CN201047271Y - Oil pumping motor-pumped well de-loading machine - Google Patents
Oil pumping motor-pumped well de-loading machine Download PDFInfo
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- CN201047271Y CN201047271Y CNU2006201470170U CN200620147017U CN201047271Y CN 201047271 Y CN201047271 Y CN 201047271Y CN U2006201470170 U CNU2006201470170 U CN U2006201470170U CN 200620147017 U CN200620147017 U CN 200620147017U CN 201047271 Y CN201047271 Y CN 201047271Y
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Abstract
The utility model provides a load reducer for a pumping well, which relates to a down-well tool used for reducing the polished rod load of a horse head of the pumping well, wherein, a walking assembly consists of an on-pole joint, a long plunger, an O-shaped ring, a piston and a bottom-pole joint; a fixed assembly consists of an on-tube joint, the upper pump barrel, the O-shaped ring, the lower pump barrel and a bottom-tube joint; another connecting way is that a fixed assembly consists of the on-tube joint, the upper pump barrel, a strengthening tube, the O-shaped ring, a collar, the lower pump barrel and the bottom-tube joint; the load reducer can greatly reduce the polished rod load of the horse head of the pumping well and realize the comprehensive effect of load reducing, deep pumping, energy saving and production increasing with existing devices by making use of the feedback force of the lower end surface of the piston; the load reducer can reduce the wear and the block of the long plunger; no leakage amount is provided at seal positions between the long plunger and the upper pump barrel and between the piston and the lower pump barrel when pressure of tubing columns of oil well pipes is tested, thus leading the leakage condition of the tubing columns to be easily judged; the upper screw thread and the lower screw thread need little torsion force without damaging the screw threads when the lower joints and the lower oil pipes are connected or dismounted; the load reducer can ensure the normal production of oil wells.
Description
Affiliated technical field
The utility model relates to a kind of downhole tool-rod-pumped well load reducer that the oil exploitation well alleviates the pumping unit horsehead polished rod load that is used for.
Background technology
Both can deepen the pump extension, improve oil well output in order to use existing equipment to reach rod-pumped well, can alleviate the pumping unit horsehead polished rod load again, cut down the consumption of energy, the needs of satisfy that deeply buried reservoir, energy are low, poor permeability, flood effectiveness difference oil well being taken out deeply, in recent years, develop successively and used that oil pumper load reducer, load reducer for petroleum well etc. have off-load, take out deeply, the technical products of energy-conservation, volume increase function.The The field of these technical products, though existing equipment is realized off-load, taken out deeply to solve using, energy-conservation, volume increase etc. has profound significance, but owing to there is following defective, in promoting the use of, be very restricted, cause above-mentioned technical products can not large tracts of land to be promoted so far.These defectives mainly show as: corresponding technical measures is not taked on the top of one, move about assembly and fixation assembly, cross below the liquid passage is a caecum, in the oil well production process, sand grains contained in the output liquid is in this caecum precipitation, very easily cause the assembly epimere wearing and tearing of moving about, even the assembly epimere that will move about is stuck, and oil well is forced to stop production.Two, corresponding technical measures is not taked at the move about sealing position of assembly and fixation assembly, the sealing position is the steel part sealing, certain clearance and wastage are arranged, when the oil well pipe pressure testing, pressure testing equipment is surely incessantly pressed, and steady reason of incessantly pressing is oil well pipe leakage or the leakage of the sealing position of load reducer, is difficult to judge, for the oil well ordinary production is buried certain hidden danger.Three, the move about connecting portion of assembly bottom and well rod is not taked corresponding technical measures, move about assembly with after well rod is connected, the well rod weight of bottom is all born by load reducer, when the outer tube of load reducer is connected with the bottom oil pipe or dismantles, on it, to unload the required torsion of screw thread very big, very easily with thread damage.Four, the move about seal section of the large and small piston of assembly is the steel part sealing, has increased by place's leakage points, has strengthened total wastage of load reducer.
Summary of the invention
In order to overcome the above-mentioned technological deficiency that existing load reducer exists, the utility model provides a kind of rod-pumped well load reducer, this rod-pumped well load reducer can not only alleviate the pumping unit horsehead polished rod load significantly, use resultant effects such as existing equipment just can be realized off-load, takes out deeply, energy-conservation, volume increase, and can reduce the wearing and tearing of long-plunger and be stuck; During the oil well pipe pressure testing, do not have wastage, can judge the leakage situation of tubing string at an easy rate at the sealing position of long-plunger and last pump barrel, piston and following pump barrel; When lower contact is connected with the bottom oil pipe or dismantles, on it, to unload the required torsion of screw thread little, can be with thread damage; Can guarantee the ordinary production of oil well.
The technical scheme that its technical problem that solves the utility model adopts is: pipe top connection 2 be threaded with last pump barrel 3 (O shape is housed in the groove of last pump barrel encloses 5, to guarantee that when the oil well pipe pressure testing, the sealing position does not have wastage); Last pump barrel 3 is threaded with following pump barrel 6; The little external diameter end of long-plunger 4 passes from the endoporus of piston 8, and its major diameter step is sitting on the piston 8 and (has sand washing groove Ф 2 on the top of long-plunger, so that washed away the sand grains at the following caecum of liquid passage place; On the inside and outside circle of piston, install O shape circle additional, to guarantee that when the oil well pipe pressure testing, the sealing position does not have wastage, and reduces total wastage of load reducer); Bar lower contact 9 is threaded with long-plunger 4 and (external diameter of bar lower contact is strengthened, when the pipe lower contact is connected with the bottom oil pipe or dismantles, the weight of bottom sucker rod is transferred on the joint of bottom oil pipe, reduce on it, unload the required torsion of screw thread, guarantee that tubing round thread is not damaged, and the peripheral milling one-tenth of bar lower contact lower end is outer square, after guaranteeing that the bar lower contact sits on the oil pipe of bottom, draining and well-flushing passage are arranged); Long-plunger 4 passes from the following endoporus of pump barrel 6, passes the endoporus of pump barrel 3 again, makes piston 8 endoporus of pump barrel 6 down of packing into, makes pump barrel 3 and long-plunger 4 form friction pairs (3,4), following pump barrel 6 and piston 8 formation friction pairs (6,8); Bar top connection 1 is threaded with long-plunger 4; Pipe lower contact 10 is threaded with following pump barrel 6; Like this, just form the assembly that moves about by bar top connection 1, long-plunger 4, O shape circle 5, piston 8, bar lower contact 9; By pipe top connection 2, go up pump barrel 3, O shape circle 7, fixation assembly is formed in pump barrel 6, pipe lower contact 10 down.
The beneficial effects of the utility model are, this rod-pumped well load reducer can not only alleviate the pumping unit horsehead polished rod load significantly, use resultant effects such as existing equipment just can be realized off-load, takes out deeply, energy-conservation, volume increase.And can reduce the wearing and tearing of long-plunger and be stuck; During the oil well pipe pressure testing, do not have wastage, can judge the leakage situation of tubing string at an easy rate at the sealing position of long-plunger and last pump barrel, piston and following pump barrel; When lower contact is connected with the bottom oil pipe or dismantles, on it, to unload the required torsion of screw thread little, can be with thread damage; Can guarantee the ordinary production of oil well, increase economic efficiency.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the vertical section constructional drawing of first embodiment of the utility model.
Fig. 2 is the B-B sectional view of Fig. 1.
Fig. 3 is the vertical section constructional drawing of second embodiment of the utility model.
Among the figure: 1. bar top connection, pump barrel is 3. gone up in 2. pipe top connection, 4. long-plunger, 5.O shape circle, 6. descend pump barrel, 7.O shape circle, 8. piston, 9. bar lower contact, 10. pipe lower contact, 11.12. following helmet is crossed the liquid passage on the Ф 1., Ф 2. sand washing grooves, and Ф 3. respiration channels, Ф 4. descended the liquid passage.
The specific embodiment
In Fig. 1, bar top connection 1 car has internal thread, has groove Ф 1; Pipe top connection 2 cars have internal thread; Last pump barrel 3 cars have external screw thread and groove; Long-plunger 4 has groove Ф 2, and car has external screw thread; Following pump barrel 6 cars have internal thread, have groove Ф 3; Piston 8 cars have groove; Bar lower contact 9 cars have internal thread, have groove Ф 4, and top is circular, and the bottom is square; Pipe lower contact 10 cars have external screw thread.
O shape circle 5 is packed into and is gone up in the groove of pump barrel 3, pipe top connection 2 is threaded with last pump barrel 3, last pump barrel 3 is threaded with following pump barrel 6, O shape circle 7 is packed in the groove of piston 8, the little external diameter end of long-plunger 4 passes from the endoporus of piston 8, its major diameter step is sitting on the piston 8, bar lower contact 9 is threaded with long-plunger 4, long-plunger 4 passes from the endoporus that descends pump barrel 6, passes the endoporus of pump barrel 3 again, makes piston 8 pack to descend the endoporus of pump barrel 6 into, make pump barrel 3 and long-plunger 4 form friction pair (3,4), following pump barrel 6 forms friction pair (6,8) with piston 8, bar top connection 1 is threaded with long-plunger 4, pipe lower contact 10 is threaded with following pump barrel 6, like this, and just by bar top connection 1, long-plunger 4, O shape circle 5, piston 8, the assembly that moves about is formed in bar lower contact 9; By pipe top connection 2, go up pump barrel 3, O shape circle 7, fixation assembly is formed in pump barrel 6, pipe lower contact 10 down; First embodiment of the present utility model just assembles and finishes.
Execute in the example at real another shown in Figure 3, pipe top connection 2 middle part internal diameters are little, and the two ends internal diameter is big, and car has internal thread respectively; Last pump barrel 3 cars have external screw thread, have groove; Long-plunger 4 has groove Ф 2, and car has external screw thread; Piston 8 cars have groove and internal thread; Bar lower contact 9 cars have internal thread and external screw thread, have groove Ф 4, and top is circular, and is square outside the bottom; Reinforced pipe 11 cars have external screw thread; Box cupling 12 cars have internal thread.
Reinforced pipe 11 is threaded with box cupling 12, box cupling 12 is threaded with following pump barrel 6, O shape circle 5 is packed into and is gone up in the groove of pump barrel 3, the pipe top connection 2 respectively with last pump barrel 3, reinforced pipe 11 is threaded, O shape circle 7 is packed in the groove of piston 8, long-plunger 4 is threaded with piston 8, bar lower contact 9 is threaded with piston 8, long-plunger 4 passes from the endoporus that descends pump barrel 6, passes the endoporus of pump barrel 3 again, makes piston 8 pack to descend the endoporus of pump barrel 6 into simultaneously, make pump barrel 3 and long-plunger 4 form friction pair (3,4), following pump barrel 6 forms friction pair (6,8) with piston 8, bar top connection 1 is threaded with long-plunger 4, pipe lower contact 10 is threaded with following pump barrel 6, like this, and just by bar top connection 1, long-plunger 4, O shape circle 7, piston 8, the assembly that moves about is formed in bar lower contact 9; By pipe top connection 2, go up pump barrel 3, reinforced pipe 11, O shape circle 5, box cupling 12, fixation assembly is formed in pump barrel 6, pipe lower contact 10 down; Second embodiment of the present utility model just assembles and finishes.
Operating principle of the present utility model is: before oil well put into production, oil well pipe made it be full of liquid through pressure testing; After oil well put into production, when the oil well pump piston pumped, the travelling valve of oil well pump and standing valve were also done the alternating movement of opening and closing thereupon, and the gas liquid mixture of oil well is extracted out, made to be full of gas liquid mixture in the oil well pipe all the time.And the gas liquid mixture that oil well pump is extracted out, then by the endoporus that descended liquid passage Ф 4, long-plunger 4 of bottom oil pipe by bar lower contact 9, bar top connection 1 went up liquid passage Ф 1, enter into the top oil pipe by the bottom oil pipe, until discharge ground.Because friction pair (3,4) and the gap sealed effect of friction pair (6,8) so just can utilize the connection effect of respiration channel Ф 3, and the upper and lower end face of piston 8 is in respectively in the different pressure system of oil jacket.Because the head of liquid in the load reducer institute upper/lower positions oil pipe will be much larger than the pressure in the sleeve pipe, be used for the lower surface of piston 8 by the masterpiece that this pressure differential produced, make it produce a hydraulic pressure feedback force that makes progress.When pumping unit horsehead was up, piston 8 was under the effect of this hydraulic pressure feedback force, and the oil well pump roofbolt below driving moves upward together in company with top rod string, thereby reaches the purpose that alleviates the pumping unit horsehead polished rod load; When pumping unit horsehead was descending, piston 8 was driven by the sucker rod below it and moves downward, and so finishes a course of work.
In addition, utilize scouring sluice Ф 2, when long-plunger 4 pumps, the sand grains that is deposited in load reducer top washed away carry away, reach wearing and tearing that reduce long-plunger 4 and the purpose that is stuck; Utilize friction pair (3,4) and friction pair (6,8) that the soft seal assembly is arranged, reach when the oil well pipe pressure testing, be not subjected to the influence of load reducer wastage, the purpose of the total wastage of load reducer in the time of can reducing the oil well ordinary production again; Utilize the external diameter of bar lower contact 9 to add internal diameter greater than the bottom oil pipe, bar lower contact 9 can sit on the tubing head of bottom, reach well rod weight is transferred on the oil pipe of load reducer bottom, off-load organ pipe lower contact 10 is connected or when dismantling with the bottom oil pipe, on it, to unload the required torsion of screw thread little, can be with the purpose of thread damage.
When install and use at the scene, descend the pump program routinely,, carried the dead space of sucker rod earlier with the pipe below the utility model, bar, pump G.I.H, respectively bar lower contact 9 of the present utility model is threaded with the bottom sucker rod, pipe lower contact 10 is connected with the bottom tubing round thread.Afterwards, with the utility model G.I.H, with being threaded in the bar top connection 1, oil pipe is connected in the pipe top connection 2, can be with the tubing string G.I.H on top with the lower contact of on-off connector.After the tubing string pressure testing is qualified, the top connection of on-off connector with being threaded in G.I.H on the sucker rod, after the on-off connector butt joint, has been carried the dead space of sucker rod, can put into production use.
Depth of setting of the present utility model is different because of well, and the principle of its depth of setting is, and the weight of bottom sucker rod in liquid is necessary＞hydraulic pressure feedback force of the present utility model, to guarantee the descending smoothly of top sucker rod.
Claims (3)
1. a rod-pumped well load reducer is formed the assembly that moves about by bar top connection (1), long-plunger (4), O shape circle (7), piston (8), bar lower contact (9); By pipe top connection (2), go up pump barrel (3), O shape circle (5), fixation assembly is formed in pump barrel (6), pipe lower contact (10) down; It is characterized in that: O shape circle (5) is packed into and is gone up in the groove of pump barrel (3), pipe top connection (2) is threaded with last pump barrel (3), last pump barrel (3) is threaded with following pump barrel (6), O shape circle (7) is packed in the groove of piston (8), the little external diameter end of long-plunger (4) passes from the endoporus of piston (8), its major diameter step is sitting on the piston (8), bar lower contact (9) is threaded with long-plunger (4), long-plunger (4) passes from the endoporus of following pump barrel (6), pass the endoporus of pump barrel (3) again, make piston (8) pack to descend the endoporus of pump barrel (6) into, make pump barrel (3) and long-plunger (4) form friction pair (3,4), following pump barrel (6) forms friction pair (6 with piston (8), 8), bar top connection (1) is threaded with long-plunger (4), and pipe lower contact (10) is threaded with following pump barrel (6).
2. rod-pumped well load reducer according to claim 1, it is characterized in that: reinforced pipe (11) is threaded with box cupling (12), box cupling (12) is threaded with following pump barrel (6), O shape circle (5) is packed into and is gone up in the groove of pump barrel (3), pipe top connection (2) is threaded with last pump barrel (3), reinforced pipe (11) respectively, and pipe lower contact (10) is threaded with following pump barrel (6); Like this, just by pipe top connection (2), go up pump barrel (3), reinforced pipe (11), O shape circle (5), box cupling (12), fixation assembly is formed in pump barrel (6), pipe lower contact (10) down.
3. rod-pumped well load reducer according to claim 1 is characterized in that: bar top connection (1) car has internal thread, has groove (Φ 1); Pipe top connection (2) car has internal thread; Last pump barrel (3) car has external screw thread and groove; Long-plunger (4) has groove (Φ 2), and car has external screw thread; Following pump barrel (6) car has internal thread, has groove (Φ 3); Bar lower contact (9) car has internal thread, has groove (Φ 4), and top is circular, and the bottom is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201470170U CN201047271Y (en) | 2006-10-20 | 2006-10-20 | Oil pumping motor-pumped well de-loading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201470170U CN201047271Y (en) | 2006-10-20 | 2006-10-20 | Oil pumping motor-pumped well de-loading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201047271Y true CN201047271Y (en) | 2008-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201470170U Expired - Fee Related CN201047271Y (en) | 2006-10-20 | 2006-10-20 | Oil pumping motor-pumped well de-loading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201047271Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016009302A2 (en) | 2014-07-15 | 2016-01-21 | Yorio Pablo Martín | Load reduction device for deep well pumping systems and pumping system comprising said device |
| CN114310186A (en) * | 2022-01-05 | 2022-04-12 | 王光亮 | Load reducer for pumping well and production method |
-
2006
- 2006-10-20 CN CNU2006201470170U patent/CN201047271Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016009302A2 (en) | 2014-07-15 | 2016-01-21 | Yorio Pablo Martín | Load reduction device for deep well pumping systems and pumping system comprising said device |
| CN114310186A (en) * | 2022-01-05 | 2022-04-12 | 王光亮 | Load reducer for pumping well and production method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Ou Liangui Document name: Notification to Pay the Fees |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080416 Termination date: 20141020 |
|
| EXPY | Termination of patent right or utility model |