CN2351590Y

CN2351590Y - Multi-function oil well pump

Info

Publication number: CN2351590Y
Application number: CN 98210200
Authority: CN
Inventors: 宋彦武; 单景华; 王建民; 陈志刚; 李宝莹
Original assignee: JINZHOU OIL PRODUCTION PLANT LIAOHE PETROLEUM PROSPECTING BUREAU
Current assignee: JINZHOU OIL PRODUCTION PLANT LIAOHE PETROLEUM PROSPECTING BUREAU
Priority date: 1998-02-28
Filing date: 1998-02-28
Publication date: 1999-12-01
Anticipated expiration: 2008-02-28

Abstract

The utility model relates to an oil well pump for pumping wells in oil fields, particularly a multifunctional oil well pump. The utility model is provided with a lower valve seat 8, a valve body 9, a fixed valve body 10, a fixed valve seat 11, a sealing guide tube 12, a clamp spring 13, a spacing body 14, a piston spacing body 16, a lower short joint 17 for the pump and a piston ring 18, so that besides the oil pumping functions of general tubing pumps, the utility model has the functions that a piston can be lifted out of a pump barrel, sand can be washed directly after hanging, and a sand washing tube string is unnecessary to descend; when pump inspection is required due to the reduced pumping efficiency, the piston ring can be replaced by lifting out the piston, and the effect of pump inspection can be obtained by descending the piston. The pump has the advantages that the tube string can drain oil only by lifting out the piston, so that pollution can be reduced, the effect of preventing sand clamping can be good for wells with serious sand output, and the oil pumping efficiency can be high.

Description

Multifunctional oil-well pump

The utility model relates to a kind of oil well pump that uses on a kind of oil field pumping well, particularly a kind of multifunctional oil-well pump.

The tubing pump that generally uses on the present oil-field oil pumper, because its sand control card poor performance, the pipe column oil drainage difficulty causes ground pollution serious, and can not be with pump sand washing, complicated operation.

The purpose of this utility model is to provide a kind of multifunctional oil-well pump, can make pipe column oil drainage, directly sand washing, and sand control card effect is better, the pumping efficiency height.

The purpose of this utility model is to realize like this, it is by linkage connector 1, solid connecting rod 2, upper connection 3, working barrel 4, piston joint 5, piston oil drainage hole 6, piston 7, following valve seat 8, valve body 9, standing valve body 10, standing valve seat 11, sealing duct 12, jump ring 13, limit body 14, pressed joint 15, piston limit body 16, short circuit 17 and piston ring 18 are formed under the pump, linkage connector 1 is connected with solid connecting rod 2, is connected to piston limit body 16 successively on the solid connecting rod 2, piston joint 5, piston oil drainage hole 6, piston 7, following valve seat 8, valve body 9, standing valve body 10, sealing duct 12, jump ring 13; Pump barrel is to be connected with working barrel 4 by upper connection 3, is connected to short circuit 17 under pressed joint 15, the pump successively, is welded with standing valve seat 11, limit body 14 on pressed joint.On piston 7, be embedded with piston ring 18.

When the pumping unit up stroke, connecting rod 2 drives standing valve body 10 and valve body 9 moves upward, this moment, standing valve seat 11 was opened by friction, sealing envelope conduit 12, jump ring 13, limit body 14 control valve bodies open height, connecting rod 2 upwards does relative motion with sealing duct 12, liquid is inhaled in the pump barrel, and valve body 9 moves upward with following valve seat 8 sealings and drive piston 7, and piston 7 upper liquids are discharged; When the pumping unit down stroke, connecting rod 2 moves downward, and drives piston limit body 16 and contacts with piston joint 5, force piston to move downward, this moment, valve body 9 separated with following valve seat 8, and pump standing valve body 10, standing valve seat 11 are closed, liquid is inhaled in the piston, thereby finishes a working procedure; When the needs sand washing, piston is proposed the pump work tube hang, can be with the pump sand washing, finish draining during lift pipe string automatically, the gap that 18 compensating pistons of piston ring and the friction of pump work tube increase is to improve the working efficiency of pump.

The utility model is owing to adopted time valve seat 8, valve body 9, standing valve body 10, standing valve seat 11, sealing duct 12, jump ring 13, limit body 14, piston limit body 16, short circuit 17 and piston ring 18 under the pump, make it except that having general tubing pump oil pumping function, pump barrel directly sand washing after hanging piston can also be proposed, need not descend the sand washing tubing string again, when pump efficiency decline needs the inspection pump, as long as piston is proposed more rering to be lowered to and can to reach inspection pump efficiency fruit, this pump trips out piston just can make pipe column oil drainage, reduce and pollute, serious well sand control card is effective for shaking out, the pumping efficiency height.

Accompanying drawing is a structural representation of the present utility model.

Below in conjunction with accompanying drawing the utility model is further specified.

The utility model is made up of 18 kinds of parts, each part dimension is linkage connector 1 φ 46 * 120, solid connecting rod 2 φ 22 * 4200, upper connection 3 φ 62 * 180, working barrel 4 φ 60 * 5000, piston joint 5 φ 46 * 120, piston oil drainage hole 6 φ 10 * 4, piston 7 φ 60 * 1200, following valve seat 8 φ 57 * 30, valve body 9 φ 56 * 45, standing valve body 10 φ 57 * 45, standing valve seat 11 φ 58 * 45, sealing duct 12 φ 52 * 500, jump ring 13 φ 55, limit body 14 φ 54, pressed joint 15 φ 107 * 200, piston limit body 16 φ 46 * 100, short circuit 17 φ 88.9 * 1500 and piston ring 18 are formed under the pump, external dimension are φ 73 * 5000, working pressure: 10MPa, stroke are 3 meters.

Claims

1. the utility model relates to a kind of oil well pump that uses on a kind of oil field pumping well, particularly a kind of multi-functional oil pumping, it is by linkage connector (1), solid connecting rod (2), upper connection (3), working barrel (4), piston joint (5), piston oil drainage hole (6), piston (7), following valve seat (8), valve body (9), standing valve body (10), standing valve seat (11), sealing duct (12), jump ring (13), limit body (14), pressed joint (15), piston limit body (16), short circuit under the pump (17) and piston ring (18) are formed, it is characterized in that: linkage connector (1) is connected with solid connecting rod (2), is connected to piston limit body (16) on the solid connecting rod (2) successively, piston joint (5), piston oil drainage hole (6), piston (7), following valve seat (8), valve body (9), standing valve body (10), sealing duct (12), jump ring (13); Pump barrel is to be connected with working barrel (4) by upper connection (3), is connected to short circuit (17) under pressed joint (15), the pump successively, is welded with standing valve seat (11), limit body (14) on pressed joint, is embedded with piston ring (18) on piston (7).