CN101705803A - Well-flushing oil-drainage device of oil pumping pipe column - Google Patents
Well-flushing oil-drainage device of oil pumping pipe column Download PDFInfo
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- CN101705803A CN101705803A CN200910230155A CN200910230155A CN101705803A CN 101705803 A CN101705803 A CN 101705803A CN 200910230155 A CN200910230155 A CN 200910230155A CN 200910230155 A CN200910230155 A CN 200910230155A CN 101705803 A CN101705803 A CN 101705803A
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- oil
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- pipe
- inner pipe
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Abstract
The invention relates to a well-flushing oil-drainage device of an oil pumping pipe column, a valve ball is arranged in a communicating joint, the lower part of the communicating joint is connected with the upper part of an inner pipe, an oil pipe pin thread is arranged at the lower part of the inner pipe, and a seal assembly takes the shape of a unidirectional horn with an upward horn mouth; a communicating hole is arranged at the upper part of the inner pipe, a seal sleeve is sleeved on the inner pipe and covers the communicating hole, the seal assembly is sleeved outside the seal sleeve, a fixed sleeve and the lower part of the seal sleeve are connected to fix the seal assembly on the seal sleeve, a left-hand pin thread is arranged at the lower part of the inner pipe, a left-hand thread is arranged in a thread sleeve and closely screwed with the left-hand pin thread at the lower part of the inner pipe, a buckling key is arranged at the lower end of the fixed sleeve, a buckling groove is arranged at the upper end of the thread sleeve, and the width of the buckling groove is larger than that of the buckling key. During the working, the seal sleeve can be separated from the communicating hole through the operation to enable a sleeve to be communicated with the inner pipe so that oil on the well-flushing oil-drainage device can be drained into underground, the invention avoids the crude oil loss, the environmental pollution and the blowout accident and has remarkable economic and social benefits.
Description
Technical field:
The present invention is the oil exploitation underground equipment, is a kind of well-flushing oil-drainage device of oil pumping pipe column.
Prior art:
In viscous crude, wax deposition, dark pumpingh well are produced, need frequent carry out the hot water circuit well-flushing and just can keep the oil well ordinary production the oil pipe on oil well pump and the oil well pump.Pumping and washing process is that hot water is squeezed into from sleeve pipe, and with after well liquid mixes, oil pipe returns out hot water from the oil well pump under oil well pump.Because sleeve pipe and stratum are UNICOMs, well-flushing pressure is generally all very high, and the stratum is produced than high back pressure, and well-flushing water enters the stratum easily, on the one hand water-sensitive strata is damaged, and kills the stratum, makes the stratum not fuel-displaced; Increase the well-flushing water consumption on the other hand, duration of well flushing is long, increases manpower and materials.For this reason; the technician who has has studied protective device and has been used to avoid well-flushing water to enter the stratum; as Chinese patent application: 200520124151.4 " oil well well-flushing protective devices "; its black box 5 is unidirectional horn-like, and the horn mouth direction is UNICOM's groove one side on the interior pipe 6, and the external diameter of black box 5 is greater than casing inner diameter; under the extruding of tubing string gravity, shrink and enter in the sleeve pipe; self sealing action is arranged, do not need artificial seat envelope, just can seal oil casing annular space.Owing on this device valve ball 4 has been installed, black box 5 seals up sleeve pipe again all the time, and when following subjob played oil pipe, fluid on the pump in the oil pipe and the fluid in the sleeve pipe all can not leak in the well, black box 5 is equally all taken out its OIH liquid earthward to piston, causes the crude oil loss on the one hand; Cause environment pollution on the other hand, ground inconvenience job execution; Be that the pit shaft internal pressure descends again on the one hand, cause blowout easily, produce heavy economic losses.
Summary of the invention:
The purpose of this invention is to provide a kind of well-flushing oil-drainage device of oil pumping pipe column; well-flushing pressure and strata pressure are separated; prevent that flushing fluid from entering pollution and the injury that causes behind the low pressure leakage stratum oil reservoir; play the effect on protection stratum; when tripping out this device, the fluid in the tubing and casing can be leaked in the well simultaneously; avoid the crude oil loss, avoid environment pollution, avoid taking place gas blowout accident.
The object of the present invention is achieved like this: UNICOM's joint, valve ball, black box, interior pipe are arranged, valve ball is placed in UNICOM's joint, and UNICOM joint bottom is connected with interior pipe top, and the oil pipe male thread is arranged at interior pipe bottom, black box is unidirectional horn-like, and the horn mouth direction upwards.Also have sealing shroud, fixed cover, thread bush, in pipe top linked hole is arranged, the sealing shroud suit on inner pipe, sealing shroud covers linked hole, black box is sleeved on outside the sealing shroud, fixed cover is connected with the sealing shroud bottom black box is fixed on the sealing shroud, and left-handed male thread is arranged at interior pipe bottom, and screw thread is with interior left hand thread, left hand thread and the left-handed male thread in interior pipe bottom screw in the thread bush, there is button the fixed cover lower end, and there is catching groove the thread bush upper end, and the width of catching groove is greater than the width of button.
Beneficial effect of the present invention: can leave linked hole through the operation sealing shroud during operation, make sleeve pipe and interior pipe UNICOM, the fluid on the present invention can be leaked into the down-hole, avoid the crude oil loss, avoid environment pollution, avoid taking place gas blowout accident, have remarkable economic efficiency and social benefit.
Description of drawings:
Accompanying drawing is the half sectional view of the embodiment of the invention.
The specific embodiment:
Below in conjunction with accompanying drawing the embodiment of the invention is described.
Mainly form by UNICOM's joint 1, valve ball 2, sealing shroud 3, black box 4, fixed cover 5, thread bush 6, interior pipe 7.Valve ball 2 is placed in UNICOM's joint 1, and UNICOM's joint 1 bottom is connected with interior pipe 7 tops, and oil pipe male thread 12 is arranged at interior pipe 7 bottoms, and black box 4 is unidirectional horn-like, and the horn mouth direction upwards.Linked hole 8 is arranged at interior pipe 7 tops, manage on 7 in sealing shroud 3 is sleeved on, sealing shroud 3 covers linked holes 9, and black box 4 is sleeved on outside the sealing shroud 3, and fixed cover 5 is connected with sealing shroud 3 bottoms black box 4 is fixed on the sealing shroud 3, left-handed male thread 11 is arranged at interior pipe 7 bottoms, thread bush 6 has interior left hand thread, and left hand thread and the left-handed male thread 11 in interior pipe 7 bottoms screw in the thread bush 6, and there is button 9 fixed cover 5 lower ends, there is catching groove 10 thread bush 6 upper ends, and the width of catching groove 10 is greater than the width of button 9.
The present invention is installed under the oil well pump of pumping pipe string, the external diameter of black box 4 is greater than casing inner diameter, under the extruding of tubing string gravity, shrink and enter in the sleeve pipe, self sealing action is arranged, do not need artificial seat envelope just can seal oil casing annular space, under valve ball 2 effects, to enter the back up for UNICOM's groove on UNICOM's joint 1 only to allow flushing fluid in the sleeve pipe to pass through under the sleeve pipe, and can not be descending, thereby can realize the oil pipe on oil well pump and the oil well pump is carried out the hot water circuit well-flushing, can prevent that also flushing fluid from entering the stratum.
The external diameter of black box 4 is greater than casing inner diameter, be lowered to behind the sleeve pipe and have frictional force between the sleeve pipe, sealing shroud 3, black box 4, fixed cover 5 is motionless relatively, carry in the operation and during rotation pipeline, button 9 and catching groove 10 interlock, continue to carry oil pipe limit rotation pipeline on the limit, thread bush 6 does not rotate under the frictional force effect, and the left-handed male thread 11 in left hand thread and interior pipe 7 bottoms screws under the effect in thread bush 6, in pipe 7 up, sealing shroud 3 leaves linked hole 8, makes sleeve pipe and interior pipe 7 UNICOMs, thereby realizes draining, fluid is leaked in the well, avoid the crude oil loss, avoid environment pollution, avoid taking place gas blowout accident.
Claims (1)
1. well-flushing oil-drainage device of oil pumping pipe column, UNICOM's joint (1) is arranged, valve ball (2), black box (4), interior pipe (7), valve ball (2) is placed in UNICOM's joint (1), UNICOM's joint (1) bottom is connected with interior pipe (7) top, oil pipe male thread (12) is arranged at interior pipe (7) bottom, black box (4) is unidirectional horn-like, the horn mouth direction upwards, it is characterized in that: also have sealing shroud (3), fixed cover (5), thread bush (6), linked hole (8) is arranged at interior pipe (7) top, sealing shroud (3) is sleeved on the interior pipe (7), sealing shroud (3) covers linked hole (9), black box (4) is sleeved on outside the sealing shroud (3), fixed cover (5) is connected with sealing shroud (3) bottom black box (4) is fixed on the sealing shroud (3), left-handed male thread (11) is arranged at interior pipe (7) bottom, thread bush (6) has interior left hand thread, interior left hand thread of thread bush (6) and the left-handed male thread in interior pipe (7) bottom (11) screw, there is button (9) fixed cover (5) lower end, there is catching groove (10) thread bush (6) upper end, and the width of catching groove (10) is greater than the width of button (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910230155A CN101705803A (en) | 2009-11-18 | 2009-11-18 | Well-flushing oil-drainage device of oil pumping pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910230155A CN101705803A (en) | 2009-11-18 | 2009-11-18 | Well-flushing oil-drainage device of oil pumping pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101705803A true CN101705803A (en) | 2010-05-12 |
Family
ID=42376052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910230155A Pending CN101705803A (en) | 2009-11-18 | 2009-11-18 | Well-flushing oil-drainage device of oil pumping pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101705803A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464616A (en) * | 2016-01-06 | 2016-04-06 | 冯俊杰 | Well-washing environment-friendly double-cup packer |
| CN109356540A (en) * | 2018-11-30 | 2019-02-19 | 长江大学 | A kind of cyclic cleaning valve |
| CN109386254A (en) * | 2017-08-08 | 2019-02-26 | 魏志海 | Dry-hot-rock geothermal well high voltagehigh frequency vibrates well-washing device |
-
2009
- 2009-11-18 CN CN200910230155A patent/CN101705803A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464616A (en) * | 2016-01-06 | 2016-04-06 | 冯俊杰 | Well-washing environment-friendly double-cup packer |
| CN109386254A (en) * | 2017-08-08 | 2019-02-26 | 魏志海 | Dry-hot-rock geothermal well high voltagehigh frequency vibrates well-washing device |
| CN109356540A (en) * | 2018-11-30 | 2019-02-19 | 长江大学 | A kind of cyclic cleaning valve |
| CN109356540B (en) * | 2018-11-30 | 2023-08-29 | 长江大学 | Circulation well flushing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100512 |