CN2399531Y - Hydraulic feedback anti-sand pump for flexible continuous sucker rod - Google Patents
Hydraulic feedback anti-sand pump for flexible continuous sucker rod Download PDFInfo
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- CN2399531Y CN2399531Y CN 99253444 CN99253444U CN2399531Y CN 2399531 Y CN2399531 Y CN 2399531Y CN 99253444 CN99253444 CN 99253444 CN 99253444 U CN99253444 U CN 99253444U CN 2399531 Y CN2399531 Y CN 2399531Y
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- short circuit
- pump
- sand
- control tube
- sand control
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Abstract
The utility model relates to a hydraulic feedback anti-sand pump for a flexible continuous sucker rod, which is used for lifting well liquid for oil extraction and is matched with a flexible continuous sucker rod. An upper short joint 7 is connected with an anti-sand barrel 16, a lower pump barrel 13 is connected with a middle anti-sand barrel 22 by the upper short joint 7, and the middle anti-sand barrel 22 is connected with a lower anti-sand barrel 35 by a lower short joint 32. An elastic sealing member 23 and a sealing ring 25 are arranged in the pump barrel 13, and the upper short joint 7 is provided with an air outlet, an upper plunger and a lower plunger 8. The utility model increases the proportion of the flexible continuous sucker rod, avoids sand blocking, eliminates the gas (or vapor) locking phenomenon of the pump, and improves the full extent of the pump.
Description
The utility model relate to well liquid lifting that a kind of petroleum production uses, with the matching used hydraulic feedback sand-preventing pump for flexible continuous pumping rod of flexible continuous sucker rod.
At present, the downhole hardware that matches with flexible continuous sucker rod can only adopt conventional pumps, but it does not have sand control, gas-tight and the fluid power feedback effect is provided, and seek out these functions, can only adopt corresponding Special Pump, as fluid power feedback pump, sand-control pump, gas prevention pump etc., and these pumps usually are only outstanding a certain functions, can't take into account other requirement, and this will inevitably cause both not matching, bring difficulty for actual the use, using effect does not reach re-set target yet.Because flexible continuous sucker rod can not bear ballast, so the following action edge of oil rig can only provide by weighted lever, helps pump plunger descending, finishes the pumping function.But long weighted lever not only can increase the quantity of bar box cupling, increases the probability of break-off accident, and can shorten the length of flexible continuous sucker rod, can't give full play to the advantage of sucker rod.
The purpose of this utility model is: a kind of hydraulic feedback sand-preventing pump for flexible continuous pumping rod that produces hydraulic pressure feeding back downlink power, minimizing weighted lever length, prevents the sand card is provided.
The utility model is achieved in that by sucker rod 1, open type valve cover 2, upper travelling valve ball 3, upper travelling valve seat 4, upper plug joint 5, upper plug 6, top short circuit 7, lower plunger 8, lining 9, lower travelling valve ball 10, lower travelling valve seat 11, lower plunger short circuit 12, following pump barrel 13, upper connection 14, last pump barrel 15, last sand control tube 16, upper filter screen 19, middle sand control tube 22, elastomer seal 23, seal ring 25, standing valve cover 27, fixed valve ball 28, fixed valve base 29, regulate tube 30, lower filter screen 31, bottom short circuit 32, standing valve short circuit 33, following sand control tube 35, lower contact 36, lower end cap 37 is formed, open type valve cover 2 is socketed on the sucker rod 1, open type valve cover 2 is connected with upper plug joint 5, between open type valve cover 2 and the upper plug joint 5 upper travelling valve ball 3 is arranged, upper travelling valve seat 4, upper plug 6 one ends are connected with upper plug joint 5, the other end is connected with lower plunger 8, between following pump barrel 13 and the lower plunger 8 lining 9 is arranged, there is lower travelling valve ball 10 end of lower plunger 8, lower travelling valve seat 11, lower plunger short circuit 12 is connected with lower travelling valve seat 11, there is upper connection 14 last sand control tube 16 outsides, top short circuit 7 is connected with middle sand control tube 22, fixed valve ball 28 is arranged in the standing valve cover 27, fixed valve base 29 and adjusting tube 30, lower filter screen 31 is arranged outside the bottom short circuit 32, standing valve short circuit 33 is arranged in it, lower contact 36 is connected with following sand control tube 35 the other ends, there is lower end cap 37 its end, pump barrel is by last pump barrel 15, following pump barrel 13 is formed, the outside of last pump barrel 15 is connected to sand control tube 16 by top short circuit 7, sand control tube 22 during following pump barrel 13 is connected to by top short circuit 7, middle sand control tube 22 is connected to down sand control tube 35 by bottom short circuit 32, flexible Sealings 23 in the pump barrel 13, seal ring 25.
Top short circuit 7 is provided with air outlet hole.
Upper plug 6 has the sectional area that varies in size with lower plunger 8.
Advantage of the present utility model is: adopted sectional area different on, down two plungers and match with it on, following pump barrel swabbing well liquid, because the annular pressure in the cross section product moment of big small plunger and the oil pipe between head of liquid and the tubing and casing is poor, produce a downward hydraulic pressure feedback force, make rod string when down stroke, obtain an additional descending thrust, the help plunger is descending, and can make flexible continuous sucker rod last, all be subjected to tension during down stroke, can not make the flexible continuous sucker rod pressurized and unstability is piled up to beat and turned round, reduced the suffered alternate load of sucker rod, prolonged the working life of roofbolt, also shortened simultaneously the length of weighted lever, increased the ratio of flexible continuous sucker rod, avoided the sand card, eliminated pump gas (or) vapour lock phenomenon, improved the degree of filling of pump, because of being provided with elastomer seal, can block the air outlet of top sub, guarantee conventional oil pipe pressure testing.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model in upstroke;
Fig. 3 is the structural representation of the utility model in down stroke;
Fig. 4 is the structural representation of the utility model at the pressure testing state.
Below in conjunction with accompanying drawing the utility model is described further:
The utility model is by sucker rod 1, open type valve cover 2, upper travelling valve ball 3, upper travelling valve seat 4, upper plug joint 5, upper plug 6, top short circuit 7, lower plunger 8, lining 9, lower travelling valve ball 10, lower travelling valve seat 11, lower plunger short circuit 12, following pump barrel 13, upper connection 14, last pump barrel 15, last sand control tube 16, upper filter screen 19, middle sand control tube 22, elastomer seal 23, seal ring 25, standing valve cover 27, fixed valve ball 28, fixed valve base 29, regulate tube 30, lower filter screen 31, bottom short circuit 32, standing valve short circuit 33, following sand control tube 35, lower contact 36, lower end cap 37 is formed, open type valve cover 2 is socketed on the sucker rod 1, open type valve cover 2 is connected with upper plug joint 5, between open type valve cover 2 and the upper plug joint 5 upper travelling valve ball 3 is arranged, upper travelling valve seat 4, upper plug 6 one ends are connected with upper plug joint 5, the other end is connected with lower plunger 8, between following pump barrel 13 and the lower plunger 8 lining 9 is arranged, there is lower travelling valve ball 10 end of lower plunger 8, lower travelling valve seat 11, lower plunger short circuit 12 is connected with lower travelling valve seat 11, there is upper connection 14 last sand control tube 16 outsides, top short circuit 7 is connected with middle sand control tube 22, fixed valve ball 28 is arranged in the standing valve cover 27, fixed valve base 29 and adjusting tube 30, lower filter screen 31 is arranged outside the bottom short circuit 32, standing valve short circuit 33 is arranged in it, lower contact 36 is connected with following sand control tube 35 the other ends, there is lower end cap 37 its end, pump barrel is by last pump barrel 15, following pump barrel 13 is formed, the outside of last pump barrel 15 is connected to sand control tube 16 by top short circuit 7, sand control tube 22 during following pump barrel 13 is connected to by top short circuit 7, middle sand control tube 22 is connected to down sand control tube 35 by bottom short circuit 32, flexible Sealings 23 in the pump barrel 13, seal ring 25.
Top short circuit 7 is provided with air outlet hole.
Upper plug 6 has the sectional area that varies in size with lower plunger 8,
When sucker rod 1 drives open type valve cover 2, upper travelling valve ball 3, upper travelling valve seat 4, upper plug joint 5, upper plug 6, lower plunger 8, lower travelling valve ball 10, lower travelling valve seat 11, lower plunger short circuit 12 when up, following pump barrel 13 volumes increase, pressure descends, be lower than the sleeve pipe internal pressure, standing valve 28 is opened, well liquid enters down pump barrel 13, and pump begins suction process.Meanwhile, the annular space that upper plug 6 and lower plunger 8 form increases gradually, pressure in the ring cavity is less than the well hydraulic coupling in the sleeve pipe, well liquid enters pump barrel 15 by the air outlet of top short circuit 7, when horse head suspension point during near upper dead center, small plunger 8 has entered pump barrel 15, annular space appears between plunger and the pump barrel, at this moment, gas in the following pump barrel 13 just can be up, enters pump barrel 15, just can take advantage of a situation along annular space and enter down pump barrel 13 and go up liquid in the pump barrel 15, replenish the deficiency of feed liquor, increased degree of filling.Be pumped into pump above contain sand drain liquid, the solid phase particles of separating because of action of gravity in the pumping process (mainly being sand) can be deposited in the following sand control tube 35 that is connected the pump bottom along last sand control tube 16, top short circuit 7, middle sand control tube 22, bottom short circuit 32, thereby can avoid the long-pending sand on the pump to cause sand card plunger or sand to bury the generation of accidents such as rod string.
Down stroke: when open type valve cover 2, upper travelling valve ball 3, upper travelling valve seat 4, upper plug joint 5, upper plug 6, lower plunger 8, lower travelling valve ball 10, lower travelling valve seat 11, when lower plunger short circuit 12 descending certain distances block down pump chamber, the ring cavity volume reducing that upper plug 6 and last pump barrel 15 form, pressure raises, gassiness fluid in the ring cavity is discharged in the annular space between sand control tube 16 and the sleeve pipe by top short circuit 7 air outlets, pump lower chambers volume also reduces, pressure raises, standing valve 28 cuts out, fluid backs down the center hole that lower travelling valve 10 enters small plunger 8 and big plunger 6, is discharged in the oil pipe by upper travelling valve 3 again.So constantly repeat up-down stroke, shaft bottom fluid is given rise to ground by oil pipe, gas then is discharged to the annular space between oil pipe and the sleeve pipe, and sand can be deposited in the sand sediment pipe.When plunger is descending, because the sectional area difference of big small plunger, fluid column in the oil pipe and shaft bottom fluid pressure act on respectively on the big small plunger, just produced a downward liquid feedback force, this power helps flexible rod descending, avoids roofbolt to be subjected to bigger resistance (especially in viscous crude) and the bending that produces is beaten and turned round phenomenon.
Oil pipe pressure testing: when arriving pump barrel in the well down with oil pipe (tubing pump), simultaneously also elastomer seal 23 has been put into the precalculated position in the pump barrel, oil pipe more than the elastomer seal is sealed up (air outlet hole of top short circuit 7 is blocked) by seal ring 25, make the epimere tubing string possess the pressure testing condition, pressure testing finish reach technological requirement after, just can be lowered to plunger and flexible rod string, when the underpart of lower plunger short circuit 12 touches the upper end of elastomer seal 23, under deadweight effects such as plunger and flexible rod, elastic component is subjected to inside radial force effect and shrinks, when its radial dimension is retracted to certain value, elastomer seal 23 just comes off from top short circuit 7, drop on the standing valve cover 27, pump can normally move, and elastomer seal can not influence the normal swabbing action of pump, and elastomer seal is afterwards during workover eration, propose ground with pump, from pump, take out.
Notes vapour recovers the oil: if oil is thick, need the steam injection viscosity reduction, only need and will carry certain distance on the flexible rod string, make that the annular space between small plunger 8 and the following pump barrel 13 has been linked up the air outlet of top short circuit 7, just steam can enter the stratum by oil pipe and air outlet.Annotated and will carry out pump behind the steam when taking out, plunger can have been transferred to place, pump barrel location, carried certain over-stroke on again, just can carry out normal pumping this moment.
Claims (4)
1. hydraulic feedback sand-preventing pump for flexible continuous pumping rod, by sucker rod (1), open type valve cover (2), upper travelling valve ball (3), upper travelling valve seat (4), upper plug joint (5), upper plug (6), top short circuit (7), lower plunger (8), lining (9), lower travelling valve ball (10), lower travelling valve seat (11), lower plunger short circuit (12), pump barrel (13), upper connection (14) down, go up pump barrel (15), go up sand control tube (16),
Upper filter screen (19), middle sand control tube (22), elastomer seal (23), seal ring (25), standing valve cover (27), fixed valve ball (28), fixed valve base (29), regulate tube (30), lower filter screen (31), bottom short circuit (32), standing valve short circuit (33), following sand control tube (35), lower contact (36), lower end cap (37) is formed, open type valve cover (2) is socketed on the sucker rod (1), open type valve cover (2) is connected with upper plug joint (5), between open type valve cover (2) and the upper plug joint (5) upper travelling valve ball (3) is arranged, upper travelling valve seat (4), upper plug (6) one ends are connected with upper plug joint (5), the other end is connected with lower plunger (8), between following pump barrel (13) and the lower plunger (8) lining (9) is arranged, there is lower travelling valve ball (10) end of lower plunger (8), lower travelling valve seat (11), lower plunger short circuit (12) is connected with lower travelling valve seat (11), there is upper connection (14) last sand control tube (16) outside, top short circuit (7) is connected with middle sand control tube (22), fixed valve ball (28) is arranged in the standing valve cover (27), fixed valve base (29) and adjusting tube (30), lower filter screen (31) is arranged outside the bottom short circuit (32), standing valve short circuit (33) is arranged in it, lower contact (36) is connected with following sand control tube (35) the other end, there is lower end cap (37) its end, it is characterized in that: pump barrel is by last pump barrel (15), following pump barrel (13) two-part are formed, the outside of last pump barrel (15) is connected to sand control tube (16) by top short circuit (7), sand control tube (22) during following pump barrel (13) is connected to by top short circuit (7), middle sand control tube (22) is connected to down sand control tube (35) by bottom short circuit (32), flexible Sealing (23) in the pump barrel (13), seal ring (25).
2. hydraulic feedback sand-preventing pump for flexible continuous pumping rod according to claim 1 is characterized in that: top short circuit (7) is provided with air outlet hole.
3. hydraulic feedback sand-preventing pump for flexible continuous pumping rod according to claim 1 is characterized in that: upper plug (6) has the sectional area that varies in size with lower plunger (8).
4. hydraulic feedback sand-preventing pump for flexible continuous pumping rod according to claim 1 is characterized in that: bottom short circuit (32) is provided with the side inlet opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99253444 CN2399531Y (en) | 1999-11-05 | 1999-11-05 | Hydraulic feedback anti-sand pump for flexible continuous sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99253444 CN2399531Y (en) | 1999-11-05 | 1999-11-05 | Hydraulic feedback anti-sand pump for flexible continuous sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2399531Y true CN2399531Y (en) | 2000-10-04 |
Family
ID=34037337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99253444 Expired - Fee Related CN2399531Y (en) | 1999-11-05 | 1999-11-05 | Hydraulic feedback anti-sand pump for flexible continuous sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2399531Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855508A (en) * | 2019-11-28 | 2021-05-28 | 中国石油天然气股份有限公司 | Pipe type oil pump |
-
1999
- 1999-11-05 CN CN 99253444 patent/CN2399531Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855508A (en) * | 2019-11-28 | 2021-05-28 | 中国石油天然气股份有限公司 | Pipe type oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |