CN201496049U

CN201496049U - Oil well anti-plugging oil pump

Info

Publication number: CN201496049U
Application number: CN2009203052784U
Authority: CN
Inventors: 任平
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-29
Filing date: 2009-06-29
Publication date: 2010-06-02
Anticipated expiration: 2019-06-29

Abstract

The utility model discloses an oil well anti-plugging oil pump which comprises a working barrel vertically disposed. The lower end of the working barrel is connected with an outer barrel, the lower end of the outer barrel is connected with a perforated pipe through a joint, a tubing pump is vertically disposed inside the working barrel, an inner barrel is disposed vertically inside the outer barrel, a fixed valve is mounted at the upper end of the inner barrel, a spherical valve cover is mounted on the fixed valve, the lateral wall of the spherical valve cover is provided with a liquid outlet, a sand-retaining ring is disposed on the outer wall next to the inner barrel, the upper end of the sand-retaining ring contacts tightly with the lower end of the tubing pump, and the lower end of the sand-retaining ring is fixed on the joint. The oil well anti-plugging oil pump is capable of preventing the pump from being stuck by impurities and prolonging the service life of the oil pump, and has the advantages of easy fabrication, low cost and convenient use and maintenance.

Description

Anti-oil well stops up oil well pump

Technical field

The utility model belongs to technical field of petroleum extraction, is specifically related to a kind of anti-oil well and stops up oil well pump.

Background technology

At present, along with people constantly carry out the exploitation of oil, at the oil exploitation scene, oil well pump is when taking out down-hole crude oil, and the sand in the well liquid is blocked plunger, pump barrel than the seal clearance that is easier to enter oil well pump inside, influences the oil well operation.

Summary of the invention

The purpose of this utility model provides a kind of anti-oil well and stops up oil well pump, has solved in the process of oil pumping, and the impurity in the oil enters into the problem that causes holddown in the pump.

The technical scheme that the utility model adopted is, a kind of anti-oil well stops up oil well pump, the seating nipple that comprises vertical setting, the seating nipple lower end is connected with urceolus, the lower end of urceolus is connected with floral tube by joint, in seating nipple, vertically be provided with tubing pump, in urceolus, vertically be provided with inner core, upper end at inner core is equipped with standing valve, spherical valve cover also is installed on the standing valve, has liquid outlet on the sidewall of spherical valve cover, the outer wall of pressing close to inner core is provided with sand retaining ring, the sand retaining ring upper end closely contacts with the lower end of tubing pump, and the lower end of sand retaining ring is fixed on the joint.

The beneficial effects of the utility model are: sand retaining ring has stopped that most impurity makes impurity fall into the annular space bottom between inner core and the urceolus, drop into impurity on the spherical valve cover and continue to drop to annular space bottom between inner core and the urceolus, impurity such as silt just can not stop in tubing pump or standing valve and cause holddown like this, prolong oil well pump application life, and handling ease, cost is low, working service is convenient.

Description of drawings

Fig. 1 is the structural representation that the anti-oil well of the utility model stops up oil well pump.

Among the figure, 1. tubing pump, 2. spherical valve cover, 3. standing valve, 4. urceolus, 5. inner core, 6. joint, 7. floral tube, 8. liquid outlet, 9. sand retaining ring, 10. seating nipple.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is elaborated.

Structure of the present utility model as shown in Figure 1, the seating nipple 10 that comprises vertical setting, seating nipple 10 lower ends are connected with urceolus 4, the lower end of urceolus 4 is connected with floral tube 7 by joint 6, in seating nipple 10, vertically be provided with tubing pump 1, in urceolus 4, vertically be provided with inner core 5, the standing valve 3 of tubing pump 1 is installed in the upper end of inner core 5, spherical valve cover 2 also is installed on the standing valve 3, have liquid outlet 8 on the sidewall of spherical valve cover 2, the outer wall of pressing close to inner core 5 is provided with sand retaining ring 9, and sand retaining ring 9 upper ends closely contact with the lower end of tubing pump 1, and the lower end of sand retaining ring 9 is fixed on the joint 6.

The course of work of the utility model oil well pump is, in following pump process, after the tubing string that impurity such as silt connect by seating nipple 10 upper ends enters in the seating nipple 10, sand retaining ring 9 has stopped that most impurity makes impurity fall into the annular space bottom between inner core 5 and the urceolus 4, sub-fraction impurity drops on the spherical valve cover 2, continue to drop to the annular space bottom between inner core 5 and the urceolus 4 then, impurity such as silt just can not stop in tubing pump 1 or standing valve 3 and cause holddown.In oil pumping process, when impurity such as the silt of down-hole enter in the pump by standing valve 3 along with liquid stream by inner core 5 again, through after the stopping of the deceleration of liquid outlet 8 and sand retaining ring 9, also be deposited in the annular space bottom between inner core 5 and the urceolus 4 then, make in oil pumping process impurity such as silt also can in tubing pump 1 or standing valve 3, not stop and cause holddown.

The utility model oil well pump, sand retaining ring 9 prevent the sand card playing, and alleviate the effect of sand milling, prolong oil well pump application life, and the utility model device handling ease, and cost is low, working service is convenient.

Claims

1. an anti-oil well stops up oil well pump, it is characterized in that, the seating nipple (10) that comprises vertical setting, seating nipple (10) lower end is connected with urceolus (4), the lower end of urceolus (4) is connected with floral tube (7) by joint (6), vertically be provided with tubing pump (1) in the described seating nipple (10), vertically be provided with inner core (5) in the described urceolus (4), in the upper end of inner core (5) standing valve (3) is installed, spherical valve cover (2) also is installed on the standing valve (3), have liquid outlet (8) on the sidewall of spherical valve cover (2), the outer wall of pressing close to inner core (5) is provided with sand retaining ring (9), sand retaining ring (9) upper end closely contacts with the lower end of tubing pump (1), and the lower end of sand retaining ring (9) is fixed on the joint (6).