A continuous wave mud pulse generator for oil drilling

Abstract

The present invention discloses a continuous wave mud pulse generator for oil drilling, and relates to the technical field of measurement while drilling tools for oil drilling. The continuous wave mud pulse generator for oil drilling provided by the present invention has a rotating tube fixedly connected to the middle of a rotor disk, spiral grooves are provided at both ends of the outer side of the rotating tube, and a climbing rod is fixedly connected to the bottom of the stator plug, and the climbing rod is slidably connected to the spiral slope of the spiral groove. During the rotation of the rotor disk, the climbing rod is lifted up by the spiral groove on the rotating tube, so that the stator plug rises away from the rotor disk during the interlacing of the flow holes on the rotor disk and the flow grooves on the stator plug, effectively increasing the flow space of the mud, thereby effectively increasing the fluctuation of the mud pressure pulse, and facilitating the collection of pulse data.

Description

Technical Field

[0001] The invention relates to the technical field of measurement while drilling tools for oil drilling, in particular to the technical field of mud pulse generators, and more specifically to a continuous wave mud pulse generator for oil drilling. Background Art

[0002] In deep hole drilling for the exploration and extraction of crude oil and natural gas, "rotary" drilling technology has become a generally accepted practice. The rotation and compression of the drill bit causes the formation to be drilled to be crushed and pulverized in turn. The mud pulse generator is the core part of the measurement while drilling. The pulse generator generates pressure pulses and transmits the pressure pulses through the drilling fluid column in the drill string to one or more sensors connected to the pressure-sensitive sensor, and then to the computing device located on the ground. The advantage of the continuous wave mud pulse generator is the fast transmission speed, which is one of the key technologies currently under development.

[0003] The existing mud pulse generator is fixed in the center of the drill collar, and the rotor is driven by a motor. The stator and the rotor are combined into a shut-off valve. There are flow holes on the stator and the rotor. When the flow holes coincide, the local resistance at the shut-off valve is the smallest; when the flow holes are staggered, the local resistance at the shut-off valve increases accordingly with the staggered angle. When the mud flows, the change in the local resistance at the shut-off valve is eventually reflected in the change in the wellhead pressure of the drilling fluid, and a pulse is obtained. The ground equipment measures the wellhead pressure, and after filtering and decoding, the data sent downhole is obtained.

[0004] The flow holes on the stator and rotor of the existing pulse generator, during the offset process, the space through which the flow holes can pass mainly changes from small to large or from large to small, and the change process is relatively linear, which causes the detected mud pressure pulse fluctuations to not change significantly, affecting the data collection effect. Summary of the invention

[0005] In order to overcome the defects and deficiencies in the above-mentioned prior art, the present invention provides a continuous wave mud pulse generator for oil drilling. The purpose of the present invention is to solve the problem that the fluctuation of mud pressure pulses generated by the existing pulse generator is not obvious enough, which affects the data acquisition effect. The continuous wave mud pulse generator for oil drilling provided by the present invention has a rotating tube fixedly connected to the middle of the rotor disk, spiral grooves are provided at both ends of the outer side of the rotating tube, and a climbing rod is fixedly connected to the bottom of the stator plug, and the climbing rod is slidably connected to the spiral slope of the spiral groove. During the rotation of the rotor disk, the climbing rod is lifted up by the spiral groove on the rotating tube, so that the stator plug rises away from the rotor disk during the interlacing of the flow holes on the rotor disk and the flow grooves on the stator plug, effectively increasing the flow space of the mud, and then effectively increasing the fluctuation of the mud pressure pulse, which is convenient for the collection of pulse data.

[0006] In order to solve the above problems existing in the prior art, the present invention is implemented through the following technical solutions.

[0007] The invention provides a continuous wave mud pulse generator for oil drilling, comprising an outer cylinder, a plug pump probe tube is fixedly connected inside the outer cylinder, a motor is fixedly connected to the top of the plug pump probe tube, a rotor disk is fixedly connected to the output end of the motor, a stator ring is fixedly connected to the inner wall of the top of the outer cylinder, a stator plug is sleeved in the middle of the stator ring, and the stator plug can be axially moved relative to the stator ring to set a displacement; the upper surface of the rotor disk is rotationally corresponding to the lower surface of the stator plug, the rotor disk is provided with a flow hole, the stator plug is provided with a flow groove, and the flow groove corresponds to the flow hole; the middle of the rotor disk is fixedly connected to a rotating tube, a spiral slope groove is provided on the end of the rotating tube, and a climbing rod that slides with the spiral slope surface of the spiral slope groove is fixedly connected to the bottom of the stator plug.

[0008] In the above-mentioned continuous wave mud pulse generator for oil drilling, the rotor disc rotates, and the climbing rod is lifted by the spiral groove on the rotating tube, so that the stator plug rises away from the rotor disc during the interlacing of the flow hole and the flow groove, effectively increasing the flow space of the mud, thereby effectively increasing the fluctuation of the mud pressure pulse, and facilitating the collection of pulse data. The axial depth of the spiral groove limits the displacement of the stator plug being lifted.

[0009] Further preferably, a positioning groove is provided on the top outer ring of the stator plug, a positioning piece is fixedly connected to the top of the stator ring, and the bottom of the positioning piece is inserted into the positioning groove. By connecting the positioning piece to the positioning groove, the lifting movement of the stator plug is guided, and the self-rotation of the stator plug is effectively avoided.

[0010] More preferably, the top of the stator plug is conical, the top of the positioning piece is inclined corresponding to the conical surface of the stator plug, and the tops of the plurality of positioning pieces are fixedly connected to each other. The conical stator plug is easy to move upward, and the positioning piece is fixedly connected to close the top of the stator plug, effectively preventing the stator plug from falling off.

[0011] Further preferably, the outer ring of the lower surface of the stator plug is provided with a groove, the groove is arranged at the position between two adjacent flow slots on the stator plug, two closing blocks are arranged opposite to each other and can be relatively opened and closed, and the outer ends of the two closing blocks extend into the space between the two flow slots and the flow hole adjacent to the position. The closing blocks are used to increase the shielding area of ​​the lower surface of the stator plug between the two adjacent flow slots (the two closing blocks are relatively separated, the shielding area is increased, and the two closing blocks are close to each other, the shielding area of ​​the lower surface of the stator plug is reduced), effectively improving the flow limiting effect of the flow hole (the area of ​​the flow hole can be increased).

[0012] More preferably, the closing block is slidably assembled in the groove, so that the closing block can slide in the groove and realize the telescopic movement of the closing block.

[0013] More preferably, a slide groove is provided in the groove, and a protrusion on the closing block forms a slider that cooperates with the slide groove. The slide groove not only plays a sliding guiding role but also plays a sliding limiting role for the closing block, thereby limiting the sliding displacement of the closing block and preventing the closing block from excessively sliding out of the groove or falling off.

[0014] More preferably, the slide groove is arranged in an arc shape. The arc-shaped slide groove makes the movement track of the closing block arc-shaped, which corresponds to the distribution law of the flow holes on the rotor disk, and effectively improves the flow limiting effect of the flow holes.

[0015] More preferably, a vertical rod is hinged in the middle of the groove, and a connecting shaft is hinged between the middle of the vertical rod and the inner ends of the two oppositely arranged closing blocks. When the stator plug is lifted, the vertical rod swings down, pulling the connecting shaft to achieve the two closing blocks to move towards each other and shrink; when the stator plug is close to the rotor disk, the vertical rod swings up, driving the connecting shaft to push the closing blocks toward the two outer ends, thereby achieving the relative movement of the two closing blocks away from each other.

[0016] More preferably, the two closing blocks in the groove are symmetrically arranged about the vertical rod, and the top of the outer end of the closing block is arranged in an inclined surface, so as to facilitate the synchronous movement of the two closing blocks, and the descending mud squeezes the outer end inclined surface of the closing block, so as to facilitate the automatic contraction of the closing block.

[0017] More preferably, the end of the vertical rod away from the groove is fixedly connected to an end ball, and the end ball is slidably connected to the outer ring of the rotor disk. When the vertical rod is turned over and drooped, the end ball always contacts the rotor disk, and the end ball is used to improve the sliding effect of the vertical rod on the rotor disk.

[0018] More preferably, the outer ring surface of the rotor disk is provided with a guide ball groove, the end ball is slidably connected to the guide ball groove, and the guide ball groove is arranged in a wave ring shape. The end ball slides in the guide ball groove to achieve limited guidance of the end ball, effectively improving the drooping stability of the vertical rod.

[0019] More preferably, the end ball is coated with a magnet block inside, and the magnet block is adsorbed and corresponds to the guide ball groove. The magnet block is used to adsorb the guide ball groove, so as to effectively prevent the end ball from falling out of the guide ball groove.

[0020] In summary, when the pulse generator is in use, the rotor disk and the stator plug are in close contact. At this time, the flow holes and the flow slots are staggered and shielded, the resistance to mud flow increases, and the corresponding wellhead pressure measured by the ground equipment also increases. In the subsequent rotation of the rotor disk, the climbing rod is lifted up by the spiral slope groove on the rotating tube to achieve the change of the flow hole and the flow slot to the overlapping state. At the same time, the stator plug rises away from the rotor disk, so as to quickly increase the flow space of the mud, and then the resistance to mud flow is greatly reduced, and the corresponding wellhead pressure measured by the ground equipment is quickly reduced, which effectively increases the fluctuation amplitude of the mud pressure pulse and facilitates the collection of pulse data.

[0021] Compared with the prior art, the beneficial technical effects brought by the present invention are as follows:

[0022] When the pulse generator is in use, the rotor disk and the stator plug are in close contact. At this time, the flow holes and the flow grooves are staggered and shielded, the resistance to mud flow increases, and the corresponding wellhead pressure measured by the ground equipment also increases. Later, during the rotation of the rotor disk, the climbing rod is lifted up by the spiral slope groove on the rotating tube to achieve the change of the flow hole and the flow groove to the overlapping state. At the same time, the stator plug rises away from the rotor disk, so as to quickly increase the flow space of the mud, and then the resistance to mud flow is greatly reduced, and the corresponding wellhead pressure measured by the ground equipment is quickly reduced, which effectively increases the fluctuation amplitude of the mud pressure pulse and facilitates the collection of pulse data. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional structural diagram of the continuous wave mud pulse generator of the present invention;

[0025] Figure 2 An exploded view of a rotor disk and a stator plug in a continuous wave mud pulse generator of the present invention;

[0026] Figure 3 It is a three-dimensional structural diagram of the rotor disk and the stator plug in the continuous wave mud pulse generator of the present invention;

[0027] Figure 4 It is a bottom-up stereoscopic structural diagram of a stator plug in the continuous wave mud pulse generator of the present invention;

[0028] Figure 5 It is a demonstration diagram of the staggered shielding state of the flow holes and the flow slots in the continuous wave mud pulse generator of the present invention;

[0029] Figure 6 It is a demonstration diagram of the overlapping and connected state of the flow hole and the flow slot in the continuous wave mud pulse generator of the present invention;

[0030] Figure 7 It is a three-dimensional diagram of the plugging state of the middle positioning groove and the positioning piece of the continuous wave mud pulse generator of the present invention;

[0031] Figure 8 It is a three-dimensional structural diagram of the stator ring and the positioning plate in the continuous wave mud pulse generator of the present invention;

[0032] Fig. 9 It is a three-dimensional structural diagram of the rotor disk in the continuous wave mud pulse generator of the present invention;

[0033] Fig.10 It is a three-dimensional structural diagram of the middle closing block, vertical rod and connecting shaft of the continuous wave mud pulse generator of the present invention;

[0034] Figure numerals: 1, outer cylinder, 101, pump probe, 102, motor, 2, rotor disk, 201, flow hole, 202, rotating tube, 203, spiral slope groove, 3, stator ring, 301, stator plug, 302, flow groove, 303, climbing rod, 304, positioning groove, 305, positioning plate, 4, groove, 401, slide groove, 402, closing block, 403, vertical rod; 404, connecting shaft, 405, slider, 5, end ball, 501, guide ball groove, 502, magnet block. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0036] Example 1

[0037] As a preferred embodiment of the present invention, refer to the attached specification Figure 1 , Attachment Figure 2 and attached Figure 4As shown, this embodiment discloses a continuous wave mud pulse generator for oil drilling, including an outer tube 1, a plug pump probe 101 is fixedly connected inside the outer tube 1, a motor 102 is fixedly connected to the top of the plug pump probe 101, a rotor disk 2 is fixedly connected to the output end of the motor 102, a stator ring 3 is fixedly connected to the inner wall of the top of the outer tube 1, a stator plug 301 is sleeved in the middle of the stator ring 3, and the stator plug 301 can be axially moved relative to the stator ring 3 to a set displacement; the upper surface of the rotor disk 2 is rotationally corresponding to the lower surface of the stator plug 301, the rotor disk 2 is provided with a flow hole 201, the stator plug 301 is provided with a flow groove 302, and the flow groove 302 corresponds to the flow hole 201; the middle of the rotor disk 2 is fixedly connected to a rotating tube 202, the end of the rotating tube 202 is provided with a spiral slope groove 203, and the bottom of the stator plug 301 is fixedly connected to a climbing rod 303 that slides with the spiral slope surface of the spiral slope groove 203.

[0038] When the mud pulse generator is working, refer to the instruction manual. Figure 1 As shown, the slurry is fed from top to bottom along the outer cylinder 1. Initially, the rotor disk 2 and the stator plug 301 are in a close contact state. Figure 5 As shown, at this time, the flow hole 201 and the flow groove 302 are staggered and shielded, the resistance of mud flow increases, and the corresponding wellhead pressure measured by the surface equipment also increases. In the subsequent rotation process of the rotor disk 2, the spiral slope groove 203 on the rotating tube 202 is used to lift the climbing rod 303, so that the flow hole 201 and the flow groove 302 change to the overlapping state, as shown in the attached figure. Figure 6 As shown, at the same time, the stator plug 301 rises away from the rotor disk 2, so as to quickly increase the flow space of the mud, thereby greatly reducing the resistance to the mud flow, and the corresponding wellhead pressure measured by the ground equipment is also reduced, and a mud pulse is obtained. The fluctuation range of the mud pressure pulse is large, which is convenient for the collection of pulse data.

[0039] Example 2

[0040] As another preferred embodiment of the present invention, this embodiment is a further detailed supplement and elaboration of the technical solution of the present invention on the basis of Embodiment 1.

[0041] As an implementation method of this embodiment, refer to the attached Figure 7 and attached Figure 8 As shown, a positioning groove 304 is provided on the top outer ring of the stator plug 301, a positioning piece 305 is fixedly connected to the top of the stator ring 3, and the bottom of the positioning piece 305 is inserted into the positioning groove 304. By connecting the positioning piece 305 to the positioning groove 304, the lifting movement of the stator plug 301 is guided, and the self-rotation of the stator plug 301 is effectively prevented.

[0042] As an example of this embodiment, refer to the attached Figure 3As shown, the top of the stator plug 301 is set in a conical shape. Figure 7 and attached Figure 8 As shown, the top of the positioning piece 305 is inclined to correspond to the conical surface of the stator plug 301, and the tops of multiple positioning pieces 305 are fixedly connected to each other. The conical stator plug 301 is easy to move upward, and the positioning piece 305 is fixedly connected to close the top of the stator plug 301, effectively preventing the stator plug 301 from falling off.

[0043] When the stator plug 301 moves upward, the insertion of the positioning piece 305 and the positioning groove 304 is used as a guide to effectively improve the stability of the stator plug 301 when it rises, and at the same time avoid rotation of the stator plug 301 during the rising process. The conical stator plug 301 reduces the resistance during the rise, and the tops of multiple positioning pieces 305 are fixedly connected to close the top of the stator plug 301 and prevent the stator plug 301 from detaching.

[0044] As another implementation of this embodiment, a guide groove is provided on the outer edge of the stator plug 301, and a guide limiting column is provided on the inner edge of the stator ring 3. The guide limiting column is embedded in the guide groove. The stator plug 301 is limited by the guide limiting column, and the stator plug 301 is placed to rotate, so that the stator plug 301 can move axially relative to the stator ring 3 without self-rotation. Furthermore, a limiting step is provided at the top of the guide limiting column to prevent the stator plug 301 from detaching from the stator ring 3. The limiting step at the top of the guide limiting column limits the axial movement of the stator plug 301 and prevents the stator plug 301 from detaching from the stator ring 3.

[0045] Example 3

[0046] As another preferred embodiment of the present invention, this embodiment further supplements and elaborates on the technical solution of the present invention on the basis of the above-mentioned embodiment 1 or embodiment 2. Compared with embodiment 1 or embodiment 2, this embodiment mainly adds a closing block, and the specific newly added structure is as follows, and the rest of the structure is consistent with the implementation structure of the above-mentioned embodiment 1 or embodiment 2.

[0047] In this embodiment, as an implementation method of this embodiment, refer to the attached specification. Figure 4 and attached Fig.10As shown, the outer ring of the lower surface of the stator plug 301 is provided with a groove 4, which is arranged at the position between two adjacent flow slots 302 on the stator plug 301. Two closing blocks 402 are arranged opposite to each other and can be opened and closed relatively. The outer ends of the two closing blocks 402 extend between the two flow slots 302 adjacent to the position and the flow hole 201. The closing blocks 402 are used to increase the shielding area of ​​the lower surface of the stator plug 301 between the two adjacent flow slots 302 (the two closing blocks 402 are relatively separated, the shielding area is increased, and the two closing blocks 402 are close to each other, the shielding area of ​​the lower surface of the stator plug 301 is reduced), effectively improving the flow limiting effect of the flow hole 201 (the area of ​​the flow hole 201 can be increased).

[0048] Compared with the above-mentioned embodiment 1 or embodiment 2, this embodiment sets a closing block 402 in the groove 4, and the outer end of the closing block 402 extends between the flow groove 302 and the flow hole 201, thereby effectively improving the closing effect when the flow hole 201 and the flow groove 302 are staggered and shielded, thereby effectively improving the flow limiting effect of the flow hole 201, and at the same time facilitating the opening of a flow hole 201 with a larger inner diameter.

[0049] As an example of this embodiment, refer to the attached Figure 4 As shown, the closing block 402 is slidably assembled in the groove 4. It is convenient for the closing block 402 to slide in the groove 4 to achieve the telescopic movement of the closing block 402. A slide groove 401 is provided in the groove 4, and a slider 405 is formed on the closing block 402 to cooperate with the slide groove 401. The setting of the slide groove 401 plays a sliding guide role and a sliding limit role for the closing block 402, limiting the sliding displacement of the closing block 402 and preventing the closing block 402 from sliding out of the groove 4 excessively or falling off.

[0050] Furthermore, the slide groove 401 is arranged in an arc shape, so that the movement track of the closing block 402 is an arc shape, which corresponds to the distribution law of the flow holes 201 on the rotor disk 2 and effectively improves the flow limiting effect of the flow holes 201 .

[0051] Example 4

[0052] As another preferred embodiment of the present invention, this embodiment further supplements and elaborates on the technical solution of the present invention on the basis of the above-mentioned embodiment 3.

[0053] In this embodiment, as a preferred embodiment of the present invention, refer to the attached Figure 4 and attached Fig.10As shown, a vertical rod 403 is hinged in the middle of the groove 4, and a connecting shaft 404 is hinged between the middle of the vertical rod 403 and the inner ends of the two oppositely arranged closing blocks 402. When the stator plug 301 is lifted, the vertical rod 403 swings down, pulling the connecting shaft 404, so that the two closing blocks 402 move towards each other and shrink; when the stator plug 301 is close to the rotor disk 2, the vertical rod 403 swings up, driving the connecting shaft 404 to push the closing blocks 402 toward the two outer ends, so that the two closing blocks 402 move away from each other.

[0054] In this embodiment, compared with the embodiments of Example 1 or Example 2, when the stator plug 301 rises and moves away from the rotor disk 2, the distance between the stator plug 301 and the rotor disk 2 increases, and the vertical rod 403 flips and droops, and the connecting shaft 404 is used to pull the two closing blocks 402 to move toward each other and shrink, so that the two closing blocks 402 retract into the groove 4, thereby increasing the flow space of the flow groove 302 and reducing the flow resistance of the mud.

[0055] Furthermore, the two closing blocks 402 in the groove 4 are symmetrically arranged about the vertical rod 403, and the top of the outer end of the closing block 402 is arranged in an inclined surface, which is convenient for the synchronous movement of the two closing blocks 402, and the descending mud squeezes the outer end inclined surface of the closing block 402, which is convenient for the automatic contraction of the closing block 402.

[0056] Example 5

[0057] As another preferred embodiment of the present invention, this embodiment further supplements and elaborates on the technical solution of the present invention on the basis of the above-mentioned embodiment 4.

[0058] In this embodiment, refer to the attached manual Fig.10 As shown, the end of the vertical rod 403 away from the groove 4 is fixedly connected to the end ball 5, and the end ball 5 is slidably connected to the outer ring of the rotor disk 2. When the vertical rod 403 turns over and droops, the end ball 5 always contacts the rotor disk 2, and the end ball 5 is used to improve the sliding effect of the vertical rod 403 on the rotor disk 2. The end ball 5 increases the deadweight of the outer end of the vertical rod 403, so that it can rely on its own weight to achieve drooping and swinging, and is correspondingly more sensitive.

[0059] Further preferred embodiments are described in the attached specification. Fig. 9 As shown, the outer ring surface of the rotor disk 2 is provided with a guide ball groove 501, and the end ball 5 is slidably connected with the guide ball groove 501, and the guide ball groove 501 is arranged in a wave ring shape. The end ball 5 slides in the guide ball groove 501 to achieve limited guidance of the end ball 5, effectively improving the drooping stability of the vertical rod 403.

[0060] Further preferred embodiment, refer to the attached specification Fig.10As shown, the end ball 5 is coated with a magnet block 502 inside, and the magnet block 502 is adsorbed and corresponds to the guide ball groove 501. The magnet block 502 is used to adsorb the guide ball groove 501, which effectively prevents the end ball 5 from being separated from the guide ball groove 501.

[0061] In this embodiment, the end ball 5 is used to slide in the guide ball groove 501 to effectively reduce the wear of the vertical rod 403. At the same time, the adsorption capacity of the magnet block 502 is used to effectively prevent the end ball 5 from escaping from the guide ball groove 501, thereby achieving the sliding stability of the vertical rod 403.

[0062] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

[0063] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A continuous wave mud pulse generator for oil drilling, Features: The invention comprises an outer cylinder (1), wherein a plug pump probe (101) is fixedly connected to the interior of the outer cylinder (1), a motor (102) is fixedly connected to the top of the plug pump probe (101), a rotor disk (2) is fixedly connected to the output end of the motor (102), a stator ring (3) is fixedly connected to the inner wall of the top of the outer cylinder (1), a stator plug (301) is sleeved in the middle of the stator ring (3), and the stator plug (301) can be axially moved relative to the stator ring (3) to a set displacement; the upper surface of the rotor disk (2) is in contact with the stator plug (301), and the stator plug (301) is fixedly connected to the stator ring (3). The rotor disk (2) is provided with a flow hole (201), and the stator plug (301) is provided with a flow groove (302), and the flow groove (302) corresponds to the flow hole (201); the middle of the rotor disk (2) is fixedly connected with a rotating tube (202), and the end of the rotating tube (202) is provided with a spiral slope groove (203), and the bottom of the stator plug (301) is fixedly connected with a climbing rod (303) that is slidably matched with the spiral slope surface of the spiral slope groove (203).

2. A continuous wave mud pulse generator for oil drilling as claimed in claim 1, Features: The top outer ring of the stator plug (301) is provided with a positioning groove (304), the top of the stator ring (3) is fixedly connected with a positioning piece (305), and the bottom of the positioning piece (305) is inserted into the positioning groove (304).

3. A continuous wave mud pulse generator for oil drilling as claimed in claim 2, Features: The top end of the stator plug (301) is arranged in a conical shape, the top end of the positioning piece (305) is arranged in an inclined manner corresponding to the conical surface of the stator plug (301), and the top ends of the plurality of positioning pieces (305) are fixedly connected to each other.

4. A continuous wave mud pulse generator for oil drilling according to any one of claims 1 to 3, Features: The outer ring of the lower surface of the stator plug (301) is provided with a groove (4), the groove (4) being arranged at a position between two adjacent flow slots (302) on the stator plug (301), and two closing blocks (402) arranged opposite to each other and capable of opening and closing relative to each other are mounted in the groove (4), and the outer ends of the two closing blocks (402) extend between the two flow slots (302) adjacent to the position and the flow hole (201).

5. A continuous wave mud pulse generator for oil drilling as claimed in claim 4, Features: The closing block (402) is slidably assembled in the groove (4).

6. A continuous wave mud pulse generator for oil drilling as claimed in claim 4, Features: A slide groove (401) is provided in the groove (4), and a protrusion on the closing block (402) forms a sliding block (405) that cooperates with the slide groove (401).

7. A continuous wave mud pulse generator for oil drilling as claimed in claim 6, Features: The sliding groove (401) is arranged in an arc shape.

8. A continuous wave mud pulse generator for oil drilling as claimed in claim 4, Features: A vertical rod (403) is hingedly connected in the middle of the groove (4), and a connecting shaft (404) is hingedly connected between the middle of the vertical rod (403) and the inner ends of two oppositely arranged closing blocks (402). When the stator plug (301) is lifted, the vertical rod (403) swings down, pulling the connecting shaft (404) to achieve the two closing blocks (402) to move towards each other and shrink; when the stator plug (301) approaches the rotor disk (2), the vertical rod (403) swings up, driving the connecting shaft (404) to push the closing blocks (402) toward the two outer ends, to achieve the two closing blocks (402) to move away from each other.

9. A continuous wave mud pulse generator for oil drilling as claimed in claim 8, Features: The two closing blocks (402) in the groove (4) are symmetrically arranged with respect to the vertical rod (403), and the top of the outer end of the closing block (402) is arranged in an inclined surface.

10. A continuous wave mud pulse generator for oil drilling as claimed in claim 8, Features: An end of the vertical rod (403) away from the groove (4) is fixedly connected to an end ball (5), and the end ball (5) is slidably connected to the outer ring of the rotor disk (2).

11. A continuous wave mud pulse generator for oil drilling as claimed in claim 10, Features: A guide ball groove (501) is provided on the outer ring surface of the rotor disk (2), the end ball (5) is slidably connected to the guide ball groove (501), and the guide ball groove (501) is arranged in a wave ring shape.

12. A continuous wave mud pulse generator for oil drilling as claimed in claim 11, Features: The interior of the end ball (5) is coated with a magnet block (502), and the magnet block (502) is adsorbed and corresponds to the guide ball groove (501).

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