Plunger device suitable for plunger gas-lift oil extraction of horizontal well

Abstract

The plunger device comprises a plunger mechanism, a buffering mechanism and an oil conveying mechanism, the plunger mechanism is composed of an outer pipe sleeve, a suction pipe, an oil pumping piston and a sleeving seat, the outer pipe sleeve is hollow and is connected with the telescopic oil pumping piston in a sliding and telescopic mode, and the oil pumping piston is connected with the buffering mechanism in a sliding and telescopic mode. The top end of the oil pumping piston is provided with an annular sleeve cover, the top end of the annular sleeve cover is provided with a silicon rubber sleeve, the middle of the top end of the silicon rubber sleeve is sleeved with an annular sleeve, the surface of the annular sleeve is provided with a fastening screw, and the middle of the top end of the fastening screw is provided with a circular opening. When the oil extraction device is dragged through the adopted rubber sleeve and the suction pipe, oil can be sucked into the corresponding outer pipe sleeve from the position of the oil pumping piston, the oil pumping piston grabs a little crude oil along the outer pipe sleeve when the oil extraction device is inflated by the air connection pump, and liquid extraction and transfer are achieved according to the position of the liquid drainage hole and one end of the arc-shaped guide pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to crude oil exploitation technical field, concretely is a plunger device suitable for horizontal well plunger gas lift oil production. BACKGROUND

[0002] Plunger gas lift: plunger gas lift utilizes the plunger that freely moves to move up and down in the oil pipe, and oil is lifted from the well. The gas lift energy comes from the gas in the annular space of the oil pipe - casing. The most commonly used gas lift gas is associated gas. There is a valve at the bottom of the plunger, and when the plunger falls by gravity, the valve opens to allow oil into the oil pipe. When the plunger collides with the bumper at the bottom of the well, the valve closes. The gas in the well or the injected gas makes the plunger move upward to lift the oil. When the plunger hits a bumper at the wellhead, the valve is opened, and the plunger falls by gravity and collides with the bumper at the bottom of the well, and the plunger moves up and down repeatedly to lift the oil to the ground. Plunger gas lift can be used for high gas-oil ratio wells with weak self-flowing capacity or low production.

[0003] After searching, the application number: CN201921702960.7 for daily chemical filling plunger device is found;

[0004] The utility model discloses a filling plunger device for daily chemical, relates to plunger device technical field, in order to solve the problem that the structure of current daily chemical filling plunger device is big, and the filling process is complex, is not suitable for simple and convenient filling process. The lower portion of plunger device main sleeve rod is installed with fixed installation sleeve rod, the lower portion of fixed installation sleeve rod is installed with telescopic sleeve rod, the lower portion of telescopic sleeve rod is installed with fixed filling round head, the middle position of fixed filling round head lower extreme is installed with filling extension pipeline, the upper portion of plunger device main sleeve rod is installed with upper fixed mounting head, the upper end of upper fixed mounting head is provided with upper feeding pipeline, the middle position of upper feeding pipeline upper portion is installed with upper feeding pipeline, the inside of plunger device main sleeve rod is installed with main mobile plunger rod.

[0005] In addition to the conventional plunger gas lift oil production technology, it is difficult to collect crude oil in the oil field pipeline, and the oil liquid transfer is not smooth, the crude oil itself is viscous, there is no shunt alternative scheme, and the oil is discharged in one direction only, which increases the probability of oil passage blockage. INVENTION CONTENTS

[0006] The utility model aims at providing a plunger device suitable for horizontal well plunger gas lift oil production to solve the problem of the above background technology, which is in addition to the conventional plunger gas lift oil production technology, it is difficult to collect crude oil in the oil field pipeline, and the oil liquid transfer is not smooth, the crude oil itself is viscous, there is no shunt alternative scheme, and the oil is discharged in one direction only, which greatly increases the source capacity and causes irreversible influence on oil pumping efficiency.

[0007] To achieve the above object, the utility model provides the following technical scheme: a plunger device suitable for horizontal well plunger gas lift oil production, including plunger mechanism, buffer mechanism and oil delivery mechanism,

[0008] The plunger mechanism comprises:

[0009] It is composed of an outer sleeve, a suction pipe, an oil pumping piston and a sleeve seat:

[0010] The outer sleeve is hollow inside and is connected with the oil pumping piston for telescopic extension and retraction, the top end of the oil pumping piston is provided with an annular cover, the top end of the annular cover is provided with a silica gel sleeve, the top end of the silica gel sleeve is provided with an annular sleeve, the surface of the annular sleeve is provided with a fastening screw, the top end of the fastening screw is provided with a circular hole, and the bottom end of the suction pipe is in sealed communication with one end of the circular hole.

[0011] As a preferred scheme of the utility model, a liquid drainage hole is formed in the edge side wall of the suction pipe, one end of the liquid drainage hole is in sealed communication with an arc-shaped guide pipe, and the bottom end of the oil pumping piston is provided with a buffer mechanism.

[0012] The buffer mechanism comprises a buffer sleeve corresponding to the position of the oil pumping piston, and the bottom end of the buffer sleeve is provided with a buffer support rod.

[0013] As a preferred scheme of the utility model, the bottom end of the buffer support rod is provided with a buffer base, the bottom end of the buffer base is fixedly connected with the bottom of the horizontal well, the bottom surface of the outer sleeve is provided with a rubber sleeve, and the side wall of the outer sleeve is provided with an oil delivery mechanism.

[0014] As a preferred scheme of the utility model, the oil delivery mechanism comprises a side wall oil pumping hole, a plurality of pipe valves, an adjusting valve and a U-shaped liquid receiving pipe.

[0015] The side wall oil pumping hole is sequentially formed in the outer side wall of the outer sleeve, and a plurality of pipe valves are sequentially and correspondingly arranged between the side wall oil pumping holes.

[0016] As a preferred scheme of the utility model, the surface of the plurality of pipe valves is sequentially and correspondingly provided with the adjusting valve, the other end of the pipe valve is sequentially and correspondingly provided with the U-shaped liquid receiving pipe, the middle part of the U-shaped liquid receiving pipe is provided with an oil delivery pipe, the surface of the oil delivery pipe is provided with an oil delivery hole, the top end of the oil delivery hole is provided with an annular sleeve, the top end of the annular sleeve is provided with a sleeve, and the end of the sleeve is provided with a connecting sleeve.

[0017] As a preferred scheme of the utility model, the end of the connecting sleeve is provided with a gas connection mechanism.

[0018] The gas connection mechanism comprises an inflation sleeve arranged at the end of the connecting sleeve, the middle part of the inflation sleeve is provided with a gas connection pipe, the gas connection pipe is in communication with a gas connection pump, and the gas outlet of the gas connection pump is in communication with the top end of the outer sleeve.

[0019] As a preferred scheme of the utility model: the outer pipe cover top end is connected with an arc-shaped communication connector pipe, and the surface of the arc-shaped communication connector pipe is provided with a gas pressure detection table.

[0020] Compared with the prior art, the utility model has the beneficial effects that:

[0021] 1) The oil liquid can be attracted to the corresponding outer pipe cover from the position of the oil pumping piston by the rubber sleeve and the suction pipe in the oil extractor traction, and the oil pumping piston extracts a little crude oil in the outer pipe cover when the gas connection pump is inflated, so that the liquid extraction and transfer are realized according to the position of the liquid drainage hole and one end of the arc-shaped guide pipe, the technical operation of the plunger oil extraction is solved, the oil pipe is prevented from being blocked, and the crude oil extraction efficiency is high.

[0022] 2) The side wall oil pumping hole and the pipe valve position transfer the crude oil in the underground oil layer to the position of the U-shaped liquid connection pipe, and the multiple sleeves and the oil conveying pipe are used to disperse the crude oil, so that the blockage caused by the single reliance on a conveying pipe is avoided, and the crude oil extraction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the utility model;

[0024] Figure 2 It is a front structure schematic view of the utility model;

[0025] Figure 3 It is a suction pipe structure schematic view of the utility model;

[0026] Figure 4 It is a buffer mechanism structure schematic view of the utility model;

[0027] Figure 5 It is an oil conveying pipe structure schematic view of the utility model;

[0028] Figure 6 It is an outer pipe cover structure schematic view of the utility model.

[0029] In the drawing: 1, plunger mechanism; 11, outer pipe cover; 111, rubber sleeve; 12, suction pipe; 121, liquid drainage hole; 122, arc-shaped guide pipe; 13, oil pumping piston; 131, annular cover; 132, silica gel sleeve; 133, annular sleeve; 134, circular opening; 14, sleeve seat;

[0030] 2, buffer mechanism; 21, buffer sleeve; 22, buffer support rod; 23, buffer base;

[0031] 3, oil delivery mechanism; 31, side wall oil pumping hole; 32, pipe valve; 33, regulating valve; 34, U-shaped liquid receiving pipe; 35, oil delivery pipe; 36, oil delivery hole; 37, annular sleeve; 38, sleeve; 39, connecting sleeve;

[0032] 4, gas connection mechanism; 41, gas filling sleeve; 42, gas connection pipe; 43, gas connection pump; 44, arc-shaped communication connecting pipe; 45, gas pressure gauge. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] Please refer to Figure 1 Figure 6 The present application provides a technical solution: a plunger device suitable for horizontal well plunger gas lift oil production, comprising a plunger mechanism 1, a buffer mechanism 2 and an oil delivery mechanism 3.

[0035] Plunger mechanism 1:

[0036] Composed of: outer pipe sleeve 11, suction pipe 12, oil pumping piston 13 and sleeve seat 14:

[0037] The inner part of the outer pipe sleeve 11 is hollow, and the oil pumping piston 13 for extension and retraction is connected by sliding extension and retraction, the top end of the oil pumping piston 13 is provided with an annular sleeve cover 131, the top end of the annular sleeve cover 131 is provided with a silica gel sleeve 132, the top end of the silica gel sleeve 132 is provided with an annular sleeve 133, the surface of the annular sleeve 133 is provided with a fastening screw, the top end of the fastening screw is provided with a circular hole 134, and the bottom end of the suction pipe 12 is in sealed communication with one end of the circular hole 134.

[0038] In this embodiment: the edge side wall of the suction pipe 12 is provided with a liquid drainage hole 121, one end of the liquid drainage hole 121 is in sealed communication with an arc-shaped conduit 122, and the bottom end of the oil pumping piston 13 is provided with a buffer mechanism 2:

[0039] The buffer mechanism 2 comprises a buffer sleeve 21 corresponding to the position of the oil pumping piston 13, and the bottom end of the buffer sleeve 21 is provided with a buffer support rod 22.

[0040] The arc-shaped conduit 122 and the suction pipe 12 are adopted, crude oil reaches the suction pipe 12 from the arc-shaped conduit 122, and finally transfers crude oil into the outer pipe sleeve 11.

[0041] ​In the embodiment, the bottom of the buffer support rod 22 is provided with a buffer base 23, the bottom of the buffer base 23 is fixedly connected with the horizontal well bottom, the bottom surface of the outer pipe sleeve 11 is sleeved with a rubber sleeve 111, and the lateral wall of the outer pipe sleeve 11 is provided with an oil delivery mechanism 3.

[0042] The rubber sleeve 111 and the buffer base 23 are adopted to ensure that the oil pumping piston 13 has a buffer when it is lowered to the well bottom, thereby avoiding damage to the piston assembly.

[0043] In the embodiment, the oil delivery mechanism 3 comprises a lateral wall oil pumping hole 31, a plurality of pipe valves 32, an adjusting valve 33 and a U-shaped liquid receiving pipe 34.

[0044] The lateral wall oil pumping hole 31 is sequentially arranged on the lateral wall of the outer pipe sleeve 11, and the plurality of pipe valves 32 are sequentially arranged between the lateral wall oil pumping holes 31.

[0045] The pipe valves 32 and the lateral wall oil pumping holes 31 are adopted to ensure that the crude oil reaches the pipe valves 32 from the outer pipe sleeve 11 and is then branched to avoid blocking the crude oil pipe.

[0046] In the embodiment, the surface of each pipe valve 32 is sequentially provided with an adjusting valve 33, the other end of the pipe valve 32 is sequentially communicated with the U-shaped liquid receiving pipe 34, the middle part of the U-shaped liquid receiving pipe 34 is provided with an oil delivery pipe 35, the surface of the oil delivery pipe 35 is provided with an oil delivery hole 36, the top end of the oil delivery hole 36 is connected with an annular sleeve 37, the top end of the annular sleeve 37 is sleeved with a sleeve 38, and the end of the sleeve 38 is provided with a connecting sleeve 39.

[0047] The crude oil passes through the U-shaped liquid receiving pipe 34 and the oil delivery pipe 35 to transfer the liquid to the connecting sleeve 39 and then to the external oil storage tank, thereby avoiding blocking caused by too thick crude oil.

[0048] In the embodiment, the end of the connecting sleeve 39 is provided with a gas connection mechanism 4.

[0049] The gas connection mechanism 4 comprises a gas charging sleeve 41 arranged at the end of the connecting sleeve 39, the middle part of the gas charging sleeve 41 is provided with a gas connection pipe 42, the gas connection pipe 42 is communicated with a gas connection pump 43, and the gas outlet of the gas connection pump 43 is communicated with the top end of the outer pipe sleeve 11.

[0050] The gas connection pump 43 is adopted to form a gas pressure difference inside the pipe sleeve 11.

[0051] In the embodiment, the top end of the outer pipe sleeve 11 is communicated with an arc-shaped communication connecting pipe 44, and the surface of the arc-shaped communication connecting pipe 44 is provided with a gas pressure detection table 45.

[0052] The gas pressure difference inside the outer pipe sleeve 11 is detected to be within a suitable range, thereby avoiding excessive inflation pressure exceeding the maximum pressure bearing of the oil pipe.

[0053] Specific use, first step one: vertical screen plunger placement;

[0054] At this time, the area of the oil field is drilled, and the outer sleeve 11 is placed in the oil extraction area of the oil field (horizontal well). According to the sleeve connection of the outer sleeve 11, the oil extraction is carried out by using the oil extraction piston 13 in the outer sleeve 11. Through the one end of the oil extraction piston 13, the hole position of the annular cover 131 and the circular opening 134 is connected in the state, and the oil extraction device of the oil field is lifted up and down at this moment. The suction pipe 12 and the oil extraction piston 13 move around the inner wall of the outer sleeve 11. Finally, the movement of the oil extraction piston 13 will cause the outer sleeve 11 to form a suction pressure difference, and the oil will enter the inside of the outer sleeve 11 through the bottom position of the rubber sleeve 111. With the channel of the suction pipe 12 specially sucking oil, it is convenient to transfer crude oil to the outside;

[0055] Step two: transfer oil;

[0056] The gas connection pump 43 in the gas connection mechanism 4 is opened to suck crude oil in the oil extraction pipe with enough pressure, which can be transferred to the inside of the outer sleeve 11 along the arc-shaped connecting pipe 44, and a pressure difference is formed. At this time, the oil will enter the inside of the suction pipe 12 from the oil extraction piston 13, and finally realize flow guiding from the arc-shaped pipe 122. With the help of the suction force, the oil is transferred from the outer sleeve 11 to the side wall oil extraction hole 31, and then to the adjusting valve 33. The adjusting valve 33 is opened, and the oil is divided into three ways to the inside of the U-shaped liquid connection pipe 34. Finally, the flow is divided to reach the position of the oil conveying pipe 35. Finally, it is uniformly collected according to the direct transfer of the oil conveying hole 36 to the U-shaped liquid connection pipe 34, and finally uniformly transferred to the position of the oil conveying pipe 35. The oil transfer is realized.

[0057] The oil extracted by the gas connection pipe 42 and the gas connection pump 43 is uniformly dispersed to multiple pipelines to complete the oil transfer.

[0058] The contents not described in detail in the description belong to the prior art known to those skilled in the art. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A plunger device suitable for horizontal well plunger gas lift oil production, comprising a plunger mechanism (1), a buffer mechanism (2), and an oil delivery mechanism (3). Its features are: The plunger mechanism (1): It consists of: an outer sleeve (11), a suction pipe (12), a sucker piston (13), and a socket (14). The outer sleeve (11) is hollow inside and is slidably connected to a sliding oil piston (13) for extension and retraction. An annular cover (131) is installed at the top of the oil piston (13). A silicone sleeve (132) is provided at the top of the annular cover (131). An annular sleeve (133) is fitted in the middle of the top of the silicone sleeve (132). A fastening screw is provided on the surface of the annular sleeve (133). A circular opening (134) is opened in the middle of the top of the fastening screw. The bottom end of the suction tube (12) is sealed and connected to one end of the circular opening (134).

2. The plunger device for horizontal well plunger gas lift oil production according to claim 1, characterized in that: The suction tube (12) has a liquid drainage hole (121) on its edge sidewall. One end of the liquid drainage hole (121) is sealed and connected to an arc-shaped conduit (122). The bottom end of the oil suction piston (13) is equipped with a buffer mechanism (2). The buffer mechanism (2) includes a buffer sleeve (21) corresponding to the position of the oil sucker piston (13), and the bottom end of the buffer sleeve (21) is provided with a buffer support rod (22).

3. A plunger device for horizontal well plunger gas lift oil production according to claim 2, characterized in that: The bottom of the buffer support rod (22) is equipped with a buffer base (23), the bottom of the buffer base (23) is fixedly connected to the bottom of the horizontal well, the bottom surface of the outer sleeve (11) is fitted with a rubber sleeve (111), and the side wall of the outer sleeve (11) is equipped with an oil delivery mechanism (3).

4. A plunger device for horizontal well plunger gas lift oil production according to claim 3, characterized in that: The oil delivery mechanism (3) includes: a side wall oil extraction hole (31), multiple pipe valves (32), a regulating valve (33), and a U-shaped liquid receiving pipe (34). The side wall oil extraction holes (31) are sequentially opened on the outer side wall of the outer sleeve (11), and several pipe valves (32) are respectively installed between the side wall oil extraction holes (31).

5. A plunger device for horizontal well plunger gas lift oil production according to claim 4, characterized in that: A series of regulating valves (33) are installed on the surface of several pipe valves (32). The other end of the pipe valves (32) is connected to a U-shaped liquid receiving pipe (34). An oil delivery pipe (35) is provided at the middle intersection of the U-shaped liquid receiving pipes (34). An oil delivery hole (36) is opened on the surface of the oil delivery pipe (35). An annular sleeve (37) is connected to the top end of the oil delivery hole (36). A sleeve (38) is sleeved on the top end of the annular sleeve (37). A connecting sleeve (39) is installed at the end of the sleeve (38).

6. A plunger device for horizontal well plunger gas lift oil production according to claim 5, characterized in that: A gas connection mechanism (4) is installed at the end of the connecting sleeve (39); The air connection mechanism (4) includes an air sleeve (41) provided at the end of the connecting sleeve (39), an air pipe (42) is provided in the middle of the air sleeve (41), the air pipe (42) is connected to an air connection pump (43), and the air outlet of the air connection pump (43) is connected to the top end of the outer sleeve (11).

7. A plunger device for horizontal well plunger gas lift oil production according to claim 1, characterized in that: The top of the outer sleeve (11) is connected to an arc-shaped connecting pipe (44), and the surface of the arc-shaped connecting pipe is provided with a pressure gauge (45).

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