CN203347704U

CN203347704U - Well washing and oil draining device for pumping well

Info

Publication number: CN203347704U
Application number: CN 201320368445
Authority: CN
Inventors: 孙丽美; 杨成健; 王国红; 田楠; 李云涛; 王学美
Original assignee: 孙丽美
Priority date: 2013-06-18
Filing date: 2013-06-18
Publication date: 2013-12-18
Anticipated expiration: 2023-06-18

Abstract

Provided is a well washing and oil draining device for a pump well. A valve ball is arranged in a communication connector, the lower portion of the communication connector is connected with the upper portion of an inner tube, a sealing assembly is in a one-way horn shape, the horn opening direction is upward, a communication hole is formed in the upper portion of the inner tube, the inner tube is sleeved by a sealing sleeve, the sealing cover covers the communication hole, the sealing assembly sleeves the sealing cover, a rail cover is connected with the lower portion of the sealing cover to fix the sealing assembly on the sealing cover, a horizontal rail and a vertical rail are arranged at the lower portion of the inner tube, the horizontal rail and the vertical rail are communicated, a rail pin is installed on the rail cover, the inner end of the rail pin is inserted into the horizontal rail, and the rail pin can move from the horizontal rail to the vertical rail. In operation, a tubular column is rotated, the rail pin move from the horizontal rail to the vertical rail under the action of the friction between the sealing assembly and a casing pipe, the tubular column sealing cover is lifted upwards to be away from the communication hole, and the sleeve and the inner tube are communicated. Thus, oil above the well washing and oil draining device can be drained into the well, the petroleum oil loss is avoided, the environmental pollution is avoided, and blowout accidents are avoided.

Description

Pumpingh well well-flushing drainage device

Technical field:

The utility model is the underground equipment that oil exploitation is used, and is a kind of pumpingh well well-flushing drainage device.

background technology:

In viscous crude, wax deposition, dark pumpingh well are produced, often need that the oil pipe on oil well pump and oil well pump is carried out to the hot water circuit well-flushing and just can maintain oil well and normally produce.Pumping and washing process is that hot water is squeezed into from sleeve pipe, and hot water is with after well liquid mixes under oil well pump, and from oil well pump, oil pipe returns out.Because sleeve pipe and stratum are UNICOMs, well-flushing pressure is generally all very high, and stratum is produced than high back pressure, and well-flushing water easily enters stratum, on the one hand water-sensitive strata is damaged, and kills ，Shi stratum, stratum not fuel-displaced; Increase on the other hand the well-flushing water consumption, duration of well flushing is long, increases manpower and materials.For this reason; some technician have studied protective device for avoiding well-flushing water to enter stratum; as Chinese patent: 200520124151.4 " Well-cleaning protection device for oil wells "; its black box 5 is unidirectional horn-like, and the horn mouth direction is UNICOM's groove one side on inner tube 6, and the external diameter of black box 5 is greater than casing inner diameter; shrink and enter in sleeve pipe under the extruding of tubing string gravity; self sealing action is arranged, do not need artificially settingly, just can seal oil casing annular space.Owing on this device, valve ball 4 being installed, black box 5 seals up again sleeve pipe all the time, and when lower subjob plays oil pipe, the fluid on pump in oil pipe and the fluid in sleeve pipe all can not leak in well, black box 5 equally all pumps to ground by its OIH liquid to piston, causes on the one hand the crude oil loss; Cause on the other hand environment pollution, ground inconvenience job execution; Be that the pit shaft internal pressure descends again on the one hand, easily cause blowout, produce heavy economic losses.The technician who for this reason has has studied the Well-cleaning protection device of liquid draining; as Chinese patent 200910230155.3 " well-flushing oil-drainage device of oil pumping pipe column "; when tripping out this device, the fluid in tubing and casing can be leaked in well; can avoid the generation of the problems referred to above; but in its thread bush and between inner tube, will lean on frictional force between black box 4 and sleeve pipe to release could draining; because frictional force is limited, the problem that often appearance can not be released, so poor reliability.

Summary of the invention:

The purpose of this utility model is to provide a kind of pumpingh well well-flushing drainage device, when tripping out this device, the fluid in tubing and casing can be leaked in well, avoids the crude oil loss, avoids environment pollution, avoids occurring gas blowout accident.

The purpose of this utility model is achieved in that and comprises UNICOM's joint, valve ball, sealing shroud, black box, the track cover, track pin, inner tube, valve ball is placed in UNICOM's joint, UNICOM's joint bottom is connected with inner tube top, black box is unidirectional horn-like, the horn mouth direction upwards, linked hole is arranged at inner tube top, the sealing shroud suit on inner pipe, sealing shroud covers linked hole, black box is sleeved on outside sealing shroud, the track cover is connected black box is fixed on sealing shroud with the sealing shroud bottom, traverse rod road and perpendicular track are arranged at the inner tube bottom, traverse rod road and perpendicular track communicate, track pin is arranged on track and puts, insert in the traverse rod road inner end of track pin, track pin can be from the traverse rod road moves to perpendicular track.

The beneficial effects of the utility model: rotation tubing string during operation, at the frictional force effect lower railway pin between black box and sleeve pipe, from the traverse rod road, move to perpendicular track, upper lifting pipe column sealing cover just can leave linked hole, make sleeve pipe and inner tube UNICOM, fluid on the utility model can be leaked into to down-hole, avoid the crude oil loss, avoid environment pollution, avoid occurring gas blowout accident, there is significant economic benefit and social benefit.

The accompanying drawing explanation:

Accompanying drawing 1 is the half sectional view of the utility model embodiment.

Accompanying drawing 2 is track expanded views on part 8 in accompanying drawing 1.

The specific embodiment:

Below in conjunction with accompanying drawing, embodiment of the present utility model is described.

As seen from the figure, embodiment of the present utility model comprises UNICOM's joint 1, valve ball 2, sealing shroud 3, black box 5, track cover 6, track pin 7, inner tube 8, valve ball 2 is placed in UNICOM's joint 1, UNICOM's joint 1 bottom is connected with inner tube 8 tops, black box 4 is unidirectional horn-like, the horn mouth direction upwards, linked hole 4 is arranged at inner tube 8 tops, sealing shroud 3 is sleeved on inner tube 8, sealing shroud 3 covers linked hole 4, black box 5 is sleeved on outside sealing shroud 3, track cover 6 is connected black box 5 is fixed on sealing shroud 3 with sealing shroud 3 bottoms, traverse rod road 9 and perpendicular track 10 are arranged at inner tube 8 bottoms, traverse rod road 9 and perpendicular track 10 communicate, track pin 7 is arranged on track cover 6 (being threaded), 9 li, traverse rod road is inserted in the inner end of track pin 7, track pin 7 can be from traverse rod road 9 moves to perpendicular track 10.

The utility model is arranged under the oil well pump of pumping pipe string, the external diameter of black box 5 is greater than casing inner diameter, shrink and enter in sleeve pipe under the extruding of tubing string gravity, self sealing action is arranged, do not need artificial settingly just can seal oil casing annular space, under valve ball 2 effects, the UNICOM's groove that only allows flushing fluid in sleeve pipe to pass through from sleeve pipe on UNICOM's joint 1 enters rear up, and can not be descending, thereby can realize the oil pipe on oil well pump and oil well pump is carried out to the hot water circuit well-flushing, also can prevent that flushing fluid from entering stratum.

The external diameter of black box 5 is greater than casing inner diameter, there is frictional force after being lowered to sleeve pipe and between sleeve pipe, propose rotation and can make during tubing string track pin 7 migrate to 10 li, perpendicular track upper, the descending linked hole 4 that leaves of sealing shroud 3, make sleeve pipe and inner tube 8 UNICOMs, thereby realize draining, fluid is leaked in well, avoid the crude oil loss, avoid environment pollution, avoid occurring gas blowout accident.

Claims

1. a pumpingh well well-flushing drainage device, comprise UNICOM's joint (1), valve ball (2), sealing shroud (3), black box (5), track cover (6), track pin (7), inner tube (8), valve ball (2) is placed in UNICOM's joint (1), UNICOM's joint (1) bottom is connected with inner tube (8) top, black box (4) is unidirectional horn-like, the horn mouth direction upwards, linked hole (4) is arranged at inner tube (8) top, sealing shroud (3) is sleeved on inner tube (8), sealing shroud (3) covers linked hole (4), black box (5) is sleeved on outside sealing shroud (3), track cover (6) is connected black box (5) is fixed on sealing shroud (3) with sealing shroud (3) bottom, it is characterized in that: traverse rod road (9) and perpendicular track (10) are arranged at inner tube (8) bottom, traverse rod road (9) and perpendicular track (10) communicate, track pin (7) is arranged on track cover (6), it is inner that traverse rod road (9) is inserted in the inner end of track pin (7), it is that track pin (7) can move to perpendicular track (10) from traverse rod road (9).