CN113266286A - Underground oil rod rotary clamping centralizer and using method thereof - Google Patents
Underground oil rod rotary clamping centralizer and using method thereof Download PDFInfo
- Publication number
- CN113266286A CN113266286A CN202110803590.1A CN202110803590A CN113266286A CN 113266286 A CN113266286 A CN 113266286A CN 202110803590 A CN202110803590 A CN 202110803590A CN 113266286 A CN113266286 A CN 113266286A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- sucker rod
- centralizer
- rotating
- fixedly connected
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000010687 lubricating oil Substances 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 239000003921 oil Substances 0.000 claims description 17
- 230000001050 lubricating effect Effects 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000005461 lubrication Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B17/1071—Wear protectors; Centralising devices, e.g. stabilisers specially adapted for pump rods, e.g. sucker rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (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 sucker rod rotating and clamping centralizers, and particularly discloses an underground sucker rod rotating and clamping centralizer and a using method thereof, wherein the centralizer comprises a centralizing outer sleeve, a sucker rod and a fixed shaft, the bottom end of the sucker rod is provided with a connecting assembly, the outer surface of the fixed shaft is fixedly connected with a rotating assembly, the connecting assembly comprises a positioning plate positioned on the fixed shaft, the top of the positioning plate is fixedly connected with a positioning sleeve, the peripheral surface of the positioning sleeve is fixedly connected with a plurality of connecting shafts, a wrapping sleeve is arranged on the connecting shafts, a rotating ball is arranged in the wrapping sleeve, the friction between the rotating ball and the inner surface of the centralizing outer sleeve is reduced in a rolling mode, the service life of the centralizer is prolonged, meanwhile, the positioning sleeve, the connecting shafts and the rotating ball in the wrapping sleeve can play a supporting role to prevent the sucker rod from inclining, and the rotating ball rotates in, the surface of the rotating ball will be adhered with lubricating oil, further reducing its friction.
Description
Technical Field
The invention relates to the technical field of sucker rod rotary clamping centralizers, in particular to an underground sucker rod rotary clamping centralizer and a using method thereof.
Background
The sucker rod centralizer is a device for preventing eccentric wear of a sucker rod and an oil pipe in underground oil pumping work, the sucker rod is protected by the centralizer, when the sucker rod moves up and down in the oil pipe, the sucker rod is easy to rub against the wall of the oil pipe due to elastic deformation, and the sucker rod is easy to break off.
Chinese patent discloses a twist-clamping type sucker rod centralizer (publication number: CN 110500046B), which adopts a liquid inflow form by making the diameter of the outer side of a centralizing jacket similar to that of the inner wall of an oil pipe, so that the space of a fluid passage is sufficient, and simultaneously, the distance between a sucker rod positioned at the center and the inner wall of the oil pipe is ensured to be sufficient, and the sucker rod is ensured not to be damaged by friction with the inner wall of the oil pipe, but a rotary connecting component in the centralizer can generate friction with the inner surface of the centralizing jacket when rotating, so that the sucker rod still can be deviated after being used for a long time.
Disclosure of Invention
The invention aims to provide a rotary clamping centralizer for an underground sucker rod and a using method thereof.
The purpose of the invention can be realized by the following technical scheme:
a sucker rod rotary clamping centralizer for underground use comprises a centralizing outer sleeve, a sucker rod and a fixed shaft, wherein a connecting assembly is arranged at the bottom end of the sucker rod, the connecting assembly can prevent an oil pumping pipe from bending at a joint to a certain extent while connecting the oil pumping pipe, and a rotating assembly is fixedly connected to the outer surface of the fixed shaft;
the rotating assembly comprises a positioning plate located on the fixed shaft, the top of the positioning plate is fixedly connected with a positioning sleeve, a plurality of connecting shafts are fixedly connected to the circumferential surface of the positioning sleeve, one end of each connecting shaft is fixedly connected with a wrapping sleeve, the inner surface of the wrapping sleeve is connected with a rotating ball in a rolling mode, an annular groove is formed in the inner surface of the centering sleeve, the inner surface of the annular groove is matched with the outer surface of the rotating ball, the rotating ball in the rotating assembly can effectively reduce friction of the rotating ball, and the abrasion degree of the inner surface of the centering sleeve is reduced.
As a further scheme of the invention: the inside in ring channel has been seted up lubricated chamber, the inside in lubricated chamber is provided with the check valve, the one end of check valve runs through the overcoat of righting and extends to the outside of righting the overcoat, pours into lubricating oil into to the inside in lubricated chamber through the check valve, and lubricating oil can further reduce the friction when the rolling ball rolls in the inside of ring channel to prolong its life.
As a further scheme of the invention: coupling assembling includes the connecting block of sucker rod bottom and is located the stop collar at position sleeve top, the outer fixed surface of stop collar is connected with a plurality of limiting plate, the limiting plate sets up for the slope, a plurality of picture peg of bottom fixedly connected with of connecting block, the picture peg sets up for the slope, the picture peg is located between two adjacent limiting plates.
As a further scheme of the invention: the inclination angle of the inserting plate is the same as that of the limiting plate.
As a further scheme of the invention: the upper side and the lower side of the surface of the limiting plate are both provided with sliding grooves, the inner surfaces of the sliding grooves are both rotatably connected with rollers, and the outer surfaces of the rollers are in contact with the inner surface of the righting outer sleeve.
As a further scheme of the invention: the surface of fixed axle is provided with a plurality of toper pole, the equal fixedly connected with connecting block in both ends of toper pole, a plurality of spread groove has all been seted up to the global top of fixed axle and below, the internal surface of spread groove and the surface looks adaptation of connecting block, the internal surface of rightting the overcoat and be located one side of toper pole and be provided with the toper ring, the toper ring is used for restricting the toper pole to prescribe a limit to the position of fixed axle.
As a further scheme of the invention: the outer surface of the fixed shaft is connected with a sliding sleeve in a sliding mode, and the inner surface of the sliding sleeve is in contact with one side of the connecting block.
The invention also discloses a using method of the underground sucker rod rotary clamping centralizer, which comprises the following steps: at first, pour into lubricating oil through the inside of check valve to lubricated chamber, rethread centralizes the overcoat and is close to laminating oil pipe inner wall, and rotatory sucker rod makes the picture peg on the stop collar insert one side of limiting plate, in sucker rod oil pumping working process, centralize the overcoat and take place the rotation, and the roller in the sliding tray slides with the internal surface of centralizing the overcoat, and meanwhile, the rolling ball in the wrapping up in the cover rolls in the inside of ring channel on the connecting axle, and when the rolling ball in the lubrication chamber rotated, the coating was at the surface of rolling ball, and the inside taper ring of centralizing the overcoat is the same and is taken place to slide with the inside of taper rod.
The invention has the beneficial effects that:
(1) according to the invention, the wrapping sleeve is arranged on the connecting shaft, the rotating ball is arranged in the wrapping sleeve, the friction between the rotating ball and the inner surface of the centralizing outer sleeve is reduced in a rolling mode, so that the service life of the centralizing outer sleeve is prolonged, meanwhile, the positioning sleeve, the connecting shaft and the rotating ball in the wrapping sleeve can play a supporting role, the sucker rod is prevented from inclining, and lubricating oil is adhered to the surface of the rotating ball when the rotating ball rotates in the annular groove, so that the friction is further reduced.
(2) According to the invention, the connecting block is arranged on the sucker rod, the limiting plate is arranged on the limiting sleeve, the connecting block is connected with the limiting sleeve by utilizing the matching relation between the inserting plate and the limiting plate, and the roller in the sliding groove in the limiting plate is contacted with the inner surface of the righting outer sleeve, so that the phenomenon that the sucker rod deviates due to the fact that the sucker rod is long at the connecting part at the bottom end of the sucker rod is prevented from being broken.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of a portion of a downhole sucker rod rotary clamp centralizer according to the present invention;
FIG. 2 is an enlarged view of a portion of the structure of FIG. 1;
FIG. 3 is a schematic view of the internal structure of the stop collar of the present invention;
FIG. 4 is an external view of the connector block of the present invention;
fig. 5 is a partial structural schematic view of the stationary shaft of the present invention.
In the figure: 1. a righting jacket; 2. a sucker rod; 3. a fixed shaft; 41. positioning a plate; 42. a positioning sleeve; 43. a connecting shaft; 44. wrapping the sleeve; 45. rotating the ball; 46. an annular groove; 47. a lubrication chamber; 48. a one-way valve; 51. connecting blocks; 52. a limiting sleeve; 53. a limiting plate; 54. inserting plates; 55. a sliding groove; 56. a roller; 6. a tapered rod; 7. connecting grooves; 8. a conical ring; 9. a sliding sleeve; 10. and (7) installing the block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the invention relates to a centering device for a down-hole sucker rod rotary clamp, which comprises a centering jacket 1, a sucker rod 2 and a fixed shaft 3, wherein the bottom end of the sucker rod 2 is provided with a connecting component, and the outer surface of the fixed shaft 3 is fixedly connected with a rotating component;
the rotating assembly comprises a positioning plate 41 positioned on the fixed shaft 3, a positioning sleeve 42 is fixedly connected to the top of the positioning plate 41, a plurality of connecting shafts 43 are fixedly connected to the circumferential surface of the positioning sleeve 42, a connecting and supporting wrapping sleeve 44 is arranged between the positioning sleeve 42 and the connecting shafts 43, one end of each connecting shaft 43 is fixedly connected with the wrapping sleeve 44, a rotating ball 45 is connected to the inner surface of the wrapping sleeve 44 in a rolling mode, the rotating ball 45 is arranged to replace sliding friction with rolling friction, so that friction on the inner surface of the straightening coat 1 is reduced, an annular groove 46 is formed in the inner surface of the straightening coat 1, and the inner surface of the annular groove 46 is matched with the outer surface of the rotating ball 45.
In the invention, a lubricating cavity 47 is formed in the annular groove 46, a one-way valve 48 is arranged in the lubricating cavity 47, lubricating oil is injected into the lubricating cavity 47 through the one-way valve 48, the friction of the lubricating oil can be further reduced when the rotating ball 45 rolls in the annular groove 46, so that the service life of the lubricating oil is prolonged, and one end of the one-way valve 48 penetrates through the centering outer sleeve 1 and extends to the outside of the centering outer sleeve 1.
In the invention, the connecting assembly comprises a connecting block 51 at the bottom end of the sucker rod 2 and a limiting sleeve 52 positioned at the top of the positioning sleeve 42, a plurality of limiting plates 53 are fixedly connected to the outer surface of the limiting sleeve 52, the limiting plates 53 are arranged in an inclined manner, a plurality of inserting plates 54 are fixedly connected to the bottom of the connecting block 51, when in use, each inserting plate 54 is rotatably inserted between two corresponding adjacent limiting plates 53 by rotating the connecting block 51, the inserting plates 54 are arranged in an inclined manner, and the inserting plates 54 are positioned between two adjacent limiting plates 53, namely, the distance between two adjacent limiting plates 53 is the width of the inserting plate 54.
In the present invention, the inclination angle of the insertion plate 54 is the same as the inclination angle of the stopper plate 53.
In the invention, sliding grooves 55 are respectively arranged above and below the surface of the limiting plate 53, the inner surfaces of the sliding grooves 55 are respectively and rotatably connected with rollers 56, the rollers 56 can be transversely arranged in the sliding grooves 55 or vertically arranged in the sliding grooves 55, and the outer surfaces of the rollers 56 are in contact with the inner surface of the centralizing outer sleeve 1.
According to the invention, the outer surface of the fixing shaft 3 is provided with a plurality of conical rods 6, the position of the fixing shaft 3 can be limited through the conical rods 6 and the conical rings 8, the two ends of each conical rod 6 are fixedly connected with mounting blocks 10, a plurality of connecting grooves 7 are formed above and below the peripheral surface of the fixing shaft 3, during installation, the mounting blocks 10 on the conical rods 6 are inserted into the connecting grooves 7, the mounting blocks 10 are covered through sliding sleeves 9, so that the conical rods 6 are fixed, the inner surfaces of the connecting grooves 7 are matched with the outer surfaces of the mounting blocks 10, the conical rings 8 are arranged on the inner surface of the outer centralizing sleeve 1 and positioned on one side of the conical rods 6, and the conical rings 8 are used for limiting the conical rods 6.
In the invention, the outer surface of the fixed shaft 3 is connected with a sliding sleeve 9 in a sliding way, and the inner surface of the sliding sleeve 9 is contacted with one side of a mounting block 10.
The invention also discloses a using method of the underground sucker rod rotary clamping centralizer, which comprises the following steps: firstly, lubricating oil is injected into the lubricating cavity 47 through the check valve 48, then the centering outer sleeve 1 is close to the inner wall of the joint oil pipe, the sucker rod 2 is rotated to enable the inserting plate 54 on the limiting sleeve 52 to be inserted into one side of the limiting plate 53, the centering outer sleeve 1 rotates in the oil pumping working process of the sucker rod 2, the roller 56 in the sliding groove 55 slides with the inner surface of the centering outer sleeve 1, meanwhile, the rotating ball 45 in the wrapping sleeve 44 on the connecting shaft 43 rolls in the annular groove 46, and when the rotating ball 45 in the lubricating cavity 47 rotates, the lubricating oil is coated on the outer surface of the rotating ball 45, and the tapered ring 8 in the centering outer sleeve 1 also slides with the inner part of the tapered rod 6.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (8)
1. A sucker rod rotary clamping centralizer for underground use comprises a centralizing outer sleeve (1), a sucker rod (2) and a fixed shaft (3), and is characterized in that the bottom end of the sucker rod (2) is provided with a connecting assembly, and the outer surface of the fixed shaft (3) is fixedly connected with a rotating assembly;
the rotating assembly comprises a positioning plate (41) located on a fixing shaft (3), a positioning sleeve (42) is fixedly connected to the top of the positioning plate (41), a plurality of connecting shafts (43) are fixedly connected to the circumferential surface of the positioning sleeve (42), a wrapping sleeve (44) is fixedly connected to one end of each connecting shaft (43), a rotating ball (45) is connected to the inner surface of the wrapping sleeve (44) in a rolling mode, an annular groove (46) is formed in the inner surface of the centralizing outer sleeve (1), and the inner surface of the annular groove (46) is matched with the outer surface of the rotating ball (45).
2. The sucker rod rotating clamp centralizer for the downhole according to claim 1, wherein a lubricating cavity (47) is formed in the annular groove (46), a one-way valve (48) is arranged in the lubricating cavity (47), and one end of the one-way valve (48) penetrates through the centralizing outer sleeve (1) and extends to the outside of the centralizing outer sleeve (1).
3. The sucker rod rotary clamping centralizer for the downhole according to claim 1, wherein the connecting assembly comprises a connecting block (51) at the bottom end of the sucker rod (2) and a limiting sleeve (52) at the top of the positioning sleeve (42), a plurality of limiting plates (53) are fixedly connected to the outer surface of the limiting sleeve (52), the limiting plates (53) are arranged in an inclined mode, a plurality of inserting plates (54) are fixedly connected to the bottom of the connecting block (51), the inserting plates (54) are arranged in an inclined mode, and the inserting plates (54) are located between two adjacent limiting plates (53).
4. A sucker rod rotating centralizer according to claim 3, wherein the inclination angle of the insert plate (54) is the same as the inclination angle of the limit plate (53).
5. The sucker rod rotating clamp centralizer for the downhole according to claim 3, wherein sliding grooves (55) are formed above and below the surface of the limiting plate (53), rollers (56) are rotatably connected to the inner surfaces of the sliding grooves (55), and the outer surfaces of the rollers (56) are in contact with the inner surface of the centralizing outer sleeve (1).
6. The underground oil rod rotary clamping centralizer according to claim 1, wherein a plurality of conical rods (6) are arranged on the outer surface of the fixing shaft (3), mounting blocks (10) are fixedly connected to two ends of each conical rod (6), a plurality of connecting grooves (7) are formed in the upper portion and the lower portion of the circumferential surface of the fixing shaft (3), the inner surfaces of the connecting grooves (7) are matched with the outer surface of the connecting block (51), a conical ring (8) is arranged on one side, located on each conical rod (6), of the inner surface of the centralizing outer sleeve (1), and the conical ring (8) is used for limiting the conical rods (6).
7. A sucker rod rotating clamp centralizer for a well according to claim 6, characterized in that a sliding sleeve (9) is connected to the outer surface of the fixed shaft (3) in a sliding way, and the inner surface of the sliding sleeve (9) is in contact with one side of the connecting block (51).
8. A using method of an underground sucker rod rotary clamping centralizer is characterized by comprising the following steps: firstly, lubricating oil is injected into a lubricating cavity (47) through a one-way valve (48), then the centering outer sleeve (1) is close to and attached to the inner wall of an oil pipe, the sucker rod (2) is rotated to enable an inserting plate (54) on a limiting sleeve (52) to be inserted into one side of a limiting plate (53), the centering outer sleeve (1) rotates in the oil pumping process of the sucker rod (2), a roller (56) in a sliding groove (55) slides with the inner surface of the centering outer sleeve (1), meanwhile, a rotating ball (45) in a wrapping sleeve (44) on a connecting shaft (43) rolls in an annular groove (46), when the rotating ball (45) in the lubricating cavity (47) rotates, the lubricating oil is coated on the outer surface of the rotating ball (45), and a conical ring (8) in the centering outer sleeve (1) also slides with the inner part of a conical rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110803590.1A CN113266286B (en) | 2021-07-16 | 2021-07-16 | Underground oil rod rotary clamping centralizer and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110803590.1A CN113266286B (en) | 2021-07-16 | 2021-07-16 | Underground oil rod rotary clamping centralizer and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113266286A true CN113266286A (en) | 2021-08-17 |
| CN113266286B CN113266286B (en) | 2021-09-24 |
Family
ID=77236573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110803590.1A Active CN113266286B (en) | 2021-07-16 | 2021-07-16 | Underground oil rod rotary clamping centralizer and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113266286B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198044A (en) * | 2021-11-25 | 2022-03-18 | 盐城佰信石油机械有限公司 | Oil field oil extraction wellhead sealing protection method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787448A (en) * | 1987-08-18 | 1988-11-29 | Sable Donald E | Rod guide |
| CN201196035Y (en) * | 2008-01-16 | 2009-02-18 | 刘白杨 | Casing tube roller centralizer |
| CN209145516U (en) * | 2018-11-28 | 2019-07-23 | 东营天锦石油科技开发有限公司 | A kind of Novel sucker rod protective device |
| CN110500046A (en) * | 2019-09-12 | 2019-11-26 | 国际 | A kind of torsion cassette oil pumping rod centering device |
-
2021
- 2021-07-16 CN CN202110803590.1A patent/CN113266286B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787448A (en) * | 1987-08-18 | 1988-11-29 | Sable Donald E | Rod guide |
| CN201196035Y (en) * | 2008-01-16 | 2009-02-18 | 刘白杨 | Casing tube roller centralizer |
| CN209145516U (en) * | 2018-11-28 | 2019-07-23 | 东营天锦石油科技开发有限公司 | A kind of Novel sucker rod protective device |
| CN110500046A (en) * | 2019-09-12 | 2019-11-26 | 国际 | A kind of torsion cassette oil pumping rod centering device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198044A (en) * | 2021-11-25 | 2022-03-18 | 盐城佰信石油机械有限公司 | Oil field oil extraction wellhead sealing protection method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113266286B (en) | 2021-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113266286B (en) | Underground oil rod rotary clamping centralizer and using method thereof | |
| US9803432B2 (en) | Roller device | |
| EP0479927A1 (en) | Drill string component. | |
| US10156103B2 (en) | Centraliser | |
| CN111636831B (en) | Elastic centralizer | |
| CN215979246U (en) | Rotatable elasticity centralizer of sleeve pipe direct-connected type and elasticity righting equipment | |
| CN216741394U (en) | Underground pipe column centralizer | |
| US20160362944A1 (en) | Smooth bore collar | |
| CN103124850B (en) | There is the hydraulic press of plug cock | |
| CN109098672A (en) | A kind of oil pumping rod centering device of heat resistant and wear resistant damage | |
| CN110500046B (en) | Turn round card formula sucker rod centralizer | |
| CN205778580U (en) | A kind of sucker rod | |
| CN216811603U (en) | Roller centralizer | |
| CN2779040Y (en) | Partial abrasion proof centralizer of pumping rod | |
| CN113550708B (en) | Oil field casing pipe shaping device | |
| CN205577878U (en) | Pump sending gyro wheel centralizer | |
| US8757881B2 (en) | Bearing package for a progressive cavity pump | |
| WO2022180392A1 (en) | Torque reduction assembly | |
| CN209195286U (en) | A kind of oil pumping rod centering device of heat resistant and wear resistant damage | |
| CN205577877U (en) | Pump sending elasticity centralizer | |
| RU2237792C2 (en) | Connecting device for column of pump bars | |
| CN215761548U (en) | Self-lubricating sucker rod centralizer | |
| CN214660008U (en) | Universal rotary oil pipe centralizer | |
| RU2379463C1 (en) | Centraliser for additional casing string centralising inside main casing string and its manufacture method | |
| CN205577883U (en) | A drilling tool gyration bearing structure for raise boring machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240308 Address after: 224400 No. 8 Huanghe Road, Funing Economic Development Zone, Yancheng City, Jiangsu Province Patentee after: Yancheng Xinyuan Petrochemical Machinery Co.,Ltd. Country or region after: China Address before: 257081 room 435, Chuangye Valley, high tech Zone, No.1 building, No.23 Xianhe Road, Dongying District, Dongying City, Shandong Province Patentee before: Shandong Baiyuan Technology Co.,Ltd. Country or region before: China |