Adjustable oil pump unjamming device

Abstract

The adjustable oil pumping pump jamming device belongs to the technical field of jamming device of oil production engineering, and includes an upper joint, a power assembly upper cover, a power assembly, a first driven anvil, a second driven anvil, a first clamp, a second clamp, a working outer cylinder, a connecting rod, a differential pressure switch, a power assembly lower cover, a connecting sleeve, a lower anvil, an anvil adjusting cap, the upper joint is threadedly connected with the connecting sleeve through the working outer cylinder, the upper joint has a fifteenth through hole at the top, an outer thread is connected with one end of the working outer cylinder, and a circular recess for passing liquid is arranged in the upper joint, the power assembly is fixedly arranged in the working outer cylinder through a sealing groove, the upper end of the power assembly is fixedly provided with the power assembly upper cover, and the lower end of the power assembly upper cover is movably connected with the first driven anvil, the present application mainly completes vibration of a certain frequency and impact force through ground operation, vibration waves are transmitted to a pump piston through a pumping rod, pump jamming is removed, and well washing or repeated operation is avoided.

Description

Technical Field

[0001] This invention belongs to the technical field of unblocking devices in oil production engineering, and specifically relates to an adjustable oil pump unblocking device. Background Technology

[0002] Currently, the common method for unblocking stuck pumps in oil wells is well washing. However, due to low formation pressure, firstly, the well fluid suffers severe leakage during the washing process, contaminating the oil layer; secondly, the return flow rate of the washing fluid is small, failing to achieve the purpose of unblocking. Existing unblocking devices are low-frequency acoustic vibration unblocking and production enhancement equipment for oil wells. While their vibration frequency is adjustable, the impact force adjustment range is small, making it difficult to meet the needs of field applications. They can only remove primary wax and sand stuck pumps, and are ineffective in unblocking wells that have become severely stuck due to delayed detection. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes an adjustable oil pump unblocking device, comprising an upper connector, a power assembly upper pressure cap, a power assembly, a first driven anvil, a second driven anvil, a first clamp, a second clamp, a working outer cylinder, a connecting rod, a differential pressure switch, a power assembly lower pressure cap, a connecting sleeve, a lower anvil, and an anvil adjusting cap. The upper connector is threadedly connected to the connecting sleeve via the working outer cylinder. The top of the upper connector has a fifteenth through hole with an internal thread. The upper connector also has an external thread that connects to one end of the working outer cylinder. The upper connector has a circular groove inside for liquid passage. The power assembly is fixedly mounted inside the working outer cylinder via a sealing groove. The upper end of the assembly is fixedly equipped with a power assembly upper pressure cover. The lower end of the power assembly upper pressure cover is movably connected to the first driven anvil. The first driven anvil is threadedly connected to the second driven anvil through a connecting rod. The differential pressure switch is movably sleeved on the isolation section of the connecting rod. The lower pressure cover of the power assembly is fixedly equipped at the lower end of the power assembly. The lower pressure cover of the power assembly has a through diameter. The connecting rod is threadedly connected to the second driven anvil through one end of the through diameter. The anvil adjusting cap is threadedly connected to the connecting sleeve. The anvil adjusting cap has an internal thread. The lower anvil is threadedly connected to the internal thread. The second driven anvil is movably connected to the lower anvil. The first clamp and the second clamp are fixedly equipped on one side of the working outer cylinder. The first clamp and the second clamp are fixed on the polished rod and the wellhead component.

[0004] The beneficial effects of this invention are as follows: This invention primarily achieves vibration of a certain frequency and impact force through ground operation. The vibration wave is transmitted to the pump piston via the sucker rod, relieving pump jamming and eliminating the need for well cleaning or repeated operations. This invention mainly adjusts the vibration impact force by ground-based adjustments to liquid or gas discharge and pressure. The adjustable impact force has a wide range, and the range of pump jamming faults it can relieve is broad. This invention is applicable to oil pumps that have been producing wax and sand jamming for a long time. It is suitable for sand jamming after gas injection in heavy oil wells and for wells with faulty pump valves that are not tightly closed. Within a certain range, it can effectively solve the production problem of pump jamming, reduce the frequency of operations, and lower production costs, showing broad application prospects. Attached Figure Description

[0005] Figure 1 This is a schematic diagram of the adjustable oil pump unblocking device of the present invention;

[0006] The attached figures are labeled as follows:

[0007] 1. Upper connector; 2. Upper cover of powertrain; 3. Powertrain; 4. First driven anvil; 11. Second driven anvil; 5. First clamp; 9. Second clamp; 6. Outer working cylinder; 7. Connecting rod; 8. Differential pressure switch; 10. Lower cover of powertrain; 11. Driven anvil; 12. Connecting sleeve; 13. Lower anvil; 14. Anvil adjusting cap; 15. Fifteenth through hole; 16. Circular groove; 17. Seventeenth through hole; 18. Eighteenth through hole; 19. Nineteenth side hole; 20. 20th through hole, 21st through hole, 22nd through hole, 23rd channel, 24th side hole, 25th annular channel, 26th side channel, 27th through hole, 28th side channel, 29th side channel, 30th through hole, 31st through hole, 32nd axial through hole, 33rd through hole, 34th side channel, 35th block. Detailed Implementation

[0008] An adjustable oil pump unblocking device, such as Figure 1As shown, the assembly includes an upper connector 1, a powertrain upper pressure cover 2, a powertrain 3, a first driven anvil 4, a second driven anvil 11, a first clamp 5, a second clamp 9, a working outer cylinder 6, a connecting rod 7, a differential pressure switch 8, a powertrain lower pressure cover 10, a connecting sleeve 12, a lower anvil 13, and an anvil adjusting cap 14. The upper connector 1 is threadedly connected to the connecting sleeve 12 via the working outer cylinder 6. The top of the upper connector 1 has a fifteenth through hole 15 with an internal thread. The upper connector 1 also has an external thread that connects to one end of the working outer cylinder 6. The upper connector 1 has a circular groove 16 inside for liquid to pass through. The powertrain 3 is fixedly installed inside the working outer cylinder 6 via a sealing groove. The upper end of the powertrain 3 is fixedly mounted on the upper powertrain upper... The lower end of the pressure cap 2 of the power assembly is movably connected to the first driven anvil 4. The first driven anvil 4 is threadedly connected to the second driven anvil 11 through the connecting rod 7. The differential pressure switch 8 is movably sleeved on the isolation section of the connecting rod 7. The lower pressure cap 10 of the power assembly is fixedly installed at the lower end of the power assembly 3. The lower pressure cap 10 of the power assembly has a through diameter. The connecting rod 7 is threadedly connected to the second driven anvil 11 through one end of the through diameter. The anvil adjusting cap 14 is threadedly connected to the connecting sleeve 12. The anvil adjusting cap 14 has an internal thread. The lower anvil 13 is threadedly connected to the internal thread. The second driven anvil 11 is movably connected to the lower anvil 13. The first clamp 5 and the second clamp 9 are fixedly installed on one side of the working outer cylinder 6. The first clamp 5 and the second clamp 9 are fixed on the polished rod and the wellhead component.

[0009] The powertrain upper cover 2 is a three-stage stepped outer circle. The largest outer circle is fixed above the middle outer circle of the powertrain 3 through a sealing groove. The upper cover 2 of the powertrain is provided with a seventeenth through hole 17 parallel to the central axis. The seventeenth through hole 17 communicates with the circular groove 16.

[0010] The powertrain 3 is a stepped variable-diameter cylinder with a 23rd channel 23 concentrically arranged along the axial direction and centerline. The 23rd channel 23 is divided into four different diameter segments from top to bottom. The first and third segments have the same diameter from top to bottom. The second segment has a smaller diameter than the first segment, and the fourth segment has a larger diameter than the first segment. A 20th through hole 20 parallel to the axis is provided on one side of the 23rd channel 23, and an 18th through hole 18 parallel to the axis is provided on the other side of the 23rd channel 23. The 18th through hole 18 and the 20th through hole 20 are not connected, forming an isolation segment. A 19th side hole 19 is provided above the first segment of the inner wall of the 18th through hole 18, and a 26th side hole 26 is provided near the neck of the third segment. A 24th side hole 24 is provided on the side wall of the 20th through hole 20. The 19th side hole 19, the 24th side hole 24, and the 26th side hole 26 all penetrate the 23rd channel 23.

[0011] The first driven anvil 4 and the second driven anvil 11 are stepped outer diameter cylinders. The small diameter section of the cylinder of the first driven anvil 4 is provided with a twenty-first through hole 21, and the small diameter section of the cylinder of the second driven anvil 11 is provided with a thirty-third through hole 33. The twenty-first through hole 21 is connected to the twenty-second through hole 22 of the connecting rod 7, and the thirty-third through hole 33 is connected to the thirty-first through hole 31 of the connecting rod 7.

[0012] The connecting rod 7 has a 22nd through hole 22 and a 31st through hole 31 at both ends along the central axis. A 27th through hole 27 is provided at the root of the 22nd through hole 22, and a 30th through hole 30 is provided at the root of the 31st through hole 31.

[0013] The differential pressure switch 8 is provided with three sections of different outer diameters, with the upper section being smaller and the lower section being larger, and the middle section being smaller than the upper section. The central through hole of the differential pressure switch 8 is divided into two sections of different diameters, with the diameter of the upper central through hole of the differential pressure switch 8 being smaller than the diameter of the lower central through hole of the differential pressure switch 8.

[0014] The powertrain lower cover 10 is circular with a variable diameter, and a sealing section is provided at the neck. The lower cover 10 has a through diameter through which the connecting rod 7 passes. Several 32nd axial through holes 32 are evenly provided on the side wall.

[0015] The lower anvil 13 is a stepped cylinder with a larger top and a smaller bottom. A square block 35 is provided at the top of the lower anvil 13. The small-diameter cylinder is threaded, and the lower anvil 13 is connected to the internal thread of the anvil adjusting cap 14 through the thread.

[0016] The second reduced-diameter section of the powertrain 3 and the connecting rod 7 form the twenty-fifth annular channel 25. The third and fourth expanded-diameter sections of the powertrain 3 and the second section of the differential pressure switch 8 form the twenty-ninth annular channel 29. The twentieth through hole 20, the twenty-fourth side hole 24, the twenty-fifth annular channel 25, the twenty-sixth side hole 26, the eighteenth channel 18, and the nineteenth side hole 19 of the powertrain 3 form a through channel that opens downwards and closes upwards. The nineteenth side hole 19, the eighteenth channel 18, the twenty-sixth side hole 26, the twenty-ninth annular channel 29, the twenty-eighth side hole 28, the thirty-second through hole 32, and the thirty-fourth side hole 34 form a through channel that closes upwards and opens downwards.

[0017] Among them, the twentieth channel 20, the twenty-fourth side hole 24, the twenty-first side hole 21, the twenty-second channel 22, the twenty-seventh side hole 27, and the inner diameter expansion section of the differential pressure switch of the power assembly 3 form a through channel, and the thirtieth side hole 30, the thirty-first channel 31, the thirty-third side hole 33, and the thirty-fourth side hole 34 form a through channel.

[0018] The high-pressure medium passes through the fifteenth through hole 15 of the upper connector 1, the circular groove 16 of the upper connector 1, and further through the twentieth through hole 20, the twenty-fourth side hole 24, the twenty-fifth annular channel 25, the twenty-sixth side channel 26, the eighteenth through hole 18, and the nineteenth side hole 19 of the side channel of the power assembly 3, acting on the upper end face of the driven anvil 4. Simultaneously, the high-pressure medium passes through the fifteenth through hole 15 of the upper connector 1, the circular groove 16 of the upper connector 1, and further through the twentieth through hole 20 and the twenty-fourth side hole 24 of the side channel of the power assembly 3, acting on the lower end face of the driven anvil 4. Due to the difference in area between the upper and lower end faces, a downward thrust is generated, causing the driven anvil 4 to drive the connecting rod 7 and the driven anvil 11 downwards, further descending to the bottom dead center. At this time, the twenty-seventh through hole 27 of the connecting rod channel enters the lower sealing chamber of the differential pressure switch 8, and the thirtieth through hole 30 of the connecting rod channel passes over the lower pressure cover 10 of the power assembly. At this time, a high-pressure sealing chamber is formed in the lower cavity of the differential pressure switch 8.

[0019] Further high-pressure medium enters the lower sealing chamber of the differential pressure switch 8 through the fifteenth through hole 15 of the upper connector 1, the circular groove 16 of the upper connector 1, the twentieth through hole 20 of the power assembly 3, the twenty-fourth side hole 24, the twenty-first through hole 21 of the driven anvil 4, the twenty-second through hole 22 of the connecting rod 7, and the twenty-seventh through hole 27 of the liquid outlet. Simultaneously, the high-pressure medium enters the upper sealing chamber of the differential pressure switch 8 through the fifteenth through hole 15 of the upper connector 1, the circular groove 16 of the upper connector 1, the twentieth through hole 20 of the power assembly 3, and the twenty-fourth side hole 24. The lower chamber area of ​​the differential pressure switch is larger than the upper chamber area, causing the differential pressure switch to move upward and block the twenty-fifth annular channel 25 between the power assembly 3 and the connecting rod 7. At the same time, the driven anvil 11 strikes the lower anvil 13, generating a downward vibration. The high-pressure medium on the upper surface of the driven anvil 4 is discharged out of the outer working cylinder through the side channels of the power assembly 3, namely the nineteenth side hole 19, the eighteenth through hole 18, the twenty-sixth side channel 26, the twenty-ninth side channel 29, the twenty-eighth side channel 28, the thirty-second axial through hole 32, and the thirty-fourth side channel 34.

[0020] The differential pressure switch 8 is located at the top dead center. Under the action of the high-pressure medium, the differential pressure switch 8 generates an upward force, maintaining the top dead center position and blocking the annular channel 25 between the power assembly 3 and the connecting rod. The high-pressure medium passes through the fifteenth through hole 15 of the upper connector 1, the circular groove 16 of the upper connector 1, and further through the twentieth through hole 20 and the twenty-fourth side hole 24 of the side channel of the power assembly 3, acting on the lower end face of the driven anvil 4. This causes the driven anvil 4 to drive the connecting rod 7 and the driven anvil 11 to move upward to the top dead center and strike the pressure cover 2 of the power assembly, completing one upward vibration. At this time, the 27th through hole 27 on the connecting rod 7 returns to the upper sealing chamber of the differential pressure switch 8, and the 30th through hole 30 on the connecting rod 7 is located in the lower sealing chamber of the pressure control switch 8. Further, through the 31st through hole 31, the 30th through hole 30 at the bottom of the connecting rod 7, and the 33rd through hole 33 of the lower driven anvil 11, the high pressure in the lower sealing chamber of the pressure control switch 8 is released. Further, under the high pressure of the upper sealing chamber, the pressure control switch 8 begins to descend to the lower dead center, releasing the blockage of the annulus of the power assembly 3 and the connecting rod 7. Further, the high-pressure medium passes through the channel 15 of the upper connector 1, the groove 16 of the upper connector 1, and then sequentially through the 20th through hole 20, the 24th side hole 24, the 25th annular channel 25, the 26th side channel 26, the 18th through hole 18, and the 19th side hole 19 of the side channel of the power assembly 3, acting on the upper end face of the driven anvil 4, initiating the next downward movement and generating downward vibration.

[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adjustable oil pump unblocking device, characterized in that, The assembly includes an upper connector (1), a power assembly upper cover (2), a power assembly (3), a first driven anvil (4), a second driven anvil (11), a first clamp (5), a second clamp (9), a working outer cylinder (6), a connecting rod (7), a differential pressure switch (8), a power assembly lower cover (10), a connecting sleeve (12), a lower anvil (13), and an anvil adjusting cap (14). The upper connector (1) is threadedly connected to the connecting sleeve (12) through the working outer cylinder (6). The top of the upper connector (1) is provided with a fifteenth through hole (15), and an internal thread is provided at the fifteenth through hole (15). The upper connector (1) is provided with an external thread on the outside, and the external thread is connected to one end of the working outer cylinder (6). The upper connector (1) is provided with a circular groove (16) for liquid to pass through. The power assembly (3) is fixedly installed in the working outer cylinder (6) through a sealing groove. The upper end of the power assembly (3) is fixedly installed with a power supply. The upper pressure cover (2) of the power assembly is formed. The lower end of the upper pressure cover (2) of the power assembly is movably connected to the first driven anvil (4). The first driven anvil (4) is threadedly connected to the second driven anvil (11) through the connecting rod (7). The differential pressure switch (8) is movably sleeved on the isolation section of the connecting rod (7). The lower pressure cover (10) of the power assembly is fixedly set at the lower end of the power assembly (3). The lower pressure cover (10) of the power assembly has a through diameter. The connecting rod (7) passes through one end of the through diameter. The second driven anvil (11) is threadedly connected, the anvil adjusting cap (14) is threadedly connected to the connecting sleeve (12), the anvil adjusting cap (14) is provided with an internal thread, the lower anvil (13) is threadedly connected to the internal thread, the second driven anvil (11) is movably connected to the lower anvil (13), and the first clamp (5) and the second clamp (9) are fixedly installed on one side of the working outer cylinder (6), and the first clamp (5) and the second clamp (9) are fixed on the polished rod and the wellhead component; The powertrain (3) is a stepped variable-diameter cylinder. A 23rd channel (23) is provided concentrically with the center line along the axial direction. The 23rd channel (23) is divided into four different diameter segments from top to bottom. The diameter of the first segment and the third segment are the same from top to bottom. The diameter of the second segment is smaller than that of the first segment. The diameter of the fourth segment is larger than that of the first segment. A 20th through hole (20) parallel to the axis is provided on one side of the 23rd channel (23). An 18th through hole (18) parallel to the axis is provided on the other side of the 23rd channel (23). The 18th through hole (18) and the 20th through hole (20) are not connected and form an isolation segment. A 19th side hole (19) is provided above the first segment of the inner wall of the 18th through hole (18). A 26th side hole (26) is provided near the neck of the third segment. A 24th side hole (24) is provided on the side wall of the 20th through hole (20). The 19th side hole (19), the 24th side hole (24), and the 26th side hole (26) all penetrate the 23rd channel (23). The differential pressure switch (8) is configured with three sections of different outer diameters, with the upper section being smaller than the lower section and the middle section being smaller than the upper section. The central through hole of the differential pressure switch (8) is divided into two sections of different diameters, with the diameter of the upper central through hole of the differential pressure switch (8) being smaller than the diameter of the lower central through hole of the differential pressure switch (8). The second section of the powertrain (3) with the connecting rod (7) forms the twenty-fifth annular channel (25). The third and fourth sections of the powertrain (3) with the second section of the differential pressure switch (8) form the twenty-ninth annular channel (29). The twentieth through hole (20), the twenty-fourth side hole (24), the twenty-fifth annular channel (25), the twenty-sixth side hole (26), the eighteenth through hole (18), and the nineteenth side hole (19) of the powertrain (3) form a through channel that opens downwards and closes upwards. The nineteenth side hole (19), the eighteenth through hole (18), the twenty-sixth side hole (26), the twenty-ninth annular channel (29), the twenty-eighth side hole (28), the thirty-second axial through hole (32), and the thirty-fourth side hole (34) form a through channel that closes upwards and opens downwards.

2. The adjustable oil pump unblocking device according to claim 1, characterized in that, The upper cover (2) of the powertrain is a three-stage stepped outer circle. The largest outer circle is fixed above the middle outer circle of the powertrain (3) through a sealing groove. The upper cover (2) of the powertrain is provided with a seventeenth through hole (17) parallel to the central axis. The seventeenth through hole (17) communicates with the circular groove (16).

3. The adjustable oil pump unblocking device according to claim 1, characterized in that, The first driven anvil (4) and the second driven anvil (11) are stepped outer diameter cylinders. The small diameter section of the cylinder of the first driven anvil (4) is provided with a twenty-first through hole (21), and the small diameter section of the cylinder of the second driven anvil (11) is provided with a thirty-third through hole (33). The twenty-first through hole (21) is connected to the twenty-second through hole (22) of the connecting rod (7), and the thirty-third through hole (33) is connected to the thirty-first through hole (31) of the connecting rod (7).

4. The adjustable oil pump unblocking device according to claim 1, characterized in that, The connecting rod (7) has a 22nd through hole (22) and a 31st through hole (31) respectively at both ends in the direction of the central axis. A radial through hole (27) is provided at the root of the 22nd through hole (22), and a radial through hole (30) is provided at the root of the 31st through hole (31).

5. The adjustable oil pump unblocking device according to claim 1, characterized in that, The powertrain lower cover (10) is shaped as a variable diameter cylinder with a sealing section at the neck. The powertrain lower cover (10) has a through diameter inside, through which the connecting rod (7) passes. Several 32nd axial through holes (32) are evenly arranged on the side wall.

6. The adjustable oil pump unblocking device according to claim 1, characterized in that, The lower anvil (13) is a stepped cylinder with a larger top and a smaller bottom. A square (35) is set at the top of the lower anvil (13). The small-diameter cylinder is threaded. The lower anvil (13) is connected to the internal thread of the anvil adjusting cap (14) through the thread.

7. The adjustable oil pump unblocking device according to claim 1, characterized in that, The 20th through hole (20), 24th side hole (24), 21st through hole (21), 22nd through hole (22), 27th through hole (27) of the power assembly (3) and the inner expansion section of the differential pressure switch form a through channel, and the 30th through hole (30), 31st through hole (31), 33rd through hole (33), and 34th side hole (34) form a through channel.

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