A pulsating impact rotary sizing and reshaping tool for casing deformation

Abstract

The present application relates to a kind of pulsating impact rotary shaping repair tools for casing deformation, belong to oil and gas exploitation drilling tool technical field, by the upper joint that can be clamped, main shell, compression cover, hexagonal head, stator compression cover, main shaft, flow valve, center tube, strike hammer, shaping head, anti-drop ring, lower joint, shaping bead, rubber head, spring pressure cap, spring, honeycomb coal ventilation valve, turbine, pressure cap, bearing, TC bearing composition.The pulsating impact rotary shaping repair tool for casing deformation disclosed in the application can convert static friction into dynamic friction, reduce shaping friction, while providing large shaping force in axial direction, to solve the purpose of high-grade casing shaping difficulty.

Description

Technical Field

[0001] This invention relates to the fields of petroleum and natural gas industry and mechanical engineering, and in particular to a pulsating impact rotational shaping and repair tool for casing deformation. Background Technology

[0002] On the one hand, to increase production, hydraulic fracturing is generally required when constructing wells in low-permeability oil and gas reservoirs. However, hydraulic fracturing is often accompanied by casing deformation, which prevents subsequent oil and gas production tools from being lowered, creating difficulties for the next stage of work. On the other hand, with the increasing occurrence of casing deformation in oil and gas wells, the repair of old wellbores has become an important research area. Currently, production casing communication chambers use 110, 125, and 140 grade casing. These types of casing have high strength and hardness, making them difficult for most reshaping tools to repair efficiently, causing significant challenges for oilfields.

[0003] Based on this, the present invention provides a pulsating impact rotational shaping and repair tool for casing deformation. It utilizes high-pressure fluid to drive the impact shaping head, transforming static friction into dynamic friction, reducing the shaping friction force, and simultaneously providing a large shaping force in the axial direction, thereby solving the problem of shaping high-grade steel casing. Summary of the Invention

[0004] The purpose of this invention is to propose a pulsating impact rotational shaping and repair tool for casing deformation, which transforms static friction into dynamic friction, reduces the shaping friction force, and provides a large shaping force in the axial direction, thereby solving the problem of shaping high-grade steel casing.

[0005] Therefore, the present invention provides a pulsating impact rotational shaping and repair tool for sleeve deformation, which consists of a clampable upper connector (1), a main shell (2), a clamping sleeve (3), a hexagonal head (4), a stator clamping sleeve (5), a main shaft (6), a distribution valve (7), a central tube (8), a hammer (9), a shaping head (10), an anti-drop ring (11), a lower connector (12), a shaping bead (13), a rubber head (14), a spring cap (15), a spring (16), a honeycomb briquette ventilation valve (17), a turbine (18), a cap (19), a bearing (20), and a TC bearing (21).

[0006] A pulsating impact rotational shaping and repair tool for casing deformation is characterized by: a clamping connector (1) that is connected to the main housing (2) by a thread, and a clamping sleeve (3) that is pressed and axially limited, a honeycomb briquette ventilation valve (17), the outer ring (1801) of the turbine (18), the outer ring (2001) of the bearing (20), a TC bearing (21), and a distribution valve (7).

[0007] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: the lower connector (12) is connected to the main housing (2) by a thread, and the shaping head (10) is axially limited by the anti-drop ring (11).

[0008] A pulsating impact rotational shaping and repair tool for casing deformation is characterized by: a rubber head (14) vulcanized on the spring cap (15), which, under the action of the spring (16), seals the inner hole (101) of the upper connector (1), and the rubber head (14) seals the channel when there is no high-pressure gas.

[0009] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: the spindle (6) is connected to the hexagonal head (4) and the central tube (8) respectively by threads; the hexagonal head (4) is in rotational contact with the rotating hole (1703) of the honeycomb briquette ventilation valve (17); and the hexagonal head (4) axially presses the inner ring (1802) of the turbine (18), the pressure cap (19), the inner ring (2002) of the bearing (20), and the TC bearing (21) in sequence.

[0010] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: the impact hammer (9) moves along the axis of the central tube (8); A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: the central tube (8) is connected to the shaping head (10) via a spline and transmits torque and rotation speed.

[0011] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: when the tool has not yet encountered the deformed casing during the well running process, the stop surface (1005) of the shaping head (10) is in contact with the lower stop point (1101) of the anti-drop ring (11).

[0012] The working principle is: High-pressure gas drives the turbine (18) to rotate through the inner hole (101) of the upper connector (1) and the axial air hole (1702). Then the gas passes through the through hole (501), the side flow hole (301), the air flow hole (701), the air hole (702), the impact air groove (905), the impact pressure chamber (22), the pressure relief hole (801), the center hole (803) in sequence, and finally exits through the air outlet (1003) and the lubrication air hole (1004). At this time, the shaping head (10) rotates without being impacted. When the tool encounters a deformed casing during the downhole process, the stop surface (1005) of the lower shaping head (10) is pushed out of contact with the lower stop point (1101) of the anti-drop ring (11) under the drilling pressure, and the gas-driven turbine (18) drives the central tube (8) and the shaping head (10) to rotate. In the first stage, the high-pressure gas passes through the air hole (702), the main spiral air groove (904), the air distribution chamber (24), the air groove (901), the secondary spiral air groove (902), and the lifting chamber (27) in sequence. At this time, the impact pressure chamber (22) is connected to the pressure relief hole (801) and is at low pressure. Under the action of pressure, the impact hammer (9) moves away from the shaping head (10). In the second stage, when the pressure relief hole (801) is completely blocked, part of the high-pressure gas passing through the air hole (702) is diverted through the main spiral air groove (904), the air inlet chamber (28), and the impact air groove (905) to reach the impact pressure chamber (22). At this time, the sealing surface (906) of the impact hammer (9) is in contact with the inner wall of the main shell (2) to achieve sealing, cut off the high-pressure gas (201) to decelerate, and the impact hammer (9) decelerates to zero until it reaches the top dead center (26). The gas in the lifting chamber (27) is discharged through the air outlet (1003) and the lubrication air hole (1004). In the third stage, the high-pressure gas in the impact pressure chamber (22) drives the impact hammer (9) to impact the shaping head (10). After the impact hammer (9) moves a certain distance, it impacts the pressure chamber (22) and connects to the pressure relief hole (801). The impact hammer (9) impacts the shaping head (10) according to inertia. The first, second and third stages are carried out in sequence, and the impact hammer (9) impacts the shaping head (10) in this cyclical manner.

[0013] A pulsating impact rotational shaping and repair tool for casing deformation is characterized in that: the shaping bead (13) rotates relative to the shaping head (10), transforming the static friction with the casing into dynamic friction.

[0014] A pulsating impact rotary shaping and repair tool for casing deformation is characterized by: a tool gas pressure of 0.1-5 MPa, a turbine (18) speed of 200-3000 rpm, and a torque of 2000-10000 Nm.

[0015] A pulsating impact rotational shaping and repair tool for casing deformation is characterized in that: the number of through holes (501) and side flow holes (301) is the same, ranging from 2 to 6, and the number of air flow holes (701) is also 2.

[0016] A pulsating impact rotational shaping and repair tool for casing deformation is characterized in that: the number of pressure relief holes (801) is 2-6, and the shape is circular, rectangular and elliptical.

[0017] A pulsating impact rotational shaping and repair tool for sleeve deformation is characterized in that: the airflow holes (701) are 6-10 in number and are circular, rectangular and elliptical in shape.

[0018] A pulsating impact rotational shaping and repair tool for sleeve deformation is characterized in that: the diameter of the air outlet (1003) is 3-20mm, and the diameter of the lubrication air outlet (1004) is 2-6mm.

[0019] A pulsating impact rotational shaping and repair tool for casing deformation is characterized in that the tool also operates under fluid drive.

[0020] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that the mass of the impact hammer (9) is 5-100 kg.

[0021] A pulsating impact rotational shaping and repair tool for sleeve deformation, characterized in that: the rubber head (14) is connected to the spring cap (15) by vulcanization, bonding and compression molding.

[0022] Compared with the prior art, the beneficial effects of this invention are: (1) The main structure of the present invention is simple and applicable to air and liquid; (2) This invention can provide greater impact force, reducing the difficulty of shaping; (3) The present invention has a high degree of compatibility with existing construction techniques and low usage costs; (4) This invention can convert static friction into dynamic friction. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a pulsating impact rotational shaping and repair tool for sleeve deformation according to the present invention; Figure 2 This is a diagram showing the state of a pulsating impact rotary shaping and repair tool for casing deformation during startup, as described in this invention. Figure 3 This is a schematic diagram of the upper stop point of a pulsating impact rotary shaping and repair tool for sleeve deformation according to the present invention. Figure 4 This is a three-dimensional cross-sectional view of the flow distribution valve of the present invention; Figure 5 This is a schematic diagram of a three-dimensional partial cross-sectional structure of the impact hammer of the present invention; Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the shaping head of the present invention; Figure 7 This is a three-dimensional cross-sectional view of the honeycomb briquette ventilation valve of the present invention; Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of the turbine of the present invention; Figure 9 This is a schematic diagram of the three-dimensional cross-sectional structure of the bearing of the present invention; In the diagram: 1. Clampable connector, 2. Main housing, 3. Clamping sleeve, 4. Hexagonal head, 5. Stator clamping sleeve, 6. Main shaft, 7. Distribution valve, 8. Central tube, 9. Impact hammer, 10. Shaping head, 11. Anti-drop ring, 12. Lower connector, 13. Shaping bead, 14. Rubber head, 15. Spring cap, 16. Spring, 17. Honeycomb briquette ventilation valve, 18. Turbine, 19. Cap, 20. Bearing, 21. TC bearing, 22. Impact pressure chamber, 23. Ventilation chamber, 24. Gas distribution chamber, 25. Exhaust chamber, 26. Top dead center, 27. Lifting chamber, 28. Inlet chamber, 101. Inner hole; 201. Inner wall, 301. Side flow hole, 501. Through hole, 701. Air flow hole, 702. Air hole, 703. Groove, 801. Pressure relief hole, 802. Exhaust hole, 803. Center hole, 901. Air groove, 902. Secondary spiral air groove, 903. Center hole, 904. Main spiral air groove, 905. Impact air groove, 906. Sealing surface, 1001. Impact surface, 1002. Spline, 1003. Air outlet, 1004. Lubrication air hole, 1005. Dead end surface, 1701. Spring mounting hole, 1702. Axial air hole, 1703. Rotation hole, 1801. Inner ring, 1802. Inner ring, 2001. Outer ring, 2002. Inner ring Detailed Implementation

[0024] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0025] The specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible variations based on the invention, all of which should be considered within the scope of the invention. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "linked" should be interpreted broadly; for example, they can refer to mechanical or electrical connections, or internal communication between two elements, and can be direct or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] See Figures 1 to 9 This invention provides a pulsating impact rotary shaping and repair tool for casing deformation, comprising an upper clamping connector 1, a main housing 2, a clamping sleeve 3, a hexagonal head 4, a stator clamping sleeve 5, a main shaft 6, a distribution valve 7, a central tube 8, a hammer 9, a shaping head 10, an anti-drop ring 11, a lower connector 12, a shaping bead 13, a rubber head 14, a spring cap 15, a spring 16, a honeycomb briquette ventilation valve 17, a turbine 18, a cap 19, a bearing 20, and a TC bearing 21.

[0029] A pulsating impact rotary shaping and repair tool for casing deformation is characterized by: a clamping connector 1 that is threadedly connected to the main housing 2, a clamping sleeve 3 that is pressed and axially limited, a honeycomb briquette ventilation valve 17, an outer ring 1801 of a turbine 18, an outer ring 2001 of a bearing 20, a TC bearing 21, and a distribution valve 7.

[0030] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: the lower connector 12 is connected to the main housing 2 by a thread, and the shaping head 10 is axially limited by the anti-drop ring 11.

[0031] A pulsating impact rotational shaping and repair tool for casing deformation is characterized by: a rubber head 14 vulcanized on the spring cap 15, which, under the action of the spring 16, seals the inner hole 101 of the upper connector 1; when there is no high-pressure gas, the rubber head 14 seals the channel.

[0032] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: the main shaft 6 is connected to the hexagonal head 4 and the central tube 8 by threads respectively; the hexagonal head 4 maintains rotational contact with the rotating hole 1703 of the honeycomb briquette ventilation valve 17; and the hexagonal head 4 axially presses the inner ring 1802 of the turbine 18, the pressure cap 19, the inner ring 2002 of the bearing 20, and the TC bearing 21 in sequence.

[0033] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: the impact hammer 9 moves along the axis of the central tube 8; A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: the central tube 8 is connected to the shaping head 10 via a spline and transmits torque and rotation speed.

[0034] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: when the tool has not yet encountered the deformed casing during the well running process, the stop surface 1005 of the shaping head 10 is in contact with the lower stop point 1101 of the anti-drop ring 11.

[0035] The working principle is: High-pressure gas drives the turbine 18 to rotate through the inner hole 101 of the upper connector 1 and the axial air hole 1702. Then the gas passes through the through hole 501, the side flow hole 301, the air flow hole 701, the air hole 702, the impact air groove 905, the impact pressure chamber 22, the pressure relief hole 801, and the center hole 803 in sequence. Finally, it is discharged through the air outlet 1003 and the lubrication air hole 1004. At this time, the shaping head 10 rotates idly without being impacted. When the tool encounters a deformed casing during the well running process, the stop surface 1005 of the lower shaping head 10 is pushed out of contact with the lower stop 1101 of the anti-drop ring 11 under the drilling pressure, and the gas-driven turbine 18 drives the central tube 8 and the shaping head 10 to rotate. In the first stage, the high-pressure gas passes through the air hole 702, the main spiral air groove 904, the air distribution chamber 24, the air groove 901, the auxiliary spiral air groove 902, and the lifting chamber 27 in sequence. At this time, the impact pressure chamber 22 is connected to the pressure relief hole 801 and is at low pressure. Under the action of pressure, the impact hammer 9 moves away from the shaping head 10. In the second stage, when the pressure relief hole 801 is completely blocked, part of the high-pressure gas passing through the air hole 702 is diverted through the main spiral air groove 904, the air inlet chamber 28, and the impact air groove 905 to reach the impact pressure chamber 22. At this time, the sealing surface 906 of the impact hammer 9 just contacts the inner wall of the main housing 2 to achieve sealing, cut off the high-pressure gas 201 to decelerate, and the impact hammer 9 decelerates to zero until it reaches the top dead center 26. The gas in the lifting chamber 27 is discharged through the air outlet 1003 and the lubrication air hole 1004. In the third stage, the high-pressure gas in the impact pressure chamber 22 drives the impact hammer 9 to impact the shaping head 10. After the impact hammer 9 moves a certain distance, it impacts the pressure chamber 22 and connects to the pressure relief hole 801. The impact hammer 9 impacts the shaping head 10 according to inertia. The first, second and third stages are carried out in sequence, and the impact hammer 9 impacts the shaping head 10 in this cyclical manner.

[0036] A pulsating impact rotary shaping and repair tool for sleeve deformation is characterized in that: the shaping bead 13 rotates relative to the shaping head 10, converting the static friction with the sleeve into dynamic friction.

[0037] A pulsating impact rotary shaping and repair tool for casing deformation is characterized by: a tool gas pressure of 0.1-5 MPa, a turbine speed of 200-3000 rpm, and a torque of 2000-10000 Nm.

[0038] A pulsating impact rotational shaping and repair tool for casing deformation is characterized in that: the number of through holes 501 and side flow holes 301 is the same, ranging from 2 to 6, and the number of air flow holes 701 is also specified.

[0039] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that: the number of pressure relief holes 801 is 2-6, and the shape is circular, rectangular and elliptical.

[0040] A pulsating impact rotational shaping and repair tool for sleeve deformation is characterized in that: the airflow holes 701 are 6-10 in number and are circular, rectangular, or elliptical in shape.

[0041] A pulsating impact rotational shaping and repair tool for sleeve deformation is characterized in that: the diameter of the vent hole 1003 is 3-20mm, and the diameter of the lubrication vent hole 1004 is 2-6mm.

[0042] A pulsating impact rotational shaping and repair tool for casing deformation is characterized in that the tool also operates under fluid drive.

[0043] A pulsating impact rotary shaping and repair tool for casing deformation is characterized in that the mass of the impact hammer 9 is 5-100 kg.

[0044] A pulsating impact rotational shaping and repair tool for sleeve deformation, characterized in that: the rubber head 14 is connected to the spring cap 15 by vulcanization, bonding, and compression molding.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the spirit and principles of the present invention. Any modifications, equivalent substitutions, improvements, etc., should be included within the scope of the present invention.

Claims

1. A pulsating impact rotary shaping and repair tool for casing deformation, comprising a clamping upper connector (1), a main housing (2), a clamping sleeve (3), a hexagonal head (4), a stator clamping sleeve (5), a main shaft (6), a distribution valve (7), a central tube (8), a hammer (9), a shaping head (10), an anti-drop ring (11), a lower connector (12), a shaping bead (13), a rubber head (14), a spring cap (15), a spring (16), a honeycomb briquette ventilation valve (17), a turbine (18), a cap (19), a bearing (20), and a TC bearing (21), characterized in that: The upper connector (1) is connected to the main housing (2) via a thread, and the clamping sleeve (3), honeycomb briquette ventilation valve (17), outer ring (1801) of turbine (18), outer ring (2001) of bearing (20), TC bearing (21), and distribution valve (7) are tightened and axially limited; the lower connector (12) is connected to the main housing (2) via a thread, and the shaping head (10) is axially limited by the anti-drop ring (11); the spring cap (15) has a rubber head (14), which seals the upper connector (1) under the action of the spring (16). The inner hole (101) of the main shaft (6) is connected to the hexagonal head (4) and the central tube (8) by threads respectively. The hexagonal head (4) maintains rotational contact with the rotating hole (1703) of the honeycomb briquette ventilation valve (17). The hexagonal head (4) axially presses the inner ring (1802) of the turbine (18), the pressure cap (19), the inner ring (2002) of the bearing (20), and the TC bearing (21) in sequence. The hammer (9) moves along the axis of the central tube (8). The central tube (8) is connected to the shaping head (10) by splines and transmits torque and speed. When the tool has not yet encountered the deformed casing during the downhole process, the stop face (1005) of the shaping head (10) is in contact with the lower stop (1101) of the anti-drop ring (11); the high pressure gas drives the turbine (18) to rotate through the inner hole (101) of the upper connector (1) and the axial air hole (1702). Then the gas passes through the through hole (501), the side flow hole (301), the air flow hole (701), the air hole (702), the impact air groove (905), the impact pressure chamber (22), the pressure relief hole (801), the center hole (803) in sequence, and finally exits through the air outlet (1003) and the lubrication air hole (1004). At this time, the shaping head (10) rotates without being impacted. When the tool encounters deformed casing during the downhole process, under drilling pressure, the stop face (1005) of the lower shaping head (10) is pushed out of contact with the lower stop (1101) of the anti-drop ring (11), and the gas-driven turbine (18) drives the central tube (8) and the shaping head (10) to rotate. In the first stage, the high-pressure gas passes through the gas hole (702), the main spiral gas groove (904), the gas distribution chamber (24), the gas groove (901), the auxiliary spiral gas groove (902), and the lifting chamber (27) in sequence. At this time, the impact pressure chamber (22) is connected to the pressure relief hole (801) and is at low pressure. Under the action of pressure, the impact hammer (9) moves away from the shaping head (10). In the second stage, when the pressure relief hole (801) is just completely blocked, part of the high-pressure gas passing through the gas hole (702) is diverted through the main spiral gas groove (904) and the air inlet chamber (28). The impact gas groove (905) reaches the impact pressure chamber (22). At this time, the sealing surface (906) of the impact hammer (9) just contacts the inner wall of the main shell (2) to achieve sealing, cut off the high pressure gas (201) to decelerate. The impact hammer (9) decelerates to zero and reaches the top dead center (26). The gas in the lifting chamber (27) is discharged through the air outlet (1003) and the lubrication air hole (1004). In the third stage, the high pressure gas in the impact pressure chamber (22) drives the impact hammer (9) to impact the shaping head (10). After the impact hammer (9) moves a distance, the impact pressure chamber (22) connects with the pressure relief hole (801). The impact hammer (9) impacts the shaping head (10) according to inertia. The first, second and third stages are carried out in sequence. The impact hammer (9) impacts the shaping head (10) in this way. The shaping bead (13) rotates relative to the shaping head (10), converting the static friction with the sleeve into dynamic friction.

2. A pulsating impact rotary shaping and repair tool for casing deformation, characterized in that: The tool gas pressure is 0.1-5MPa, the turbine (18) speed is 200-3000 rpm, and the torque is 2000-10000 Nm.

3. A pulsating impact rotary shaping and repair tool for casing deformation, characterized in that: The number of through holes (501) and side flow holes (301) is the same, ranging from 2 to 6, and the number of air flow holes (701) is the same.

4. A pulsating impact rotary shaping and repair tool for casing deformation, characterized in that: The number of pressure relief holes (801) is 2-6, and their shapes are circular, rectangular, and elliptical.

5. A pulsating impact rotary shaping and repair tool for casing deformation, characterized in that: The number of airflow holes (701) is 6-10, and their shapes are circular, rectangular, and elliptical.

6. A pulsating impact rotary shaping and repair tool for casing deformation, characterized in that: The diameter of the air outlet (1003) is 3-20 mm, and the diameter of the lubrication air outlet (1004) is 2-6 mm.

7. A pulsating impact rotary shaping and repair tool for casing deformation, characterized in that: The tool also operates under fluid actuation.

8. A pulsating impact rotary shaping and repair tool for casing deformation, characterized in that: The mass of the hammer (9) is 5-100 kg.

9. A pulsating impact rotary shaping and repair tool for casing deformation, characterized in that: The rubber head (14) is connected to the spring cap (15) by vulcanization, bonding and compression molding.

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