CN202833087U - Self-help separated lubricating anti-eccentric-abrasion device of sucker rod pump well with high water content - Google Patents
Self-help separated lubricating anti-eccentric-abrasion device of sucker rod pump well with high water content Download PDFInfo
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- CN202833087U CN202833087U CN 201220484227 CN201220484227U CN202833087U CN 202833087 U CN202833087 U CN 202833087U CN 201220484227 CN201220484227 CN 201220484227 CN 201220484227 U CN201220484227 U CN 201220484227U CN 202833087 U CN202833087 U CN 202833087U
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Abstract
The utility model provides a self-help separated lubricating anti-eccentric-abrasion device of a sucker rod pump well with high water content. The self-help separated lubricating anti-eccentric-abrasion device comprises a production tubing which is positioned inside a casing pipe, wherein an upper opening of the production tubing is provided with a polish rod, the inside of the production tubing is further provided with a wellhead sealed pump, the upper end of the wellhead sealed pump is connected with the polish rod, and the lower end of the wellhead sealed pump is connected with a hollow rod. The lower end of the hollow rod is connected with an oil well pump plunger pulling rod through a liquid inlet connector of the hollow rod, and the lower portion of the oil well pump plunger pulling rod is connected with an oil well pump. A pump cylinder of the oil well pump is connected and fixed on the inner wall of the production tubing outside the oil well pump in a threaded mode, and the lower end of the pump cylinder of the oil well pump is connected with a tail pipe. According to the self-help separated lubricating anti-eccentric-abrasion device of the sucker rod pump well with the high water content, the idea that gravity self-help oil water separation is utilized in the sucker rod pump well with the high water content so as to achieve tube-rod lubrication is adopted, and the problems of tube-rod eccentric abrasion and corrosion are solved. A traditional prevention and treatment idea is changed, the effect is better, big changes can not be conducted for an original sucker rod pump system, part of equipment of the original sucker rod pump system can be utilized, operation is simple, and relative cost is low.
Description
Technical field
The utility model relates to the side-abrasion of rod string prevention and control field of high water-containing rod pumped oil recovery well, relates in particular to the anti-eccentric wearing device of the self-service separation lubrication of a kind of high water-containing rod pumped well.
Background technique
The oil field enters the high water-cut development stage, and great changes have all occured pit shaft situation and production fluid character etc., and rod pump system works environment progressively worsens, and has aggravated the rod and tube partial-wear degree; In the eccentric wear well, moisture content〉80% account for more than 75%; Height is moisture to be the basic reason of rod pump pipe bar generation eccentric wear, corrosion.
For on-the-spot eccentric wear present situation, adopting at present anti-eccentric wear measure mainly is to adopt oil pumping rod centering device, abrasion resistance pair etc.Its basic ideas are to allow centralizer serve as the third party, do not allow the pipe bar directly contact, to high water-cut well, and the sucker rod stabilizing weak effect, self serious wear, the cycle is short, changes simultaneously the force-bearing situation of rod string, strengthens polished rod load, the also wear problem of existence own; Anti-wear pair for sucker rods, on-the-spot subject matter are that stuck phenomenon appears in centralizer body and the body of rod easily, and it is ancient to be equivalent to common eccentric wear joint after stuck, and cost is high, and scope is promoted the use of at the scene of impact; Although the resilient support centralizer can partly address the above problem, directly at body of rod two ends processing screw thread, cause body of rod screw thread end intensity low, easily fracture; Although wear-resistant pipe bar can improve the wear resistance of pipe bar to a certain extent, reduce wear rate, pump detection period has certain prolongation, and processing technology own is complicated, and cost is high, and has the phenomenon of pitting corrosion; Macromolecular material liner oil pipe can improve the contact friction of pipe bar, but has the problems such as material aging, later stage repair process difficulty; Also utilize at present the hollow stem centre as well liquid passage, adopt the mode of oil pipe and the oiling of hollow stem annular space before completion or after the completion, but the oiling complex process increases cost, increases workload; Simultaneously, the hollow stem bar wall that uses at present is thicker, and runner is little, from great, increases oil pumping machine polished rod load, and power consumption increases, and can not realize deeply taking out, and therefore, uses limited.In a word, although present high water-containing rod pumped well pipe bar eccentric wear-proof process has been obtained certain progress, general thought also rests on the aspect of righting, wear-resistant, anti-attrition, can not fundamentally solve the eccentric wear problem of high water-containing rod pumped well.
Summary of the invention
The purpose of this utility model provide a kind of reasonable in design, can effectively improve defects, utilize the self-service oil-water separation of gravity to realize that the lubricated thinking of pipe bar solves the anti-eccentric wearing device of the self-service separation lubrication of high water-containing rod pumped well of the eccentric wear of pipe bar, etching problem by adopting high water-containing rod pumped well.Change traditional control method, had better effect, can not do large change to original rod pump system, can utilize the equipment component of existing rod pump system, and simple to operate, relative cost is low.
The purpose of this utility model can realize by following technical solution:
The anti-eccentric wearing device of the self-service separation lubrication of this high water-containing rod pumped well mainly comprises the production tube that is positioned at sleeve pipe, at the production tube polished rod that arranges suitable for reading, described production tube inside also is provided with the wellhead sealing pump, wellhead sealing pump upper end is connected with polished rod, the lower end is connected with hollow stem, described hollow stem lower end is connected with the oil pump plunger piston pull bar by the hollow stem liquid inlet joint, described oil pump plunger piston pull bar below connects to live oil well pump, the pump barrel of oil well pump then is connected and fixed by engage thread with the production tube inwall of self outside, and the pump barrel lower end of described oil well pump then is connected with tail pipe.
The purpose of this utility model also can realize by following technical solution:
Described wellhead sealing pump is comprised of wellhead sealing pump plunger and wellhead sealing pump pump barrel, and the wellhead sealing pump plunger moves in wellhead sealing pump pump barrel, has each other matching gap, forms motive sealing.
Hollow in the middle of the described wellhead sealing pump plunger, as the Produced Liquid flow pass, and wellhead sealing pump plunger upper end has liquid outlet opening.
Lower end and the hollow stem of described wellhead sealing pump plunger are threaded connection, the lower end of hollow stem and hollow stem liquid inlet joint are threaded connection, the lower end of hollow stem liquid inlet joint and oil pump plunger piston pull bar are threaded connection, and the plunger of oil pump plunger piston pull bar lower end and oil well pump is threaded connection; Wellhead sealing pump pump barrel lower end and production tube are threaded connection.
Have inlet opening around the described hollow stem liquid inlet joint; Described hollow stem two ends are thicker than middle part body, and central hollow.
In oil pumping process, entering hollow stem by the hollow stem liquid inlet joint during upstroke separates by gravity is self-service with the Produced Liquid of the annular space of oil pipe, the crude oil that a part is separated is stayed in the annular space, because oil density is general all less than the density of water, the water that upper line replacement consubstantiality is long-pending, another part enters hollow stem by the hollow stem liquid inlet joint when down stroke, isolated crude oil constantly enters the annular space of hollow stem and oil pipe in the Produced Liquid like this, constantly be enriched in the annular space, in the well mouth hanger lower end by the wellhead sealing pump seal, the crude oil of annular space enrichment can not enter flow process, exist in the annular space always, make the lubricated crude oil of the self-service separation of annular space gravity reside in annular space all the time and can not be pumped, thereby the pipe bar of having realized high moisture oil pumping well moves in containing lubricant environment, has reached the purpose of the anti-eccentric wear of pipe bar.
According to routine first oil pump sleeve with the oil pipe G.I.H, wherein the pump barrel of wellhead sealing pump is connected on the bottom of boll-weevil hanger; Then (on demand combination)+wellhead sealing pump plunger+solid hollow polished rod is lowered in the oil pipe oil pump plunger piston cylinder lever connecting rod+hollow stem liquid inlet joint+hollow stem together; The motive sealing pair of wellhead sealing pump pump barrel and plunger formation seals oil pipe and hollow stem annular space like this, in oil pumping process, entering hollow stem by the hollow stem liquid inlet joint during upstroke separates by gravity is self-service with the Produced Liquid of the annular space of oil pipe, the crude oil that a part is separated is stayed in the annular space, because oil density is general all less than the density of water, the water that upper line replacement consubstantiality is long-pending, another part enters hollow stem by the hollow stem liquid inlet joint when down stroke, isolated crude oil constantly enters the annular space of hollow stem and oil pipe in the Produced Liquid like this, constantly be enriched in the annular space, in the well mouth hanger lower end by the wellhead sealing pump seal, the crude oil of annular space enrichment can not enter flow process, there is in the annular space pipe bar in the lubricated motion always.The well liquid that oil well pump is extracted out enters flow process through the passage in the wellhead sealing pump plunger in hollow stem; Well liquid in the hollow stem does not contact mutually with the annular space lubricating oil, thereby guarantee that hollow stem and tube inner wall work under an environment that contains crude oil lubrication, thereby the pipe bar of having realized high moisture oil pumping well moves in containing lubricant environment, fundamentally changes the side-abrasion of rod string phenomenon.
In a word, this invention is simple to operate, increase additional workload can for the maintenance in later stage, on original oil well pump system, do not need significant change, consider from overall cost, also well below the cost of the wear-resistant pipe bar of present use, only increased the cost of a part of hollow stem, and can reuse.
Description of drawings:
Fig. 1 is the utility model embodiment's structural representation;
Structural representation when Fig. 2 is the utility model production after the oil-water separation.
Among the figure: 1-polished rod, 2-wellhead sealing pump plunger, 3-wellhead sealing pump pump barrel, 4-hollow stem, 5-production tube, 6-sleeve pipe, 7-hollow stem liquid inlet joint, 8-oil pump plunger piston pull bar, 9-oil well pump, 10-tail pipe, 11-liquid outlet opening, 12-inlet opening.
Embodiment:
Relevant detailed description of the present utility model and technology contents cooperate description of drawings as follows, yet accompanying drawing only provides the usefulness of reference with explanation, and the utility model is limited.
See figures.1.and.2, the self-service separation lubrication of the utility model high water-containing rod pumped well is prevented eccentric wearing device, and polished rod 1 two is processed with screw thread, and an end connects the following wellhead sealing pump plunger 2 of well head, and the other end links to each other with beam hanger for pumping machine.
Wellhead sealing pump plunger 2 among Fig. 1 forms the wellhead sealing pump with wellhead sealing pump pump barrel 3, and plunger moves in pump barrel, and certain matching gap is arranged, and forms motive sealing, and the crude oil of sealing annular space enrichment does not enter flow process, isolates with Produced Liquid; Hollow in the middle of the wellhead sealing pump plunger 2, as the Produced Liquid flow pass, the upper end has liquid outlet opening 11, is used for Produced Liquid and flows out, and enters production procedure.
The lower end of wellhead sealing pump plunger 2 and hollow stem 4 are threaded connection, the lower end of hollow stem 4 and hollow stem liquid inlet joint 7 are threaded connection, the lower end of hollow stem liquid inlet joint 7 and oil pump plunger piston pull bar 8 are threaded connection, and the plunger of oil pump plunger piston pull bar 8 lower ends and oil well pump 10 is threaded connection; Wellhead sealing pump pump barrel 3 lower ends and production tube 5 are threaded connection, and the pump barrel of production tube 5 lower ends and oil well pump 9 is threaded connection, pump barrel lower end union tail 10; The roofbolt string that forms of the plunger of polished rod 1, wellhead sealing pump plunger 2, hollow stem 4, hollow stem liquid inlet joint 7, oil pump plunger piston pull bar 8, oil well pump 9 just moves up and down in the tubing string string of the pump barrel composition of wellhead sealing pump pump barrel 3, production tube 5, oil well pump 9 like this, forms whole oil pumping system.
Have inlet opening 12 around the hollow stem liquid inlet joint 7, the passage of the annular space that forms with hollow stem 7 and production tube 5 in Produced Liquid and the parting liquid turnover hollow stem 7 when being used for oil pumping.
Fig. 1, hollow stem liquid inlet joint 7 shown in Figure 2, oil pump plunger piston pull bar 8, oil well pump 9, tail pipe 10 etc. all be conventional pumping unit recover the oil conventional supporting, no longer narrate here.
Again in conjunction with Fig. 1, the narration of carrying out whole technique shown in Figure 2, the self-service separation lubrication eccentric wear-proof process of high water-containing rod pumped well profit Twin channel gravity, when oil pumping, wellhead sealing pump plunger 2 forms motive sealing in pump barrel 3 interior motions all the time, make annular space crude oil can't enter flow process, it is interior up that the oil inlet passage of the high water-cut well liquid of simultaneously oil well pump 9 extraction by hollow stem liquid inlet joint 7 enters hollow stem 4, the liquid outlet opening 11 of the upper end of process wellhead sealing pump plunger 2, enter flow process, the continuous enrichment of crude oil that relies on Produced Liquid to separate in the annular space that hollow stem 4 and production tube 5 forms is full of, hollow stem is contacted with oil pipe all the time having under the environment of Lubricants work, thereby avoid or alleviated the corrosion of pipe bar, eccentric wear.
The above only is preferred embodiment of the present utility model, and non-in order to limit claim of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to claim of the present utility model.
Claims (5)
1. the self-service separation lubrication of high water-containing rod pumped well is prevented eccentric wearing device, mainly comprise the production tube that is positioned at sleeve pipe, at the production tube polished rod that arranges suitable for reading, it is characterized in that, described production tube inside also is provided with the wellhead sealing pump, wellhead sealing pump upper end is connected with polished rod, the lower end is connected with hollow stem, described hollow stem lower end is connected with the oil pump plunger piston pull bar by the hollow stem liquid inlet joint, described oil pump plunger piston pull bar below connects to live oil well pump, the pump barrel of oil well pump then is connected and fixed by engage thread with the production tube inwall of self outside, and the pump barrel lower end of described oil well pump then is connected with tail pipe.
2. the self-service separation lubrication of a kind of high water-containing rod pumped well according to claim 1 is prevented eccentric wearing device, it is characterized in that, described wellhead sealing pump is comprised of wellhead sealing pump plunger and wellhead sealing pump pump barrel, the wellhead sealing pump plunger moves in wellhead sealing pump pump barrel, have each other matching gap, form motive sealing.
3. the anti-eccentric wearing device of the self-service separation lubrication of a kind of high water-containing rod pumped well according to claim 2 is characterized in that, and is hollow in the middle of the described wellhead sealing pump plunger, and as the Produced Liquid flow pass, and wellhead sealing pump plunger upper end has liquid outlet opening.
4. the self-service separation lubrication of a kind of high water-containing rod pumped well according to claim 2 is prevented eccentric wearing device, it is characterized in that, lower end and the hollow stem of described wellhead sealing pump plunger are threaded connection, the lower end of hollow stem and hollow stem liquid inlet joint are threaded connection, the lower end of hollow stem liquid inlet joint and oil pump plunger piston pull bar are threaded connection, and the plunger of oil pump plunger piston pull bar lower end and oil well pump is threaded connection; Wellhead sealing pump pump barrel lower end and production tube are threaded connection.
5. the anti-eccentric wearing device of the self-service separation lubrication of a kind of high water-containing rod pumped well according to claim 1 is characterized in that, has inlet opening around the described hollow stem liquid inlet joint; Described hollow stem two ends are thicker than middle part body, and central hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220484227 CN202833087U (en) | 2012-09-21 | 2012-09-21 | Self-help separated lubricating anti-eccentric-abrasion device of sucker rod pump well with high water content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220484227 CN202833087U (en) | 2012-09-21 | 2012-09-21 | Self-help separated lubricating anti-eccentric-abrasion device of sucker rod pump well with high water content |
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| Publication Number | Publication Date |
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| CN202833087U true CN202833087U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220484227 Expired - Fee Related CN202833087U (en) | 2012-09-21 | 2012-09-21 | Self-help separated lubricating anti-eccentric-abrasion device of sucker rod pump well with high water content |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840130A (en) * | 2012-09-21 | 2012-12-26 | 张涛 | High-water-content sucker-rod pump well self-help separation lubrication eccentric wear prevention device and method |
| CN103334717A (en) * | 2013-06-08 | 2013-10-02 | 中国石油天然气股份有限公司 | Oil pumping device for oil field oil pumping well |
| CN105257258A (en) * | 2015-11-07 | 2016-01-20 | 李珂 | Abrasion-proof oil pumping device capable of being lubricated |
-
2012
- 2012-09-21 CN CN 201220484227 patent/CN202833087U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840130A (en) * | 2012-09-21 | 2012-12-26 | 张涛 | High-water-content sucker-rod pump well self-help separation lubrication eccentric wear prevention device and method |
| CN103334717A (en) * | 2013-06-08 | 2013-10-02 | 中国石油天然气股份有限公司 | Oil pumping device for oil field oil pumping well |
| CN105257258A (en) * | 2015-11-07 | 2016-01-20 | 李珂 | Abrasion-proof oil pumping device capable of being lubricated |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130327 Termination date: 20140921 |
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| EXPY | Termination of patent right or utility model |