CN101871323B - Lengthened polish rod for oil well and connecting method thereof - Google Patents
Lengthened polish rod for oil well and connecting method thereof Download PDFInfo
- Publication number
- CN101871323B CN101871323B CN 201010207945 CN201010207945A CN101871323B CN 101871323 B CN101871323 B CN 101871323B CN 201010207945 CN201010207945 CN 201010207945 CN 201010207945 A CN201010207945 A CN 201010207945A CN 101871323 B CN101871323 B CN 101871323B
- Authority
- CN
- China
- Prior art keywords
- lengthened
- polish rod
- rod
- crossover sub
- bearing part
- 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.)
- Expired - Fee Related
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000012856 packing Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 abstract description 4
- 239000010779 crude oil Substances 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000000295 fuel oil Substances 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a lengthened polish rod for an oil well and a connecting method thereof, which are used for the petroleum industry and used for a testing oil well and a crude oil production well, particularly applied to a deep well and a thick oil well. The lengthened polish rod comprises a bearing part and a connecting seal part, wherein the connecting seal part is arranged and connected outside the bearing part. An upper polish rod of the bearing part of the lengthened polish rod is connected with an oil extractor plait through an upper joint, and a lower joint of the bearing part is connected with a sucker rod of an underground oil pump so as to bear and tension the underground load; and the connecting seal part is matched with a wellhead packing box so as not to bear and tension the underground load; therefore, good seal of the lengthened polish rod and a wellhead is realized. The lengthened polish rod realizes assembly and installation on a well site, and solves the problem of transportation after the polish rod is lengthened. The lengthened polish rod can reduce the stroke loss of the oil pump, improve the pumping efficiency and improve the economic benefit of crude oil recovery of the deep well and the thick oil well.
Description
Technical field
The present invention relates to the oil extraction Apparatus and operation method, particularly a kind of lengthened polish rod for oil well and attaching method thereof of petroleum industry, be used for Pressure Curve in Oil Testing Well and oil extraction well, be particularly useful for deep-well and heavy oil wells.
Background technology
Along with deepening continuously of oil field development, deep-well, heavy oil wells are on the increase.Loss of plunger stroke is big in the deep-well, and under 3000m pump extension condition, even the 6m stroke, loss of plunger stroke also near half the, has had a strong impact on pump efficiency.To heavy oil wells, crude oil advances the pump difficulty, and full level is low.
The long stroke pumping technology has obvious energy conservation, efficient advantages of higher, in the oil extraction of deep-well, heavy oil wells, has special advantages, becomes the developing direction of current sucker rod pumping.But in the long stroke oil pumping process, lengthened polish rod face transportation lengths limited with work progress in remove problem such as difficulty.
Summary of the invention
The purpose of this invention is to provide a kind of lengthened polish rod for oil well and attaching method thereof, be lowered at the scene and assemble connection in the process, should guarantee the bearing capacity of down-hole load, also will realize and the sealing of well head, reach the purpose that long stroke is pumped.
Can adopt following technical proposals for reaching above-mentioned purpose:
A kind of lengthened polish rod for oil well comprises the bearing part and is connected hermetic unit that the outside of bearing part is installed and connected hermetic unit.
The last polished rod of lengthened polish rod bearing part is connected with oil pumper hair plait through top connection, and the lower contact of bearing part is connected with the sucker rod of downhole pump, bears down-hole load; Connect hermetic unit and cooperate, do not bear down-hole load, realize the excellent sealing of this lengthened polish rod and well head with the well head packing box.
The present invention has following significant effect and progress: the present invention has realized installing in the assembling in well site, has overcome a transportation difficult problem that faces behind the polished rod lengthening.Lengthened polish rod of the present invention is divided into two parts to whole polished rod by crossover sub, has solved a difficult problem that is difficult to remove in the back construction of polished rod lengthening.The last polished rod of bearing part is a solid hopkinson bar with following polished rod, can guarantee bearing of down-hole load.Connect hermetic unit and do not bear down-hole load, cooperate, realized the excellent sealing of this lengthened polish rod with well head with the well head packing box.Use the present invention can reduce the loss of plunger stroke of oil well pump, improve pump efficiency, improve the economic benefit of deep-well, heavy oil wells oil extraction.
Description of drawings
Accompanying drawing is the structural representation of lengthened polish rod of the present invention.
The specific embodiment
Below in conjunction with detailed description of the drawings a kind of lengthened polish rod for oil well provided by the invention and attaching method thereof.Referring to accompanying drawing, a kind of lengthened polish rod for oil well comprises the bearing part and is connected hermetic unit that the outside of bearing part is installed and connected hermetic unit.The bearing part comprises polished rod 2, crossover sub 4, polished rod 7 and lower contact 8 down, and an end of last polished rod 2 and following polished rod 7 is connected with lower contact 8 with top connection 1 respectively, and the other end is respectively charged into the inner chamber of crossover sub 4.The bottom cylindrical of crossover sub 4 is provided with lower convex platform, and the top of lower convex platform is provided with external screw thread; The interior circle of crossover sub 4 is provided with at a distance from platform, and circle is provided with internal thread in the platform two ends; Circle is provided with seal groove at a distance from the outside of platform in crossover sub 4, and seal 5 is housed in the sealing groove, prevents that well liquid from getting between connection hermetic unit and the bearing part, causes corrosion to the bearing part.The middle part body of rod of last polished rod 2 is provided with spanner side A2, conveniently assembles in the well site.Connect hermetic unit and comprise upper exterior tube 3 and lower outer pipe 6, upper exterior tube 3 docks at the lower convex platform place of crossover sub 4 with lower outer pipe 6, keeps good butt joint between upper exterior tube 3 and the lower outer pipe 6.The top of upper exterior tube 3 is enclosed within the outside of polished rod 2, and its underpart is connected with the upper external thread of crossover sub 4 lower convex platforms.The top of lower outer pipe 6 is enclosed within the bottom of crossover sub 4 lower convex platforms and the outside of following polished rod 7, and its underpart is connected with the upper external thread of lower contact 8.Above crossover sub 4 lower convex platforms, be provided with cannelure A1, used for beating elevator.The cylindrical of the no screw thread body wall between the internal thread of lower contact 8 and the external screw thread is provided with seal groove, and interior dress seal prevents that well liquid from getting between connection hermetic unit and the bearing part.The internal thread of said lower contact 8 is meant the internal thread that lower contact 8 is connected with following polished rod 7, and external screw thread is meant the external screw thread that is connected with lower outer pipe 6.
A kind of method of attachment of lengthened polish rod for oil well is that the last polished rod 2 with lengthened polish rod of the present invention bearing part is connected with oil pumper hair plait through top connection 1, and the lower contact 8 of bearing part is connected with the sucker rod of downhole pump, bears down-hole load; The connection hermetic unit of lengthened polish rod of the present invention cooperates with the well head packing box, realizes the sealing of this lengthened polish rod and well head.
Install with on-the-spot for convenient transportation, lengthened polish rod of the present invention is divided into three parts and assembles before transportation: top connection 1 and last polished rod 2 are assembled into an integral body; Crossover sub 4, seal 5, lower outer pipe 6, following polished rod 7 and lower contact 8 are assembled into an integral body; Upper exterior tube 3 is separately as a part.Assemble the available common haulage vehicle in back and be transported to the well site, in being lowered to process, accomplished the connection of lengthened polish rod.The scene is lowered in the process, is connected the cannelure A1 place that elevator is beaten at crossover sub 4, the upper exterior tube 3 of packing into to crossover sub 4, seal 5, lower outer pipe 6, following polished rod 7 with the down-hole sucker rod with lower contact 8 these a part of lower contacts 8 earlier.Polished rod 2 in upper exterior tube 3, packing into up is pushed into the top of polished rod 2 spanner side A2 with upper exterior tube 3, and the thread belt that will go up polished rod 2 lower end screw threads and crossover sub 4 with spanner is tight.With the lower end of another elevator card to top connection 1, remove the card that falls at cannelure A1 place, upper exterior tube 3 and crossover sub 4 are tightened, the scene of accomplishing lengthened polish rod of the present invention connects, and can drop into normal use.
Claims (6)
1. a lengthened polish rod for oil well is characterized in that this lengthened polish rod comprises the bearing part and is connected hermetic unit, installs in the outside of bearing part to connect hermetic unit; The bearing part comprises polished rod (2), crossover sub (4), polished rod (7) and lower contact (8) down, and an end of last polished rod (2) and following polished rod (7) is connected with lower contact (8) with top connection (1) respectively, and the other end is respectively charged into the inner chamber of crossover sub (4); The bottom cylindrical of crossover sub (4) is provided with lower convex platform, and the top of lower convex platform is provided with external screw thread; The interior circle of crossover sub (4) is provided with at a distance from platform, and circle is provided with internal thread in the platform two ends; Circle is provided with seal groove at a distance from the outside of platform in crossover sub (4), and seal (5) is housed in the sealing groove; Top at crossover sub (4) lower convex platform is provided with cannelure (A1); Connect hermetic unit and comprise upper exterior tube (3) and lower outer pipe (6), upper exterior tube (3) and lower outer pipe (6) are in the butt joint of the lower convex platform place of crossover sub (4).
2. a kind of lengthened polish rod for oil well according to claim 2 is characterized in that the middle part body of rod of polished rod (2) is provided with spanner side (A2).
3. a kind of lengthened polish rod for oil well according to claim 1 is characterized in that the top of upper exterior tube (3) is enclosed within the outside of polished rod (2), and its underpart is connected with the upper external thread of crossover sub (4) lower convex platform.
4. a kind of lengthened polish rod for oil well according to claim 1 is characterized in that the top of lower outer pipe (6) is enclosed within the bottom of crossover sub (4) lower convex platform and the outside of following polished rod (7), and its underpart is connected with the upper external thread of lower contact (8).
5. according to claim 1 or 4 described a kind of lengthened polish rod for oil well, it is characterized in that the internal thread of lower contact (8) and the cylindrical of the no screw thread body wall between the external screw thread are provided with seal groove, interior dress seal.
6. be used for the method for attachment of claim 1 lengthened polish rod for oil well; The last polished rod (2) that it is characterized in that the lengthened polish rod bearing part is connected with oil pumper hair plait through top connection (1); The lower contact of bearing part (8) is connected with the sucker rod of downhole pump, bears down-hole load; The connection hermetic unit of lengthened polish rod cooperates with the well head packing box, realizes the sealing of this lengthened polish rod and well head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010207945 CN101871323B (en) | 2010-06-10 | 2010-06-10 | Lengthened polish rod for oil well and connecting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010207945 CN101871323B (en) | 2010-06-10 | 2010-06-10 | Lengthened polish rod for oil well and connecting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101871323A CN101871323A (en) | 2010-10-27 |
| CN101871323B true CN101871323B (en) | 2012-10-03 |
Family
ID=42996391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010207945 Expired - Fee Related CN101871323B (en) | 2010-06-10 | 2010-06-10 | Lengthened polish rod for oil well and connecting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101871323B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929587B (en) * | 2015-07-06 | 2017-09-08 | 中国石油化工股份有限公司 | A kind of oil well pump touches pumping method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246067A (en) * | 1992-04-21 | 1993-09-21 | Double-E Inc. | Well leak catcher |
| CN2742119Y (en) * | 2004-11-04 | 2005-11-23 | 西南石油学院 | Device for reducing oil pumping unit overhead seal packing bias wear |
| CN201250612Y (en) * | 2008-07-18 | 2009-06-03 | 张永 | Extrusion forming down-hole drill rod |
| CN101644148A (en) * | 2008-08-06 | 2010-02-10 | 大庆油田有限责任公司 | Non-smooth flexible rope corrugated pipe wellhead sealing device |
| CN201695959U (en) * | 2010-06-10 | 2011-01-05 | 中国石油化工股份有限公司 | Lengthened polished rod for oil well |
-
2010
- 2010-06-10 CN CN 201010207945 patent/CN101871323B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246067A (en) * | 1992-04-21 | 1993-09-21 | Double-E Inc. | Well leak catcher |
| CN2742119Y (en) * | 2004-11-04 | 2005-11-23 | 西南石油学院 | Device for reducing oil pumping unit overhead seal packing bias wear |
| CN201250612Y (en) * | 2008-07-18 | 2009-06-03 | 张永 | Extrusion forming down-hole drill rod |
| CN101644148A (en) * | 2008-08-06 | 2010-02-10 | 大庆油田有限责任公司 | Non-smooth flexible rope corrugated pipe wellhead sealing device |
| CN201695959U (en) * | 2010-06-10 | 2011-01-05 | 中国石油化工股份有限公司 | Lengthened polished rod for oil well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101871323A (en) | 2010-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201412129Y (en) | Gas recovery well machine liquid pumping and drainage gas recovery device | |
| CN201137564Y (en) | Down-hole oil pump | |
| CN101871323B (en) | Lengthened polish rod for oil well and connecting method thereof | |
| CN201554633U (en) | Falling object protective oil pump capable of performing annulus logging | |
| CN201695959U (en) | Lengthened polished rod for oil well | |
| US20060245957A1 (en) | Encapsulated bottom intake pumping system | |
| RU65945U1 (en) | DESIGN OF PUMPS OF PUMP AND COMPRESSOR PIPES | |
| CN102720663A (en) | Special oil-well pump for multifunctional submersible linear motor | |
| CN201047271Y (en) | Oil pumping motor-pumped well de-loading machine | |
| CN104533765A (en) | Double-fixation scale-blockage-preventing long-plunger sand-preventing oil well pump | |
| CN201292939Y (en) | Oil well pump for reducing suspension point load of advanced water injection drive block | |
| CN205422612U (en) | Producing well mouth sealing device | |
| CN113944451B (en) | Pneumatic rodless liquid discharge lifting pipe column and method for pneumatic production well | |
| CN202832274U (en) | Device of suction assistance and load reduction | |
| CN201443307U (en) | Sucking-aid centralizer for sucker rod | |
| RU2065026C1 (en) | Method for producing flooded oil | |
| CN204266973U (en) | The linkage of a kind of hydraulic cylinder and well head | |
| CN212296324U (en) | Oil pumping device of electric screw pump capable of separately pumping and separating oil submersible | |
| CN202900073U (en) | High-inclination well hollow sucker rod self-righting device | |
| CN2556364Y (en) | Downhole oil-water separating device for continuous oil feeding oil well pump | |
| CN101846061A (en) | Rodless hydraulic deep-well oil pump | |
| CN202431258U (en) | Flow string for oil well | |
| CN201065754Y (en) | Oil-well pump sand-proof device | |
| CN201679697U (en) | Long-acting compound seal plunger defueling pump | |
| CN204327458U (en) | Two fixing antiscale card long plunger type sand-control oil well pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20200610 |