CN202755909U - High-strength flexible oil pumping polished rod - Google Patents
High-strength flexible oil pumping polished rod Download PDFInfo
- Publication number
- CN202755909U CN202755909U CN 201220292105 CN201220292105U CN202755909U CN 202755909 U CN202755909 U CN 202755909U CN 201220292105 CN201220292105 CN 201220292105 CN 201220292105 U CN201220292105 U CN 201220292105U CN 202755909 U CN202755909 U CN 202755909U
- Authority
- CN
- China
- Prior art keywords
- odd
- extension bar
- joint
- connector plug
- inserted sheet
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a high-strength flexible oil pumping polished rod which is composed of screwed joints, connecting rods and pin shafts. Two ends of one connecting rod are respectively provided with connector plug-in pieces, the number of the connector plug-in pieces at one end of the connecting rod is odd, and the number of the connector plug-in pieces at the other end of the connecting rod is even. The screwed joints comprise an even screwed joint and an odd screwed joint. One end of the even screwed joint is provided with connecting threads, and the other end of the even screwed joint is provided with even connector plug-in pieces. One end of the odd screwed joint is provided with connecting threads, and the other end of the odd screwed joint is provided with odd connector plug-in pieces. The even screwed joint is matched with the odd connector plug-in piece end of one connecting rod. The odd screwed joint is matched with the even connector plug-in piece end of the connecting rod. The screwed joints and the connector plug-in pieces of the connecting rods are all provided with pin holes. The even screwed joint is connected with the connecting rod through a pin shaft arranged in the pin holes, and the odd screwed joint is connected with the connecting rod through a pin shaft arranged in the pin holes. The high-strength flexible oil pumping polished rod has the advantages of having flexibility, being capable of easily sealing a well mouth, high in strength and long in service life, and the like.
Description
Technical field
The utility model relates to 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.The 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 it is the rigid structures of smooth in appearance, is positioned at well head, and cooperates with corresponding sealing device, realizes the mouth of pumped oil well sealing in the oil pumping stroke.
Along with the continuous exploitation in oil field, the quantity of stripper well increases, and the energy consumption that adopts for reducing machinery individual well times journey oil pumper and many wells have occurred in succession with new pumping units such as oil recovery centers, has changed the in the past working method of the well head oil pumping polish rod of beam-pumping unit.Require sucker rod to have 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, have the intensity high, do not have flexibility, can not be used for new-type oil pumper.Adopt common chain, steel cable etc. as sucker rod, although have flexibility, exist wellhead sealing and intensity to hang down problem.
Summary of the invention
The purpose of this utility model is to provide a kind of high-strength flexible oil pumping polish rod that can effectively solve the sucker rod partial wear problem.
The purpose of this utility model is achieved in that
A kind of high-strength flexible oil pumping polish rod of the utility model, it is characterized in that: nipple, extension bar, bearing pin, the extension bar two ends are the interface inserted sheet, and an 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 cooperates with the odd number interface inserted sheet end of extension bar, the odd thread joint cooperates 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 set all, even number of threads joint and extension bar, odd thread joint and extension bar all link together by the connected mode that bearing pin is installed in the pin-and-hole.
The utility model can also comprise:
1, is provided for the fixing groove of spanner on the described nipple.
2, the quantity of extension bar is at least two, and is continuous by separately interface inserted sheet and bearing pin between the extension bar.
Advantage of the present utility model is: the utlity model has flexibility, be easy to the characteristics such as wellhead polish rod sealing, high strength, long-life.
Description of drawings
Fig. 1 a is structural representation a of the present utility model, and Fig. 1 b is structural representation b of the present utility model;
Fig. 2 a is connection rod structure figure a of the present utility model, and Fig. 2 b is connection rod structure figure b of the present utility model;
Fig. 3 a is odd thread junction composition a of the present utility model, and Fig. 3 b is odd thread junction composition b of the present utility model, and Fig. 3 c is the A-A sectional view;
Fig. 4 a is even number of threads junction composition a of the present utility model, and Fig. 4 b is even number of threads junction composition b of the present utility model, and Fig. 4 c is the B-B sectional view;
Fig. 5 is pin shaft structure figure.
The specific embodiment
For example the utility model is described in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～5, the utility model 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 realize that extension bar or joint can rotate in the same direction at the bearing pin place by the quantity of increase and decrease extension bar 2, and end part of pin shaft is lower than external surface, and the connection form is with present general oil pumping polish rod.
2 liang of end interface inserted sheets of extension bar quantity is different, and an end is odd number, and the other end is even number, sees Fig. 2.The 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, such as 25(25.4), 28(28.6), 32(31.8), 38(38.1) etc.The column part that certain-length is arranged between the inserted sheet of extension bar two ends is used for sealing.Two ends pin-and-hole distance is the pitch of standard chain.
Nipple 1 and 4 one ends are for connecting screw thread, and the other end is the inserted sheet that matches with extension bar 2, and inserted sheet quantity is divided respectively even number and odd number, and the middle fixing position of spanner that is useful on, and see Fig. 3.The screw thread specification series is with the oil pumping polish rod standard, and the connection screw thread is external screw thread.
Bearing pin 3 one ends are large globular model formula, and the other end is the inner hollow core drum forms, sees Fig. 4.Can two ends all be drum forms also.When assembling, make hollow cylinder end outward flanging, reach reliable fixing purpose.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 manufacturing 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 utility model is divided into dual mode, 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.
Be used for the problem that new pumping unit mainly solves transmission of power and wellhead sealing, it is corresponding with oil pipe phase shape that its place sees shape, makes it have the maximum tension sectional dimension.The bearing pin place adopts the 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 link, above well head, make sucker rod vertically enter well head by a guide wheel.The other end is fixing in oil production machine, realizes that by oil pumper this sucker rod moves back and forth, thereby finishes oil pumping work.Wellhead sealing can adopt the seal form of corresponding special use.
The utility model cooperates 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 adopted the multiple screws joint form, and met the respective standard of existing oil pumping polish rod, therefore can more conveniently change.The specific embodiment is: determine length and the specification of this flexible oil pumping polished rod to cooperate corresponding sealing to change former polished rod and sealing device according to oil pumping polish rod.
Claims (3)
1. high-strength flexible oil pumping polish rod, it is characterized in that: nipple, extension bar, bearing pin, the extension bar two ends are the interface inserted sheet, and an 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 cooperates with the odd number interface inserted sheet end of extension bar, the odd thread joint cooperates 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 set all, even number of threads joint and extension bar, odd thread joint and extension bar all link together by the connected mode that bearing pin is installed in the pin-and-hole.
2. a kind of high-strength flexible oil pumping polish rod according to claim 1 is characterized in that: be provided for the fixing groove of spanner on the described nipple.
3. a kind of high-strength flexible oil pumping polish rod according to claim 1 and 2, it is characterized in that: the quantity of extension bar is at least two, and interface inserted sheet and bearing pin by separately between the extension bar link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292105 CN202755909U (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 |
|---|---|---|---|
| CN 201220292105 CN202755909U (en) | 2012-06-20 | 2012-06-20 | High-strength flexible oil pumping polished rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202755909U true CN202755909U (en) | 2013-02-27 |
Family
ID=47735096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220292105 Withdrawn - After Issue CN202755909U (en) | 2012-06-20 | 2012-06-20 | High-strength flexible oil pumping polished rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202755909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720438A (en) * | 2012-06-20 | 2012-10-10 | 哈尔滨工程大学 | High-strength flexible oil-pumping polished rod |
-
2012
- 2012-06-20 CN CN 201220292105 patent/CN202755909U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720438A (en) * | 2012-06-20 | 2012-10-10 | 哈尔滨工程大学 | High-strength flexible oil-pumping polished rod |
| CN102720438B (en) * | 2012-06-20 | 2014-10-22 | 哈尔滨工程大学 | High-strength flexible oil-pumping polished rod |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202249964U (en) | Pulley assembly | |
| CN206663118U (en) | Wellbore pump piston replacer | |
| CN202755909U (en) | High-strength flexible oil pumping polished rod | |
| CN201273154Y (en) | Elastic centralizer for pumping rod | |
| CN102720438B (en) | High-strength flexible oil-pumping polished rod | |
| CN101215961A (en) | T-type beam structure energy-saving oil pumping machine | |
| CN201254956Y (en) | Anti-biasing-wear hollow sucker rod | |
| CN202510043U (en) | Downhole oil production device with non-metallic sucker rod | |
| CN204729022U (en) | A kind of multi-point support type ocean drill rod threaded nipple | |
| CN200946461Y (en) | Pumping rod weighting tube | |
| CN202767905U (en) | Eccentric wear resistant sucker-rod string | |
| CN201818249U (en) | Positioning anti-eccentric wear device | |
| CN201031667Y (en) | Open teeth type energy conservation beam-pumping unit | |
| CN202832247U (en) | Anti-tripping water power pressure device | |
| CN201284628Y (en) | Centralizer of screw pump transmission bar | |
| RU102047U1 (en) | ASSEMBLY OF THE COLUMN OF THE BAR, BAR AND COUPLING | |
| CN202731764U (en) | Wax removal eccentric-wear-preventing type hollow sucker rod | |
| CN203066896U (en) | Eccentric sucker rod wear preventing centralizer | |
| CN202645459U (en) | Sucker rod provided with inclined connection faces | |
| CN216341949U (en) | Anti-corrosion and anti-eccentric wear sucker rod coupling | |
| CN201851027U (en) | Pumping-aid and sucker rod dropout prevention integral device | |
| CN2929143Y (en) | Anti-bias wear oil pumping rod | |
| CN201835796U (en) | Ball screw switching mechanism for underground oil production | |
| CN207278204U (en) | Easy-to-mount sucker rod anti-abrasion device | |
| CN2900759Y (en) | Combined anti-bias friction oil pump rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130227 Effective date of abandoning: 20141022 |
|
| RGAV | Abandon patent right to avoid regrant |