CN107489391B - Sucker rod self-sealing device - Google Patents
Sucker rod self-sealing device Download PDFInfo
- Publication number
- CN107489391B CN107489391B CN201710820001.4A CN201710820001A CN107489391B CN 107489391 B CN107489391 B CN 107489391B CN 201710820001 A CN201710820001 A CN 201710820001A CN 107489391 B CN107489391 B CN 107489391B
- Authority
- CN
- China
- Prior art keywords
- shell
- sucker rod
- rubber core
- fixing assembly
- sealing
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 52
- 210000004907 gland Anatomy 0.000 claims abstract description 21
- 239000010865 sewage Substances 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 241000283216 Phocidae Species 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 20
- 239000010959 steel Substances 0.000 abstract description 20
- 238000000605 extraction Methods 0.000 abstract description 4
- 239000012188 paraffin wax Substances 0.000 description 6
- 239000001993 wax Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- 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
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
Abstract
The invention belongs to the technical field of oil extraction in an oil field, and particularly relates to a sucker rod self-sealing device which comprises a sealing assembly, a shell and a well control assembly, wherein the sealing assembly is arranged in the shell and is tightly pressed by a shell gland, the structure of the sealing assembly comprises a rubber core A, a steel brush and a rubber core B from top to bottom, the rubber core A, the steel brush and the rubber core B are fixedly connected in series through a series rod, an upper layer drain pipe is correspondingly arranged in a section between the side surface of the shell and the upper and lower rubber cores, a lower layer drain pipe is correspondingly arranged in a space between the side surface of the shell and the lower side of the rubber core B, a steam interface is further arranged on the side surface of the shell, a quick-connection joint with a check valve is connected on the steam interface, and a wellhead joint for connecting a wellhead is arranged at the bottom of the shell. The invention can seal the sucker rod and scrape away the oil wax adhered on the sucker rod when the sucker rod is lifted; the arrangement of the blow-down pipe can prevent dirty oil and sewage generated in the wellhead oil pipe from falling to the ground during the operation of the sucker rod.
Description
Technical Field
The invention belongs to the technical field of oil extraction in an oil field, and particularly relates to a sucker rod self-sealing device.
Background
The pumping unit is one of the most common oil extraction equipment in oil field production, and its operation principle is that the power equipment and the transmission mechanism drive the pumping rod to reciprocate, so as to drive the plunger connected to the lower end of the pumping rod to pump oil and to convey underground liquid to ground. The sucker rod column is formed by connecting a plurality of sucker rods in series, a large amount of dirty oil, paraffin and other substances are adhered to the sucker rods in the process of taking the sucker rods out of the well, the sucker rods are inevitably polluted by frequent environments when cleaned in a well site, the cleaning cost is high, and the cleaning sewage production amount is large. Therefore, there is a great need for improvements in the manner of cleaning sucker rods.
Disclosure of Invention
The invention provides a sucker rod self-sealing device, which solves the problems in the prior art.
The technical problems solved by the invention are realized by adopting the following technical scheme: the invention provides a sucker rod self-sealing device, which comprises a sealing assembly, a shell and a well control assembly, wherein the sealing assembly is arranged in the shell and is tightly pressed by a shell gland, the structure of the sealing assembly comprises a rubber core A, a steel brush and a rubber core B from top to bottom, the rubber core A, the steel brush and the rubber core B are fixedly connected in series through a series rod, an upper layer drain pipe is correspondingly arranged at a section between the side surface of the shell and the upper and lower rubber cores, a lower layer drain pipe is correspondingly arranged at a space between the side surface of the shell and the lower side of the rubber core B, a steam interface is further arranged at the side surface of the shell, a quick-connection joint with a check valve is connected to the steam interface, and a wellhead joint for connecting a wellhead is arranged at the bottom of the shell;
the rubber core A is of a disc-shaped structure made of rubber, a round hole for penetrating through the sucker rod is formed in the center of the rubber core A, the thickness of the peripheral portion of the round hole is thickest on the rubber core A, the thickness of the edge of the rubber core A is thinnest, the thickest portion and the thinnest portion are in transition through conical surfaces and round corners, and the structure of the rubber core B is identical to that of the rubber core A;
the well control assembly comprises a hanger, a hanger gland and a pressure release valve, wherein the lower end of the hanger is connected with the end part of the sucker rod through threads, the hanger is fixed on the shell gland through the hanger gland, the pressure release valve is connected to the upper end of the hanger, an upper conical surface and a lower conical surface are respectively arranged on the outer sides of the upper end and the lower end of the hanger, the upper conical surface is in sealing fit with an inner hole of the shell gland, the lower conical surface is in sealing fit with an inner hole of the rubber core A, a ball seat is arranged at the outlet end of the pressure release valve, and a sealing ball is packaged in the ball seat.
As an alternative scheme, the structure of the sealing assembly comprises an upper fixing assembly, a rubber sleeve and a lower fixing assembly, wherein the upper fixing assembly and the lower fixing assembly are respectively fixed at the upper end and the lower end of the rubber sleeve, the upper fixing assembly is connected with the lower fixing assembly through a ball head connecting rod, the ball heads at the two ends of the ball head connecting rod, the upper fixing assembly and the lower fixing assembly form a spherical hinge connection structure respectively, a rubber core C is arranged on the inner side of the lower fixing assembly, a supporting wheel is arranged on the lower side of the lower fixing assembly, and the supporting wheel abuts against a sucker rod penetrating through the center of the sealing assembly under the action of a torsion spring.
The steel brush is made of steel wire oil ropes which are cut into small sections.
At least two steam interfaces are arranged, and each steam interface is circumferentially distributed around the shell.
The beneficial effects of the invention are as follows:
1. the invention can seal the sucker rod and scrape away the oil wax adhered on the sucker rod when the sucker rod is lifted; the plurality of steam interfaces are used for connecting a matched steam boiler to thoroughly dewater the sucker rod in the lifting construction; the sewage pipe is arranged, so that the invention can be in seamless joint with the dirty oil and sewage environment-friendly recovery device of the well site, and dirty oil and sewage generated in the well head oil pipe can not fall to the ground when the sucker rod works, thereby thoroughly avoiding pollution to the well site caused by cleaning the sucker rod, saving the paraffin removal procedure and saving the working time and the paraffin removal cost.
2. The invention is arranged at the wellhead, and the measures of well killing and well flushing in the operation construction are not influenced, so the invention is very convenient to use.
3. When the overflow is large or the well kick occurs in the construction, and the pressure exceeds the sealing pressure of the sealing assembly, the well control assembly can be utilized to control the well, and the rapid well control of the stopping operation between the sucker rods can be realized within 2-3 min.
Drawings
FIG. 1 is a perspective cross-sectional view of the overall structure of the present invention;
FIG. 2 is a perspective cross-sectional view of a housing and housing gland;
FIG. 3 is a perspective cross-sectional view of a seal assembly;
FIG. 4 is a perspective cross-sectional view of a well control assembly;
FIG. 5 is a schematic view of another seal assembly;
fig. 6 is a schematic view of the seal assembly of fig. 5 after being installed in a housing.
In the figure: 1-shell, 2-rubber core B, 3-steel brush, 4-serial connection rod, 5-rubber core A, 6-shell gland, 7-hanger, 8-hanger gland, 9-quick connector, 10-upper layer drain pipe, 11-lower layer drain pipe, 12-steam interface, 13-wellhead connector, 14-supporting wheel, 15-lower fixing component, 16-ball head connecting rod, 17-ball head, 18-upper fixing component, 19-rubber sleeve, 20-lower conical surface, 21-upper conical surface, 22-relief valve, 23-sealing ball, 24-ball seat, 25-sucker rod and 26-rubber core C.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the embodiment comprises a sealing assembly, a shell 1 and a well control assembly, wherein the sealing assembly is installed in the shell 1 and is pressed by a shell gland 6.
The sealing assembly is characterized in that the sealing assembly comprises a rubber core A5, a steel brush 3 and a rubber core B2 from top to bottom, the rubber core A5, the steel brush 3 and the rubber core B2 are fixedly connected in series through a serial connection rod 4, the edges of the rubber core A5 and the rubber core B2 are in sealing fit with the shell 1, and round holes for penetrating through the sucker rod 25 are formed in the centers of the rubber core A5 and the rubber core B2. The upper rubber core and the lower rubber core can be attached to the outer wall of the sucker rod 25 by means of the elastic action of rubber, so that the sucker rod 25 is sealed. In addition to the sealing function, the rubber core B2 can also play a role in scraping oil during the extraction of the sucker rod 25. The steel brush 3 can scrape the wax on the rod body of the sucker rod 25 and scrape the wax on the sucker rod centralizer, thereby ensuring the paraffin removal effect.
The centralizer fixed on the sucker rod 25 is moved upwards along with the sucker rod 25, the diameter of the circular hole on the upper rubber core and the lower rubber core is enlarged by the centralizer with larger diameter, then the hole is passed through, and after the centralizer passes through, the hole diameter of the circular hole is restored to the state before the support under the action of elastic restoring force. When the centralizer passes through the steel brush 3, the steel wire brush hair of the steel brush 3 is bent upwards, and the centralizer is reset after passing through.
Because the centralizer is provided with the liquid passing groove, when the centralizer is positioned in the round hole on the rubber core, the sealing function of the rubber core is invalid. In order to solve the problem, the invention is provided with the upper rubber core and the lower rubber core, when the centralizer passes through the rubber core B2, the rubber core A5 is in a sealing state, and when the centralizer passes through the rubber core A5, the rubber core B2 is in a sealing state, and the upper rubber core and the lower rubber core are alternately sealed, so that the continuous and effective sealing of the rubber cores is ensured.
The side of the shell 1 and the section between the upper rubber core and the lower rubber core are correspondingly provided with an upper layer blow-down pipe 10 which is used for discharging the wax scraped by the steel brush 3 and discharging the first-level blow-down pressure. The side of the shell 1 corresponds to the space below the rubber core B2 and is provided with a lower layer blow-down pipe 11 which is used for discharging the oil scraped by the rubber core B2 and discharging the first-level blow-down pressure. In addition, through the mode of blowdown pressure release step by step, can effectively reduce the sealing pressure of rubber core B2 to guarantee sealed validity.
The side of casing 1 still is provided with steam interface 12, is connected with the quick connector 9 that has the check valve on the steam interface 12, connects steam piping through quick connector 9, can carry out steam cleaning to sucker rod 25 in the in-process of lifting out sucker rod 25 to thoroughly avoid polluting the floor.
The bottom of casing 1 is provided with the well head that is used for connecting the well head and connects 13, and well head connects 13 can have three kinds of forms, and first adopts the screw thread to be connected with the well head, and second adopts the clamp to be connected with the well head, and third is through flange and well head connection.
The rubber core A5 is of a disc-shaped structure made of rubber, the thickness of the peripheral part of the round hole is thickest on the rubber core A5, the thickness of the edge of the rubber core A5 is thinnest, the thickest part and the thinnest part realize transition through a conical surface and a round angle, and the structure of the rubber core B2 is identical to that of the rubber core A5. In the process of lifting the sucker rod 25, the sucker rod 25 can swing in the round holes in the centers of the upper rubber core and the lower rubber core, and if the parts of the upper rubber core and the lower rubber core matched with the sucker rod 25 are fixed, the sealing surfaces of the upper rubber core and the lower rubber core can be quickly worn, and eccentric wear is easy to cause. The rubber core structure with thick middle and thin edge can effectively solve the problems, and the principle is that: when the sucker rod 25 swings, the thin edge on the rubber core can be wrinkled, and the position relationship between the sealing surface matched with the sucker rod 25 on the rubber core and the sucker rod 25 does not change obviously, so that the abrasion of the sealing surface on the rubber core is delayed, and the eccentric abrasion problem is avoided.
The well control assembly comprises a hanger 7, a hanger gland 8 and a pressure relief valve 22, wherein the lower end of the hanger 7 is in threaded connection with the end part of a sucker rod 25, the hanger 7 is fixed on a shell gland 6 through the hanger gland 8, the pressure relief valve 22 is connected to the upper end of the hanger 7, an upper conical surface 21 and a lower conical surface 20 are respectively arranged on the outer sides of the upper end and the lower end of the hanger 7, the upper conical surface 21 is in sealing fit with an inner hole of the shell gland 6, and the lower conical surface 20 is in sealing fit with an inner hole of a rubber core A5. When the pressure exceeds the sealing pressure of the sealing component, the well control component can be utilized to control the well, during well control, the well control component is taken out, the lower end of the hanger 7 is connected to the upper end of the sucker rod 25, the well control component is installed on the shell gland 6, after the well control component is installed, the upper conical surface 21 on the hanger 7 is in sealing fit with the inner hole of the shell gland 6, and the lower conical surface 20 props up the round hole on the rubber core A5 and is in sealing fit with the hole wall of the round hole, so that the upper end of the shell 1 is sealed, and well control is realized.
The outlet end of the relief valve 22 is provided with a ball seat 24, and a sealing ball 23 is encapsulated in the ball seat 24. The valve structure formed by the ball seat 24 and the sealing ball 23 can prevent the liquid in the well from overflowing while ensuring the smooth in-out and in-out of the gas.
As an alternative, the structure of the sealing assembly comprises an upper fixing assembly 18, a rubber sleeve 19 and a lower fixing assembly 15, wherein the upper fixing assembly 18 and the lower fixing assembly 15 are respectively fixed at the upper end and the lower end of the rubber sleeve 19, the upper fixing assembly 18 and the lower fixing assembly 15 are connected through a ball-head connecting rod 16, ball heads 17 at the two ends of the ball-head connecting rod 16, the upper fixing assembly 18 and the lower fixing assembly 15 respectively form a spherical hinge connection structure, a rubber core C26 is also arranged at the inner side of the lower fixing assembly 15, a supporting wheel 14 is arranged at the lower side of the lower fixing assembly 15, and the supporting wheel 14 abuts against a sucker rod 25 penetrating through the center of the sealing assembly under the action of a torsion spring. In this configuration, the rubber core C26 performs the sealing and oil scraping functions, and the ball-head connecting rod 16 can change the lower sealing assembly 15 together with the rubber core C26 mounted thereon into a floating state, which functions similarly to the function of the rubber core with thick middle and thin edge, so as to avoid the excessive wear of the rubber core and avoid the eccentric wear of the rubber core. The supporting wheel 14 plays a supporting role, so that vibration of the sucker rod 25 can be effectively restrained, and in addition, the supporting wheel 14 can also play a role in rolling the sucker rod so as to promote wax to be separated from the sucker rod 25.
The steel brush 3 is made of a steel wire oil rope which is cut into small sections, one end of the small section of steel wire oil rope is fixed, the other end of the small section of steel wire oil rope points to the sucker rod 25, and the end part of the small section of steel wire oil rope points to the sucker rod 25 to break and break to form steel wire brush hair.
At least two steam connectors 12 are arranged, each steam connector 12 is circumferentially distributed around the shell 1, and the steam connectors can be flexibly connected with steam pipelines according to the field space during operation, and can also be simultaneously connected with a plurality of steam pipelines.
The invention can seal the sucker rod 25 and scrape off the adhering wax on the sucker rod 25 when the sucker rod 25 is lifted; a plurality of steam interfaces for connecting a matched steam boiler to thoroughly dewater the sucker rod 25 in the lifting construction; the arrangement of the blow-down pipe enables the invention to be in seamless joint with the dirty oil and sewage environment-friendly recovery device of the well site, and the dirty oil and sewage generated in the well head oil pipe is not landed when the sucker rod 25 is operated, thereby thoroughly avoiding the pollution to the well site caused by cleaning the sucker rod 25, saving the paraffin removal procedure and saving the working time and the paraffin removal cost. In addition, the invention is arranged at the wellhead, so that the well control and well flushing measures in the operation and construction are not influenced, and the use is very convenient.
Claims (1)
1. The utility model provides a sucker rod self sealss device which characterized in that: comprises a sealing component, a shell (1) and a well control component, wherein the sealing component is arranged in the shell (1) and is tightly pressed by a shell gland (6),
the sealing assembly comprises an upper fixing assembly (18), a rubber sleeve (19) and a lower fixing assembly (15), wherein the upper fixing assembly (18) and the lower fixing assembly (15) are respectively fixed at the upper end and the lower end of the rubber sleeve (19), the upper fixing assembly (18) and the lower fixing assembly (15) are connected through a ball-head connecting rod (16), ball heads (17) at the two ends of the ball-head connecting rod (16) and the upper fixing assembly (18) and the lower fixing assembly (15) respectively form a spherical hinge connection structure, a rubber core C (26) is arranged at the inner side of the lower fixing assembly (15), a supporting wheel (14) is arranged at the lower side of the lower fixing assembly (15), and the supporting wheel (14) is abutted against a sucker rod (25) penetrating through the center of the sealing assembly under the action of a torsion spring;
the side of the shell (1) is provided with an upper layer sewage drain pipe (10) and a lower layer sewage drain pipe (11), the side of the shell (1) is also provided with a steam interface (12), the steam interface (12) is connected with a quick connector (9) with a check valve, and the bottom of the shell (1) is provided with a wellhead connector (13) for connecting a wellhead;
the well control assembly comprises a hanger (7), a hanger gland (8) and a pressure relief valve (22), wherein the lower end of the hanger (7) is in threaded connection with the end part of a sucker rod (25), the hanger (7) is fixed on a shell gland (6) through the hanger gland (8), the pressure relief valve (22) is connected to the upper end of the hanger (7), an upper conical surface (21) is arranged on the outer side of the upper end of the hanger (7), the upper conical surface (21) is in sealing fit with an inner hole of the shell gland (6), a ball seat (24) is arranged at the outlet end of the pressure relief valve (22), and a sealing ball (23) is packaged in the ball seat (24);
the wellhead joint (13) is connected with the wellhead by adopting threads or connected with the wellhead by adopting a clamp;
at least two steam interfaces (12) are arranged, and each steam interface (12) is circumferentially distributed around the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820001.4A CN107489391B (en) | 2017-09-13 | 2017-09-13 | Sucker rod self-sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820001.4A CN107489391B (en) | 2017-09-13 | 2017-09-13 | Sucker rod self-sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489391A CN107489391A (en) | 2017-12-19 |
| CN107489391B true CN107489391B (en) | 2024-01-02 |
Family
ID=60652587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710820001.4A Active CN107489391B (en) | 2017-09-13 | 2017-09-13 | Sucker rod self-sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107489391B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110000133B (en) * | 2019-04-10 | 2023-11-14 | 大庆市宏博晟达石油机械设备有限公司 | Multifunctional paraffin removal descaling cleaning assembly |
| CN110043213B (en) * | 2019-04-12 | 2022-06-03 | 中国石油天然气股份有限公司 | Sucker rod well head protector |
| CN113653466B (en) * | 2020-05-12 | 2023-02-24 | 中国石油天然气股份有限公司 | Sucker rod pulling-out device |
| CN112412381B (en) * | 2021-01-19 | 2021-06-11 | 胜利油田东方实业投资集团有限责任公司 | Oil recovery well head sealing protection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2118147U (en) * | 1991-04-12 | 1992-10-07 | 周世贤 | Oil pipe hanging apparatus for borehole of operated well |
| RU2212516C1 (en) * | 2002-01-11 | 2003-09-20 | Абрамов Александр Федорович | Casing-head stuffing box |
| CN201083113Y (en) * | 2007-09-26 | 2008-07-09 | 大庆油田有限责任公司 | Oil pipe and oil pumping rod automatic washing device |
| CN201180511Y (en) * | 2007-11-30 | 2009-01-14 | 南京伟业机械有限公司 | Gas injection, oil extraction shaft mouth apparatus |
| CN205638367U (en) * | 2016-05-21 | 2016-10-12 | 河北鸿凯石油科技有限公司 | Sucker rod is proclaimed oneself and is scraped wax device |
| CN206053897U (en) * | 2016-09-29 | 2017-03-29 | 胡胜杰 | Polish rod sealing device |
| CN207122293U (en) * | 2017-09-13 | 2018-03-20 | 李淑华 | A kind of sucker rod self-seal device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120305234A1 (en) * | 2011-06-02 | 2012-12-06 | Vowels Lyle D | Sucker Rod Cleaner |
-
2017
- 2017-09-13 CN CN201710820001.4A patent/CN107489391B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2118147U (en) * | 1991-04-12 | 1992-10-07 | 周世贤 | Oil pipe hanging apparatus for borehole of operated well |
| RU2212516C1 (en) * | 2002-01-11 | 2003-09-20 | Абрамов Александр Федорович | Casing-head stuffing box |
| CN201083113Y (en) * | 2007-09-26 | 2008-07-09 | 大庆油田有限责任公司 | Oil pipe and oil pumping rod automatic washing device |
| CN201180511Y (en) * | 2007-11-30 | 2009-01-14 | 南京伟业机械有限公司 | Gas injection, oil extraction shaft mouth apparatus |
| CN205638367U (en) * | 2016-05-21 | 2016-10-12 | 河北鸿凯石油科技有限公司 | Sucker rod is proclaimed oneself and is scraped wax device |
| CN206053897U (en) * | 2016-09-29 | 2017-03-29 | 胡胜杰 | Polish rod sealing device |
| CN207122293U (en) * | 2017-09-13 | 2018-03-20 | 李淑华 | A kind of sucker rod self-seal device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107489391A (en) | 2017-12-19 |
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