Pulse positive displacement motor

Abstract

The present invention discloses a pulsed positive displacement motor, belonging to the technical field of positive displacement motors, which includes a rod body. A cavity is formed inside the rod body. An auxiliary component is arranged on the outer peripheral side of the rod body. A transmission shaft is drivingly connected inside the rod body. An oscillation component is arranged on the outer surface of the transmission shaft. In the present invention, by arranging the oscillation component, the transmission shaft drives the oscillation hammer to oscillate in the vertical direction through the connecting ring, the extrusion block, the extrusion wheel, the second spring, the sliding rod and the sliding tube. At the same time, while the oscillation hammer is oscillating, the hydraulic medium can be driven to form an oscillating flow through the turbulent flow groove, strengthening the oscillation effect. The oscillation component can effectively reduce the frictional resistance of the drill bit in the formation by generating vibration force, improving the drilling efficiency. Moreover, the device can also help to separate the cuttings and mud between the drill bit and the formation through vibration, avoiding the deviation or blockage of the drill bit affected by the rock formation environment and ensuring the smooth progress of the drilling process.

Description

Technical Field

[0001] The present invention belongs to the technical field of positive displacement mud motors, and particularly relates to a pulsed positive displacement mud motor. Background Art

[0002] A positive displacement mud motor is a positive displacement downhole motor that uses drilling fluid as power to convert liquid pressure energy into mechanical energy. The positive displacement mud motor has become an indispensable drilling tool in drilling operations, and it plays a particularly important role in special processes such as directional wells, horizontal wells, extended reach wells, multi-branch wells, and cluster wells in oil, geological exploration, geothermal wells, and coalbed methane extraction.

[0003] A document with the publication number CN118793368A discloses a multi-functional positive displacement mud motor, belonging to the technical field of oil drilling tools, including a bypass valve assembly, an anti-disconnection assembly, a motor assembly, a universal shaft assembly, a drive shaft assembly, and a connection assembly that are sequentially screwed from top to bottom. A rotation assembly is connected and installed on the connection assembly in a communicating manner. An adjustment assembly is slidably connected to the rotation assembly. A plurality of diversion holes and a plurality of flow conversion holes are formed in the rotation assembly. A diversion channel is formed between the rotation assembly and the adjustment assembly. A plurality of first drainage holes are formed in the adjustment assembly in a communicating manner. A drainage channel communicating with the flow conversion holes is formed in the adjustment assembly. When the feeding speed of the positive displacement mud motor and the drill bit is greater than the drilling speed, the drill bit and the transmission column slide upward relative to the rotating pipe, and the diversion holes are gradually blocked by the transmission column, so that the drilling fluid pressure gradually increases and impacts the transmission column, prompting the transmission column to move downward. The mud pump continuously transports the drilling fluid to achieve impact and rotary combined drilling, improving the drilling efficiency. However, in the actual construction process, due to the generally deep drilling depth, the drill bit is affected by the deep rock formation environment and may be blocked or difficult to drill. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a pulsed positive displacement mud motor to solve the problem that the drilling depth is generally deep, so that the drill bit is affected by the deep rock formation environment and may be blocked or difficult to drill.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A pulsed positive displacement mud motor includes a rod body. A cavity is formed inside the rod body. An auxiliary assembly is arranged on the outer peripheral side of the rod body. A drive shaft is drivingly connected inside the rod body. An oscillation assembly is arranged on the outer surface of the drive shaft. One end of the drive shaft extends to the outside of the rod body and is connected to a rotating table. A drill bit is arranged at the bottom of the rotating table through an adjustment assembly.

[0007] The oscillation assembly includes an oscillation hammer capable of reciprocating vibration. The outer periphery of the oscillation hammer is provided with turbulent flow grooves distributed in a circumferential array. The top of the oscillation hammer is connected to a sliding tube, and the top of the sliding tube is connected to a plurality of sliding rods capable of reciprocating motion. The outer surface of the transmission shaft is rotatably connected to a fixed partition plate, and the fixed partition plate is connected to the inner wall of the cavity. The fixed partition plate is provided with a plurality of communication grooves distributed in a circumferential array. A rotating oscillation plate is arranged on the top of the fixed partition plate. A conveying groove is provided on one side of the top of the rotating oscillation plate. The rotating oscillation plate drives the conveying groove to rotate and cooperates with the conveying groove to achieve eccentric conveying of the hydraulic medium, thereby completing the eccentric oscillation of the hydraulic medium.

[0008] As a further description of the above technical solution:

[0009] The rotating oscillation plate is connected to the outer surface of the transmission shaft. The bottom of the rotating oscillation plate is in contact with the top of the fixed partition plate, and the conveying groove is periodically communicated with the communication groove during the rotation process.

[0010] As a further description of the above technical solution:

[0011] A plurality of the sliding rods are distributed in a circumferential array along the sliding tube. A plurality of mounting frames distributed in a circumferential array are connected inside the cavity. The sliding rods are slidably connected to the mounting frames. One end of the sliding rod away from the sliding tube is connected to a pressing wheel. A second spring is sleeved on the outer surface of the sliding rod, and two ends of the second spring are respectively connected to one side of the mounting frame and one side of the pressing wheel.

[0012] As a further description of the above technical solution:

[0013] A connecting ring is connected to the outer surface of the transmission shaft. The connecting ring is located directly below the fixed partition plate. The bottom of the connecting ring is connected to a plurality of pressing blocks distributed in a circumferential array. The cross-sectional shape of the pressing block is semicircular. The pressing block periodically contacts the pressing wheel during the rotation process. Both the sliding tube and the oscillation hammer are sleeved on the outer surface of the transmission shaft.

[0014] As a further description of the above technical solution:

[0015] The auxiliary assembly includes a protective housing connected to the outer surface of the rod body. A plurality of left-right threaded screws distributed in a circumferential array are arranged inside the protective housing. Two symmetrically arranged screw seats are threadedly connected to the outer surface of the left-right threaded screws. One side of the screw seat is hinged to a connecting rod. One end of the two connecting rods away from the screw seat is hinged to the same moving plate. A plurality of auxiliary wheels distributed in a linear array are arranged on one side of the moving plate away from the connecting rod. An auxiliary motor for driving is arranged on one side of the auxiliary wheel.

[0016] As a further description of the above technical solution:

[0017] Both ends of the forward and reverse lead screw are rotatably connected to mounting members. One side of the mounting member is connected to the outer peripheral side of the rod body. The forward and reverse lead screws are arranged in mirror symmetry along the central position, and the thread directions on both sides of the forward and reverse lead screws are opposite. A plurality of moving grooves distributed in a circumferential array are formed on the outer peripheral side of the protective housing, and the lead screw seat is slidably connected in the moving grooves.

[0018] As a further description of the above technical solution:

[0019] On the side of the moving plate away from the connecting rod, a plurality of telescopic rods distributed in a linear array are connected. One end of the telescopic rod away from the moving plate is connected to one side of the auxiliary wheel. A first spring is sleeved on the outer surface of the telescopic rod, and both ends of the first spring are respectively connected to one side of the moving plate and one side of the auxiliary wheel.

[0020] As a further description of the above technical solution:

[0021] One end of the forward and reverse lead screw extends to one side of the mounting member and is connected with a transmission gear. A rotating toothed ring is rotatably connected to the outer surface of the rod body. The rotating toothed ring is meshed and connected with a plurality of transmission gears. A driving motor is fixedly installed on the outer periphery of the rod body through a mounting plate. One end of the output shaft of the driving motor is connected with a driving gear, and one side of the driving gear is meshed and connected with one side of the rotating toothed ring.

[0022] As a further description of the above technical solution:

[0023] The adjustment assembly includes a plurality of hydraulic push rods, which are distributed in a circumferential array along the axis of the rotating table. One end of the hydraulic push rod is hinged to one side of the rotating table through a first mounting seat. The end of the hydraulic push rod away from the rotating table is hinged with a connecting rod through a second mounting seat. The connecting rod is hinged to one side of the rotating table through a third mounting seat. One side of the connecting rod away from the rotating table is connected with an alignment plate, and one side of the alignment plate is rotatably connected with the drill bit.

[0024] As a further description of the above technical solution:

[0025] One end of the rod body away from the rotating table is connected with a connecting mechanism. A bypass valve, a motor assembly and a universal shaft assembly are sequentially arranged in the rod body from top to bottom. One end of the universal shaft assembly is connected with the transmission shaft.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In the present invention, by providing an oscillation assembly, the drive shaft drives the conveying groove to rotate through the rotating oscillation plate. In cooperation with the communication groove, when the hydraulic medium flows through, an eccentric eddy current is periodically formed. Through the eccentric movement of the eddy current, the rod body is driven to oscillate. At the same time, the drive shaft drives the oscillation hammer to oscillate in the vertical direction through the connecting ring, the extrusion block, the extrusion wheel, the second spring, the sliding rod and the sliding tube. At the same time, when the oscillation hammer oscillates, the hydraulic medium can be driven to form an oscillating flow through the rapids groove, strengthening the oscillation effect. The oscillation assembly can effectively reduce the frictional resistance of the drill bit in the formation by generating vibration force, improving the drilling efficiency. Moreover, the device can also help to separate the cuttings and mud between the drill bit and the formation through vibration, avoiding the deviation or blockage of the drill bit affected by the rock formation environment and ensuring the smooth progress of the drilling.

[0028] 2. In the present invention, by providing an auxiliary assembly, when the drilling is completed, the drive motor drives the auxiliary wheel to gradually contact the drilling wall through the drive gear, the rotating toothed ring, the transmission gear, the forward and reverse lead screw, the lead screw seat, the connecting rod and the moving plate. After that, the auxiliary motor is started, and the auxiliary motor drives the auxiliary wheel to rotate. The auxiliary wheel drives the rod body to move upward through the frictional force between it and the drilling wall, reducing the pulling force on the rod body when taking out the rod, reducing the load on the rod body, and assisting the drill bit to exit the hole in a direct way at a short distance, avoiding the situation of the drill bit being stuck, improving the recovery effect and efficiency of the drill bit. At the same time, the auxiliary wheel cooperates with the telescopic rod and the first spring, and can buffer and absorb when the rod body contacts the drilling wall, thereby reducing the damage to the rod body and improving the service life of the rod body.

[0029] 3. In the present invention, by providing an adjustment assembly, the hydraulic push rod drives the drill bit to move through the connecting rod and the direction-adjusting plate, so that the distance between multiple drill bits can be adjusted, changing the outer expansion distance of the drill bits. In cooperation with the rod body, drill holes of different diameters can be drilled, meeting different construction requirements and improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS [[ID= nine]]

[0030] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention;

[0031] Figure 2 is the three-dimensional structure schematic diagram of another perspective of the present invention;

[0032] Figure 3 is the partial three-dimensional split structure schematic diagram of the present invention;

[0033] Figure 4 is of the present invention Figure 3 amplified structure schematic diagram of part A;

[0034] Figure 5 is the three-dimensional structure schematic diagram of the oscillation assembly of the present invention;

[0035] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of part B in

[0036] Figure 7 Schematic three - dimensional structure diagram of the auxiliary component of the present invention;

[0037] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of part C in

[0038] Figure 9 Schematic three - dimensional internal structure diagram of the auxiliary component of the present invention;

[0039] Figure 10 Schematic three - dimensional structure diagram of the adjustment component of the present invention;

[0040] Figure 11 Schematic diagram of the partially enlarged structure of the auxiliary component of the present invention.

[0041] Legend description:

[0042] 1. Connection mechanism; 2. Rod body; 3. Auxiliary component; 301. Protective shell; 302. Auxiliary wheel; 303. Moving groove; 304. Driving motor; 305. Driving gear; 306. Rotating toothed ring; 307. Positive and negative lead screw; 308. Lead screw seat; 309. Connecting rod; 310. Transmission gear; 311. Moving plate; 312. First spring; 313. Telescopic rod; 4. Rotating table; 5. Drill bit; 6. Adjustment component; 601. Direction - adjusting plate; 602. Connecting rod; 603. Hydraulic push rod; 7. Oscillation component; 701. Mounting frame; 702. Fixed partition; 703. Connecting ring; 704. Extrusion block; 705. Extrusion wheel; 706. Sliding rod; 707. Second spring; 708. Rotating oscillation plate; 709. Delivery groove; 710. Communication groove; 711. Sliding tube; 712. Oscillation hammer; 713. Torrent groove; 8. Transmission shaft. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0044] Please refer to Figures 1 - 11 , the present invention provides a technical solution:

[0045] A pulsed positive displacement downhole motor, comprising a rod body 2. A cavity is formed inside the rod body 2. An auxiliary assembly 3 is arranged on the outer peripheral side of the rod body 2. A transmission shaft 8 is drivingly connected inside the rod body 2. An oscillation assembly 7 is arranged on the outer surface of the transmission shaft 8. One end of the transmission shaft 8 extends to the outside of the rod body 2 and is connected to a rotating table 4. A drill bit 5 is arranged at the bottom of the rotating table 4 through an adjustment assembly 6. One end of the rod body 2 away from the rotating table 4 is connected to a connection mechanism 1. A bypass valve, a motor assembly and a universal shaft assembly are sequentially arranged in the rod body 2 from top to bottom. One end of the universal shaft assembly is connected to the transmission shaft 8.

[0046] The oscillation assembly 7 includes an oscillation hammer 712 capable of reciprocating vibration. A plurality of turbulent flow grooves 713 are formed in the outer circumference of the oscillation hammer 712 in a circumferential array. A sliding tube 711 is connected to the top of the oscillation hammer 712. A plurality of sliding rods 706 capable of reciprocating movement are connected to the top of the sliding tube 711. A fixed partition 702 is rotatably connected to the outer surface of the transmission shaft 8. The fixed partition 702 is connected to the inner wall of the cavity. A plurality of communication grooves 710 are formed in the fixed partition 702 in a circumferential array. A rotating oscillation plate 708 is arranged on the top of the fixed partition 702. A conveying groove 709 is formed on one side of the top of the rotating oscillation plate 708. The rotating oscillation plate 708 realizes the eccentric conveying of the hydraulic medium by driving the rotation of the conveying groove 709 and cooperating with the conveying groove 709, completing the eccentric oscillation of the hydraulic medium. The rotating oscillation plate 708 is connected to the outer surface of the transmission shaft 8. The bottom of the rotating oscillation plate 708 is in contact with the top of the fixed partition 702. And the conveying groove 709 is periodically communicated with the communication groove 710 during the rotation process. The plurality of sliding rods 706 are arranged in a circumferential array along the sliding tube 711. A plurality of mounting brackets 701 are connected inside the cavity in a circumferential array. The sliding rods 706 are slidably connected to the mounting brackets 701. One end of the sliding rod 706 away from the sliding tube 711 is connected to a pressing wheel 705. A second spring 707 is sleeved on the outer surface of the sliding rod 706. Two ends of the second spring 707 are respectively connected to one side of the mounting bracket 701 and one side of the pressing wheel 705. A connecting ring 703 is connected to the outer surface of the transmission shaft 8. The connecting ring 703 is located directly below the fixed partition 702. A plurality of pressing blocks 704 are connected to the bottom of the connecting ring 703 in a circumferential array. The cross-sectional shape of the pressing block 704 is semi-circular. The pressing block 704 is periodically in contact with the pressing wheel 705 during the rotation process. Both the sliding tube 711 and the oscillation hammer 712 are sleeved on the outer surface of the transmission shaft 8.

[0047] The implementation mode is specifically as follows: By setting the oscillation assembly 7, the transmission shaft 8 drives the conveying groove 709 to rotate by rotating the oscillation plate 708. In cooperation with the communication groove 710, when the hydraulic medium flows through, an eccentric eddy current is periodically formed. Through the eccentric movement of the eddy current, the rod body 2 is driven to oscillate. At the same time, the transmission shaft 8 drives the oscillation hammer 712 to oscillate in the vertical direction through the connecting ring 703, the extrusion block 704, the extrusion wheel 705, the second spring 707, the sliding rod 706 and the sliding tube 711. At the same time, when the oscillation hammer 712 oscillates, the hydraulic medium can be driven to form an oscillating flow through the rapids groove 713, strengthening the oscillation effect. The oscillation assembly 7 can effectively reduce the frictional resistance of the drill bit 5 in the formation by generating vibration force and improve the drilling efficiency.

[0048] The auxiliary assembly 3 includes a protective housing 301. The protective housing 301 is connected to the outer surface of the rod body 2. A plurality of left - right lead screws 307 arranged in a circular array are provided inside the protective housing 301. Two symmetrically arranged lead screw seats 308 are threadedly connected to the outer surface of the left - right lead screws 307. One side of the lead screw seat 308 is hinged with a connecting rod 309. The ends of the two connecting rods 309 away from the lead screw seat 308 are hinged to the same moving plate 311. A plurality of auxiliary wheels 302 arranged in a linear array are provided on the side of the moving plate 311 away from the connecting rod 309. An auxiliary motor for driving is provided on one side of the auxiliary wheels 302. Both ends of the left - right lead screws 307 are rotatably connected to mounting parts. One side of the mounting part is connected to the outer peripheral side of the rod body 2. The left - right lead screws 307 are arranged symmetrically along the central position, and the thread directions on both sides of the left - right lead screws 307 are opposite. A plurality of moving grooves 303 arranged in a circular array are opened on the outer peripheral side of the protective housing 301. The lead screw seat 308 is slidably connected in the moving groove 303. A plurality of groups of telescopic rods 313 arranged in a linear array are connected to the side of the moving plate 311 away from the connecting rod 309. The ends of the telescopic rods 313 away from the moving plate 311 are connected to one side of the auxiliary wheels 302. A first spring 312 is sleeved on the outer surface of the telescopic rod 313. Both ends of the first spring 312 are respectively connected to one side of the moving plate 311 and one side of the auxiliary wheels 302. One end of the left - right lead screw 307 extends to one side of the mounting part and is connected with a transmission gear 310. A rotating gear ring 306 is rotatably connected to the outer surface of the rod body 2. The rotating gear ring 306 is meshed and connected with a plurality of transmission gears 310. A driving motor 304 is fixedly installed on the outer periphery of the rod body 2 through a mounting plate. One end of the output shaft of the driving motor 304 is connected with a driving gear 305. One side of the driving gear 305 is meshed with one side of the rotating gear ring 306.

[0049] The implementation manner is specifically as follows: By providing the auxiliary component 3, when the drilling is completed, the driving motor 304 drives the auxiliary wheel 302 to gradually contact the drilling wall through the driving gear 305, the rotating gear ring 306, the transmission gear 310, the positive and negative lead screw 307, the lead screw seat 308, the connecting rod 309, and the moving plate 311. After that, the auxiliary motor is started, the auxiliary electrode drives the auxiliary wheel 302 to rotate, and the auxiliary wheel 302 drives the rod body 2 to move upward by the frictional force between the auxiliary wheel and the drilling wall, reducing the pulling force on the rod body 2 when taking out the rod, reducing the load on the rod body 2, and assisting the drill bit 5 to exit the hole by means of direct action at a short distance, avoiding the situation of the drill bit 5 being stuck, improving the recovery effect and efficiency of the drill bit 5. At the same time, the auxiliary wheel 302 cooperates with the telescopic rod 313 and the first spring 312 to be able to buffer and absorb when the rod body 2 contacts the drilling wall.

[0050] The adjustment component 6 includes a plurality of hydraulic push rods 603, and the plurality of hydraulic push rods 603 are arranged in a circumferential array along the axis of the rotating table 4. One end of the hydraulic push rod 603 is hinged to one side of the rotating table 4 through the first mounting seat, and the end of the hydraulic push rod 603 away from the rotating table 4 is hinged with a connecting rod 602 through the second mounting seat. The connecting rod 602 is hinged to one side of the rotating table 4 through the third mounting seat, and a steering plate 601 is connected to the side of the connecting rod 602 away from the rotating table 4. One side of the steering plate 601 is rotatably connected to the drill bit 5.

[0051] The implementation manner is specifically as follows: By providing the adjustment component 6, the hydraulic push rod 603 drives the drill bit 5 to move through the connecting rod 602 and the steering plate 601, so that the distance between the plurality of drill bits 5 can be adjusted, the outer expansion distance of the drill bits 5 is changed, and different diameters of drill holes can be drilled in cooperation with the rod body 2 to meet different construction requirements.

[0052] Working principle: During use, the staff installs and connects with external equipment through the connecting mechanism 1 and starts the drilling operation. Before that, the staff adjusts the outer expansion distance of the drill bit 5 according to the actual construction requirements. The staff drives the connecting rod 602 to move by controlling the hydraulic push rod 603, and the connecting rod 602 drives the steering plate 601 to deflect around the axis of the third mounting seat, so that the steering plate 601 drives the drill bit 5 to move, thereby adjusting the distance between the plurality of drill bits 5 and changing the outer expansion distance of the drill bits 5.

[0053] During the drilling construction process, the transmission shaft 8 drives the rotating oscillation plate 708 to rotate. The rotating oscillation plate 708 drives the conveying trough 709 to rotate. And during the rotation of the conveying trough 709, it is periodically connected to the communication trough 710, enabling the hydraulic medium to circulate periodically. Since the conveying trough 709 on the rotating oscillation plate 708 is eccentrically arranged, when the hydraulic medium flows through, an eccentric eddy current is periodically formed. Through the eccentric movement of the eddy current, the rod body 2 is driven to oscillate. At the same time, the transmission shaft 8 drives the connecting ring 703 to rotate. The connecting ring 703 drives a plurality of extrusion blocks 704 to rotate. The extrusion blocks 704 periodically drive the extrusion wheel 705 to move. And the second spring 707 can drive the extrusion wheel 705 to perform a reset movement, so that the extrusion wheel 705 performs a reciprocating movement. The extrusion wheel 705 drives the sliding rod 706 to perform a reciprocating movement. The sliding rod 706 drives the sliding tube 711 to reciprocate in the vertical direction. The sliding tube 711 drives the oscillation hammer 712 to oscillate in the vertical direction. At the same time, while the oscillation hammer 712 is oscillating, through the rapid flow trough 713, it can drive the hydraulic medium to form an oscillating flow, driving the rod body 2 to oscillate, and using the orderly oscillation of the rod body 2 itself to avoid the influence of the external environment on the rod body 2.

[0054] During the drilling process, the oscillation assembly 7 drives the rod body 2 to vibrate. The auxiliary wheel 302 cooperates with the telescopic rod 313 and the first spring 312, and can buffer and absorb when the rod body 2 contacts the drilling wall, thereby reducing the damage to the rod body 2 and improving the service life of the rod body 2. At the same time, when the drilling is completed, the drive motor 304 drives the drive gear 305 to rotate. The drive gear 305 drives the rotating gear ring 306 to rotate. The rotating gear ring 306 drives the transmission gear 310 to rotate. The transmission gear 310 drives the positive and negative lead screw 307 to rotate, and the positive and negative lead screw 307 drives the two lead screw seats 308 to move towards each other, so that the lead screw seats 308 drive the connecting rod 309 to move. The connecting rod 309 drives the moving plate 311 to move outwards, and makes the auxiliary wheel 302 gradually contact the drilling wall. And during this process, the first spring 312 gradually contracts to the limit. After that, the auxiliary motor starts. The auxiliary motor drives the auxiliary wheel 302 to rotate. The auxiliary wheel 302 drives the rod body 2 to move upwards by the frictional force between it and the drilling wall, reducing the pulling force on the rod body 2 when taking out the rod.

[0055] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A pulsed positive displacement motor, comprising a rod body (2), wherein a cavity is formed inside the rod body (2), characterized in that, An auxiliary component (3) is arranged on the outer peripheral side of the rod body (2). A transmission shaft (8) is connected inside the rod body (2) in a transmission manner. An oscillation component (7) is arranged on the outer surface of the transmission shaft (8). One end of the transmission shaft (8) extends to the outside of the rod body (2) and is connected to a rotating table (4). A drill bit (5) is arranged at the bottom of the rotating table (4) through an adjustment component (6). The oscillation component (7) includes an oscillation hammer (712) capable of reciprocating vibration. A plurality of flow grooves (713) distributed in a circumferential array are formed on the outer periphery of the oscillation hammer (712). A sliding tube (711) is connected to the top of the oscillation hammer (712). A plurality of sliding rods (706) capable of reciprocating movement are connected to the top of the sliding tube (711). A fixed partition plate (702) is rotatably connected to the outer surface of the transmission shaft (8). The fixed partition plate (702) is connected to the inner wall of the cavity. A plurality of communication grooves (710) distributed in a circumferential array are formed on the fixed partition plate (702). A rotating oscillation plate (708) is arranged on the top of the fixed partition plate (702). A conveying groove (709) is formed on one side of the top of the rotating oscillation plate (708). The rotating oscillation plate (708) drives the conveying groove (709) to rotate and cooperates with the conveying groove (709) to realize the eccentric conveying of the hydraulic medium, thereby completing the eccentric oscillation of the hydraulic medium. The auxiliary component (3) includes a protective housing (301). The protective housing (301) is connected to the outer surface of the rod body (2). A plurality of positive and negative lead screws (307) distributed in a circumferential array are arranged inside the protective housing (301). Two symmetrically arranged lead screw seats (308) are threadedly connected to the outer surface of the positive and negative lead screws (307). One side of the lead screw seat (308) is hinged to a connecting rod (309). One ends of the two connecting rods (309) far from the lead screw seat (308) are hinged to the same moving plate (311). A plurality of auxiliary wheels (302) distributed in a linear array are arranged on the side of the moving plate (311) far from the connecting rod (309). An auxiliary motor for driving is arranged on one side of the auxiliary wheel (302). The adjustment component (6) includes a plurality of hydraulic push rods (603). The plurality of hydraulic push rods (603) are distributed in a circumferential array along the axis of the rotating table (4). One end of the hydraulic push rod (603) is hinged to one side of the rotating table (4) through a first mounting seat. The end of the hydraulic push rod (603) far from the rotating table (4) is hinged to a connecting rod (602) through a second mounting seat. The connecting rod (602) is hinged to one side of the rotating table (4) through a third mounting seat. The side of the connecting rod (602) far from the rotating table (4) is connected to an alignment plate (601). One side of the alignment plate (601) is rotatably connected to the drill bit (5).

2. The pulsed positive displacement motor according to claim 1, wherein, The rotating oscillation plate (708) is connected to the outer surface of the transmission shaft (8). The bottom of the rotating oscillation plate (708) is in contact with the top of the fixed partition plate (702), and the conveying groove (709) is periodically communicated with the communication groove (710) during the rotation process.

3. The pulsed positive displacement motor according to claim 1, wherein, A plurality of the sliding rods (706) are distributed in a circumferential array along the sliding tube (711). A plurality of mounting brackets (701) distributed in a circumferential array are connected inside the cavity. The sliding rods (706) are slidably connected to the mounting brackets (701). One end of the sliding rod (706) away from the sliding tube (711) is connected with an extrusion wheel (705). A second spring (707) is sleeved on the outer surface of the sliding rod (706). Two ends of the second spring (707) are respectively connected with one side of the mounting bracket (701) and one side of the extrusion wheel (705).

4. The pulsating positive displacement motor according to claim 3, wherein, A connecting ring (703) is connected to the outer surface of the transmission shaft (8). The connecting ring (703) is located directly below the fixed partition (702). A plurality of extrusion blocks (704) distributed in a circumferential array are connected to the bottom of the connecting ring (703). The cross-sectional shape of the extrusion block (704) is semi-circular. The extrusion block (704) periodically contacts the extrusion wheel (705) during rotation. Both the sliding tube (711) and the oscillating hammer (712) are sleeved on the outer surface of the transmission shaft (8).

5. The pulse mud motor according to claim 1, characterized in that, Both ends of the positive and negative lead screw (307) are rotatably connected with mounting parts. One side of the mounting part is connected to the outer periphery of the rod body (2). The positive and negative lead screw (307) is arranged symmetrically about the central position, and the thread directions on both sides of the positive and negative lead screw (307) are opposite. A plurality of moving grooves (303) distributed in a circumferential array are formed on the outer periphery of the protective housing (301). The lead screw seat (308) is slidably connected in the moving groove (303).

6. The pulsed positive displacement motor according to claim 1, wherein, On one side of the moving plate (311) away from the connecting rod (309), a plurality of groups of telescopic rods (313) distributed in a linear array are connected. One end of the telescopic rod (313) away from the moving plate (311) is connected to one side of the auxiliary wheel (302). A first spring (312) is sleeved on the outer surface of the telescopic rod (313). Two ends of the first spring (312) are respectively connected with one side of the moving plate (311) and one side of the auxiliary wheel (302).

7. The pulsed positive displacement motor according to claim 1, wherein One end of the positive and negative lead screw (307) extends to one side of the mounting part and is connected with a transmission gear (310). A rotating toothed ring (306) is rotatably connected to the outer surface of the rod body (2). The rotating toothed ring (306) is meshed with a plurality of transmission gears (310). A driving motor (304) is fixedly installed on the outer periphery of the rod body (2) through a mounting plate. One end of the output shaft of the driving motor (304) is connected with a driving gear (305). One side of the driving gear (305) is meshed with one side of the rotating toothed ring (306).

8. The pulsed positive displacement motor according to claim 1, wherein, One end of the rod body (2) away from the rotating table (4) is connected with a connecting mechanism (1). A bypass valve, a motor assembly and a universal shaft assembly are sequentially arranged in the rod body (2) from top to bottom. One end of the universal shaft assembly is connected with the transmission shaft (8).

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