CN116927679A - Casing centralizer with extension supporting structure - Google Patents
Casing centralizer with extension supporting structure Download PDFInfo
- Publication number
- CN116927679A CN116927679A CN202311204718.8A CN202311204718A CN116927679A CN 116927679 A CN116927679 A CN 116927679A CN 202311204718 A CN202311204718 A CN 202311204718A CN 116927679 A CN116927679 A CN 116927679A
- Authority
- CN
- China
- Prior art keywords
- support arm
- spring
- adjusting
- sleeve
- wall
- 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.)
- Pending
Links
- 210000001503 joint Anatomy 0.000 claims description 18
- 238000000034 method Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000005728 strengthening Methods 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
- E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of casing centralizers and provides a casing centralizer with an extension supporting structure, which comprises a central shaft, wherein an upper joint and a lower joint are sleeved at two ends of the central shaft respectively, adjusting screw sleeves are connected to outer walls of two ends of the central shaft and close to the upper joint and the lower joint in a threaded manner, one ends of two groups of adjusting screw sleeves are connected with spring sleeves in a threaded manner, the two groups of spring sleeves are movably sleeved on outer walls of two ends of the central shaft, one ends of the two groups of spring sleeves, which are far away from the adjusting screw sleeves, are respectively connected with a plurality of first supporting arms and a plurality of second supporting arms, a centralizing piece is arranged on each of the first supporting arms and the second supporting arms, and the first supporting arms and the second supporting arms are connected through pins; the centralizer adopts the spring to provide supporting force, and the adjusting screw sleeve is connected with the spring sleeve through threads, so that the supporting force can be adjusted by adjusting screwing length, the centralizing requirement of the expandable casing is met, the centralizer can adapt to centralizing and centering operations of different casings, and the cementing quality is improved.
Description
Technical Field
The invention relates to the technical field of casing centralizers, in particular to a casing centralizer with an extension supporting structure.
Background
Well cementation is an extremely important ring in petroleum exploration and development system engineering, well cementation quality is related to drilling speed and cost, smooth production and service life of an oil and gas well are affected, and even recovery ratio of an oil and gas reservoir is affected. Therefore, whether the downhole cementing tool is preferred or the cement slurry performance is optimized, the cementing engineering team is continuously and intensively explored on the road for improving the cementing quality. The centering of the sleeve is an important premise for ensuring the well cementation quality, and if the centering of the sleeve is poor, a plurality of problems can be brought to well cementation construction, and the well cementation quality is seriously influenced.
The casing centralizer has the function of centering the casing in the well bore, and ensuring that cement paste is uniformly solidified in an annular space formed by the casing and the well wall during well cementation, thereby improving the well cementation quality. The conventional casing centralizer fails to meet the centralizing requirements of the expandable casing. The casing centralizer hoop is designed to be of a continuous expansion structure along with the expansion of an expansion pipe, so that the casing centralizer becomes a laminated expandable casing centralizer, and the problem that the expansion pipe is centered in a well hole is solved.
For example, the prior patent (issued publication number: CN 111963078B) discloses a casing centralizer stop device, relates to oil well development technical field, including the ferrule, four openings have been seted up to the symmetry on the ferrule, sliding connection has the push rod on the opening inner wall, push rod is close to ferrule one end fixedly connected with splint, symmetrical rotation is connected with the dwang on the diapire in the opening, fixedly connected with connecting rod on the dwang, fixedly connected with first spring in the horizontal direction between connecting rod and the opening inside wall, fixedly connected with first tooth on the connecting rod is kept away from dwang one end, symmetrical fixedly connected with second tooth on the push rod, be equipped with canceling release mechanical system on the push rod. The device is sleeved on the sleeve, then the push plate is pressed to drive the push rod to move inwards to the hoop, when the push rod moves inwards to a proper position, the push rod is limited by abutting the right-angle sides of the first tooth and the second tooth, and the elastic pad moves inwards to squeeze the sleeve, so that the device is fixed on the sleeve.
However, the following problems are found in the implementation related art: the casing centralizer adopts a hoop structure, so that the centralizing requirement of the expandable casing cannot be met, the casing cannot be centered in a well hole, and the well cementation quality is seriously influenced; and the support force can not be adjusted, the use requirements of different sleeves are difficult to meet, certain use limitations exist, and design improvement is still needed. To this end, we propose a casing centralizer with an extended support structure.
Disclosure of Invention
The invention provides a casing centralizer with an extension supporting structure, and aims to solve the problems that the existing centralizer cannot meet the centralizing requirement of an expandable casing, so that the casing cannot be centered in a well hole, and the well cementation quality is seriously affected.
The technical scheme of the invention is as follows: the utility model provides a sleeve pipe centralizer with extend bearing structure, includes the center pin, the both ends of center pin are overlapped respectively and are equipped with top connection and lower clutch, on the both ends outer wall of center pin and be close to top connection and the equal threaded connection of lower clutch department have the regulation swivel nut, two sets of the equal threaded connection of one end of regulation swivel nut has the spring sleeve, two sets of the equal movable sleeve of spring sleeve is established on the both ends outer wall of center pin, and two sets of the one end that the spring sleeve kept away from the regulation swivel nut is connected with a plurality of first support arms and second support arms respectively, a plurality of the centralizing piece is all installed on first support arm and the second support arm, and through pin joint between first support arm and the second support arm.
Further, the two ends of the first support arm are uniformly connected with the butt joint, a first mounting hole is formed in the surface of the first support arm, a double butt joint is arranged at one end of the second support arm, a single butt joint is arranged at the other end of the second support arm, and a second mounting hole matched with the first mounting hole in size is formed in the surface of the second support arm.
Further, one end of the second support arm provided with a single butt joint is fixedly clamped between the butt joints on the first support arm through pins.
Further, be equipped with a plurality of engaging lugs on the one end outer wall of spring sleeve, a plurality of the engaging lug is detained and is all offered the earhole, the one end of first support arm and second support arm is all run through the fixed joint of earhole on the engaging lug through the pin.
Further, one end of the adjusting screw sleeve is provided with a screw seat, the outer surface of the screw seat is provided with external threads, the screw seat is in threaded connection with the inner side wall of the spring sleeve through the external threads, and the inner side wall of the adjusting screw sleeve is provided with internal threads.
Further, one end of the spring sleeve, which is far away from the adjusting screw sleeve, is provided with an adjusting ring, an adjusting thread is arranged on the inner side wall of the adjusting ring, the adjusting ring is connected to the outer wall of the central shaft through the adjusting thread, and one end of the adjusting ring is abutted against the spring sleeve.
Further, the righting piece is of a half-arc structure, and screw holes corresponding to the first mounting holes and the second mounting holes are formed in the surfaces of the two ends.
Further, a spring is arranged in the spring sleeve, the spring is wound on the outer wall of the central shaft, one end of the spring is abutted to the adjusting screw sleeve, and the other end of the spring is abutted to the adjusting ring.
Furthermore, a limiting ring is fixedly arranged on the outer wall of the center shaft, two groups of adjusting rings are respectively positioned on two sides of the limiting ring, and a gap of 10mm is reserved between the adjusting rings and the limiting ring.
Further, the outer wall of the central shaft is provided with a rotary thread which is matched with the internal thread and the adjusting thread.
The working principle and the beneficial effects of the invention are as follows:
1. in the invention, the following components are added: through twisting the adjusting screw sleeve at the upper end and the lower end outwards, drive two sets of spring sleeves and draw close each other respectively, drive the spring atress shrink in the spring sleeve, drive the outside extension of first support arm and the second support arm of spring sleeve one end simultaneously, thereby drive the outward diffusion of righting piece, when righting piece and sleeve pipe inner wall subsides, righting piece is adjusted and is accomplished, screw up the adjusting ring to the state with spring sleeve's tip looks butt, fix spacing to the spring sleeve, accomplish sheathed tube fixed, make the sleeve pipe center in the well bore, well cementation quality has been improved.
2. In the invention, the following components are added: the supporting arm of this centralizer under non-operating condition also accessible adjusting ring draws in with the cooperation of adjusting screw sleeve, has solved the inconvenient of bundling of transportation, satisfies expandable casing's righting requirement simultaneously, adaptable different casings and carries out righting operation, has stronger practicality.
3. In the invention, the following components are added: the semi-arc-shaped centralizing piece is used as a supporting structure to be provided with extensibility, so that the supporting structure can be tightly attached to the inner wall of the sleeve in the expanding process, the supporting strength is improved, the supporting arm is adjusted by means of the adjusting ring and the adjusting screw sleeve, the centralizing piece is arranged on the supporting arm, when the centralizing piece is attached to the inner wall of the sleeve, the centralizing piece plays a role in centralizing, after the centralizing piece is worn, the centralizing piece can be detached by means of detachable threaded installation, the centralizing piece is replaced with a new centralizing piece, and the service life of the centralizing piece can be prolonged.
4. In the invention, the following components are added: the centralizer adopts the spring to provide supporting force, the adjusting screw sleeve is connected with the spring sleeve through threads, the compression amount of the spring is directly influenced by the screwing length of the threads, and therefore the supporting force can be adjusted by adjusting the screwing length.
5. In the invention, the following components are added: the centralizer can be used in the logging process of acoustic wave instruments, has a measuring range adjusting function, can meet the requirements of different wellbores, has a wider application range, and can adjust the pushing force according to the length and the weight of instrument strings.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a spring assembly according to the present invention;
FIG. 3 is a schematic view of the first support arm and the second support arm according to the present invention;
FIG. 4 is a schematic view of a spring sleeve according to the present invention;
fig. 5 is a schematic structural view of an adjusting screw sleeve according to the present invention;
FIG. 6 is a schematic view of a structure of an adjusting ring according to the present invention;
FIG. 7 is a schematic structural view of a centralizer sheet according to the present invention;
FIG. 8 is a schematic view of a central shaft according to the present invention;
FIG. 9 is a schematic illustration of a front cross-sectional structure according to the present invention;
in the figure: 1. a central shaft; 2. an upper joint; 3. a lower joint; 4. a spring sleeve; 401. a connecting ear clip; 402. ear holes; 5. adjusting the screw sleeve; 501. a screw seat; 502. an external thread; 503. an internal thread; 6. a first support arm; 601. butt joint; 602. a first mounting hole; 7. a second support arm; 701. a double butt joint; 702. a single pair of joints; 703. a second mounting hole; 8. a strengthening tablet; 801. a screw hole; 9. an adjusting ring; 901. adjusting the screw thread; 10. a spring; 11. a pin; 12. rotating the thread; 13. and a limiting ring.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, the present invention provides a technical solution: the utility model provides a sleeve pipe centralizer with extend bearing structure, including center pin 1, the both ends of center pin 1 are overlapped respectively and are equipped with top connection 2 and lower clutch 3, on the both ends outer wall of center pin 1 and be close to top connection 2 and lower clutch 3 department equal threaded connection have the regulation swivel nut 5, the equal threaded connection of one end of two sets of regulation swivel nuts 5 has spring sleeve 4, the equal movable sleeve of two sets of spring sleeve 4 is established on the both ends outer wall of center pin 1, and the one end that two sets of spring sleeve 4 kept away from regulation swivel nut 5 is connected with a plurality of first support arm 6 and second support arm 7 respectively, all install on a plurality of first support arm 6 and the second support arm 7 and right piece 8, and connect through pin 11 between first support arm 6 and the second support arm 7.
In the invention, two ends of a first support arm 6 are uniformly connected with a butt joint 601, a first mounting hole 602 is formed in the surface of the first support arm 6, a double butt joint 701 is formed at one end of a second support arm 7, a single butt joint 702 is formed at the other end of the second support arm 7, a second mounting hole 703 which is matched with the first mounting hole 602 in size is formed in the surface of the second support arm 7, one end of the second support arm 7, which is provided with the single butt joint 702, is fixedly clamped between the butt joints 601 on the first support arm 6 through a pin 11, a plurality of connecting lugs 401 are formed on the outer wall of one end of a spring sleeve 4, lugs 402 are formed on the connecting lugs 401, and one ends of the first support arm 6 and the second support arm 7 are fixedly clamped on the connecting lugs 401 through the lugs 402 through pins 11; the support arm under the non-working condition can be folded through the cooperation of the adjusting ring 9 and the adjusting screw sleeve 5, so that the inconvenience in transportation is solved, the centralizing requirement of the expandable casing is met, the support arm can adapt to centralizing operations of different casings, the practicability is high, and the well cementation quality is improved.
In the invention, one end of an adjusting screw sleeve 5 is provided with a screw seat 501, the outer surface of the screw seat 501 is provided with an external screw thread 502, the screw seat 501 is in threaded connection with the inner side wall of a spring sleeve 4 through the external screw thread 502, the inner side wall of the adjusting screw sleeve 5 is provided with an internal screw thread 503, one end of the spring sleeve 4 far away from the adjusting screw sleeve 5 is provided with an adjusting ring 9, the inner side wall of the adjusting ring 9 is provided with an adjusting screw thread 901, the adjusting ring 9 is in threaded connection with the outer wall of a central shaft 1 through the adjusting screw thread 901, and one end of the adjusting ring 9 is abutted against the spring sleeve 4; through twisting the adjusting screw sleeve 5 at the upper end and the lower end outwards, drive two sets of spring sleeve 4 and draw close each other respectively, drive the spring 10 atress shrink in the spring sleeve 4, simultaneously drive the first support arm 6 and the outside extension of second support arm 7 of spring sleeve 4 one end, thereby drive righting piece 8 out diffusion, when righting piece 8 and sleeve inner wall subsides, righting piece 8 adjusts and accomplishes, screw up adjusting ring 9 to the state with the tip looks butt of spring sleeve 4, fix spacing to spring sleeve 4, accomplish sheathed tube fixation, make the sleeve center in the borehole, the support arm under non-operating condition also accessible adjusting ring 9 draws in with the cooperation of adjusting screw sleeve 5, the inconvenient of bundling of transportation has been solved, adaptable different sleeve sizes carries out the operation of righting simultaneously, have stronger practicality.
In the invention, the righting piece 8 is of a half-arc structure, and screw holes 801 corresponding to the positions of the first mounting holes 602 and the second mounting holes 703 are formed on the surfaces of two ends; the semi-arc supporting structure has extensibility, can guarantee to closely laminate with the sleeve inner wall in the extension process, is favorable to improving supporting strength, and the regulation of its support arm relies on adjusting ring 9 and adjusting swivel nut 5 to adjust, installs on the support arm and rights piece 8, and when righting piece 8 and sleeve inner wall laminating, the centralizer plays the righting effect, and after righting piece 8 is worn and torn, utilizes detachable screw thread to install, and the righting piece can be dismantled, changes new righting piece, can increase the life-span of centralizer.
In the invention, a spring 10 is arranged in a spring sleeve 4, the spring 10 is wound on the outer wall of a central shaft 1, one end of the spring 10 is abutted with an adjusting screw sleeve 5, and the other end of the spring is abutted with an adjusting ring 9; the centralizer adopts the spring 10 to provide supporting force, the adjusting screw sleeve 5 is connected with the spring sleeve 4 through threads, the compression amount of the spring is directly influenced by the screwing length, and therefore the supporting force can be adjusted by adjusting the screwing length.
In the invention, the outer wall of the central shaft 1 is provided with a rotary thread 12 which is matched with the internal thread 503 and the adjusting thread 901, the outer wall of the center of the central shaft 1 is fixedly provided with a limiting ring 13, two groups of adjusting rings 9 are respectively positioned at two sides of the limiting ring 13, and a gap of 10mm is reserved between the two groups of adjusting rings 9 and the limiting ring 13; through reserving the space of 10mm, the well wall collision process can play a good buffering role due to the existence of spring force, and underground components can be well protected.
The working principle and the using flow of the invention are as follows: according to the casing centralizer with the extension supporting structure, in the use process, the adjusting screw sleeves 5 at the upper end and the lower end are screwed outwards to drive the two groups of spring sleeves 4 to be respectively close to each other, so that springs 10 in the spring sleeves 4 are driven to be stressed and contracted, meanwhile, a first supporting arm 6 and a second supporting arm 7 at one end of the spring sleeve 4 are driven to extend outwards, so that a centralizing piece 8 is driven to diffuse outwards, when the centralizing piece 8 is attached to the inner wall of a casing, the centralizing piece 8 is adjusted, an adjusting ring 9 is screwed to be in a state of being abutted against the end parts of the spring sleeves 4, the spring sleeves 4 are fixed and limited, and the casing is fixed, so that the casing is centered in a well hole; the semi-arc supporting structure has extensibility, can ensure that the supporting structure is tightly attached to the inner wall of the sleeve in the expanding process, is beneficial to improving the supporting strength, the supporting arm is adjusted by virtue of the adjusting ring 9 and the adjusting screw sleeve 5, the supporting arm is provided with the righting piece 8, and when the righting piece 8 is attached to the inner wall of the sleeve, the righting device plays a role in righting; the support arm under the non-working condition can be folded through the cooperation of the adjusting ring 9 and the adjusting screw sleeve 5, so that the inconvenience in transportation is solved, the centralizing requirement of the expandable casing is met, the support arm can adapt to centralizing operations of different casings, the practicability is high, and the well cementation quality is improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. A casing centralizer with an extended support structure, comprising a central shaft (1), characterized in that: the utility model discloses a centering device for the automobile, including center pin (1), support arm (7), right piece (8) are all installed to the equal threaded connection in both ends cover of center pin (1) on the both ends outer wall of center pin (1) and be close to top connection (2) and bottom connection (3) department, two sets of the equal threaded connection of one end of adjusting swivel nut (5) has spring sleeve (4), two sets of spring sleeve (4) all movable sleeve establishes on the both ends outer wall of center pin (1), and two sets of spring sleeve (4) keep away from the one end of adjusting swivel nut (5) and be connected with a plurality of first support arm (6) and second support arm (7) respectively, a plurality of right piece (8) are all installed on first support arm (6) and second support arm (7), and connect through pin (11) between first support arm (6) and second support arm (7).
2. A casing centralizer having an extended support structure according to claim 1, wherein: the two ends of the first support arm (6) are uniformly connected with the butt joint (601), a first mounting hole (602) is formed in the surface of the first support arm (6), one end of the second support arm (7) is provided with a double butt joint (701), the other end of the second support arm is provided with a single butt joint (702), and a second mounting hole (703) which is identical to the first mounting hole (602) in size is formed in the surface of the second support arm (7).
3. A casing centralizer having an extended support structure according to claim 2, wherein: one end of the second support arm (7) provided with a single butt joint (702) is fixedly clamped between the butt joints (601) on the first support arm (6) through pins (11).
4. A casing centralizer having an extended support structure according to claim 1, wherein: be equipped with a plurality of connection earrings (401) on the one end outer wall of spring sleeve (4), a plurality of all seted up on connection earrings (401) earrings (402), the one end of first support arm (6) and second support arm (7) is all run through earrings (402) fixed joint on connection earrings (401) through pin (11).
5. A casing centralizer having an extended support structure according to claim 1, wherein: one end of the adjusting screw sleeve (5) is provided with a screw seat (501), the outer surface of the screw seat (501) is provided with an external screw thread (502), the screw seat (501) is in threaded connection with the inner side wall of the spring sleeve (4) through the external screw thread (502), and the inner side wall of the adjusting screw sleeve (5) is provided with an internal screw thread (503).
6. A casing centralizer having an extended support structure according to claim 1, wherein: the one end that adjustment swivel nut (5) was kept away from to spring sleeve (4) is equipped with adjusting ring (9), be equipped with adjusting screw thread (901) on the inside wall of adjusting ring (9), adjusting ring (9) are on the outer wall of center pin (1) through adjusting screw thread (901) threaded connection, and the one end and the spring sleeve (4) looks butt of adjusting ring (9).
7. A casing centralizer having an extended support structure according to claim 1, wherein: the centralizing piece (8) is of a half-arc structure, and screw holes (801) corresponding to the first mounting holes (602) and the second mounting holes (703) are formed in the surfaces of the two ends.
8. A casing centralizer having an extended support structure according to claim 1, wherein: the spring sleeve (4) is internally provided with a spring (10), the spring (10) is wound on the outer wall of the central shaft (1), one end of the spring is abutted with the adjusting screw sleeve (5), and the other end of the spring is abutted with the adjusting ring (9).
9. A casing centralizer having an extended support structure according to claim 6, wherein: the central shaft (1) is fixedly provided with a limiting ring (13) on the outer wall of the center, the two groups of adjusting rings (9) are respectively positioned on two sides of the limiting ring (13), and a gap of 10mm is reserved between the adjusting rings and the limiting ring (13).
10. A casing centralizer having an extended support structure according to claim 1, wherein: the outer wall of the central shaft (1) is provided with a rotary thread (12) which is matched with the internal thread (503) and the adjusting thread (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311204718.8A CN116927679A (en) | 2023-09-19 | 2023-09-19 | Casing centralizer with extension supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311204718.8A CN116927679A (en) | 2023-09-19 | 2023-09-19 | Casing centralizer with extension supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116927679A true CN116927679A (en) | 2023-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311204718.8A Pending CN116927679A (en) | 2023-09-19 | 2023-09-19 | Casing centralizer with extension supporting structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN116927679A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119041846A (en) * | 2024-11-04 | 2024-11-29 | 河间市惠东钻采配件有限公司 | Well cementation bow-shaped sleeve centralizer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO941423D0 (en) * | 1993-04-20 | 1994-04-19 | Conoco Inc | Method and apparatus for centering a tube in a wellbore |
| CN202483550U (en) * | 2011-10-25 | 2012-10-10 | 西安威盛电子仪器有限公司 | Multi-arm spring type roller centralizer |
| CN109113685A (en) * | 2018-10-19 | 2019-01-01 | 中石化石油工程技术服务有限公司 | Horizontal well conveys tractor perforation tool |
| CN213573952U (en) * | 2021-06-03 | 2021-06-29 | 东营中昶能源科技有限公司 | Underground compression type centralizer |
| CN216950271U (en) * | 2022-03-25 | 2022-07-12 | 天津世纪华源地环科技有限公司 | Underground pipe column centralizer for well drilling |
-
2023
- 2023-09-19 CN CN202311204718.8A patent/CN116927679A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO941423D0 (en) * | 1993-04-20 | 1994-04-19 | Conoco Inc | Method and apparatus for centering a tube in a wellbore |
| CN202483550U (en) * | 2011-10-25 | 2012-10-10 | 西安威盛电子仪器有限公司 | Multi-arm spring type roller centralizer |
| CN109113685A (en) * | 2018-10-19 | 2019-01-01 | 中石化石油工程技术服务有限公司 | Horizontal well conveys tractor perforation tool |
| CN213573952U (en) * | 2021-06-03 | 2021-06-29 | 东营中昶能源科技有限公司 | Underground compression type centralizer |
| CN216950271U (en) * | 2022-03-25 | 2022-07-12 | 天津世纪华源地环科技有限公司 | Underground pipe column centralizer for well drilling |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119041846A (en) * | 2024-11-04 | 2024-11-29 | 河间市惠东钻采配件有限公司 | Well cementation bow-shaped sleeve centralizer |
| CN119041846B (en) * | 2024-11-04 | 2025-02-14 | 河间市惠东钻采配件有限公司 | Well cementation bow-shaped sleeve centralizer |
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Application publication date: 20231024 |