CN216554320U

CN216554320U - Oil-drainage gas-proof and anti-blocking oil well pump

Info

Publication number: CN216554320U
Application number: CN202123145831.2U
Authority: CN
Inventors: 唐勇; 黄永超; 赵玉华; 王晓飞; 王文启; 张胜华; 唐兵; 聂庆伟
Original assignee: Henan Zyzj Pump Equipment Co ltd
Current assignee: Henan Zyzj Pump Equipment Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-17
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses an oil-drainage, gas-prevention and blockage-prevention oil well pump which comprises an outer pipe assembly, a pump cylinder assembly, a plunger assembly, an oil drainer assembly, a flow dividing device assembly, a fixed valve cover assembly, a lengthened coupling and a bridge joint, wherein the outer pipe assembly is connected with the pump cylinder assembly through a pipeline; the lower end of the outer pipe assembly is connected with the external thread at the upper end of the oil drainer assembly; the pump barrel assembly is arranged in the outer pipe assembly; the lower end of the pump barrel assembly is connected with the internal thread at the upper end of the oil drainer assembly; the external thread at the lower end of the oil drain assembly is connected with a lengthened coupling; the lower end of the lengthened coupling is connected with the external thread of the bridge joint and is used for connecting the sand setting channel in series. The fixed valve cover assembly is arranged at the upper end of the bridge type joint; the fixed valve cover assembly is inserted in an inner hole at the lower end of the oil drain assembly; the plunger assembly is arranged in the pump cylinder assembly; the upper end of the flow distribution device assembly is hermetically connected with an inner hole at the lower end of the oil drain device assembly. The utility model has reasonable structure and compact layout, and solves the problems of air lock, sand blocking and environmental pollution in the process of oil and gas exploitation.

Description

Oil-drainage gas-proof and anti-blocking oil well pump

Technical Field

The utility model relates to the technical field of oil-well pumps, in particular to an oil-drainage, gas-prevention and anti-blocking oil-well pump.

Background

At present, in the process of oil and gas exploitation, sand production and gas outlet conditions exist in part of oil wells, gas locking can occur when an oil well pump mechanically recovers oil, the pump efficiency is reduced, and the oil well pump can not work normally seriously; after sand at the bottom of a well enters the pump barrel, a plunger is easy to clamp with the pump barrel, the plunger is inflexible to operate, the plunger of the pump barrel is seriously clamped, and the oil well pump cannot work. These all can influence the normal drainage of oil well, production operation construction, reduce output, increase the drainage and production cost. Meanwhile, oil in the oil pipe cannot be drained during operation, so that the land and the environment of a well site are polluted, the ecological environment is influenced, and the production and the life are influenced invariably.

Disclosure of Invention

The utility model aims to provide an oil-drainage, gas-prevention and anti-blocking oil well pump, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an oil-drainage, gas-prevention and blockage-prevention oil well pump comprises an outer pipe assembly, a pump cylinder assembly, a plunger assembly, an oil drainer assembly, a flow dividing device assembly, a fixed valve bonnet assembly, a lengthened coupling and a bridge joint; the lower end of the outer pipe assembly is connected with the external thread at the upper end of the oil drainer assembly; the pump barrel assembly is arranged in the outer pipe assembly; the lower end of the pump barrel assembly is connected with the internal thread at the upper end of the oil drainer assembly; the external thread at the lower end of the oil drainer assembly is connected with the lengthened coupling; the lower end of the lengthened coupling is connected with the external thread of the bridge joint and is used for connecting the sand setting channel in series. The fixed valve cover assembly is arranged at the upper end of the bridge type joint; the fixed valve cover assembly is inserted into an inner hole at the lower end of the oil drain assembly; the plunger assembly is placed in the pump cylinder assembly and can freely move up and down to finish the up-stroke and the down-stroke, and the plunger assembly and the pump cylinder assembly are rigidly sealed; the upper end of the flow dividing device assembly is hermetically connected with an inner hole at the lower end of the oil drainer assembly; the outer pipe assembly comprises a pump coupling, an outer pipe and a reducing coupling which are sequentially connected through threads from top to bottom; the pump cylinder assembly comprises an upper pump cylinder, a middle pump cylinder and a lower pump cylinder which are sequentially connected through threads from top to bottom; the plunger assembly comprises a joint, a long plunger with a hole and a solid pressing cap which are sequentially connected through threads from top to bottom; an exhaust hole is formed in the middle of the long plunger with the hole; the oil drainer assembly comprises an oil drainer body; the oil drainer body is provided with two channels, the first channel is an oil drainage hole, and the second channel is an annular channel communicated with the outside of the pump cylinder assembly; the oil drainage hole is provided with a hollow pin; the fixed valve cover assembly comprises a fixed valve cover body and a second one-way valve arranged in the fixed valve cover body; the bridge type joint is provided with two channels, namely an oil inlet channel and a sand setting channel.

Further, the shunt device assembly comprises a shunt device body; a shunting hole is formed in the shunting device body; the flow divider assembly further comprises a first one-way valve; the first one-way valve is connected with the interior of the flow dividing device body in a compression mode through a compression joint;

furthermore, the middle pump cylinder is a lengthened pump cylinder; the inner hole of the middle pump cylinder is larger than the inner holes of the upper pump cylinder and the lower pump cylinder.

Furthermore, the upper end of the long plunger with the hole is always outside the upper pump barrel.

Furthermore, the hollow pin is in threaded connection with the oil drainage hole.

Further, the upper end of the bridge type joint is in threaded connection with the fixed valve cover body.

Further, an annulus is formed between the pump cylinder assembly and the outer pipe assembly; the second passage of the oil drainer body is an annular passage communicated with an annulus formed between the pump cylinder assembly and the outer pipe assembly.

Further, the bridge joint oil inlet channel is a central hole of the bridge joint; the bridge type joint sand setting channel is an annular channel communicated with an annulus formed between the pump cylinder assembly and the outer pipe assembly.

Compared with the prior art, the utility model provides an oil-drainage gas-proof and anti-blocking oil well pump, which has the following beneficial effects:

1. prevent the airlock, the gas storage in the well liquid is in well pump barrel, discharges the oil-well pump through the exhaust hole on the foraminiferous long plunger, effectively prevents the influence of gas to the oil-well pump, improves the pump efficiency.

2. Prevent the sand card, adopt extension plunger, foraminiferous long plunger upper end exposes the top at last pump barrel all the time, prevents that the solid particle in the well liquid from falling into the pump barrel, causes the card pump phenomenon, prolongs the pump examination cycle of oil-well pump, reduces the oil recovery cost.

3. Meanwhile, the special oil drain device is arranged, so that a channel between the oil pipe and the sleeve can be opened when the pump pipe of the oil well is lifted up, well liquid is discharged into the well bottom sleeve, the well site ground can be effectively prevented from being polluted by the well liquid, the environment is protected, and the labor intensity of the well bottom is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:

FIG. 1 is a schematic view of a structure of an oil-drainage, gas-prevention and anti-jamming oil-well pump according to the present invention;

FIG. 2 is a view A-A of the present invention;

FIG. 3 is a B-B diagram of the present invention.

In the figure:

a pump collar 1; a joint 2; a long plunger 3 with a hole; a pump barrel 4; a middle pump barrel 5; an outer tube 6; a lower pump barrel 7; a solid gland 8; a reducing coupling 9; an oil drainer body 10; a hollow pin 11; a shunt device body 12; a check valve 13; a compression fitting 14; a fixed valve cover body 15; a check valve 16; lengthening a coupling 17; a bridge joint 18; an exhaust hole 19; an oil drain hole 20; an oil inlet passage 21; a sand setting passage 22; a second channel 23.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening profiles, or both. The meaning of the above terms in the present invention can be understood by those of ordinary skill in the art as the case may be.

Fig. 1, 2, and 3 are drawings of an embodiment of the present disclosure, please refer to that, the embodiment provides an oil-drainage, gas-prevention, and oil-blocking prevention oil pump, which includes an outer tube assembly, a pump cylinder assembly, a plunger assembly, an oil drainer assembly, a flow divider assembly, a fixed valve cover assembly, a lengthened coupling 17, and a bridge joint 18; the lower end of the outer pipe assembly is connected with the external thread at the upper end of the oil drainer assembly; the pump barrel assembly is arranged in the outer pipe assembly; the lower end of the pump barrel assembly is connected with the internal thread at the upper end of the oil drainer assembly; the external thread at the lower end of the oil drainer assembly is connected with the lengthened coupling 17; the lower end of the lengthened coupling 17 is connected with the external thread of the bridge joint 18; the fixed valve cover assembly is arranged at the upper end of the bridge type joint 18; the fixed valve cover assembly is inserted into an inner hole at the lower end of the oil drain assembly; the plunger assembly is placed in the pump barrel assembly; the plunger assembly and the pump cylinder assembly are sealed in a rigid manner; the upper end of the flow dividing device assembly is connected with an inner hole at the lower end of the oil drainer assembly in a sealing manner.

The outer pipe assembly comprises a pump coupling 1, an outer pipe 6 and a reducing coupling 9 which are sequentially connected through threads from top to bottom; the pump cylinder assembly comprises an upper pump cylinder 4, a middle pump cylinder 5 and a lower pump cylinder 7 which are sequentially connected through threads from top to bottom; wherein the middle pump cylinder 5 is a lengthened pump cylinder; the inner hole of the middle pump cylinder 5 is larger than the inner holes of the upper pump cylinder 4 and the lower pump cylinder 7, and the middle pump cylinder is mainly used for storing gas in the pump.

The plunger assembly comprises a connector 2, a long plunger 3 with a hole and a solid pressing cap 8 which are sequentially connected through threads from top to bottom; an exhaust hole 19 is formed in the middle of the long plunger with the hole; in use, when the vent hole 19 enters the middle pump barrel 5, gas entering the interior of the pump barrel is vented out of the pump through the vent hole 19.

The oil drainer assembly comprises an oil drainer body 10; the oil drainer body 10 is provided with two passages, wherein the first passage is an oil drainage hole 20 and is used for oil passing; the second channel 23 is an annular channel communicated with the outside of the pump cylinder assembly and used for settling sand; specifically, an annulus is formed between the pump cylinder assembly and the outer pipe assembly; the second passage 23 of the oil drainer body 10 is an annular passage communicated with an annulus formed between the pump cylinder assembly and the outer pipe assembly; the oil drainage hole 20 is provided with a hollow pin 11; the hollow pin 11 is in threaded connection with the oil drainage hole 20.

The fixed valve cover assembly comprises a fixed valve cover body 15 and a second one-way valve 16 arranged in the fixed valve cover body 15 and used as a suction inlet of the oil well pump. The upper end of the bridge joint 18 is in threaded connection with the fixed valve housing body 15 and is used for pressing the second one-way valve 16.

The bridge joint 18 is provided with two passages, namely an oil inlet passage 21 and a sand setting passage 22. Specifically, the bridge joint oil inlet channel 21 is a central hole of the bridge joint 18; the bridge joint sand setting passage 22 is an annular passage communicated with an annulus formed between the pump cylinder assembly and the outer pipe assembly.

The shunt device assembly comprises a shunt device body 12; a shunt hole is formed in the shunt device body 12; the flow divider assembly further comprises a first one-way valve 13; the first one-way valve 13 is connected with the interior of the flow dividing device body 12 in a compression mode through a compression joint 14. The first check valve 13 is mainly used for controlling the flow direction of oil in the oil pump cylinder.

Furthermore, the upper end of the long plunger 3 with the hole is always outside the upper pump cylinder 4, so that sand grains and the like in oil can be prevented from entering the pump cylinder, and the pump clamping of the plunger pump cylinder is avoided. When the upper-stroke plunger assembly works, the upper-stroke plunger assembly moves upwards, bottom oil enters the lower part of the lower pump barrel through the oil inlet channel 21 of the bridge joint 18, the second check valve 16 of the fixed valve cover and the flow dividing device assembly, the plunger assembly continues to move upwards, and the upper stroke is completed after the lower end of the long plunger 3 with the hole passes through the middle pump barrel; then the plunger assembly moves downwards to push the well fluid to open the first check valve 13 of the flow dividing device and discharge the well fluid out of the pump cylinder, meanwhile, the gas in the well fluid stays in the annular space between the middle pump cylinder and the long plunger with holes due to density, and when the hole site of the long plunger with holes 3 reaches the middle pump cylinder, the gas is discharged through the vent hole 19 on the long plunger with holes 3. Meanwhile, well liquid discharged by the plunger assembly in a downward direction is discharged from the pump cylinder through the first check valve 13 of the flow dividing device and enters an annular space between the pump cylinder assembly and the outer pipe assembly, the well liquid is lifted to the ground in the repeated work of the upward stroke and the downward stroke of the plunger, and meanwhile sand grains in the well liquid enter the sand setting channel 22 due to the action of gravity and enter the tail pipe.

During operation, after the plunger assembly is lifted, the impact rod is thrown into the well bottom to break the hollow pin 11 of the oil drain assembly, so that well liquid in the oil pipe can enter the oil well pump casing, the well liquid is prevented from polluting the ground when the oil pipe string is lifted, and the labor intensity is reduced.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, although the present invention is described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil-drainage, gas-prevention and blockage-prevention oil well pump is characterized by comprising an outer pipe assembly, a pump barrel assembly, a plunger assembly, an oil drainer assembly, a flow dividing device assembly, a fixed valve bonnet assembly, a lengthened coupling (17) and a bridge joint (18); the lower end of the outer pipe assembly is connected with the external thread at the upper end of the oil drainer assembly; the pump barrel assembly is arranged in the outer pipe assembly; the lower end of the pump barrel assembly is connected with the internal thread at the upper end of the oil drainer assembly; the external thread at the lower end of the oil drain assembly is connected with the lengthened coupling (17); the lower end of the lengthened coupling (17) is connected with the external thread of the bridge joint (18); the fixed valve cover assembly is arranged at the upper end of the bridge type joint (18); the fixed valve cover assembly is inserted in an inner hole at the lower end of the oil drain assembly; the plunger assembly is placed in the pump barrel assembly; the plunger assembly and the pump cylinder assembly are sealed in a rigid manner; the upper end of the flow dividing device assembly is hermetically connected with an inner hole at the lower end of the oil drainer assembly; the outer pipe assembly comprises a pump coupling (1), an outer pipe (6) and a reducing coupling (9) which are sequentially connected through threads from top to bottom; the pump cylinder assembly comprises an upper pump cylinder (4), a middle pump cylinder (5) and a lower pump cylinder (7) which are sequentially connected through threads from top to bottom; the plunger assembly comprises a joint (2), a long plunger (3) with a hole and a solid pressing cap (8) which are sequentially connected through threads from top to bottom; an exhaust hole (19) is formed in the middle of the long plunger with the hole; the oil drainer assembly comprises an oil drainer body (10); the oil drainer body (10) is provided with two channels, the first channel is an oil drainage hole (20), and the second channel (23) is an annular channel communicated with the outside of the pump cylinder assembly; a hollow pin (11) is arranged on the oil drainage hole (20); the fixed valve cover assembly comprises a fixed valve cover body (15) and a second one-way valve (16) arranged in the fixed valve cover body (15); the bridge type joint (18) is provided with two channels, namely an oil inlet channel (21) and a sand setting channel (22).

2. The oil drainage, gas prevention and oil blocking prevention oil well pump as recited in claim 1, characterized in that the flow dividing device assembly comprises a flow dividing device body (12); a shunt hole is formed in the shunt device body (12); the flow divider assembly further comprises a first one-way valve (13); the first one-way valve (13) is connected with the interior of the flow dividing device body (12) in a compression mode through a compression joint (14).

3. The oil-drainage gas-proof oil-well pump as claimed in claim 1 or 2, characterized in that the middle pump cylinder (5) is a lengthened pump cylinder; the inner hole of the middle pump cylinder (5) is larger than the inner holes of the upper pump cylinder (4) and the lower pump cylinder (7).

4. The oil-drainage gas-proof oil-well pump as claimed in claim 3, characterized in that the upper end of the long plunger (3) with hole is always outside the upper pump barrel (4).

5. The oil-drainage, gas-prevention and anti-blocking oil well pump as claimed in claim 1, 2 or 4, characterized in that the hollow pin (11) is in threaded connection with the oil drainage hole (20).

6. The oil-drainage and gas-prevention oil well pump as claimed in claim 1, 2 or 4, characterized in that the upper end of the bridge joint (18) is in threaded connection with the fixed valve cover body (15).

7. The oil-drainage and gas-prevention oil well pump as claimed in claim 1, 2 or 4, wherein an annulus is formed between the pump cylinder assembly and the outer tube assembly; and a second passage (23) of the oil drainer body (10) is an annular passage communicated with an annulus formed between the pump cylinder assembly and the outer pipe assembly.

8. The oil-drainage and gas-prevention oil-well pump as claimed in claim 7, wherein the bridge joint oil inlet passage (21) is a central hole of the bridge joint (18); the bridge type joint sand setting channel (22) is an annular channel communicated with an annulus formed between the pump cylinder assembly and the outer pipe assembly.