CN104533765A - Double-fixation scale-blockage-preventing long-plunger sand-preventing oil well pump - Google Patents
Double-fixation scale-blockage-preventing long-plunger sand-preventing oil well pump Download PDFInfo
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- CN104533765A CN104533765A CN201410634344.8A CN201410634344A CN104533765A CN 104533765 A CN104533765 A CN 104533765A CN 201410634344 A CN201410634344 A CN 201410634344A CN 104533765 A CN104533765 A CN 104533765A
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- oil well
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Abstract
The invention discloses a double-fixation scale-blockage-preventing long-plunger sand-preventing oil well pump. The double-fixation scale-blockage-preventing long-plunger sand-preventing oil well pump comprises an outer pipe, and pump cylinders arranged in the outer pipe at intervals, wherein the upper end of the outer pipe is connected with an extension nipple through an oil pipe righting coupling; the inner surface of the oil pipe righting coupling is provided with multiple inner righting blocks, and is in environment-friendly contact with the outer surfaces of the pump cylinders; the upper ends of the pump cylinders are connected with righting bodies through threads, and the lower end surfaces of the pump cylinders are pressed against the upper end surfaces of the inner righting blocks of the oil pipe righting coupling; the lower ends of the pump cylinders are connected with pump cylinder lengthening pipes through pump cylinder couplings; righting blocks of the righting bodies are respectively in support contact with the inner wall of the extension nipple in all directions; external threads are arranged at the lower ends of pump cylinder lengthened pipes, and the lower ends of the pump cylinder lengthened pipes are in threaded fit and connection with lower joints; external threads are arranged on the outer surfaces of the upper ends of the lower joints and the lower end of the outer pipe; and the lower joints and the outer pipe are in fit and connection through lower couplings. The double-fixation scale-blockage-preventing long-plunger sand-preventing oil well pump is simple in structure, convenient for use, effectively reduced in shaking in an oil well, improved in pumping efficiency, and prolonged in service life.
Description
Technical field
The present invention relates to field of petroleum machinery, particularly a kind of oil field long plunger type sand-control oil well pump.
Background technique
The exploitation in oil field enters high water cut rate, and salinity, the corrosion ability of oil well significantly strengthen, and shakes out, the situation such as fouling is day by day serious, very easily cause fouling holddown, had a strong impact on oily well yield.Antiscale card oil well pump adopts long-plunger, short pump barrel special construction, and pump barrel has outer tube.If any dirt in this structure guarantee well, the annular space between pump barrel and outer tube can be deposited on; During due to oil producing operation, pump barrel easily swings in inside and pump efficiency is low, adopts for this reason and uses steel righting pawl, in use easily cause oil well pump outer tube to bore a hole and grind and leak, and soft righting pawl effect is bad for antiscale holddown.
Summary of the invention
For above-mentioned defect, the invention provides that a kind of structure is simple, reasonable in design, the two fixing antiscale card long plunger type sand-control oil well pump of safety and stability, easily rock in oil well to solve existing oil well pump, the low and defect that working life is short of pump efficiency.
Technological scheme of the present invention is: the pump barrel comprising outer tube and be interval with in it, and forms annular space space between outer tube and pump barrel; Install the long-plunger be mated in described pump barrel, the upper end of described outer tube connects extension nipple by oil pipe righting box cupling, and the internal surface of described oil pipe righting box cupling is provided with multiple interior righting block and is that environment protection-type contacts with the outer surface of pump barrel; The upper end of described pump barrel is threaded connection centralizer body and the interior righting block upper-end surface of its lower end surface and described oil pipe righting box cupling connects pump barrel extension pipe against the lower end of, described pump barrel by pump barrel box cupling; Described centralizer body comprises cylindrical shell body and its internal surface is provided with the internal thread with pump barrel screw-thread fit, and the outer surface of described cylindrical shell body is provided with multiple outer righting block of dispersing and outer righting block to support with the inwall of extension nipple respectively to surrounding and contacts; The lower end of described pump barrel extension pipe is provided with outside thread and connects lower contact by screw-thread fit, and the outer surface of described lower contact upper end and outer tube lower end is equipped with outside thread and is connected by lower box cupling therebetween.
Such scheme can more preferably:
Described outer righting block and interior righting block are three.
Structure of the present invention is simple, easy to use, can effectively reduce oil well pump and rock in oil well, improves pump efficiency, and then extends the working life of oil well pump.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the side view of centralizer body in Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the side view of oil pipe righting box cupling in Fig. 1;
Fig. 5 is the B-B sectional view of Fig. 2;
In figure: 1, outer tube, 2, pump barrel, 3, long-plunger, 4, centralizer body, 5, oil pipe righting box cupling, 6, extension nipple, 7, pump barrel box cupling, 8, pump barrel extension pipe, 9, lower contact, 10, lower box cupling, 11, outer righting block, 12, interior righting block.
Embodiment
With reference to Fig. 1-5, a kind of two fixing antiscale card long plunger type sand-control oil well pump, the pump barrel 2 comprising outer tube 1 and be interval with in it, and form annular space space between outer tube 1 and pump barrel 2; The long-plunger 3 be mated is installed in pump barrel 2, the upper end of outer tube 1 connects extension nipple 6 (can be used for connected pipes box cupling) by oil pipe righting box cupling 5, and the internal surface of oil pipe righting box cupling 5 is provided with multiple interior righting block 12 and is that environment protection-type contacts with the outer surface of pump barrel 2; The upper end of pump barrel 2 be threaded connection centralizer body 4 and interior righting block 12 upper-end surface of its lower end surface and oil pipe righting box cupling 5 against, the lower end of pump barrel 2 connects pump barrel extension pipe 8 by pump barrel box cupling 7; Centralizer body 4 comprises cylindrical shell body and its internal surface is provided with the internal thread with pump barrel 2 screw-thread fit, and the outer surface of cylindrical shell body is provided with multiple outer righting block 11 of dispersing and outer righting block 11 to support with the inwall of extension nipple 6 respectively to surrounding and contacts; The lower end of pump barrel extension pipe 8 is provided with outside thread and connects lower contact 9 by screw-thread fit, and the outer surface of lower contact 9 upper end and outer tube 1 lower end is equipped with outside thread and is connected by lower box cupling 10 therebetween.
Main advantage of the present invention is: the pump barrel of two fixing antiscale card oil well pump adopts screw thread to realize being fixed together with outer tube entirety up and down, specific as follows: upper barrel is threaded connection centralizer body 4(can be chosen as steel), then centralizer body 4 to be fixed on oil pipe righting box cupling 5 thus relative fixing with outer tube 1 top; Lower barrel is fixed by screw thread with lower contact 9 by pump barrel extension pipe 8 is fixing, and is fixed as one with outer tube 1 bottom by lower box cupling 10.Above-mentioned Placement can prevent pump barrel from swinging in inside, ensure that the sealing effect of screw thread in long-time using process, improves pump efficiency, and then extends the working life of oil well pump.
Claims (2)
1. a two fixing antiscale card long plunger type sand-control oil well pump, the pump barrel comprising outer tube and be interval with in it, and between outer tube and pump barrel, form annular space space; The long-plunger be mated is installed in described pump barrel, it is characterized in that: the upper end of described outer tube connects extension nipple by oil pipe righting box cupling, and the internal surface of described oil pipe righting box cupling is provided with multiple interior righting block and is that environment protection-type contacts with the outer surface of pump barrel; The upper end of described pump barrel is threaded connection centralizer body and the interior righting block upper-end surface of its lower end surface and described oil pipe righting box cupling connects pump barrel extension pipe against the lower end of, described pump barrel by pump barrel box cupling; Described centralizer body comprises cylindrical shell body and its internal surface is provided with the internal thread with pump barrel screw-thread fit, and the outer surface of described cylindrical shell body is provided with multiple outer righting block of dispersing and outer righting block to support with the inwall of extension nipple respectively to surrounding and contacts; The lower end of described pump barrel extension pipe is provided with outside thread and connects lower contact by screw-thread fit, and the outer surface of described lower contact upper end and outer tube lower end is equipped with outside thread and is connected by lower box cupling therebetween.
2. two fixing antiscale card long plunger type sand-control oil well pump according to claim 1, is characterized in that: described outer righting block and interior righting block are three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634344.8A CN104533765A (en) | 2014-11-12 | 2014-11-12 | Double-fixation scale-blockage-preventing long-plunger sand-preventing oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634344.8A CN104533765A (en) | 2014-11-12 | 2014-11-12 | Double-fixation scale-blockage-preventing long-plunger sand-preventing oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104533765A true CN104533765A (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410634344.8A Pending CN104533765A (en) | 2014-11-12 | 2014-11-12 | Double-fixation scale-blockage-preventing long-plunger sand-preventing oil well pump |
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| CN (1) | CN104533765A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086956A (en) * | 2017-12-13 | 2018-05-29 | 沈阳新城石油机械制造有限公司 | A kind of novel submersible electrical plunger pump |
| CN110617202A (en) * | 2019-10-12 | 2019-12-27 | 克拉玛依胜利高原机械有限公司 | Bridge type injection and suction sand-proof pump |
| CN114687707A (en) * | 2020-12-29 | 2022-07-01 | 中国石油化工股份有限公司 | Quick flowing back tubular column of machine pump anti-sticking |
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| CN201187435Y (en) * | 2007-12-10 | 2009-01-28 | 王杰林 | Multifunctional sand deposition type oil well pump |
| CN201554633U (en) * | 2009-10-16 | 2010-08-18 | 中船重工中南装备有限责任公司 | Falling object protective oil pump capable of performing annulus logging |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086956A (en) * | 2017-12-13 | 2018-05-29 | 沈阳新城石油机械制造有限公司 | A kind of novel submersible electrical plunger pump |
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| CN110617202A (en) * | 2019-10-12 | 2019-12-27 | 克拉玛依胜利高原机械有限公司 | Bridge type injection and suction sand-proof pump |
| CN114687707A (en) * | 2020-12-29 | 2022-07-01 | 中国石油化工股份有限公司 | Quick flowing back tubular column of machine pump anti-sticking |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20150422 |