CN102720438B - High-strength flexible oil-pumping polished rod - Google Patents
High-strength flexible oil-pumping polished rod Download PDFInfo
- Publication number
- CN102720438B CN102720438B CN201210205223.2A CN201210205223A CN102720438B CN 102720438 B CN102720438 B CN 102720438B CN 201210205223 A CN201210205223 A CN 201210205223A CN 102720438 B CN102720438 B CN 102720438B
- Authority
- CN
- China
- Prior art keywords
- odd
- extension bar
- threaded joint
- even number
- sheets
- 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
Landscapes
- Earth Drilling (AREA)
Abstract
The invention aims to provide a high-strength flexible oil-pumping polished rod which comprises threaded joints, a connecting rod and a pin shaft, wherein interface plug-in sheets are arranged at both the two ends of the connecting rod, the number of interface plug-in sheets at one end is an odd number, and the number of interface plug-in sheets at the other end is an even number; the threaded joints include an even threaded joint and an odd threaded joint, a connecting thread is formed at one end of the even threaded joint, interface plug-in sheets in even number are arranged at the other end of the even threaded joint, a connecting thread is formed at one end of the odd threaded joint, interface plug-in sheets in odd number are arranged at the other end of the odd threaded joint, the even threaded joint is engaged with the odd number of interface plug-in sheets of the connecting rod, and the odd threaded joint is engaged with the even number of interface plug-in sheets of the connecting rod; pin holes are formed in the threaded joints and the plug-in sheets of the connecting rod respectively; both the assembly of the even threaded joint and the connecting rod and the assembly of the odd threaded joint and the connecting rod are connected together by being arranged in the pin holes through the pin shafts. The high-strength flexible oil-pumping polished rod has the characteristics of flexibility, convenience for wellhead polished rod sealing, high strength and long service life.
Description
Technical field
What the present invention relates to is a kind of oil pumper, specifically the oil pumping polish rod of oil pumper.
Background technology
In China's oil extraction in oil field technique, mechanical oil recovery is topmost oil production method.Especially the most general with the application of sucker rod pumping equipment, rod pumping system comprises oil pumper, rod pumping pump, rod string system.Rod string system comprises polished rod, sucker rod, weighted lever etc., and polished rod is mainly used in connecting oil pumper and underground sucker rod, and its rigid structures that is smooth in appearance is positioned at well head, and coordinates with corresponding sealing device, realizes the mouth of pumped oil well sealing in oil pumping stroke.
Along with the continuous exploitation in oil field, the quantity of stripper well increases, and the new pumping units such as oil recovery center for individual well times journey oil pumper and many wells have appearred in energy consumption in succession that adopt for reducing machinery, have changed the working method of the well head oil pumping polish rod of beam-pumping unit in the past.Require sucker rod to there is on the one hand certain flexibility to adapt to the transmission needs of new pumping unit, can realize wellhead sealing simultaneously; Require on the other hand the requirements such as high strength, long-life, easy care.Although former oil pumping polish rod can solve sealing, there is intensity high, do not there is flexibility, can not be for new-type oil pumper.Adopt common chain, steel cable etc. as sucker rod, although there is flexibility, have the low problem of wellhead sealing and intensity.
Summary of the invention
The object of the present invention is to provide a kind of high-strength flexible oil pumping polish rod that can effectively solve sucker rod partial wear problem.
The object of the present invention is achieved like this:
A kind of high-strength flexible oil pumping polish rod of the present invention, it is characterized in that: nipple, extension bar, bearing pin, extension bar two ends are interface inserted sheet, and one end is odd number, the other end is even number, nipple comprises even number of threads joint and odd thread joint, even number of threads joint one end is for connecting screw thread, the other end is even number interface inserted sheet, odd thread joint one end is for connecting screw thread, the other end is odd number interface inserted sheet, even number of threads joint coordinates with the odd number interface inserted sheet end of extension bar, odd thread joint coordinates with the even number interface inserted sheet end of extension bar, on the interface inserted sheet of nipple and extension bar, pin-and-hole is all set, even number of threads joint and extension bar, the connected mode that odd thread joint and extension bar are all arranged in pin-and-hole by bearing pin links together.
The present invention can also comprise:
1, on described nipple, be provided for the fixing groove of spanner.
2, the quantity of extension bar is at least two, connected by interface inserted sheet and bearing pin separately between extension bar.
Advantage of the present invention is: the present invention has flexibility, is easy to the features such as wellhead polish rod sealing, high strength, long-life.
Accompanying drawing explanation
Fig. 1 a is structural representation a of the present invention, and Fig. 1 b is structural representation b of the present invention;
Fig. 2 a is connection rod structure figure a of the present invention, and Fig. 2 b is connection rod structure figure b of the present invention;
Fig. 3 a is odd thread junction composition a of the present invention, and Fig. 3 b is odd thread junction composition b of the present invention, and Fig. 3 c is A-A sectional view;
Fig. 4 a is even number of threads junction composition a of the present invention, and Fig. 4 b is even number of threads junction composition b of the present invention, and Fig. 4 c is B-B sectional view;
Fig. 5 is pin shaft structure figure.
The specific embodiment
Below in conjunction with accompanying drawing, for example the present invention is described in more detail:
In conjunction with Fig. 1～5, the present invention is comprised of even number of threads joint 1, some extension bars 2, bearing pin 3, odd thread joint 4.Overall appearance is cylindrical, and total length can be realized by the quantity of increase and decrease extension bar 2, and extension bar or joint can rotate in the same direction at bearing pin place, and end part of pin shaft is lower than external surface, and connection form is with current general oil pumping polish rod.
2 liang of end interface inserted sheet quantity of extension bar are different, and one end is odd number, and the other end is even number, sees Fig. 2.Two ends inserted sheet is identical in pin-and-hole section part cross section, to guarantee having maximum hot strength.Extension bar external diameter series is with common polish rod series, as 25(25.4), 28(28.6), 32(31.8), 38(38.1) etc.The column part that has certain length between the inserted sheet of extension bar two ends, for sealing.Two ends pin-and-hole distance is the pitch of standard chain.
Nipple 1 and 4 one end are for connecting screw thread, the inserted sheet of the other end for matching with extension bar 2, and inserted sheet quantity is divided respectively even number and odd number, and is middlely useful on the fixing position of spanner, sees Fig. 3.Screw thread specification series is with oil pumping polish rod standard, and connection screw thread is external screw thread.
Bearing pin 3 one end are large globular model formula, and the other end is inner hollow core drum forms, sees Fig. 4.Also can two ends be all drum forms.When assembling, make hollow cylinder end outward flanging, reach reliable fixing object.The extension bar pin-and-hole of bearing pin and its adjacent inserted sheet in end adopts interference fit, and both do not rotate.Bearing pin and another extension bar pin-and-hole adopt matched in clearance, can mutually rotate.
High-strength flexible pumping rod assembly adopts the manufacture of high-strength alloy Steel material, and through appropriate heat treatment technique, thereby guarantee high strength, wear-resisting and long-life.
Enforcement of the present invention is divided into two kinds of modes, and the one, for times journey oil pumper and many wells new pumping units such as oil recovery center, the 2nd, substitute existing oil pumping polish rod.
For new pumping unit, mainly solve the problem of transmission of power and wellhead sealing, it is corresponding with oil pipe phase shape that its place sees shape, makes it have maximum tension sectional dimension.Bearing pin place adopts uniform section design and adopts high-strength material, all will improve its intensity.The specific embodiment is: the nipple 1 of flexible rod one end or 4 and underground sucker rod be connected, above well head, by a guide wheel, make sucker rod vertically enter well head.The other end is fixing in oil production machine, realizes this sucker rod and moves back and forth, thereby complete oil pumping work by oil pumper.Wellhead sealing can adopt the seal form of corresponding special use.
The present invention coordinates with corresponding sealing device, and alternative former polished rod and sealing device can effectively solve the problems such as eccentric wear, seepage, the large and frequent maintenance of frictional resistance.Owing to having adopted multiple screws joint form, and meet the respective standard of existing oil pumping polish rod, therefore can more conveniently change.The specific embodiment is: according to oil pumping polish rod, determine length and the specification of this flexible oil pumping polished rod, coordinate corresponding sealing to change former polished rod and sealing device.
Claims (3)
1. a high-strength flexible oil pumping polish rod, it is characterized in that: nipple, extension bar, bearing pin, extension bar two ends are interface inserted sheet, and one end is odd number, the other end is even number, nipple comprises even number of threads joint and odd thread joint, even number of threads joint one end is for connecting screw thread, the other end is even number interface inserted sheet, odd thread joint one end is for connecting screw thread, the other end is odd number interface inserted sheet, even number of threads joint coordinates with the odd number interface inserted sheet end of extension bar, odd thread joint coordinates with the even number interface inserted sheet end of extension bar, on the interface inserted sheet of nipple and extension bar, pin-and-hole is all set, even number of threads joint and extension bar, the connected mode that odd thread joint and extension bar are all arranged in pin-and-hole by bearing pin links together.
2. a kind of high-strength flexible oil pumping polish rod according to claim 1, is characterized in that: on described nipple, be provided for the fixing groove of spanner.
3. a kind of high-strength flexible oil pumping polish rod according to claim 1 and 2, is characterized in that: the quantity of extension bar is at least two, connected by interface inserted sheet and bearing pin separately between extension bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205223.2A CN102720438B (en) | 2012-06-20 | 2012-06-20 | High-strength flexible oil-pumping polished rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205223.2A CN102720438B (en) | 2012-06-20 | 2012-06-20 | High-strength flexible oil-pumping polished rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102720438A CN102720438A (en) | 2012-10-10 |
| CN102720438B true CN102720438B (en) | 2014-10-22 |
Family
ID=46946287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210205223.2A Expired - Fee Related CN102720438B (en) | 2012-06-20 | 2012-06-20 | High-strength flexible oil-pumping polished rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102720438B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111472693A (en) * | 2020-05-06 | 2020-07-31 | 中电天威（锦州）石油技术装备有限公司 | Laminated type windable oil pumping polished rod and manufacturing method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2334868Y (en) * | 1998-05-04 | 1999-08-25 | 地质矿产部勘探技术研究所 | High-strength flexible drilling rod |
| CN2903340Y (en) * | 2006-04-03 | 2007-05-23 | 李铭 | Bended sucker rod centering guide |
| RU2310733C2 (en) * | 2006-01-10 | 2007-11-20 | Государственное образовательное учреждение высшего профессионального образования "Уфимский государственный нефтяной технический университет" | Sucker rod string |
| CN101550807A (en) * | 2009-05-15 | 2009-10-07 | 大庆油田有限责任公司 | Complex function unit sucker rod string |
| CN201883953U (en) * | 2010-12-07 | 2011-06-29 | 大庆市汇成科技开发有限公司 | High-strength wear-resistant continuous flexible sucker rod |
| CN202755909U (en) * | 2012-06-20 | 2013-02-27 | 哈尔滨工程大学 | High-strength flexible oil pumping polished rod |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020108757A1 (en) * | 2001-01-17 | 2002-08-15 | Traylor Leland Bruce | Submersible pump suspension system |
-
2012
- 2012-06-20 CN CN201210205223.2A patent/CN102720438B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2334868Y (en) * | 1998-05-04 | 1999-08-25 | 地质矿产部勘探技术研究所 | High-strength flexible drilling rod |
| RU2310733C2 (en) * | 2006-01-10 | 2007-11-20 | Государственное образовательное учреждение высшего профессионального образования "Уфимский государственный нефтяной технический университет" | Sucker rod string |
| CN2903340Y (en) * | 2006-04-03 | 2007-05-23 | 李铭 | Bended sucker rod centering guide |
| CN101550807A (en) * | 2009-05-15 | 2009-10-07 | 大庆油田有限责任公司 | Complex function unit sucker rod string |
| CN201883953U (en) * | 2010-12-07 | 2011-06-29 | 大庆市汇成科技开发有限公司 | High-strength wear-resistant continuous flexible sucker rod |
| CN202755909U (en) * | 2012-06-20 | 2013-02-27 | 哈尔滨工程大学 | High-strength flexible oil pumping polished rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102720438A (en) | 2012-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202249964U (en) | Pulley assembly | |
| CN102720438B (en) | High-strength flexible oil-pumping polished rod | |
| CN202755909U (en) | High-strength flexible oil pumping polished rod | |
| CN204960898U (en) | Long stroke beam -pumping unit based on reciprocal lead screw | |
| CN201254956Y (en) | Anti-biasing-wear hollow sucker rod | |
| CN202510043U (en) | Downhole oil production device with non-metallic sucker rod | |
| CN2934555Y (en) | Oil pipe tension anchoring compensator | |
| CN103195397B (en) | Mechanical jack type hydraulic pressure twin-well oil-pumping machine | |
| CN203098225U (en) | Whole cylinder oil pump | |
| CN203066891U (en) | Flexible cardan shaft assembly in screw drill | |
| CN200946461Y (en) | Pumping rod weighting tube | |
| CN202767905U (en) | Eccentric wear resistant sucker-rod string | |
| CN204024957U (en) | The mining plunger pump of many groups herringbone gear transmission | |
| CN202832247U (en) | Anti-tripping water power pressure device | |
| CN203603849U (en) | Multifunctional deloading and benefit increasing device | |
| CN203161104U (en) | Straightening abrasion-proof hollow sucker rod | |
| CN202731764U (en) | Wax removal eccentric-wear-preventing type hollow sucker rod | |
| CN203867479U (en) | Anti-attrition righting sucker rod | |
| CN202745732U (en) | Low friction resistance sucker rod centralizer | |
| CN203066896U (en) | Eccentric sucker rod wear preventing centralizer | |
| CN202900062U (en) | High strength sucker rod with small rod body and large threads | |
| CN202867146U (en) | Long stroke sand prevention oil well pump | |
| CN202867168U (en) | Deviation rectifying device of oil well pump | |
| CN201025260Y (en) | Deviated friction prevention and heavy oil sucker rod | |
| CN2784574Y (en) | Rotary centralizer for sucker rod |
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 |
Granted publication date: 20141022 Termination date: 20200620 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |