fix simultaneously and rights cover 5 and spacing section of thick bamboo 41, makes the utility model discloses a compact structure shortens the length of main shaft 1. On the other hand, set up and be in righting cover 5 the utility model discloses a except destroying a section of thick bamboo 3, the biggest position of external diameter, it is best to right the effect.
According to the utility model discloses, be provided with top connection 6 and lower clutch 7 through the thread tightening respectively at the upper and lower both ends of main shaft 1. Both the upper joint 6 and the lower joint 7 are used for connection to other downhole tools. Wherein, a positioning sleeve 8 is arranged between the lower joint 7 and a fixing snap ring 42 of the limiting component 4 positioned below the destroying cylinder 3. The positioning sleeve 8 is fixed by a fixing snap ring 42, one end of the positioning sleeve abuts against the fixing snap ring 42, and the other end abuts against the lower joint 7.
In the operation process, the device 100 for destroying the cement ring outside the casing is placed in the casing in the well, after the casing is placed to the designed depth position, the pump pressure is increased, so that the medium flows into the rectangular inner groove 12 through the flow passage hole 11 in the main shaft 1, the thrust block 21 is applied with radial thrust, the thrust block 21 is pushed to move outwards, the transmission block 22 is driven to shift outwards, the destruction cylinder 3 and the support ring 44 are driven to shift outwards together, and the shift distance enables the destruction cylinder 3 to be in contact with the inner wall of the casing. The side of the breakdown cylinder 3 corresponding to the thrust piece 21 is offset in the direction of the central axis. At this time, the torque is applied to the main shaft 1, and the cement sheath outside the sleeve can be damaged. When the operation is completed, the pump pressure is restored to the initial state, the redundant medium in the rectangular inner groove 12 enters the inner hole again through the passage hole 11, and the thrust block 21 returns to the initial position to drive the destruction cylinder 3 to restore the initial state together.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and should not be construed as limiting the present invention in any way. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A casing outer cement ring breaking device is characterized by comprising:
the spindle comprises a spindle (1) with an inner hole, wherein a flow passage hole (11) is formed in the spindle (1), an inner groove (12) is formed in the outer wall of the spindle (1), and the inner groove (12) is communicated with the inner hole through the flow passage hole (11);
the telescopic assembly (2) is movably and hermetically arranged in the inner groove (12) along the radial direction of the main shaft (1);
the damage cylinder (3) is sleeved on the main shaft (1) in a clearance type manner, and is fixedly connected with the telescopic assembly (2).
2. The device according to claim 1, characterized in that said telescopic assembly (2) comprises thrust blocks (21) and a transmission body (22), said thrust blocks (21) being sealingly and radially movable arranged inside said inner tank (12), said transmission body (22) being connected between said breaking cylinder (3) and said thrust blocks (21).
3. The device for destroying the cement ring outside the casing according to the claim 1 or 2, wherein two groups of limiting components (4) are further sleeved on the main shaft (1), and the two groups of limiting components (4) are respectively contacted with the upper end surface and the lower end surface of the destroying cylinder (3).
4. The device for breaking the extra-casing cement ring according to the claim 3, characterized in that the limiting assembly (4) comprises a limiting cylinder (41) for limiting the axial movement of the breaking cylinder (3) and a fixing snap ring (42) for fixing the limiting cylinder (41), wherein the fixing snap ring (42) is arranged at one end of the limiting cylinder (41) far away from the breaking cylinder (3).
5. The device for breaking the cement ring outside the casing according to claim 4, wherein a pressing ring (43) and a supporting ring (44) are further arranged between the limiting cylinder (41) and the breaking cylinder (3), the pressing ring (43) is fixedly connected with the limiting cylinder (41), the supporting ring (44) is fixedly connected with the breaking cylinder (3), the pressing ring (43) and the supporting ring (44) are in sliding abutting joint with each other, and the inner diameter of the supporting ring (44) is larger than the outer diameter of the main shaft (1).
6. The device for breaking the cement ring outside the casing according to the claim 5, characterized in that a centering sleeve (5) is also sleeved on the main shaft (1).
7. The device for breaking the cement ring outside the casing according to claim 6, wherein the number of the centralizing sleeves (5) is two, and the centralizing sleeves are respectively fixedly connected with the main shaft (1) through two groups of limiting assemblies (4).
8. The device for breaking the cement ring outside the casing according to claim 7, wherein a step (411) is arranged on the limiting cylinder (41), the centering sleeve (5) is sleeved on the limiting cylinder (41), one end of the centering sleeve (5) abuts against the step (411), and the other end of the centering sleeve (5) abuts against the fixed snap ring (42).
9. The device for breaking the cement ring outside the casing according to claim 8, wherein an upper joint (6) and a lower joint (7) are respectively and fixedly arranged at the upper end and the lower end of the main shaft (1).
10. The device for breaking the cement ring outside the casing according to claim 9, wherein a positioning sleeve (8) is arranged between the lower joint (7) and the fixing snap ring (42), and the positioning sleeve (8) is fixed by the fixing snap ring (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222961499.5U CN218862569U (en) | 2022-11-07 | 2022-11-07 | Device for destroying cement ring outside sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222961499.5U CN218862569U (en) | 2022-11-07 | 2022-11-07 | Device for destroying cement ring outside sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218862569U true CN218862569U (en) | 2023-04-14 |
Family
ID=87350063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222961499.5U Active CN218862569U (en) | 2022-11-07 | 2022-11-07 | Device for destroying cement ring outside sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218862569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025011023A1 (en) * | 2023-07-07 | 2025-01-16 | 博德世达（天津）能源科技有限公司 | Variable-frequency hammer casing cement sheath crusher |
-
2022
- 2022-11-07 CN CN202222961499.5U patent/CN218862569U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025011023A1 (en) * | 2023-07-07 | 2025-01-16 | 博德世达（天津）能源科技有限公司 | Variable-frequency hammer casing cement sheath crusher |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3945446A (en) | Stabilizer for drill strings | |
| CA2142375C (en) | Cement head quick connector | |
| US3998479A (en) | Dual conduit drill stem member and connection | |
| DK180668B1 (en) | Expandable seal | |
| CN114876395B (en) | Cement ring eccentric rolling extrusion crushing tool for recycling long-service-life auxiliary sleeve | |
| CN218862569U (en) | Device for destroying cement ring outside sleeve | |
| US20150259997A1 (en) | Torque Anchor to Prevent Rotation of Well Production Tubing, System for Pumping and Rotation Prevention, and Pumping Installation Equipped with Such a Torque Anchor | |
| CN110331949B (en) | Variable diameter stabilizer for well drilling | |
| CN110617026B (en) | Downhole operation device and method | |
| CN105350934B (en) | A kind of oil field drilling and repairing well annular preventer | |
| CN201496025U (en) | Hydraulic rotary well plugging device | |
| US5275441A (en) | Blast joint with torque transferring connector | |
| CN108868689B (en) | Tail pipe rubber plug device for removing cement paste in sleeve at lower part of tail pipe well cementation choke ring | |
| CN211666689U (en) | Composite bridge plug | |
| CN110847845A (en) | But two-way slips recovery type hydraulic pressure packer | |
| CN104963640A (en) | Horizontal well coiled tubing lock type hydraulic bit feeding and alarming system | |
| CN111749643B (en) | Integrated drillable squeezing bridge plug | |
| CN209212198U (en) | For taking the quick connection wellhead assembly of set operation | |
| CN118029930A (en) | Cement ring destruction device outside sleeve | |
| CN111734350A (en) | Separating valve capable of being opened and closed repeatedly | |
| CN219840594U (en) | Well feeding tool | |
| CN222633181U (en) | Anti-lock drilling tool for coiled tubing operation | |
| CN220133916U (en) | Mechanical axial impactor device for drilling and repairing well | |
| CN219316926U (en) | Failure-proof oil extraction device for cannula oil extraction well | |
| CN221546893U (en) | Drilling mud circulation wellhead device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240118 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec Petroleum Engineering Technology Service Co.,Ltd. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY Research Institute Address before: 257017 No. 827, Beiyi Road, Dongying District, Dongying City, Shandong Province Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY Research Institute |