CN212105720U - Dual-fluid driven rotary percussion drilling impactor - Google Patents

Abstract

The utility model discloses a dual-liquid-driven rotary punching drilling impactor, comprising an outer pipe, a ram and an anvil, and a mud motor, which is installed in the outer pipe; an oil pressure system component installed in the outer pipe includes an oil tank and a mud motor. Oil pump; the output shaft of the hydraulic motor is connected with the transmission shaft of the oil pump; the oil pump is connected to the oil inlet of the cylinder body through the oil passage to generate the driving force of the driving piston, and there is an oil return passage on the cylinder body to connect the cylinder body and the oil tank; the ram is connected to the on the piston; the anvil is installed under the hammer; the flushing fluid channel is isolated from the oil circuit of the sealing oil pressure system component, and penetrates from the upper end of the outer tube to the lower end of the outer tube. The mud motor is driven by the flushing liquid, and the mud motor drives the oil pump in the closed oil pipe, and the oil pump drives the piston to generate reciprocating motion to drive the hammer outside the hydraulic system component to hit the anvil. The life of the components can meet the requirements of drilling and lifting interval, so that the advantages of rotary punching drilling can be brought into full play.

Description

Dual-fluid driven rotary percussion drilling impactor

technical field

The utility model relates to a drilling impactor, in particular to a dual-fluid (flushing fluid, hydraulic oil) rotary punching drilling impactor.

Background technique

In drilling operations for geological or petroleum exploration, an impactor is connected to the upper part of the drill bit, and the hammer of the impactor moves up and down to impact the anvil to generate impact kinetic energy. The rock is broken under the action of shearing force, and this drilling method is called rotary percussion drilling. Rotary percussion drilling can greatly improve the drilling speed, and at the same time, it has the advantages of anti-deviation effect and prolonging the service life of the drill bit. Rotary penetration drilling can be widely used in hard rock formations, formations with easy hole deviation and strong abrasive formations. In addition, in the process of horizontal drilling, the friction force between the drilling tool and the formation can be overcome, and the problem of low drilling pressure of the drill bit can be solved. It can be used in oil drilling, coalbed methane and shale gas drilling, and geothermal drilling, and can also meet the requirements of ultra-deep drilling for speed-up drilling.

"A drilling tool capable of generating axial impact vibration" disclosed by CN203296693U relates to an impactor, which is composed of an outer pipe, an inner cylinder, a hammer and an anvil. The upper end of the outer pipe is connected to a drill string through an upper joint, and the anvil is Connect the drill bit or the lower drill string through the lower joint, the hammer is slidably arranged in the outer tube, and the change of the action area difference when the high-pressure flushing fluid acts on the upper and lower end faces of the hammer is used to push the hammer to reciprocate up and down in the outer tube to strike the anvil. Passing the drill string through the outer tube transmits the torque to the drill bit, and at the same time transmits the impact vibration of the anvil to the drill bit. However, this kind of impactor has the following shortcomings: the flushing fluid, namely mud, is used as the power medium, and the particles in the flushing fluid enter the gap between the piston structure of the hammer and the outer tube, which increases the wear and leads to a low life of the impactor. Can not meet the requirements of drilling interval (generally required downhole working time is more than 120 hours), so that the application of rotary percussion drilling technology is limited, and the advantages of rotary percussion drilling cannot be fully exerted.

In view of this, the present invention is proposed.

Utility model content

In view of the above-mentioned problems existing in the existing rotary percussion drilling, the purpose of this utility model is to provide a dual-liquid-driven rotary percussion drilling impactor, so as to reduce the wear of the flushing fluid on the impactor, improve the service life, and further meet the requirements of drilling interval requirements.

The technical scheme of the present utility model is:

A dual-liquid-driven rotary punch drilling impactor includes an outer tube, a ram and an anvil, and further includes

A mud motor, installed in the outer pipe, is used for being driven by the flushing liquid to output rotational power;

Sealed hydraulic system components, including an oil tank and an oil pump, the oil pump is used to pressurize the hydraulic oil, and the oil pump drive shaft is connected with the output shaft of the hydraulic motor; it also includes a cylinder body and a piston reciprocating in the cylinder body, the oil pump The oil passage is connected to the oil inlet passage of the cylinder block to generate the driving force for driving the piston, and there is an oil return passage on the cylinder block to connect the cylinder block and the oil tank;

a ram, located in the outer tube and connected to the piston;

an anvil, mounted on the lower end of the outer tube and below the hammer;

The flushing fluid channel is isolated from the oil circuit of the sealing oil pressure system component in the outer tube, and runs through the upper end of the outer tube to the lower end of the outer tube.

The oil tank can be an independent oil tank, the oil outlet is connected to the oil inlet of the oil pump, and the oil return port is connected to the oil return passage of the cylinder block. In order to reduce pipelines and improve structural tightness, the oil tank is a section of oil storage pipe filled with hydraulic oil, the oil pump is immersed in the hydraulic oil in the oil storage pipe, and a transmission shaft as the power input of the oil pump passes through the upper end of the oil storage pipe A cover is attached to the output shaft of the mud motor. In this way, the inlet of the oil pump does not need to be connected with pipes, and the structure is compact, which improves the utilization rate of the inner space of the outer pipe.

In the utility model, the piston and cylinder of the sealed hydraulic system assembly can adopt the structure and driving mode of the traditional impactor, except that the flushing fluid is replaced with hydraulic oil. In the present utility model, as a preferred embodiment, a more advanced structure is adopted: the lower end of the oil storage pipe is connected to the piston cylinder, the piston cylinder is equipped with a rotary valve piston, and the output shaft of the mud motor or the shaft of the oil pump is also Passing through the upper end cover of the piston cylinder, inserted into the rotary valve piston through a key, spline or non-circular section to drive the rotary valve piston to rotate, and a plurality of oil passages on the rotary valve piston lead to the piston respectively On the upper end face and the lower end face, the oil passage communicates with the oil inlet passage and the oil return passage on the piston cylinder through the oil port respectively within the piston stroke range, the oil inlet passage is connected with the oil pump outlet, and the oil return passage is connected with the oil storage pipe. In this structure, the rotary valve piston is not only a component that generates up and down reciprocating motion, but also a part of the oil circuit switching valve. The structure is simple and ensures that when one end of the rotary valve piston is always in the high pressure area, the other end is in the low pressure area, which ensures that the two ends of the piston are in the low pressure area. There is sufficient pressure difference between the upper and lower chambers.

The oil passages on the rotary valve piston can be holes on the piston. In order to simplify the structure and facilitate processing, especially to ensure easy communication with the oil inlet and oil return passages on the piston cylinder, a uniform distribution along the sidewall of the piston can be adopted. The axial oil channel of the piston is alternately arranged with the oil channel leading to the upper end of the piston and the oil channel leading to the lower end of the piston. When there is one oil passage, the other one corresponds to the oil passage leading to the upper end face of the rotary valve piston.

Further, the mud motor is a turbine motor or a screw motor or a gear motor.

In order to simplify the structure, further, the output shaft of the mud motor is connected to a transmission shaft which penetrates through the oil pump, and the lower end of the transmission shaft is inserted into the piston to drive the oil pump and the piston to rotate at the same time.

In the present invention, the dual fluids of the dual fluid driving rotary drilling impactor are flushing fluid for full-hole circulation and hydraulic oil for closed circulation in the impactor.

The utility model utilizes flushing fluid to drive a mud motor, the mud motor drives an oil pump in a sealed oil pressure system assembly, and the oil pump drives a piston to generate reciprocating motion to drive a hammer outside the sealed oil pressure system assembly. It is driven by hydraulic oil instead of flushing fluid, and the hydraulic system is in a closed system and is isolated from the flushing fluid, thus improving the life of the piston components and solving the problem of the low life of the impactor directly driven by the existing flushing fluid. Can not meet the requirements of the drilling interval (generally requires that the downhole working time is more than 120 hours), so that the advantages of rotary percussion drilling can be brought into full play.

Description of drawings

FIG. 1 is a schematic structural diagram of state 1 of the dual-liquid-driven rotary percussion drilling impactor of the present invention.

Fig. 2 is a schematic structural diagram of the second state of the dual-liquid-driven rotary percussion drilling impactor.

Figure 3 is a schematic diagram of the structure of the power section.

FIG. 4 is a schematic structural diagram of the upward state of the piston of the impulse section;

FIG. 5 is a second structural schematic diagram of the piston descending state of the impulse section;

FIG. 6 is a schematic diagram of another embodiment of the impulse segment;

Fig. 7 is the structural schematic diagram of the impact section;

Fig. 8 is the A-A sectional view of Fig. 7;

In the picture: 1. Upper connector, 2. Outer tube 1, 3. Motor upper connector, 4. Screw motor, 5. Motor lower connector, 6. Motor output shaft, 7. Transmission shaft, 8. Middle connector, 9. Mud Through chamber, 10, mud channel, 11, upper end cover, 12, oil storage pipe, 13, outer pipe two, 14, oil pump, 15, annular gap, 16, accumulator, 17, upper chamber, 18, oil inlet , 19, oil return channel, 20, lower chamber oil channel, 21 upper chamber oil channel, 22, piston cylinder, 23, rotary valve piston, 24, lower chamber, 25, valve body piston cover, 26, hammer chamber, 27. Hammer, 28, Outer tube 3, 29, Centralizing ring, 30, Centralizing joint, 31, Anvil, 32, Sliding bushing, 33, Adjusting pad, 34, Lower joint, 35, Inner cylinder, 36, Piston

100, power section, 200, impulse section, 300, impact section, 400, anvil section

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present utility model.

As shown in Figure 1 and Figure 2, it is a preferred embodiment of a dual-liquid-driven rotary percussion drilling impactor of the present invention. The outer casing is an external round pipe structure (referred to as "outer pipe"), the upper end is connected with an upper joint 1 through threads to facilitate connection with the drill pipe, and the lower end is a lower joint 34, which is used to directly connect the drill bit or coring pipe.

In order to facilitate processing and assembly, the outer tube is assembled from three sections, namely outer tube 1 2, outer tube 2 13 and outer tube 3 28. Each section of outer tube is assembled with different components to form different functional sections. The outer tube 1 2 and the outer tube 2 13 are connected by a middle joint 8, the outer tube 3 28 is connected to the righting joint 30 by threaded connection, and the anvil 31 connecting the lower joint 34 is installed on the righting joint 30 and sliding. Inside the shaft sleeve 32, essentially each joint is also a section of outer tube.

A screw motor 4 (or a turbine motor or a gear motor) is installed inside the outer tube 1 , as the screw motor 4 driven by the flushing liquid generates primary power, so this part is the power section 100 . The second outer tube 13 is installed with hydraulic system components. The mud motor of the power section 100 is used as the power source to drive the oil pump 14 to generate high pressure oil and then drive the piston to reciprocate to form an impact action, which is the impulse section 200 . The third outer tube 28 is the movement space section of the hammer 27 , which is the impact section 300 , and the lower end is the anvil section 400 on which the anvil 31 is installed. Hereinafter, detailed descriptions will be made in each paragraph in conjunction with the accompanying drawings.

The power section is shown in Figure 3. Inside the outer tube one 2, a screw motor 4 is installed and fixed inside the outer tube one 2 through the motor upper joint 3 and the motor lower joint 5 at both ends. The motor upper joint 3 and the motor lower joint 5 are flanges. , through the flat or inclined shoulders at both ends of the outer pipe 2 and the upper joint 1 and the middle joint 8 threadedly connected with the outer pipe 1, the upper joint 1 and the middle joint 8 are tightly clamped. This installation method is simple, firm and quick to disassemble. After driving the screw motor 4, the flushing liquid entering the upper joint 1 and the outer pipe-2 enters the mud passing chamber 9 in the middle joint 8 through the central channel of the motor output shaft 6, and is further transported downward through the mud channel 10. The screw motor 4 can also be replaced by a turbine motor and a gear motor. These types of hydraulic motors all use high-pressure mud to drive the output shaft to rotate. As the prior art, the specific structure of the mud motor will not be described.

The output shaft of the screw motor 4 is connected to the transmission shaft 7 through a spline or a regular polygon as shown in FIG.

The structure of the impulse section is shown in Figure 4. In the outer tube 2 13, it is a key component to realize the generation of impact kinetic energy, and is a set of hydraulic system components. An oil storage pipe 12 is coaxially installed in the outer pipe 2 13, which is filled with hydraulic oil as an oil tank. The upper end of the oil storage pipe 12 is sealed by the upper end cover 11, and the upper end cover 11 and the oil storage pipe 12 are connected by threads and are closed by the flange in FIG. 3 . The middle joint 8 of the upper end cap 11 is pressed against the inner wall of the second outer tube 13, and the flange of the upper end cover 11 is annularly provided with a through hole to form a mud channel 10, so that the mud on the upper part of the upper end cover 11 enters the second outer tube through the mud channel 10. 13 and the oil storage pipe 12 in the annular gap 15, and then conveyed downward, and at the same time, the mud also has a cooling effect on the oil storage pipe 12. The lower end of the oil storage pipe 12 is connected with a piston cylinder 22 through threads, and the piston cylinder 22 is connected with a valve body piston cover 25 through threads to seal the lower end of the piston cylinder 22 . The valve body piston cover 25 is pressed tightly by the outer tube 3 28 , and there are through holes in the periphery thereof so that the mud in the annular gap 15 can enter the outer tube 3 28 .

The core hydraulic medium power component of the utility model, as a specific scheme of a preferred embodiment, is as follows: the oil storage pipe 12 is provided with hydraulic oil and an oil pump 14, the piston cylinder 22 is equipped with a rotary valve piston 23, and the rotary valve piston 23 is both a through The valve that rotates to switch the oil circuit forms a piston that realizes the up-and-down reciprocating motion under the action of the hydraulic oil pressure difference, which is the ingenious part of the utility model. The transmission shaft 7 passing through the upper end cover 11 is used as the input shaft of the oil pump 14 and penetrates through the oil pump 14 and is inserted into the inner cavity of the piston cylinder 22. There is a seal between the transmission shaft 7 and the upper end cover 11 to isolate the hydraulic oil from the mud. . In order to ensure the pressure of the upper chamber 17 that pushes the rotary valve piston 23 to move downward, there is also a seal between the transmission shaft 7 and the upper end of the piston cylinder 22, such as a packing seal or an O-ring seal. The oil outlet of the oil pump 14 is connected to the oil inlet 18 of the piston cylinder 22 after being stored by the accumulator 16, so as to pass high-pressure hydraulic oil into the inner cavity of the piston cylinder 22, and the piston cylinder 22 has an oil return passage 19. The middle of the chamber of the piston cylinder 22 is connected to the oil storage space of the oil storage pipe 12. In this embodiment, the oil pump 14 is directly immersed in the hydraulic oil of the oil storage pipe 12, that is, the hydraulic oil is directly from the oil storage chamber of the oil storage pipe 12. into the oil pump 14 , so the oil return passage 19 only needs to be connected to the oil storage space of the oil storage pipe 12 , and there is no need to connect it to the oil inlet of the oil pump 14 with a pipeline. The rotary valve piston 23 is sleeved on the lower end of the transmission shaft 7, and transmits torque through a spline or regular polygon structure, that is, the transmission shaft 7 can transmit torque to the rotary valve piston 23 to make it rotate to switch the oil inlet and outlet directions of the oil circuit. The piston 23 can reciprocate up and down along the transmission shaft 7 in the cavity of the piston cylinder 22 . On the outer side wall of the rotary valve piston 23, there is an axial lower cavity oil channel 20 which leads to the lower end surface of the rotary valve piston 23 to communicate with the lower chamber 24, and the upper chamber oil channel 21 leads to the upper chamber 17 on the upper end surface of the rotary valve piston 23. In this embodiment, the oil inlet passage 18 and the oil return passage 19 on the piston cylinder 22 are symmetrically arranged, and the lower chamber oil passage 20 and the upper chamber oil passage 21 on the rotary valve piston 23 are also symmetrical and alternately arranged. In this way, as shown in FIG. 4 , after the high-pressure hydraulic oil generated by the oil pump 14 is stored and buffered by the accumulator 16 , it enters the rotary valve along the oil inlet passage 18 of the piston cylinder 22 through the lower cavity oil passage 20 on the side wall of the rotary valve piston 23 . When the lower chamber 24 is located under the valve piston 23, the upper chamber 17 above the rotary valve piston 23 is connected to the oil return passage 19 of the piston cylinder 22 through the upper chamber oil passage 21 on the side wall of the rotary valve piston to connect with the oil storage pipe. The cavity is connected to the fuel tank.

Due to the state shown in FIG. 4 , the lower chamber 24 enters the high-pressure hydraulic oil pressurized by the oil pump 14 , the upper chamber 17 is under normal pressure because it communicates with the oil tank, and the high-pressure hydraulic oil that continuously enters the lower chamber 24 under the action of the pressure difference The oil quickly pushes the rotary valve piston 23 to move upward, and at the same time, the hydraulic oil in the upper chamber 17 returns to the oil tank formed by the oil storage pipe 12 through the upper chamber oil passage 21 and the oil return passage 19 to realize the circulation of hydraulic oil.

Since the rotary valve piston 23 is also driven to rotate by the transmission shaft 7 during the upward movement, when it rotates for a certain angle, as shown in FIG. The oil passage 18 communicates with each other, and the lower cavity oil passage 20 communicates with the oil return passage 19, which is equivalent to completing the reversing switching of the piston oil circuit. At this time, the high-pressure hydraulic oil enters the upper chamber 17 so that the upper chamber 17 becomes high pressure, the lower chamber 24 becomes normal pressure due to the communication with the oil tank, and the rotary valve piston 23 moves downward rapidly under the action of the pressure difference. When the rotary valve piston 23 is continuously rotated under the drive of the transmission shaft 7, since the upper chamber 17 and the lower chamber 24 realize the alternate transformation of high pressure and normal pressure, the rotary valve piston 23 reciprocates up and down in the piston cylinder 22, and passes through the cylinder 22. The connecting rod of the valve body piston cover 25 drives the ram 27 to perform a reciprocating impact motion.

The structure of this preferred embodiment, by setting the number of the upper cavity oil passage 21 and the lower cavity oil passage 20 on the rotary valve piston 23, and matching the rotational speed of the rotary valve piston 23, the change of the number of oil circuit switching per unit time can be realized, Thereby designing different shock frequencies. By matching the output pressure of the oil pump 14 and the end face areas of the rotary valve piston 23 in the upper cavity 17 and the lower cavity 24, different impact kinetic energy can be designed.

In order to generate a buffer force when the rotary valve piston 23 moves upward to the top of the stroke to avoid the hard collision between the rotary valve piston 23 and the piston cylinder 22, as shown in FIG. 4 and FIG. There is an annular boss, correspondingly, an annular groove is formed on the piston cylinder 22 around the transmission shaft. When the rotary valve piston 23 moves upwards until the boss is inserted into the groove to form a closed oil cavity, the hydraulic oil in the groove will generate an annular groove. The oil pad acts as a buffer.

In FIG. 6 , it is another embodiment of the oil hydraulic system assembly in the second outer pipe 13 . An inner cylinder 35 is fixedly arranged in the oil storage pipe 12, and an oil inlet passage 18 is arranged in the middle. The piston 36 is installed between the inner cylinder 35 and the oil storage pipe 12. The upper middle of the piston 36 corresponds to the oil inlet passage 18 of the inner cylinder 35. There is a throttling bulge at the position, a limiting boss at the lower part, an oil inlet channel on the piston connecting the upper cavity 17 and the lower cavity 24, an oil return channel 19 connecting the inner space of the lower cavity 24 and the oil storage pipe 12, and the return oil on the piston 36. The flow cross section of the oil passage 19 is smaller than the total flow cross section of the oil inlet passage. The piston 36 is also connected to the ram through the connecting rod. The structure of the upper end cover 11 is the same as that in Figs. The outlet of the oil pump 14 driven by the transmission shaft 7 is connected to the oil inlet passage 18 of the inner cylinder 35. The high pressure hydraulic oil generated by the oil pump 14 enters the lower chamber 24 under the piston through the oil inlet passage on the piston 36. The flow cross section is smaller than the total flow cross section of the oil inlet, resulting in a throttling effect, so the pressure of the lower cavity 24 below the piston 36 increases. The pressure is greater than the downward pressure, and the pressure difference pushes the piston 36 to rise against gravity and resistance. When the throttling protrusion on the piston 36 enters the injection port of the oil inlet 18 of the inner cylinder 35, the flow area of the hydraulic oil is reduced, and oil is generated. Under the impact action, the piston 36 moves downward at a high speed under the pressure of the oil impact, pushing the hammer to impact the anvil.

The structure of the ram section is shown in FIG. 7 , which is connected to the outer pipe 3 28 at the lower end of the outer pipe 2 13 and is the ram chamber 26 . Since the ram 27 in the present invention is a counterweight, the inertial force is improved by the mass, and the impact resistance performance is improved by the mechanical properties of the material. Therefore, the ram 27 is not oscillated during the operation by a centralizing ring 29 to ensure that the ram 27 does not swing during operation. There is a sufficient annular gap between the hammer 27 and the inner wall of the third outer tube 28 , which not only acts as a channel for conveying mud to the drill bit, but also prevents the hammer from contacting and rubbing against the third outer tube, thus improving the life of the hammer 27 . The centralizing ring 29 is uniformly distributed with through holes to form a mud channel. Due to the arrangement of the ram centering ring 29, even if the impactor is horizontal or inclined, the ram can still be kept in the center position without being deflected downward under gravity, which can be used for horizontal drilling.

In FIG. 7 , the lower end of the outer tube 28 is connected with a sliding bushing 32 through a centralizing joint 30 that is threadedly connected, an anvil 31 is installed in the centralizing joint 30 and the sliding bushing 32, and the lower end of the anvil 31 is threadedly connected with a lower joint 34 . The upper end of the anvil 31 is located in the inner part of the centralizing joint 30 and has a large diameter and is equipped with an O-ring. The shoulder and the upper edge of the sliding sleeve 32 form a lower limit anti-drop structure. There is an adjustment pad 33 between the sliding shaft sleeve and the lower joint 34, so as to adjust the size of the stroke of the ram. There is a mud channel in the center of the anvil 31 to lead to the drill bit.

In order to facilitate the discharge of mud when the ram 27 moves up and down, the upper and lower ends of the ram 27 are designed with chamfered or rounded corners. The middle part of the upper end of the anvil 31 adopts a mushroom head protrusion, and the root of the mushroom head protrusion is an oblique hole that communicates with the mud channel in the middle part. In this way, the force-bearing area of the impact part can be increased without affecting the mud flow, and the impact part can be made of high impact-resistant materials.

The torque transmission between the anvil 31 and the sliding sleeve 32 is as shown in FIG. 8 , and a polygonal mating section is used.

According to the above principle, it can be understood that the dual-fluid driving rotary punching drilling method of the present invention is as follows: while drilling by using the drill pipe to provide rotary torque for the drill bit, the mud motor in the downhole outer pipe is also driven by the flushing fluid, and the The downhole mud motor drives the oil pump of the sealed oil pressure system, and the high-pressure hydraulic oil generated by the oil pump drives the piston to reciprocate. .

The utility model adopts a dual-circuit circulation system, one for mud circulation and the other for oil pressure circulation. Mud circulation: The drilling mud drives the mud motor to rotate, and the working mud passes around the hydraulic oil tank (oil storage pipe) to cool the hydraulic oil tank, and then enters the hammer cavity 26 through the annular gap 15 between the outer pipe and the piston cylinder. the impact area, and then flows to the bottom drill bit through the anvil drain hole. Oil pressure circulation: The screw motor or turbine motor rotates to drive the oil pump. The high-pressure hydraulic oil pumped by the oil pump enters the cylinder through the oil inlet, and uses the pressure and area difference between the upper cavity and the lower cavity of the upper and lower ends of the piston to generate the driving force to push the piston. The piston is reciprocated up and down, and the return oil is returned to the oil tank through the return oil passage. The entire hydraulic oil system is completely closed cycle and does not come into contact with mud.

Claims (9)

1. a dual-liquid driving rotary punching drilling impactor, comprising outer pipe, ram and anvil, is characterized in that also comprising: The mud motor is installed in the outer pipe and is used for being driven by the flushing liquid to output rotational power; the sealed oil pressure system components installed in the outer pipe include an oil tank and an oil pump, and the output shaft of the mud motor is connected with the transmission shaft of the oil pump; also included in the The piston reciprocating in the cylinder, the oil pump is connected to the oil inlet of the cylinder through the oil passage to generate the driving force for driving the piston, and there is an oil return passage on the cylinder to connect the cylinder and the oil tank; a ram, located in the outer tube and connected to the piston; an anvil, mounted on the lower end of the outer tube and below the hammer; The flushing fluid channel is isolated from the oil circuit of the sealing oil pressure system component, and penetrates from the upper end of the outer pipe to the lower end of the outer pipe. 2. The dual-liquid driving rotary punching drilling impactor according to claim 1, wherein the oil tank is a section of oil storage pipe filled with hydraulic oil, and the oil pump is immersed in the hydraulic oil in the oil storage pipe as an oil pump The transmission shaft of the power input is connected to the output shaft of the mud motor through the upper end cover of the oil storage pipe. 3. The dual-liquid driving rotary punching drilling impactor as claimed in claim 2, wherein the lower end of the oil storage pipe is connected to a piston cylinder, the piston cylinder is equipped with a rotary valve piston, the mud motor output shaft or the oil pump The shaft also passes through the upper end cover of the piston cylinder, and is inserted into the rotary valve piston through a key, spline or non-circular section to drive the rotary valve piston to rotate, and there are multiple passages on the rotary valve piston. The oil passages to the upper end face and the lower end face of the piston communicate with the oil inlet passage and the oil return passage on the piston cylinder through oil ports respectively. The oil inlet passage communicates with the oil pump outlet, and the oil return passage communicates with the oil storage pipe. 4. The dual-liquid drive rotary punching drilling impactor according to claim 3, wherein the oil passage on the rotary valve piston is an axial oil channel evenly distributed along the side wall of the piston, leading to the upper end face of the piston and the The oil passages leading to the lower end of the piston are alternately arranged, and the oil inlet passages and the oil outlet passages on the piston cylinder are set to one corresponding to the oil passage grooves leading to the lower end face of the piston of the rotary valve, and the other corresponding to the oil passages leading to the rotary valve piston. The oil passage on the upper end face of the valve piston. 5. The dual-liquid driving rotary punching drilling impactor according to claim 3, characterized in that: an annular boss is provided around the transmission shaft on the upper end face of the rotary valve piston, and correspondingly there is an annular boss on the piston cylinder. groove. 6. The dual-hydraulic drive rotary punching drilling impactor as claimed in claim 2, wherein the output shaft of the mud motor is connected to a transmission shaft that runs through the oil pump, and the lower end of the transmission shaft is inserted into a piston to drive the oil pump simultaneously and the piston rotates. 7 . The dual-fluid-driven rotary ram drilling impactor according to claim 1 , wherein a centralizing ring is arranged between the ram and the outer pipe. 8 . 8 . The dual-liquid driving rotary percussion drilling impactor according to claim 1 , wherein a mushroom head bulge is used in the middle of the upper end of the anvil, and the root of the mushroom head bulge has an inclined hole that communicates with the mud channel in the middle. 9 . 9. The dual-liquid driving rotary punching drilling impactor according to claim 1, characterized in that: the lower end of the outer tube is connected with a centralizing joint and a sliding bushing, and the anvil is installed in the centralizing joint and the sliding bushing, and the anvil is The lower end of the anvil is connected with a lower joint, the part of the upper end of the anvil located inside the centralizing joint has a large diameter and is equipped with an O-ring, and the part of the lower end passing through the sliding bushing has a small diameter, correspondingly, the inner diameter of the sliding bushing is also small, and the sliding bushing and the sliding bushing have a small diameter. There are adjustment pads between the lower joints.

Images