Hydraulically-driven impact oscillation tool for well drilling acceleration

Abstract

The utility model discloses a hydraulic drive impact oscillation tool for well drilling speed increase, which comprises an oscillation assembly, a screw drill and a torsion impact assembly, an outer cylinder of the oscillation assembly is connected with the screw drill through threads, an internal anti-falling joint is in threaded connection with a stator, and a lower body outer sleeve of the torsion impact assembly is in threaded connection with a transmission shaft of the screw drill. The pressure and flow of drilling fluid are changed by periodically changing the overflowing area of the flow channel between the upper valve seat and the lower valve seat in the oscillation assembly, and the drilling fluid axially impacts the lower valve seat under different pressures and flows, so that the lower valve seat drives the anti-falling cap and the rotor to generate periodic oscillation axial force on a stratum, and the stratum is prevented from falling off. And meanwhile, drilling fluid passes through the torsion punching assembly, so that a lower inner sleeve in the torsion punching assembly circularly and repeatedly moves, and the torque of a lower drill bit is increased through continuous swinging of the lower inner sleeve. The tool has the functions of torsional impact, jarring, impacting and hydraulic pulse pressurization at the same time, can assist a drill bit in breaking rock, and greatly improves the drilling efficiency of the drill bit when the drill bit drills a hard stratum.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and natural gas drilling, in particular to a hydraulically driven impact vibration tool for increasing drilling speed. Background Art

[0002] With the continued development of offshore oil and gas fields, efforts to increase the exploitation of oil and gas resources are gradually being made to penetrate deeper, more challenging, and complex formations. However, the reservoir rock formations in deep formations are mostly composed of sandstone and granite, which have high compressive strength and poor drillability. This results in slow mechanical drilling speeds, thus extending the drilling cycle and increasing offshore drilling costs. In actual operations, we mainly face the following problems:

[0003] 1. With the increasing number of extended-reach wells, horizontal wells, multilateral wells, and wells with complex structures, wellbore depths and horizontal lengths are also increasing. This increases the friction experienced by the drill string during entry, leading to deflection and deformation of the drill string, making it difficult to successfully enter the planned well depth, seriously affecting drilling efficiency.

[0004] 2. The high frictional resistance between the drill string and the wellbore wall prevents the effective and timely application of the drilling pressure to the drill bit, and the pressure-support phenomenon becomes more serious. This causes a sharp drop in the drilling pressure on the drill bit, which in turn reduces the drilling speed, seriously restricting the drilling efficiency.

[0005] 3. During the drilling process of extended reach wells, PDC drill bits often experience stick-slip, which not only seriously affects the drilling efficiency in hard formation rocks, but also reduces the overall quality of the borehole.

[0006] Therefore, how to effectively offset the support pressure or friction during the drill string entering the well and improve the drill bit's rock breaking ability and drilling efficiency has become the key to developing oil and gas resources in medium-deep and complex and difficult-to-drill formations. Utility Model Content

[0007] The problem to be solved by the utility model is to provide a hydraulically driven impact oscillation tool for increasing drilling speed, so as to solve the problem of low drilling efficiency of screw drilling tools in the related art.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is: a hydraulically driven impact oscillation tool for drilling speed-up, comprising an oscillation assembly, a screw drill and a torsion impact assembly connected in sequence from top to bottom;

[0009] The oscillation assembly includes an anti-drop joint, wherein an upper valve seat and a lower valve seat are sequentially provided in the anti-drop joint from top to bottom, the upper valve seat is provided with a first drilling fluid flow channel, the first drilling fluid flow channel and the anti-drop joint are coaxial, the lower valve seat is provided with a second drilling fluid flow channel, the second drilling fluid flow channel and the anti-drop joint are not coaxial, and the lower valve seat rotates eccentrically relative to the upper valve seat, thereby periodically changing the flow area of drilling fluid passing through the first drilling fluid flow channel and the first drilling fluid flow channel;

[0010] The screw drill tool includes a stator and a rotor from the outside to the inside, the upper end of the stator is connected to the anti-drop joint, the lower end of the stator is connected to the lower body outer sleeve, the upper end of the rotor is connected to the lower valve seat, the lower end of the rotor is connected to the motor, and the rotor rotates eccentrically in the stator;

[0011] The torsion-stroke assembly includes a commutator, a circular hole is provided at the upper end of the commutator, the circular hole is connected to the central channel of the commutator, the lower end of the commutator is connected to a water nozzle, the water nozzle is connected to a water eye seat, a through hole is provided on the cylindrical surface of the water eye seat, the drilling fluid flows through the outer circumference of the commutator through the through hole, forming a low-pressure area outside the commutator, the central channel of the commutator is connected to the high-pressure area, and the pressure difference formed inside and outside the commutator causes the commutator to rotate from high pressure to low pressure.

[0012] Furthermore, the upper valve seat includes an upper joint, the upper end of the upper joint is a cylinder, the lower end of the upper joint is a frustum, the outer conical surface of the lower end of the upper joint is fixedly connected to the anti-drop joint, the lower end of the upper joint is threadedly connected to the anti-rotation cylinder, a channel is provided at the central axis of the upper joint, a static ring positioning cylinder is provided in the channel, a spring is provided on the outer cylindrical surface of the static ring positioning cylinder, the spring drives the static ring positioning cylinder to telescopic movement, the lower end of the static ring positioning cylinder is connected to the static ring, the first drilling fluid flow channel is provided at the central axis of the static ring, and the static ring positioning cylinder is connected to the through hole at the lower end of the anti-rotation cylinder.

[0013] Furthermore, a first spline is provided on the outer cylindrical surface of the lower end of the stationary ring positioning cylinder, and a second spline is provided on the inner side of the anti-rotation cylinder. The first spline cooperates with the second spline to realize the sliding of the stationary ring positioning cylinder. The diameter of the channel where the spring is located is larger than the diameter of the channel in the upper joint. An anti-fall step is provided at the lower end of the stationary ring positioning cylinder where the spring is sleeved, and a first sealing ring is provided on the inner side of the anti-rotation cylinder and the outer wall of the stationary ring positioning cylinder.

[0014] Furthermore, the lower valve seat includes an anti-drop cap, the upper end of the anti-drop cap is connected to the dynamic ring, the second drilling fluid flow channel is provided at the central axis of the dynamic ring, the dynamic ring is in contact with the static ring, the lower end of the anti-drop cap is connected to the upper end of the rotor, the upper end of the anti-drop cap is provided with a center hole connected to the second drilling fluid flow channel, the center hole is coaxial with the anti-drop cap, and the side wall of the anti-drop cap is provided with a bypass hole connected to the center hole.

[0015] Furthermore, the commutator is a stepped cylinder, the diameter of the upper part of the commutator is smaller than the diameter of the lower part of the commutator, the circular hole is placed on the upper part of the commutator, and two annular U-shaped ribs and two annular O-shaped ribs are respectively provided on the outer cylindrical surface of the lower part of the commutator. The two annular U-shaped ribs are symmetrically distributed with the central axis of the commutator as the center, and the two annular O-shaped ribs pass through the lower part of the commutator and are connected to each other. The adjacent annular U-shaped ribs are set at 90° to the adjacent annular O-shaped ribs. The outer boundary of the annular O-shaped rib and the outer boundary of the annular U-shaped rib constitute a flow channel for the flow of drilling fluid, and the ends of the two annular U-shaped grooves are provided with grooves for installing retaining rings.

[0016] Furthermore, a rotary hammer is provided on the outside of the commutator. The rotary hammer is a hollow cylinder. The inner diameter of the inner cylindrical surface of the rotary hammer is the same as the outer diameter of the annular U-shaped rib outside the commutator.

[0017] Furthermore, a lower body sleeve is provided on the outside of the rotary hammer, the lower body sleeve is a hollow cylinder, the lower end of the lower body sleeve is an external hexagonal bolt structure, the inner surface of the lower body sleeve is provided with a first step and a second step, the diameter of the first step is larger than the second step, the depth of the first step is smaller than the second step, the rotary hammer is placed in the first step, and the second step is threadedly connected to the water eye seat.

[0018] Furthermore, a lower body outer sleeve is provided on the outside of the lower body inner sleeve, and the lower body outer sleeve is a hollow cylinder. The outside of the lower body outer sleeve is a spiral structure identical to that of the centralizer, which plays a centralizing role. The lower end of the lower body outer sleeve is connected to the lower joint, and the lower end of the lower joint is provided with a thread for connecting the lower drilling tool. The lower joint is connected to the lower body outer sleeve through a limit block, and the lower joint rotates in the lower body outer sleeve. The upper end of the lower joint is an inner hexagonal structure, and the inner hexagonal structure is adapted to the outer hexagonal structure of the lower body sleeve to transmit torque.

[0019] Furthermore, the water eye seat is a hollow cylinder, the inner cylindrical surface of the water eye seat is provided with a step for installing the water eye, the outer cylindrical surface of the water eye seat is provided with a middle hole connected to the water eye, a second sealing ring is provided between the lower joint and the lower body outer sleeve, and a third sealing ring is provided between the lower body sleeve and the lower body outer sleeve.

[0020] Furthermore, an upper end cover is provided at the upper end of the lower body sleeve and the upper end of the rotary hammer. The upper end cover is a stepped hollow cylinder. A through hole is provided at the center of the upper end cover to expose the upper part of the commutator. Bearing steel balls are respectively provided at the contact points between the upper end cover and the lower body sleeve, the rotary hammer and the commutator.

[0021] The advantages and positive effects of the utility model are:

[0022] 1. This utility model uses various drilling fluids such as oil-based mud, emulsified mud and clay mud as the power fluid. When a sufficient amount of circulation passes through the tool, the internal motor rotates while outputting impact and vibration, so that the tool has torsion impact, shock, impact and hydraulic pulse pressurization functions at the same time, which can assist the drill bit in breaking rock and greatly improve the drilling efficiency of the drill bit in hard formations.

[0023] 2. The utility model incorporates an oscillating assembly. Drilling fluid flowing through the oscillating assembly periodically changes the flow area of the flow channel between the upper and lower valve seats, thereby varying the pressure and flow rate of the drilling fluid. Under varying pressures and flows, the drilling fluid axially impacts the lower valve seat, causing the lower valve seat to drive the anti-drop cap and rotor to generate periodic oscillating axial forces on the formation, offsetting support pressure and friction. During operation, the utility model simultaneously performs shock, impact, and hydraulic pulse pressurization functions, thereby changing the single rock-breaking method and effectively increasing the impact force of the drill bit, thereby improving the drilling speed and rock-breaking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0025] Figure 2 It is a partial enlarged view of the vibration assembly of the embodiment of the present utility model.

[0026] Figure 3 It is a partial enlarged view of the torsion punch assembly of the embodiment of the utility model.

[0027] Figure 4 It is a schematic diagram of the forward torsion of the internal structure of the torsion-stroke assembly of an embodiment of the present utility model.

[0028] Figure 5 It is a schematic diagram of the reverse torsion of the internal structure of the torsion punch assembly of an embodiment of the present utility model.

[0029] In the picture:

[0030] 1. Upper joint; 2. Anti-drop joint; 3. Static ring positioning cylinder;

[0031] 4. Spring; 5. Anti-rotation cylinder; 6. Stationary ring;

[0032] 7. Moving ring; 8. Anti-drop cap; 9. Stator;

[0033] 10. Rotor; 11. Oscillation assembly; 12. Screw drill;

[0034] 13. Torsion punch assembly; 14. Commutator; 15. Rotary hammer;

[0035] 16. Inner lower body cover; 17. Outer lower body cover; 18. Water nozzle;

[0036] 19. Water eye seat; 20. Upper end cover; 21. Lower joint;

[0037] 22. Bearing steel ball; 23. Retaining ring; 24. First sealing ring;

[0038] 25. Second sealing ring; 26. Third sealing ring; 27. High-pressure area;

[0039] 28. Low pressure area. DETAILED DESCRIPTION

[0040] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] The following is a further description of the embodiments of the present invention with reference to the accompanying drawings:

[0044] like Figure 1 As shown, an embodiment of the present application provides a hydraulically driven impact oscillation tool for accelerating drilling, comprising an oscillation assembly 11, a screw drill 12 and a torsion impact assembly 13 connected in sequence from top to bottom.

[0045] The oscillation assembly 11 includes a stopper 2, which is provided with an upper valve seat and a lower valve seat, arranged from top to bottom. The upper valve seat is provided with a first drilling fluid flow channel, which is coaxial with the stopper 2. The lower valve seat is provided with a second drilling fluid flow channel, which is non-coaxial with the stopper 2. The lower valve seat rotates eccentrically relative to the upper valve seat, thereby periodically changing the flow area of the drilling fluid passing through the first drilling fluid flow channel and the second drilling fluid flow channel, thereby changing the pressure and flow rate of the drilling fluid. Under different pressures and flows, the drilling fluid axially impacts the lower valve seat, causing the lower valve seat to drive the stopper cap 8 and the rotor 10 to generate a periodic oscillating axial force on the formation, offsetting the supporting pressure and friction.

[0046] The screw drill 12 includes a stator 9 and a rotor 10 from the outside to the inside. The upper end of the stator 9 is threadedly connected to the anti-drop joint 2, the lower end of the stator 9 is connected to the lower body outer sleeve 17, the upper end of the rotor 10 is connected to the lower valve seat, and the lower end of the rotor 10 is connected to the motor. The rotor 10 rotates eccentrically in the stator 9.

[0047] The torsion punch assembly 13 includes a commutator 14. A circular hole is provided at the upper end of the commutator 14, which is connected to the central channel of the commutator 14. The lower end of the commutator 14 is connected to a water nozzle 18, which is connected to a water eye seat 19. A through hole is provided on the cylindrical surface of the water eye seat 19. The drilling fluid flows through the outer circumference of the commutator 14 through the through hole, forming a low-pressure area 28 outside the commutator 14. The central channel of the commutator 14 is connected to the high-pressure area 27. The pressure difference formed inside and outside the commutator 14 causes the commutator 14 to rotate from high pressure to low pressure.

[0048] When this embodiment is working, it has the functions of shock, impact and hydraulic pulse pressurization, thereby changing the single rock breaking method, effectively improving the impact force of the drill bit, and further improving the drilling speed and rock breaking efficiency.

[0049] Preferably, Figure 2 As shown, the upper valve seat provided in this embodiment includes an upper joint 1, the upper end of the upper joint 1 is a cylinder, the lower end of the upper joint 1 is a frustum, the outer conical surface of the lower end of the upper joint 1 is fixedly connected to the anti-drop joint 2, the lower end of the upper joint 1 is threadedly connected to the anti-rotation cylinder 5, a channel is provided at the central axis of the upper joint 1, a static ring positioning cylinder 3 is provided in the channel, a spring 4 is provided on the outer cylindrical surface of the static ring positioning cylinder 3, the spring 4 drives the static ring positioning cylinder 3 to telescopic movement, the lower end of the static ring positioning cylinder 3 is connected to the static ring 6, the central axis of the static ring 6 is provided with the first drilling fluid flow channel, and the static ring positioning cylinder 3 is connected to the through hole at the lower end of the anti-rotation cylinder 5.

[0050] Preferably, a first spline is provided on the outer cylindrical surface of the lower end of the stationary ring positioning cylinder 3, and a second spline is provided on the inner side of the anti-rotation cylinder 5. The first spline cooperates with the second spline to realize the sliding of the stationary ring positioning cylinder 3. The diameter of the channel where the spring 4 is located is larger than the diameter of the channel in the upper joint 1. The stationary ring positioning cylinder 3 is provided with an anti-fall step at the lower end of the spring 4, and a first sealing ring 24 is provided on the inner side of the anti-rotation cylinder 5 and the outer wall of the stationary ring positioning cylinder 3.

[0051] like Figure 2 As shown, the lower valve seat includes an anti-drop cap 8, the upper end of the anti-drop cap 8 is connected to the dynamic ring 7, a second drilling fluid flow channel is provided at the central axis of the dynamic ring 7, the dynamic ring 7 is in contact with the static ring 6, the lower end of the anti-drop cap 8 is connected to the upper end of the rotor 10, and a center hole connected to the second drilling fluid flow channel is provided at the upper end of the anti-drop cap 8. The center hole is coaxial with the anti-drop cap 8, and a bypass hole connected to the center hole is provided on the side wall of the anti-drop cap 8.

[0052] When the high-pressure drilling fluid pumped out by the mud pump flows through the oscillation assembly 11 and the screw drill 12, the drilling fluid pushes the rotor 10 to rotate around the axis of the stator 9, and transmits the speed and torque to the lower valve seat through the anti-drop rod to rotate synchronously, so that the lower valve seat rotates eccentrically relative to the upper valve seat to periodically change the flow area of the flow channel. Due to the change in the flow area, the lower valve seat generates a downward thrust, which acts on the anti-drop rod through force transmission, thereby generating a hydraulic pulse.

[0053] This embodiment incorporates an oscillating assembly 11, which periodically varies the flow area between the upper valve seat, secured within the anti-drop joint 2, and the lower valve seat, attached to the anti-drop rod, thereby altering the pressure and flow of the drilling fluid. The drilling fluid, under varying pressures and flows, axially impacts the lower valve seat, causing it to drive the anti-drop rod and rotor 10 to generate a periodic oscillating axial force on the formation, counteracting support pressure and friction.

[0054] like Figure 1 As shown, the outer tube of the oscillation assembly 11 is connected to the screw drill 12 through a thread, the internal anti-drop joint 2 is threadedly connected to the stator 9, and the lower body outer sleeve 17 of the torsion punch assembly 13 is threadedly connected to the transmission shaft of the screw drill 12.

[0055] The drilling fluid passes through the oscillating assembly 11 and the screw drill 12 into the torsion and impact assembly 13. A water nozzle 18 is provided in the torsion and impact assembly 13. The drilling fluid flows through the water nozzle 18 to form a high-pressure area 27 and a low-pressure area 28 in the torsion and impact assembly 13.

[0056] like Figure 3As shown, the torsion punch assembly 13 includes a commutator 14, a rotary hammer 15, a lower body inner sleeve 16, and a lower body outer sleeve 17, which are connected in sequence from the inside to the outside. The upper ends of the commutator 14, rotary hammer 15, and lower body inner sleeve 16 are provided with an upper end cover 20. The contact points between the upper end cover 20, the lower body inner sleeve 16, the rotary hammer 15, and the commutator 14 are respectively provided with bearing steel balls 22. The lower end of the commutator 14 is provided with a water nozzle 18, and the lower end of the lower body inner sleeve 16 is provided with a water eye seat 19. Among them, the commutator 14, the rotary hammer 15, the lower body inner sleeve 16, the water eye seat 19, the water nozzle 18, and the upper end cover 20 are all located in the inner hole of the lower body outer sleeve 17. The rotary hammer 15 and the lower body sleeve 16 are assembled on the outside of the commutator 14 in sequence. The water eye installed inside the water eye seat 19 is assembled on the lower part of the commutator 14 and cooperates with the end face of the inner cavity of the lower body sleeve 16, and is fixed to the end face of the lower body sleeve 16 by a pin. The upper end cover 20 is located at the upper end of the commutator 14 and the rotary hammer 15.

[0057] Specifically, such as Figure 3 As shown, the commutator 14 is a stepped cylinder, and a step of a certain length is provided at the lower end of the inner cavity of the commutator 14 for cooperating with the water eye seat 19. The upper diameter of the commutator 14 is smaller than the lower diameter of the commutator 14. The circular hole is placed on the upper part of the commutator 14. Two annular U-shaped ribs and two annular O-shaped ribs are respectively provided on the outer cylindrical surface of the lower part of the commutator 14. The two annular U-shaped ribs are symmetrically distributed with the central axis of the commutator 14 as the center. The two annular O-shaped ribs pass through the lower part of the commutator 14 and are connected to each other. The adjacent annular U-shaped ribs are set at 90° to the adjacent annular O-shaped ribs. The outer boundary of the annular O-shaped rib and the outer boundary of the annular U-shaped rib constitute a flow channel for the flow of drilling fluid. The ends of the two annular U-shaped grooves are provided with grooves for installing the retaining ring 23.

[0058] A rotary hammer 15 is provided on the outside of the commutator 14. The rotary hammer 15 is a hollow cylinder. Two rectangular outer protrusions are provided on the outer cylindrical surface of the rotary hammer 15, symmetrically distributed about the center axis of the two rectangular outer protrusions. Two rectangular inner protrusions are provided on the inner cylindrical surface of the rotary hammer 15, symmetrically distributed about the center axis of the two rectangular inner protrusions. The length of the two rectangular inner protrusions is less than the axial length of the rotary hammer 15. Two straight slots are symmetrically provided between the rectangular outer protrusions and the rectangular inner protrusions, connecting the central hole of the rotary hammer 15 and the outside. An annular groove is provided on the upper end surface of the rotary hammer 15, and a fillet is provided on the step formed by the annular groove and the inner cylindrical surface of the rotary hammer 15. The fillet diameter is the same as the diameter of the mating bearing steel ball 22. The inner diameter of the inner circumferential surface is the same as the outer diameter of the annular U-shaped rib on the outer side of the commutator 14.

[0059] A lower body sleeve 16 is provided on the outside of the rotary hammer 15. The lower body sleeve 16 is a hollow cylinder with an external hexagonal bolt structure at its lower end. The inner surface of the lower body sleeve 16 is provided with a first step and a second step. The diameter of the first step is larger than that of the second step and the depth of the first step is smaller than that of the second step. The rotary hammer 15 is placed in the first step, and the second step is threadedly connected to the water eye seat 19. Two axially symmetrical rectangular grooves are formed in the interior of the lower body sleeve 16 along its axial direction. Two axially symmetrical semicircular grooves are provided in a direction perpendicular to the two rectangular grooves. The semicircular grooves connect to the hollow circular hole of the lower body sleeve 16. The exterior of the lower body sleeve 16 is recessed inward along its radial direction to form a groove structure of a certain length. A straight slot-shaped hole is provided in the middle of the groove structure to connect to the central hole.

[0060] A lower body outer sleeve 17 is provided on the outside of the lower body inner sleeve 16. The lower body outer sleeve 17 is a hollow cylinder. The outside of the lower body outer sleeve 17 is a spiral structure identical to that of the centralizer, which plays a centralizing role. The lower end of the lower body outer sleeve 17 is connected to the lower joint 21. The lower end of the lower joint 21 is provided with a thread for connecting the lower drill bit. The upper end of the lower joint 21 is provided with a groove. The lower joint 21 is connected to the lower body outer sleeve 17 by a limit block and is fixed to the groove of the lower joint 21 with screws. The lower joint 21 can rotate in the lower body outer sleeve 17. The upper end of the lower joint 21 is an inner hexagonal structure, which is adapted to the outer hexagonal structure of the lower body sleeve 16 to transmit torque.

[0061] The water eye seat 19 is a hollow cylinder. The inner cylindrical surface of the water eye seat 19 is provided with a step for installing the water eye. The outer cylindrical surface of the water eye seat 19 is provided with a middle hole connected to the water eye. A second sealing ring 25 is provided between the lower joint 21 and the lower body outer sleeve 17, and a third sealing ring 26 is provided between the lower body inner sleeve 16 and the lower body outer sleeve 17.

[0062] An upper end cover 20 is provided at the upper end of the lower body sleeve 16 and the upper end of the rotary hammer 15. The upper end cover 20 is a stepped hollow cylinder. The outer cylindrical surface of the upper end cover 20 is provided with a semicircular groove, which is connected to the semicircular groove of the lower body sleeve 16. A through hole is provided at the center of the upper end cover 20 to expose the upper part of the commutator 14. The contact points between the upper end cover 20 and the lower body sleeve 16, the rotary hammer 15 and the commutator 14 are respectively provided with bearing steel balls 22.

[0063] The working principle of this utility model is as follows:

[0064] When the high-pressure drilling fluid pumped out by the mud pump flows through the oscillation assembly 11 and enters the screw drill 12, the drilling fluid pushes the rotor 10 to rotate around the axis of the stator 9, and transmits the speed and torque to the lower valve seat through the anti-drop rod to rotate synchronously, so that the lower valve seat rotates eccentrically relative to the upper valve seat to periodically change the flow area of the flow channel. Due to the change in the flow area, the lower valve seat generates a downward thrust, which acts on the anti-drop rod through force transmission, thereby generating a hydraulic pulse.

[0065] The oscillating assembly 11 periodically changes the flow area between the upper valve seat, secured within the anti-drop joint 2, and the lower valve seat, attached to the anti-drop rod, thereby varying the pressure and flow of the drilling fluid. The axial impact of the drilling fluid on the lower valve seat at varying pressures and flows drives the anti-drop rod and rotor 10, generating a periodic oscillating axial force on the formation, counteracting the supporting pressure and friction.

[0066] like Figure 4 As shown, the drilling fluid flows through the outer circumference of the commutator 14 through the through holes on the outer circumference of the water hole seat 19, forming a low-pressure area 28 outside the commutator 14. The O-type through hole of the commutator 14 is connected to the high-pressure area 27. The resulting pressure difference causes the commutator 14 to rotate from high pressure to low pressure. The outer circumferential step of the commutator 14 contacts the rotary hammer 15. The rotary hammer 15 rotates under force until its outer circumferential step collides with the inner step of the lower body sleeve 16, forming a torsional impact. The rotary hammer 15 transmits the torque to the drill bit through the hexagonal structure at its end through the lower joint 21.

[0067] like Figure 5 As shown, similarly and in the opposite direction to the above, the outer circumference of the commutator 14 is connected to the circular hole in the water eye seat 19, forming a low-pressure area 28, while the hole in the commutator 14 is a high-pressure area 27. The commutator 14 moves in the opposite direction to the above and collides with the rotary hammer 15. The rotary hammer 15 collides with the lower body sleeve 16 and moves in the opposite direction, forming a reverse torque impact. The rotary hammer 15 transmits the torque to the drill bit through the hexagonal structure at its end through the lower joint 21; this cycle is repeated, and the torque of the lower drill bit is increased by the continuous swing of the lower body sleeve 16.

[0068] The advantages and positive effects of the utility model are:

[0069] 1. This utility model uses various drilling fluids such as oil-based mud, emulsified mud and clay mud as the power fluid. When a sufficient amount of circulation passes through the tool, the internal motor rotates while outputting impact and vibration, so that the tool has torsion impact, shock, impact and hydraulic pulse pressurization functions at the same time, which can assist the drill bit in breaking rock and greatly improve the drilling efficiency of the drill bit in hard formations.

[0070] 2. The utility model incorporates an oscillating assembly. Drilling fluid flowing through the oscillating assembly periodically changes the flow area of the flow channel between the upper and lower valve seats, thereby varying the pressure and flow rate of the drilling fluid. Under varying pressures and flows, the drilling fluid axially impacts the lower valve seat, causing the lower valve seat to drive the anti-drop cap and rotor to generate periodic oscillating axial forces on the formation, offsetting support pressure and friction. During operation, the utility model simultaneously performs shock, impact, and hydraulic pulse pressurization functions, thereby changing the single rock-breaking method and effectively increasing the impact force of the drill bit, thereby improving the drilling speed and rock-breaking efficiency.

[0071] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A hydraulically driven impact vibration tool for drilling speed-up, characterized in that: It includes an oscillation assembly, a screw drill and a torsion punch assembly connected in sequence from top to bottom; The oscillation assembly includes an anti-drop joint, wherein an upper valve seat and a lower valve seat are sequentially provided in the anti-drop joint from top to bottom, the upper valve seat is provided with a first drilling fluid flow channel, the first drilling fluid flow channel and the anti-drop joint are coaxial, the lower valve seat is provided with a second drilling fluid flow channel, the second drilling fluid flow channel and the anti-drop joint are not coaxial, and the lower valve seat rotates eccentrically relative to the upper valve seat, thereby periodically changing the flow area of drilling fluid passing through the first drilling fluid flow channel and the first drilling fluid flow channel; The screw drill tool includes a stator and a rotor from the outside to the inside, the upper end of the stator is connected to the anti-drop joint, the lower end of the stator is connected to the lower body outer sleeve, the upper end of the rotor is connected to the lower valve seat, the lower end of the rotor is connected to the motor, and the rotor rotates eccentrically in the stator; The torsion-stroke assembly includes a commutator, a circular hole is provided at the upper end of the commutator, the circular hole is connected to the central channel of the commutator, the lower end of the commutator is connected to a water nozzle, the water nozzle is connected to a water eye seat, a through hole is provided on the cylindrical surface of the water eye seat, the drilling fluid flows through the outer circumference of the commutator through the through hole, forming a low-pressure area outside the commutator, the central channel of the commutator is connected to the high-pressure area, and the pressure difference formed inside and outside the commutator causes the commutator to rotate from high pressure to low pressure.

2. A hydraulically driven impact vibration tool for drilling speed-up according to claim 1, characterized in that: The upper valve seat includes an upper joint, the upper end of the upper joint is a cylinder, the lower end of the upper joint is a frustum, the outer conical surface of the lower end of the upper joint is fixedly connected to the anti-drop joint, the lower end of the upper joint is threadedly connected to the anti-rotation cylinder, a channel is provided at the central axis of the upper joint, a static ring positioning cylinder is provided in the channel, a spring is provided on the outer cylindrical surface of the static ring positioning cylinder, the spring drives the static ring positioning cylinder to telescopic movement, the lower end of the static ring positioning cylinder is connected to the static ring, the first drilling fluid flow channel is provided at the central axis of the static ring, and the static ring positioning cylinder is connected to the through hole at the lower end of the anti-rotation cylinder.

3. A hydraulically driven impact vibration tool for drilling speed-up according to claim 2, characterized in that: A first spline is provided on the outer cylindrical surface of the lower end of the stationary ring positioning cylinder, and a second spline is provided on the inner side of the anti-rotation cylinder. The first spline cooperates with the second spline to realize the sliding of the stationary ring positioning cylinder. The diameter of the channel where the spring is located is larger than the diameter of the channel in the upper joint. An anti-fall step is provided at the lower end of the stationary ring positioning cylinder where the spring is sleeved. A first sealing ring is provided on the inner side of the anti-rotation cylinder and the outer wall of the stationary ring positioning cylinder.

4. A hydraulically driven impact vibration tool for drilling speed-up according to claim 2 or 3, characterized in that: The lower valve seat includes an anti-drop cap, the upper end of the anti-drop cap is connected to the dynamic ring, the second drilling fluid flow channel is provided at the central axis of the dynamic ring, the dynamic ring is in contact with the static ring, the lower end of the anti-drop cap is connected to the upper end of the rotor, the upper end of the anti-drop cap is provided with a center hole connected to the second drilling fluid flow channel, the center hole is coaxial with the anti-drop cap, and the side wall of the anti-drop cap is provided with a bypass hole connected to the center hole.

5. A hydraulically driven impact oscillation tool for drilling speed-up according to any one of claims 1 to 3, characterized in that: The commutator is a stepped cylinder, the diameter of the upper part of the commutator is smaller than the diameter of the lower part of the commutator, the circular hole is placed on the upper part of the commutator, and two annular U-shaped ribs and two annular O-shaped ribs are respectively provided on the outer cylindrical surface of the lower part of the commutator. The two annular U-shaped ribs are symmetrically distributed with the central axis of the commutator as the center, and the two annular O-shaped ribs pass through the lower part of the commutator and are connected to each other. The adjacent annular U-shaped ribs are arranged at 90° to the adjacent annular O-shaped ribs. The outer boundary of the annular O-shaped rib and the outer boundary of the annular U-shaped rib constitute a flow channel for the flow of drilling fluid. The ends of the two annular U-shaped grooves are provided with grooves for installing retaining rings.

6. A hydraulically driven impact vibration tool for drilling speed-up according to claim 5, characterized in that: A rotary hammer is provided on the outside of the commutator. The rotary hammer is a hollow cylinder. The inner diameter of the inner cylindrical surface of the rotary hammer is the same as the outer diameter of the annular U-shaped rib on the outside of the commutator.

7. A hydraulically driven impact oscillation tool for drilling speed-up according to claim 6, characterized in that: A lower body sleeve is provided on the outside of the rotary hammer, and the lower body sleeve is a hollow cylinder. The lower end of the lower body sleeve is an external hexagonal bolt structure. The inner surface of the lower body sleeve is provided with a first step and a second step. The diameter of the first step is larger than the second step, and the depth of the first step is smaller than the second step. The rotary hammer is placed in the first step, and the second step is threadedly connected to the water eye seat.

8. A hydraulically driven impact oscillation tool for drilling speed-up according to claim 7, characterized in that: A lower body outer sleeve is provided on the outside of the lower body inner sleeve, and the lower body outer sleeve is a hollow cylinder. The outside of the lower body outer sleeve is a spiral structure identical to that of the centralizer, which plays a centralizing role. The lower end of the lower body outer sleeve is connected to the lower joint, and the lower end of the lower joint is provided with a thread for connecting the lower drilling tool. The lower joint is connected to the lower body outer sleeve through a limit block, and the lower joint rotates in the lower body outer sleeve. The upper end of the lower joint is an inner hexagonal structure, and the inner hexagonal structure is adapted to the outer hexagonal structure of the lower body inner sleeve to transmit torque.

9. A hydraulically driven impact oscillation tool for drilling speed-up according to claim 8, characterized in that: The water eye seat is a hollow cylinder, the inner cylindrical surface of the water eye seat is provided with a step for installing the water eye, the outer cylindrical surface of the water eye seat is provided with a middle hole connected to the water eye, a second sealing ring is provided between the lower joint and the lower body outer sleeve, and a third sealing ring is provided between the lower body inner sleeve and the lower body outer sleeve.

10. The hydraulically driven impact vibration tool for drilling speed-up according to claim 8, characterized in that: An upper end cover is provided at the upper end of the lower body sleeve and the upper end of the rotary hammer. The upper end cover is a stepped hollow cylinder. A through hole is provided at the center of the upper end cover to expose the upper part of the commutator. Bearing steel balls are respectively provided at the contact points between the upper end cover and the lower body sleeve, the rotary hammer and the commutator.

Images