All-metal hydraulic oscillation impactor

Abstract

The utility model discloses an all-metal hydraulic oscillation impactor which comprises a transmission shaft, a transmission sleeve, a spring, a balance sliding sleeve, an outer sleeve, a shaft clamp, a pressing head, a metal sealing ring, a water hammer unit and a lower connector. The method has the effects of high temperature resistance and wear resistance; vibration is reduced through vibration, vibration is prevented through vibration, vibration is stabilized through vibration, random vibration of the drilling tool is restrained, and the working condition of the drilling tool is stabilized; (3) the spring benefit of the drilling tool is reduced by coupling oscillation and impact, and a static drilling tool with stored energy to be emitted is changed into a dynamic drilling tool with instant emission, so that the deformation of the drilling tool is reduced, and the control of a tool surface is strengthened; (4) sliding friction in directional drilling is changed into vibration friction, so that the supporting pressure phenomenon of a drill column is reduced; service life of the drill is prolonged, drilling footage of the drill is increased, and drilling speed is increased. Although the all-metal hydraulic oscillation impactor is complex in structure and high in cost, the all-metal hydraulic oscillation impactor can better meet actual requirements, and is huge in economic benefit and social benefit, high in cost performance and worthy of popularization and application.

Description

Technical Field

[0001] The present invention relates to a drilling speed-up tool in oil and gas exploration and development, specifically a full-well section anti-pressure drilling tool, which improves the pressure-supporting working conditions of long well sections and complex well sections, especially improves the working conditions of downhole power combination drilling tools. It belongs to the technical field of drilling exploration and exploitation. Background Art

[0002] The exploration and development of oil, gas and water (including brine) resources requires extended reach wells and horizontal well drilling technologies. However, the timeliness of drilling pressure transmission and the timeliness of directional drilling are limited due to the large friction between the drill bit and the formation. The most direct phenomenon is the borehole pressure, which causes the drill bit to be depressurized. Especially during the sliding drilling process of the downhole power combination drill bit, the borehole pressure causes the downhole power drill bit to be unable to slide and transmit drilling pressure and torque, and the drill bit idles due to depressurization. Both the sliding drilling method and the rotary drilling method are restricted by the borehole pressure to varying degrees, which reduces the drilling timeliness and increases the drilling cost. Theoretical research and practical application show that a drilling tool assembly with a hydraulic oscillator or hydraulic impactor can reduce the borehole support pressure, improve the timeliness and accuracy of drilling parameters, improve the stability of the drill string, improve the mechanical drilling speed, improve the service life and drilling footage of the drill bit, and improve the quality of the wellbore. It has a positive effect on improving the comprehensive benefits of drilling and has achieved remarkable results. However, it cannot be used normally in deep wells and wells with abnormal geothermal temperatures. The reason is that the rubber material in the existing hydraulic oscillator has poor temperature resistance and wear resistance, and has a short effective life. Summary of the invention

[0003] The object of the present invention is to solve one of the technical drawbacks.

[0004] To this end, the present invention proposes an all-metal hydraulic oscillation impactor, which has the following functions: ① high temperature resistance, wear resistance, and long service life; ② the hydraulic impact oscillation and the impact vibrate at the same frequency to achieve vibration reduction, vibration prevention, and vibration stabilization, thereby suppressing the random vibration of the drill tool, preventing and reducing the drill tool bouncing, and stabilizing the working condition of the drill tool; ③ the coupling of hydraulic impact oscillation and impact reduces the "spring effect" of the drill tool, and changes the "energy storage and ready" static drill tool into a "trigger-ready" dynamic drill tool, thereby reducing the energy storage and ready-to-fire potential of the drill tool, reducing the deformation of the drill tool, and strengthening the tool face control; ④ changing the sliding friction in directional drilling into vibration friction, reducing the drill string support pressure phenomenon, and improving the transmission method of drilling pressure during sliding drilling; ⑤ extending the service life of the drill bit, increasing the drill bit footage, and improving the drilling speed, thereby solving the problems mentioned in the background technology.

[0005] In order to achieve the above-mentioned purpose, the technical solution disclosed and protected by the utility model is: an all-metal hydraulic oscillation impactor, comprising: (1) a transmission shaft, (2) a transmission sleeve, (3) a spring, (4) a balancing sleeve, (5) an outer sleeve, (6) a shaft clamp, (7) a pressure head, (8) a metal sealing ring, (9) a water hammer unit, and (10) a lower joint. Its characteristics are: one end of the transmission shaft (1) is connected to the drilling tool, and the other end is connected to the pressure head (7), and the middle part is equipped with a transmission sleeve (2), a spring (3), a balancing sleeve (4), a shaft clamp (6), and a metal sealing ring (8); one end of the transmission sleeve (2) is sealed and assembled on the transmission shaft (1), and the other end is connected to the outer sleeve (5) through a thread, and the interior thereof is equipped with the transmission shaft (1) through an inner square or a spline; both ends of the outer sleeve (5) are drill rod buckles, one end is connected to the transmission sleeve (2), and the other end is connected to the lower joint (10), and the spring (3), the balancing sleeve (4), the shaft clamp (6), the pressure head ( 7), a metal sealing ring (8) and a water hammer unit (9); the shaft clamp (6) is installed on the transmission shaft (1), is limited and constrained by the transmission sleeve (2), and is stopped by the spring (3); one end of the pressure head (7) is connected to the transmission shaft (1) and the limit spring (3) through a sealing thread, and the other end is installed with a balancing sleeve (4); the metal sealing ring (8) is respectively installed in the sealing grooves of the relevant sealing surfaces of the transmission sleeve (2) and the balancing sleeve (4); both ends of the lower joint (10) are drill rod buckles, one end is connected to the outer sleeve (5), and the center of the end is restricted and connected to the water hammer unit (9), and the other end is connected to the drilling tool.

[0006] The transmission shaft (1) comprises: (11) a large end thread, (12) a shaft sealing surface, (13) a middle outer square or spline, (14) an end shaft groove, (15) a central pipe, and (16) a small end sealing buckle; the characteristic is that the large end thread (11), the shaft sealing surface (12), the middle outer square (13), the end shaft groove (14), the central pipe (15), and the small end sealing buckle (16) are all arranged on the same shaft.

[0007] The transmission sleeve (2) comprises (17) a sealing groove, (18) a sealing surface, (19) a storage, (20) a thread, and (21) an inner square or a spline; the characteristic is that the sealing groove (17), the sealing surface (18), the storage (19), the thread (20), the inner square or the spline (21) are all arranged in the transmission sleeve.

[0008] The water hammer unit (9) comprises: (22) a spiral body, (23) a center sliding cover, (24) a bearing sleeve, (25) a pressure plate, (26) a center pressure plate, (27) a pressure plate support, (28) a bearing, (29) a bearing ring, and (30) an upper bearing; the characteristics are as follows: the spiral body (22), the center sliding cover (23), the pressure plate (25), the center pressure plate (26), the pressure plate support (27), the bearing (28), the bearing ring (29), and the upper bearing (30) are assembled and installed in the bearing sleeve (24); one end face of the center sliding cover (23) is matched with the end face of the bearing sleeve (24), and the other end face is matched with the spiral body (22) through the upper bearing (30); One end face of the spiral body (22) cooperates with the central sliding cover (23) through the upper bearing (30) and the bearing sleeve (24), and the other end face cooperates with the central pressure plate (26) through the bearing ring (29) and the pressure starter plate (25), and the middle part cooperates with the bearing sleeve (24) through the bearing (28); the pressure starter plate (25) is installed in the central pressure plate (26), one end face cooperates with one end face of the spiral body (22), and the other end face cooperates with the pressure plate support (27); one end face of the central pressure plate (26) cooperates with the spiral body (22) through the bearing ring (29) and the bearing sleeve (24), and the other end face cooperates with the pressure plate support (27).

[0009] The spiral body (22) comprises: (31) a spiral body, (32) an upper flange, (33) an upper concave ring, (34) a spiral cone hole, (35) a central circular hole, (36) an eccentric elliptical hole, (37) a straightening sleeve, (38) a lower concave ring, (39) an upper chip removal ring, (40) a lower chip removal ring, (41) a chip removal hole, and (42) an overflow chamber; wherein the spiral body (31) is a cylinder, one end of which is provided with an upper flange (32), an upper concave ring (33), and a central circular hole (35), and the other end of which is provided with an eccentric elliptical hole (36), a lower concave ring (38), and an overflow chamber (42); the straightening sleeve (37), the upper chip removal ring (40) and the lower chip removal ring (41) are provided with a central circular hole (35); A chip ring (39), a lower chip removal ring (40), and a chip removal hole (41) are arranged on the cylindrical surface of the spiral body (31); the spiral tapered hole (34) passes through both ends of the spiral body (31), respectively connecting the central circular hole (35) and the eccentric elliptical hole (36), and spirally transitions from the central circular hole (35) on one end face to the eccentric elliptical hole (36) on the other end face, with a spiral angle of 0-360° and a cone angle of 0-90°; the overflow chamber (42) is a semicircular or polygonal trapezoidal chamber, which is semicircularly distributed on one end face of the spiral body (31), symmetrically arranged with the eccentric elliptical hole (36), and a lower concave ring (38) is arranged on its outer side.

[0010] The pressure-opening plate (25) comprises: (43) a plate body, (44) a through hole, and (45) an edge. The characteristic of the plate body (43) is that it is a polygon, two symmetrically distributed through holes (44) are arranged on its end surface, and edges (45) are arranged on its periphery.

[0011] Furthermore, the middle outer side (13) of the transmission shaft (1) is a spline.

[0012] Furthermore, the transmission shaft (1) can be a two-body structure, that is, the large end drill pipe buckle (11), the shaft sealing surface (12), the middle outer square (13), the end shaft groove (14) and the central pipe (15), and the small end sealing buckle (16) of the transmission shaft (1) are threadedly connected.

[0013] Furthermore, the outer sleeve (5) and the lower joint (10) of the all-metal hydraulic oscillation impactor are integrally formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 The present invention discloses a structural schematic diagram of a full-metal hydraulic oscillation impactor.

[0015] Attached Figure 2 It is a schematic structural diagram of the transmission shaft (1) described in the present invention.

[0016] Attached Figure 3 It is a schematic structural diagram of the water hammer unit (9) described in the present invention.

[0017] Attached Figure 4A It is a schematic diagram of the structure of one end of the spiral body (22) described in the present invention.

[0018] Attached Figure 4B It is a schematic diagram of the structure of one end of the spiral body (22) described in the present invention. DETAILED DESCRIPTION

[0019] Example 1

[0020] As attached Figure 1 As shown, the all-metal hydraulic oscillation impactor comprises: (1) a transmission shaft, (2) a transmission sleeve, (3) a spring, (4) a balancing sleeve, (5) an outer sleeve, (6) a shaft clamp, (7) a pressure head, (8) a metal sealing ring, (9) a water hammer unit, and (10) a lower joint.

[0021] As attached Figure 2 As shown, the transmission shaft (1) comprises: (11) a large end drill pipe buckle, (12) a shaft sealing surface, (13) a middle outer square or spline, (14) an end shaft groove, (15) a center pipe, and (16) a small end sealing buckle.

[0022] As attached Figure 3As shown, the water hammer unit (9) includes: (22) a spiral body, (23) a center sliding cover, (24) a bearing sleeve, (25) a pressure plate, (26) a center pressure plate, (27) a pressure plate support, (28) a bearing, (29) a bearing ring, and (30) an upper bearing.

[0023] As shown in FIG. 4 , the spiral body (22) includes: (31) a spiral body, (32) an upper flange, (33) an upper concave ring, (34) a spiral tapered hole, (35) a central circular hole, (36) an eccentric elliptical hole, (37) a straightening sleeve, (38) a lower concave ring, (39) an upper chip removal ring, (40) a lower chip removal ring, (41) a chip removal hole, and (42) an overflow chamber.

[0024] Example 2

[0025] The drilling fluid flows into the outer casing (5) through the central pipe (15) of the transmission shaft (1), driving the water hammer unit (9) to rotate; when the eccentric elliptical hole (36) of the spiral body (22) faces the through hole (44) of the pressure-opening plate (25), the pressure-opening plate (25) is closed, and the drilling fluid flows into the lower joint (10); when the eccentric elliptical hole (36) of the spiral body (22) does not face the through hole (44) of the pressure-opening plate (25), the pressure-opening plate (25) is opened, and the drilling fluid is interrupted in the outer casing (5), and the pressure increases sharply to form a pressure-opening plate. The water hammer drives the balance sleeve (4) and the pressure head (7) to compress the spring (3), so that the transmission shaft (1) and the transmission sleeve (2) produce relative oscillating displacement, and the sliding friction between the drilling tool and the well wall above the all-metal hydraulic oscillating impactor is converted into vibration friction, thereby reducing friction and reducing the supporting pressure; at the same time, the overflow chamber (42) is opened, and the drilling fluid below the pressure plate (25) forms a low pressure due to flow inertia, sucking the slag liquid in the upper chip removal ring (39), the lower chip removal ring (40), the chip removal hole (41) and the overflow chamber (42). When the eccentric elliptical hole (36) of the spiral body (22) faces the through hole (44) of the pressure-starting plate (25), the pressure-starting plate (25) is closed, and the drilling fluid pressure in the outer sleeve (5) drops sharply. Under the action of the restoring force of the spring (3) and the drilling pressure, the transmission shaft (1) and the transmission sleeve (2) produce impact, driving the drilling tool adjacent to the lower joint (10) to oscillate and displace, and the sliding friction between the drilling tool and the well wall below the all-metal hydraulic oscillation impactor is converted into vibration friction, thereby reducing friction resistance and reducing support pressure; the water hammer unit (9) rotates one circle, and the pressure-starting plate (25) is alternately opened and closed twice, generating water hammer oscillation displacement and impact twice; the water hammer unit (9) rotates at a high speed, and the pressure-starting plate (25) induces high-frequency oscillation and impact; as the high-frequency vibration propagates and superimposes in the drilling tool, the sliding friction between the drilling tool and the well wall is converted into vibration friction, thereby reducing friction resistance and reducing support pressure, and at the same time inducing drilling fluid jet pulsation and resonance.

[0026] The beneficial effects of the present invention are:

[0027] 1. The all-metal hydraulic oscillating impactor produces an impact effect while producing an oscillating effect, which is one of the significant features of the present invention that distinguishes it from other hydraulic oscillators.

[0028] 2. The high temperature resistance of the all-metal hydraulic oscillation impactor is the most significant feature of the present invention.

[0029] 3. The all-metal hydraulic oscillation impactor not only generates oscillation impact, but also triggers drilling fluid jet pulsation, which is coupled with the drilling tool oscillation, which not only strengthens the action force, but also extends the action length.

[0030] Practice has proved that the all-metal hydraulic oscillation impactor can not only increase the drilling speed, but also increase the drill bit footage and extend the drill bit life. It also has the synergistic effect of stabilizing the drilling tool working conditions and reducing the support pressure. It has huge economic and social benefits and a high cost-effectiveness, and is worthy of promotion and use.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. A full metal hydraulic oscillation impactor, include: Transmission shaft, transmission sleeve, spring, balancing sleeve, outer sleeve, shaft clamp, pressure head, metal sealing ring, water hammer unit, lower joint; its characteristics are: one end of the transmission shaft is connected to the drilling tool, and the other end is connected to the pressure head, and the middle part is equipped with a transmission sleeve, spring, balancing sleeve, shaft clamp, and metal sealing ring; one end of the transmission sleeve is sealed and assembled on the transmission shaft, and the other end is connected to the outer sleeve through a thread, and its interior is equipped with the transmission shaft through an inner square or a spline; both ends of the outer sleeve are threads, one end is connected to the transmission sleeve, and the other end is a lower joint or connected to the lower joint, and a spring, balancing sleeve, shaft clamp, pressure head, metal sealing ring and water hammer unit are installed inside; the shaft clamp is installed on the transmission shaft, and is limited by the transmission sleeve and stops at the spring; one end of the pressure head is connected to the transmission shaft and the limiting spring through a sealing thread, and a balancing sleeve is installed on the other end; the metal sealing rings are respectively installed in the sealing grooves of the relevant sealing surfaces of the transmission sleeve and the balancing sleeve; the lower joint One end is connected to the outer sleeve, and the center of the end is connected to the water hammer unit, and the other end is connected to the drilling tool; the water hammer unit includes: a spiral body, a central sliding cover, a bearing sleeve, a pressure plate, a central pressure plate, a pressure plate support, a bearing, a bearing ring, and an upper bearing; its characteristics are: the spiral body, the central sliding cover, the pressure plate, the central pressure plate, the pressure plate support, the bearing, the bearing ring, and the upper bearing are assembled in the bearing sleeve; one end face of the spiral body is matched with the central sliding cover through the upper bearing and the bearing sleeve, and the other end face is matched with the central pressure plate through the bearing ring and the pressure plate, and the middle part is matched with the bearing sleeve through the bearing; one end face of the central sliding cover is matched with the end face of the bearing sleeve, and the other end face is matched with the spiral body through the upper bearing; the pressure plate is installed in the central pressure plate, one end face is matched with the end face of the spiral body, and the other end face is matched with the pressure plate support; one end face of the central pressure plate is matched with the spiral body through the bearing ring and the bearing sleeve, and the other end face is matched with the pressure plate support.

2. The all-metal hydraulic oscillating impactor according to claim 1, Its characteristics are: The transmission shaft comprises: a large end thread, a shaft sealing surface, a middle outer square or spline, an end shaft groove, a central pipe, and a small end sealing buckle; its characteristic is that: the large end thread, the shaft sealing surface, the middle outer square or spline, the end shaft groove, the central pipe, and the small end sealing buckle are all arranged on the same shaft.

3. The all-metal hydraulic oscillation impactor according to claim 1, Its characteristics are: The transmission sleeve comprises: a sealing groove, a sealing surface, a storage, a thread, an inner square or a spline; and its characteristic is that: the sealing groove, the sealing surface, the storage, the thread, the inner square or the spline are all arranged in the transmission sleeve.

4. The all-metal hydraulic oscillation impactor according to claim 1, Its characteristics are: The spiral body comprises: a spiral body, an upper flange, an upper concave ring, a spiral tapered hole, a central circular hole, an eccentric elliptical hole, a straightening sleeve, a lower concave ring, an upper chip removal ring, a lower chip removal ring, a chip removal hole, and an overflow chamber; its characteristics are: the spiral body is a cylinder, one end of which is provided with an upper flange, an upper concave ring, and a central circular hole, and the other end is provided with an eccentric hole, a lower concave ring, and an overflow chamber; the straightening sleeve, the upper chip removal ring, the lower chip removal ring, and the chip removal hole are arranged on the cylindrical surface of the spiral body; the spiral tapered hole runs through both ends of the spiral body, respectively connecting the central circular hole and the eccentric hole, and spirally transitions from the central circular hole on one end face to the eccentric hole on the other end face, with a spiral angle of 0-360° and a cone angle of 0-90°; the overflow chamber is a semicircular or polygonal trapezoidal chamber, which is distributed in a semicircular manner on one end face of the spiral body, symmetrically arranged with the eccentric hole, and a lower concave ring is arranged on its outer side.

5. The all-metal hydraulic oscillation impactor according to claim 1, Its characteristics are: The pressure-starting plate comprises: a plate body, a through hole, and edges; the plate body is a polygon, the through hole is arranged on the end surface thereof, and edges are arranged on the periphery thereof.

6. The all-metal hydraulic oscillation impactor according to claim 1, Its characteristics are: The transmission shaft comprises a two-body structure: one body is provided with a large end thread of the transmission shaft, a shaft sealing surface, a middle outer square or spline, an end shaft groove and a threaded thread, and the other body is provided with a central pipe, a threaded thread and a small end sealing buckle; and the characteristic is that the two bodies are connected by a threaded thread.

7. The all-metal hydraulic oscillation impactor according to claim 1, Its characteristics are: The lower joint comprises two structures. One structure is that the two ends of the lower joint are drill rod buckles, one end is connected to the outer sleeve, and the other end is connected to the drilling tool; the other structure is that the lower joint and the outer sleeve are an integral structure.

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