Pressurizing jet mixed flushing device under oil well pump and oil well pump

Abstract

The utility model discloses a pressurized jet mixed flushing device under an oil well pump and an oil well pump, and relates to the technical field of oil well pumps, the pressurized jet mixed flushing device comprises an outer shell and further comprises an inner shell, and the inner shell is arranged in the outer shell in a sleeved mode; a protruding ring is arranged on the inner wall of the outer shell, an annular groove is formed in the end face, facing the interior of the outer shell, of the protruding ring, and a water nozzle communicated with the annular groove is arranged on the inner wall of the protruding ring. The inner shell is inserted into the annular groove, and a supporting reset device is arranged between the groove bottom of the annular groove and the inner shell. When the piston moves downwards, the piston collides with the inner shell to enable the inner shell to move downwards to compress the annular groove, compressed liquid in the annular groove releases pressure through the water nozzle, attachments above the fixed valve are fully flushed down to form a mixture, and the mixture is discharged into a tubular column in the ascending process of the piston.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil well pump technology field, concretely is a kind of oil well pump lower pressure jet mixed and is rushed device and oil well pump. BACKGROUND

[0002] Current technical conditions are, deep well pump is mainly relied on the work of piston valve in oil well production, when piston goes up, valve closes and lifts oil to the ground, while fixed valve opens on piston, and oil enters pump barrel. In addition to oil-water mixture, there are many large-diameter particulate matter in the stratum at the inlet of fixed valve. These stratum materials are easily attached to the top and around of fixed valve in the long pumping process. Over time, the attached materials slowly accumulate above the fixed valve, and when they fall, they stick to the valve ball seat, causing the valve ball to work with a loose seal and lose its function. The pipe string cannot be pressurized, causing the well to be down.

[0003] The solution is to bump the pump and wash the well with hot water. The pump and tank truck cooperate to inject high-temperature washing fluid into the wellbore through the oil well annular space, melt and flush the accumulated material on the surface of the fixed valve, and bring the diluted attached material from the wellbore to the ground with the large displacement of the pump truck. If the attached material has strong adsorption capacity, the valve leakage problem can be solved by bumping and flushing. Each time the equipment needs one pump and two tanks, and the cost is 3600 yuan. If the cleaning effect is not good, the well will be down and the operation will be restored. The operation cost is as high as about 80,000 yuan. This increases the production cost of the oil well.

[0004] Publication No. CN117514075A discloses a self-cleaning check valve. During normal oil pumping, liquid enters through the bottom of the valve body. At this time, under the action of the cyclone generator, the liquid starts to rotate and performs the first cleaning on the ball seat and valve ball. When the liquid moves upward, the outlet of the liquid suddenly narrows, and at this time, the self-excitation effect is generated, and the rebound performs the second cleaning on the valve ball and ball seat, thereby ensuring the cleaning of the ball seat and valve ball, and reducing the occurrence of pump leakage accidents caused by foreign matter.

[0005] Publication No. CN212656965U discloses an oil well pipe pump bottom valve. When dealing with the problem of pump bottom sediment and scale accumulation, the sucker rod is lowered to the bottom of the oil well pump to open the valve. The liquid in the oil pipe string will flow back into the ring through the valve, thereby flushing the valve thoroughly. After flushing, the sucker rod is lifted, and the valve returns to normal working condition.

[0006] The utility model discloses a nanometer ceramic multistage spherical surface sealing plunger valve, valve body rod mechanism includes the valve body rod and three valve balls fixed in sequence on the valve body rod with equal spacing, and the inner wall of plunger is equipped with three valve seats, and the valve seat is corresponding with the valve ball, the ball diameter of upper valve ball is less than the ball diameter of middle valve ball, and the ball diameter of lower valve ball is less than the ball diameter of middle valve ball, and the flow velocity gradually increases when liquid flows through, can play the self-cleaning effect of cavity wall surface and valve group.

[0007] The cleaning scheme of the above prior art is different from the present patent, and the cleaning effect of the impact jet scheme of the present patent is better than that of the above prior art.

[0008] In summary, the technical solutions, the technical problems to be solved and the beneficial effects of the above disclosed technologies are different from those of the present utility model, and the above disclosed technology documents do not have technical inspiration for more technical features and the technical problems to be solved and the beneficial effects of the present utility model. Utility model content

[0009] In view of the above defects existing in the prior art, the utility model provides an oil well pump down pressure boosting jet mixed flushing device and oil well pump.

[0010] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0011] On the one hand, the utility model provides an oil well pump down pressure boosting jet mixed flushing device, which comprises an outer shell body, further comprises an inner shell body, the inner shell body is sleeved in the outer shell body, the inner wall of the outer shell body is provided with a convex ring, the end face of the convex ring towards the inside of the outer shell body is provided with a ring groove, and the inner wall of the convex ring is provided with a water nozzle in communication with the ring groove.

[0012] Further, the outer shell body is provided with a first variable diameter part, forming an upper outer shell, an outer transition shell and a lower outer shell.

[0013] Specifically, the inner shell body is provided with a second variable diameter part, forming an upper inner shell, an inner transition shell and a lower inner shell.

[0014] Specifically, the outer diameter of the lower inner shell is same with the inner diameter of the lower outer shell, the convex ring is arranged on the inner wall of the lower outer shell, the outer diameter of the ring groove is same with the inner diameter of the lower outer shell, and the inner diameter of the ring groove is same with the inner diameter of the lower inner shell.

[0015] Specifically, the upper inner shell and the upper outer shell are pressure guiding annulus, and the upper inner shell extends out of the upper outer shell.

[0016] Specifically, the outer transition shell can cooperate with the inner transition shell, and the outer transition shell serves as the upper limit of the inner shell body.

[0017] Further, the inner wall of the convex ring is provided with an inner thread at one end away from the inner shell, for connecting and fixing the valve.

[0018] Further, the water nozzle is provided with at least one group, each group having two, and each group is uniformly distributed along the circumferential direction of the convex ring, and the water nozzle is arranged above the inner thread.

[0019] Further, the water nozzle is inclined downward.

[0020] Further, the support reset device is a support spring.

[0021] Further, a spring support seat is further included, the spring support seat comprises a connecting seat and a guide rod, the convex ring is provided with an axial through hole communicated with the bottom of the ring groove, the connecting seat of the spring support seat is connected with the convex ring, the guide rod passes through the axial through hole into the ring groove, and the bottom of the support spring is sleeved on the guide rod.

[0022] Further, the upper end of the inner shell is connected with a collision member.

[0023] In the second aspect, the utility model provides a sucker rod pump, including fixed valve, the fixed valve upper end is connected with the oil well pump lower pressure jet mixed flushing device of claim one.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] 1. When the piston descends, the piston collides with the inner shell to make the inner shell descend and compress the ring groove, the compressed liquid in the ring groove is released through the water nozzle to form a mixture by fully flushing the adhering matter above the fixed valve, and the mixture is discharged into the pipe column during the upward movement of the piston.

[0026] 2. The utility model can realize the function of lower collision and pressure washing, fully clean the adhering matter on the upper end of the fixed valve, improve the working efficiency of the fixed valve, increase the fullness coefficient of the oil well pump, increase the oil well yield, improve the oil well efficiency, improve the oil extraction rate, and save energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 is a structural schematic view of the oil well pump lower pressure jet mixed flushing device of the utility model;

[0028] Fig. 2 is a structural schematic view of the oil well pump lower pressure jet mixed flushing device applied to the sucker rod pump of the utility model;

[0029] In the figure: 1, water nozzle; 2, support spring; 3, inner shell; 3.1, upper inner shell; 3.2, inner transition shell; 3.3, lower inner shell; 4, outer shell; 4.1, upper outer shell; 4.2, outer transition shell; 4.3, lower outer shell; 5, spring support seat; 6, connecting thread; 7, inner thread; 8, convex ring; 9, ring groove; 10, collision piece; 11, fixed valve; 12, piston. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] Embodiment 1

[0032] Please refer to Figs. 1-2 The utility model provides a kind of pressurization jet flow mixed device under oil well pump, including outer shell 4, inner shell 3, the inner wall of outer shell 4 is provided with convex ring 8, the end face of convex ring 8 towards the inside of outer shell 4 is provided with ring groove 9, the inner wall of convex ring 8 is provided with water nozzle 1 communicated with ring groove 9, the inner shell 3 is set in outer shell 4, one end of inner shell 3 extends into ring groove 9, and support reset device is arranged between the groove bottom of ring groove 9 and inner shell 3.When inner shell 3 moves quickly to ring groove 9, water nozzle 1 will produce jet flow.

[0033] Specifically, inner thread 7 is arranged on the inner wall of convex ring 8 away from inner shell 3, to connect fixed valve 11.

[0034] Specifically, inner shell 3 extends out of outer shell 4, as collision part.

[0035] Specifically, water nozzle 1 is arranged in at least one group, each group has two, and is evenly distributed along the circumferential direction of convex ring 8, and water nozzle 1 is arranged above inner thread 7.

[0036] Preferably, water nozzle 1 is inclined downward.

[0037] Wherein, the size of the diameter of water nozzle 1 is adjusted according to requirements, to form jet water column inside convex ring 8 after pressurization, impact the precipitated material on fixed valve 11, so that it is in mixed state with well fluid.

[0038] Wherein, when piston 12 goes down, collision part of inner shell 3 is touched, so that it is forced to press down, to form a huge force on the liquid in ring groove 9, and the liquid is released through water nozzle 1.

[0039] The outer shell 4 is the outer shell of the device, which has the functions of connecting the upper and lower pipe columns to bear the weight of the lower pipe column and protecting the internal accessories of the device.

[0040] Specifically, the support reset device is a support spring 2, which has the function of providing a restoring force to the inner shell 3 after the inner shell 3 descends after a collision, so that the piston 12 ascends to separate from the inner shell 3, and the liquid in the annular groove 9 is pressed out.

[0041] The device improves the safety factor of oil well production, reduces the well shut-in rate, reduces production cost, and improves work efficiency.

[0042] Example 2:

[0043] In this embodiment, the outer shell 3 is provided with a first variable diameter part, forming an upper outer shell 4.1, an outer transition shell 4.2, and a lower outer shell 4.3, and the inner shell 4 is provided with a second variable diameter part, forming an upper inner shell 3.1, an inner transition shell 3.2, and a lower inner shell 3.3.

[0044] The outer diameter of the lower inner shell 3.3 is the same as the inner diameter of the lower outer shell 4.3, the convex ring 8 is arranged on the inner wall of the lower outer shell 4.3, the outer diameter of the annular groove 9 is the same as the inner diameter of the lower outer shell 4.3, and the inner diameter of the annular groove 9 is the same as the inner diameter of the lower inner shell 3.3, forming a gap seal and realizing sealed pressurization.

[0045] The space between the upper inner shell 3.1 and the upper outer shell 4.1 is a pressure guide annulus, which prevents the outer shell 3 and the inner shell 4 from being locked, the upper inner shell 3.1 extends out of the upper outer shell 4.1, and the end of the upper inner shell 3.1 serves as a collision part.

[0046] The outer transition shell 4.2 can cooperate with the inner transition shell 3.2, and the outer transition shell 4.2 serves as an upper limit for the inner shell 3 to prevent the inner shell 3 from being pulled out.

[0047] In this embodiment, the annular groove 9 is provided with a spring support seat 5, the spring support seat 5 includes a connecting seat and a guide rod, the convex ring 8 is provided with an axial through hole in communication with the bottom of the annular groove 9, the connecting seat of the spring support seat 5 is threadedly connected with the convex ring, the guide rod passes through the axial through hole into the annular groove 9, and the bottom of the support spring 2 is sleeved on the guide rod.

[0048] The spring support seat 5 has the functions of righting and supporting the support spring 2, enabling the support spring 2 to move linearly, uniformly receiving force, and being free from pressure bending and other effects, and the end of the guide rod serves as a lower limit for the inner shell 3 to prevent the support spring 2 from being excessively compressed.

[0049] Specifically, the stroke of the inner shell 3 is 15 cm.

[0050] In the embodiment, the upper end of the upper inner shell 3.1 is provided with a connecting thread 6, which is used for connecting the collision member 10, so as to improve the stress state.

[0051] Embodiment 3:

[0052] Based on the embodiment 2, the embodiment provides a use method of the oil well pump down pressurized jet flow mixed flushing device, and the use method comprises the following steps:

[0053] S1, the oil well pump down pressurized jet flow mixed flushing device is arranged in the oil pumping pump, the inner thread 7 is connected with the upper end of the fixed valve 11, the oil pumping pump is connected with the pipe string and is lowered into the well.

[0054] S2, the oil pumping rod and the piston 12 are lowered to perform the oil pumping operation.

[0055] During the downward stroke, the piston 12 is in contact with the collision member 10, the inner shell body 3 is pressed to move downward, the liquid in the annular groove 9 is compressed, the high-pressure liquid is sprayed out through the water nozzle 1, the attached matters on the upper part of the fixed valve 11 are impacted, the attached matters are mixed with the liquid, and the turbid state is formed.

[0056] During the upward stroke, the turbid liquid is inhaled into the inside of the pipe string along with the piston 12, and one-time automatic cleaning is completed, and the inner shell body 3 is reset upwardly by the supporting spring 2.

[0057] In the application, the parts that are not expanded in the application, the connection mode of the parts in the application all belong to the known technology in the technical field. Direct application can be used, and details are not repeated.

[0058] In the utility model, the term "a plurality of" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense. For example, "connection" can be fixed connection, or detachable connection, or integrally connected. "Connected" can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0059] In the description of the utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear" and the like indicate the orientation or positional relationship shown in the drawing, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or unit must have a specific direction, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the utility model.

[0060] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A booster jet mixing device for oil well pumps, comprising an outer casing, characterized in that, It also includes an inner shell, which is fitted inside the outer shell; The inner wall of the outer shell is provided with a protruding ring, and the end face of the protruding ring facing the inner part of the outer shell is provided with an annular groove. The inner wall of the protruding ring is provided with a water nozzle communicating with the annular groove. The inner shell is inserted into the annular groove, and a support and reset device is provided between the bottom of the annular groove and the inner shell.

2. The booster jet mixing device for oil well pumps according to claim 1, characterized in that, The outer shell is provided with a first variable diameter section, forming an upper outer shell, an outer transition shell, and a lower outer shell; The inner shell is provided with a second variable diameter section, forming an upper inner shell, an inner transition shell, and a lower inner shell; The outer diameter of the lower inner shell is the same as the inner diameter of the lower outer shell. The convex ring is disposed on the inner wall of the lower outer shell. The outer diameter of the annular groove is the same as the inner diameter of the lower outer shell. The inner diameter of the annular groove is the same as the inner diameter of the lower inner shell. There is a pressure-guiding annular space between the upper inner shell and the upper outer shell, and the upper inner shell extends out of the upper outer shell; The outer transition shell can cooperate with the inner transition shell, and the outer transition shell serves as the upper limit of the inner shell.

3. The booster jet mixing device for oil well pumps according to claim 1, characterized in that, The inner wall of the convex ring is provided with internal threads at the end away from the inner shell for connecting and fixing the valve.

4. The booster jet mixing device for oil well pumps according to claim 3, characterized in that, The water taps are provided in at least one group, with up to two taps per group. Each group is evenly distributed along the circumference of the convex ring, and all water taps are located above the internal threads.

5. The booster jet mixing device for oil well pumps according to claim 4, characterized in that, The water nozzle is tilted downwards.

6. The booster jet mixing device for oil well pumps according to claim 1, characterized in that, The support and reset device is a support spring.

7. The booster jet mixing device for oil well pumps according to claim 6, characterized in that, It also includes a spring support seat, which includes a connecting seat and a guide rod. The convex ring is provided with an axial through hole communicating with the bottom of the annular groove. The connecting seat of the spring support seat is connected to the convex ring. The guide rod passes through the axial through hole into the annular groove. The bottom of the support spring is sleeved on the guide rod.

8. The booster jet mixing device for oil well pumps according to claim 2, characterized in that, The upper inner shell is connected to a collision component at its upper end.

9. An oil pump, comprising a fixed valve, characterized in that, The upper end of the fixed valve is connected to the oil well pump booster jet mixing device as described in claim 1.

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