A sandblaster for oil exploration

Abstract

The present application belongs to the technical field of sand blaster equipment, and discloses a sand blaster for oil exploitation, which has the following technical points: the sand blaster comprises a sand blaster pipe, two groups of sand blaster holes are arranged on the surface of the sand blaster pipe in opposite directions, a sealing sleeve is arranged in the inner cavity of the sand blaster pipe and matched with the sand blaster holes, a flow guide pipe is fixedly installed on the surface of the sand blaster pipe, a positioning mechanism matched with the sealing sleeve is arranged on the surface of the sand blaster pipe, the positioning mechanism comprises a clamping assembly and an adjusting assembly, a flow rate adjusting mechanism is arranged in the flow guide pipe, and the flow rate adjusting mechanism comprises a flow guide plate, a supporting assembly and a control assembly. Through the cooperation of the supporting assembly and the control assembly, the relative positions of the two groups of flow guide plates can be conveniently adjusted in the flow guide pipe, and the injection speed of the fracturing fluid can be synchronously adjusted.

Description

Technical Field

[0001] This invention relates to the field of sandblasting equipment technology, specifically a sandblasting device for oil extraction. Background Technology

[0002] With the development of oil extraction technology, sandblasting equipment is being used more and more widely in fracturing operations. By spraying fracturing fluid through sandblasting equipment, fractures can be formed in the rocks of the oil layer or nearby area, which can reduce the pressure during fracturing operations and thus reduce the construction risks.

[0003] When using a sandblasting machine, the fracturing fluid is injected at a high speed, resulting in a strong impact on the sealing sleeve inside the machine. This leads to poor stability of the sealing sleeve within the machine and makes it difficult to install and remove it easily. Furthermore, during operation, the sandblasting machine directly discharges the fracturing fluid from the blasting orifice, making it impossible to adjust the injection speed and resulting in poor performance. Summary of the Invention

[0004] The purpose of this invention is to provide a sandblasting device for oil extraction to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A sandblasting device for oil extraction includes a sandblasting pipe with two sets of opposing sandblasting holes on its surface. A sealing sleeve that mates with the sandblasting holes is provided inside the sandblasting pipe. A guide pipe is fixedly installed on the surface of the sandblasting pipe and sleeved around the sandblasting holes. A positioning mechanism that mates with the sealing sleeve is provided on the surface of the sandblasting pipe. The positioning mechanism includes a snap-fit ​​component and an adjusting component. The snap-fit ​​component is located on the inner wall of the sandblasting pipe and connected to the sealing sleeve. The adjusting component is located inside the sandblasting pipe and connected to the snap-fit ​​component. The adjusting component, by mates with the snap-fit ​​component, is used to position the sandblasting pipe... The position of the inner cavity adjusting sealing sleeve is provided. A flow rate adjustment mechanism is provided inside the guide tube. The flow rate adjustment mechanism includes a guide plate, a support assembly, and a control assembly. Two sets of guide plates are provided and are relatively distributed in the inner cavity of the guide tube. The two sets of guide plates are rotatably connected to the inner top wall and inner bottom wall of the guide tube, respectively. The support assembly is located on the inner wall of the guide tube and is connected to the guide plate. The support assembly is used to control the guide plate to maintain an inclined state in the inner cavity of the guide tube. The control assembly is located on the surface of the guide tube and is connected to the support assembly. The control assembly is used to adjust the inclination of the guide plate in the inner cavity of the guide tube by cooperating with the support assembly.

[0007] As a further aspect of the present invention: the snap-fit ​​assembly includes multiple sets of snap-fit ​​blocks arranged in an annular pattern and evenly spaced, which are fixedly installed on the side wall of the sealing sleeve; multiple sets of vertical grooves that cooperate with the snap-fit ​​blocks are opened vertically downward from the highest point on the inner side wall of the sandblasting pipe; a horizontal groove is opened on the inner side wall of the sandblasting pipe; the bottom end of the horizontal groove is connected to the bottom end of the vertical groove; a limiting plate that cooperates with the snap-fit ​​blocks is provided in the horizontal groove; and the adjusting assembly is connected to the limiting plate.

[0008] As a further embodiment of the present invention: the adjustment assembly includes a receiving cavity located above the horizontal groove inside the side wall of the sandblasting pipe, a pad is slidably installed in the receiving cavity in the vertical direction, the top end of the limiting plate extends into the receiving cavity and is connected to the pad, a compression spring is fixedly installed at the top of the receiving cavity, the extension end of the compression spring is connected to the pad, a connecting rod is fixedly installed on the surface of the pad, and the top end of the connecting rod extends into the surface of the sandblasting pipe and is fixedly installed with a control block.

[0009] As a further aspect of the present invention: the support assembly includes sliding grooves respectively opened on the top wall and bottom wall of the inner side of the guide tube, a bearing block is slidably installed in the sliding groove, a push-pull rod is rotatably installed on the surface of the bearing block, and the end of the push-pull rod away from the bearing block is rotatably connected to the guide plate.

[0010] As a further aspect of the present invention: the control component includes a threaded rod rotatably mounted in a groove, the threaded rod being threadedly connected to a bearing block, a positioning gear plate being fixedly mounted at one end of the threaded rod, a fixing ring being rotatably mounted on the surface of the guide tube, a positioning gear ring being fixedly mounted on the inner sidewall of the fixing ring, the positioning gear ring being meshed with the positioning gear plate, and a limiting part being provided on the surface of the guide tube to cooperate with the fixing ring, the limiting part being used to adjust the position of the fixing ring on the surface of the guide tube.

[0011] As a further aspect of the present invention: the limiting part includes an annular telescopic groove opened on the surface of the guide tube, a control ring is slidably installed in the telescopic groove, a limiting rod is fixedly installed on the surface of the control ring, a plurality of limiting holes are opened on the side wall of the fixed ring in an annular and equally spaced manner and cooperate with the limiting rod, a return spring is fixedly installed in the telescopic groove, and the telescopic end of the return spring is connected to the control ring.

[0012] As a further embodiment of the present invention: the surface of the sealing sleeve is provided with a sealing ring that cooperates with the inner wall of the sandblasting pipe.

[0013] Compared with the prior art, the beneficial effects of this invention are: by setting the snap-fit ​​component and the adjustment component to cooperate with each other, the sealing sleeve can be easily installed and disassembled inside the sandblasting pipe cavity, and the stability of the sealing sleeve can be effectively improved. This solves the problem that the impact of fracturing fluid on the sealing sleeve inside the sandblaster is relatively severe, resulting in poor stability of the sealing sleeve inside the sandblaster and making it difficult to easily install and disassemble the sealing sleeve.

[0014] By setting up support components and control components to work together, the relative positions of the two sets of guide plates can be easily adjusted inside the guide tube, thereby synchronously adjusting the injection speed of the fracturing fluid. This solves the problem that current sandblasting machines directly discharge fracturing fluid from the sandblasting hole, making it impossible to adjust the injection speed of the fracturing fluid and resulting in poor performance. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a sandblasting device for oil extraction provided in an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the main structure of a sandblasting device for oil extraction provided in an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the guide pipe and its connection structure in a sandblasting device for oil extraction provided in an embodiment of the present invention.

[0018] Figure 4 This is a schematic internal cross-sectional view of the guide pipe in a sandblasting device for oil extraction provided in an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of a sandblasting pipe in a sandblaster used in oil extraction, provided in an embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the structure of a sealing sleeve in a sandblasting machine for oil extraction, provided in an embodiment of the present invention.

[0021] Figure 7 for Figure 2 A magnified structural diagram of A in the diagram.

[0022] Figure 8 This is a schematic diagram of a limiting plate and its connection structure in a sandblasting device for oil extraction, provided in an embodiment of the present invention.

[0023] The components are: 1-Sandblasting pipe, 11-Sandblasting hole, 2-Sealing sleeve, 3-Positioning mechanism, 31-Snap-fit ​​assembly, 311-Snap-fit ​​block, 312-Vertical groove, 313-Horizontal groove, 314-Limiting plate, 32-Adjusting assembly, 321-Receiving cavity, 322-Pad block, 323-Compression spring, 324-Connecting rod, 325-Control block, 4-Guide pipe, 5-Flow rate adjustment mechanism, 51-Guide plate, 52-Support assembly, 521-Slide groove, 522-Bearing block, 523-Push-pull rod, 53-Control assembly, 531-Threaded rod, 532-Positioning gear plate, 533-Fixing ring, 534-Positioning gear ring, 6-Limiting part, 61-Telescopic groove, 62-Reset spring, 63-Control ring, 64-Limiting hole, 65-Limiting rod, 7-Sealing ring. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0025] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0026] like Figure 1 , Figure 2 , Figure 4 The diagram shows a structure of a sandblasting device for oil extraction according to an embodiment of the present invention. It includes a sandblasting pipe 1 with two sets of opposing sandblasting holes 11 on its surface. A sealing sleeve 2, which mates with the sandblasting holes 11, is provided inside the sandblasting pipe 1. A guide pipe 4 is fixedly installed on the surface of the sandblasting pipe 1, and the guide pipe 4 is sleeved around the outside of the sandblasting holes 11. A positioning mechanism 3, which mates with the sealing sleeve 2, is provided on the surface of the sandblasting pipe 1. The positioning mechanism 3 includes a snap-fit ​​component 31 and an adjusting component 32. The snap-fit ​​component 31 is located on the inner wall of the sandblasting pipe 1 and connected to the sealing sleeve 2. The adjusting component 32 is located inside the sandblasting pipe 1 and connected to the snap-fit ​​component 31. The adjusting component 32 adjusts by engaging with the snap-fit ​​component 31. The flow rate adjustment mechanism 5 is used to adjust the position of the sealing sleeve 2 inside the sandblasting pipe 1. The flow rate adjustment mechanism 5 is provided inside the guide pipe 4. The flow rate adjustment mechanism 5 includes a guide plate 51, a support component 52 and a control component 53. Two sets of guide plates 51 are provided and are distributed relatively in the inner cavity of the guide pipe 4. The two sets of guide plates 51 are rotatably connected to the inner top wall and inner bottom wall of the guide pipe 4, respectively. The support component 52 is located on the inner wall of the guide pipe 4 and is connected to the guide plate 51. The support component 52 is used to control the guide plate 51 to maintain an inclined state in the inner cavity of the guide pipe 4. The control component 53 is located on the surface of the guide pipe 4 and is connected to the support component 52. The control component 53 is used to adjust the inclination of the guide plate 51 in the inner cavity of the guide pipe 4 by cooperating with the support component 52.

[0027] The sealing sleeve 2 can be easily installed in the inner cavity of the sandblasting pipe 1 by means of the snap-fit ​​component 31. The adjustment component 32 cooperates with the snap-fit ​​component 31 to easily fix the sealing sleeve 2 in the inner cavity of the sandblasting pipe 1. The support component 52 positions the two sets of guide plates 51 in the inner cavity of the guide pipe 4. During use, the fracturing fluid flows towards the sealing sleeve 2 within the blasting pipe 1. The fracturing fluid passes through the blasting orifice 11 and flows into the guide pipe 4, where it is then ejected between the two sets of guide plates 51. As the fracturing fluid flows, the locking assembly 31 and the adjusting assembly 32 stably fix the sealing sleeve 2 within the cavity of the blasting pipe 1, effectively preventing loosening. When the injection speed of the fracturing fluid needs adjustment, the control assembly 53 and the support assembly 52 cooperate to control the relative rotation of the two sets of guide plates 51 within the cavity of the guide pipe 4, thereby adjusting the tilt of the guide plates 51. When the gap between the two sets of guide plates 51 increases, the injection speed of the fracturing fluid in the guide pipe 4 decreases; when the gap decreases, the injection speed increases. When the sealing sleeve 2 needs replacement or maintenance, the adjusting assembly 32 and the locking assembly 31 cooperate to easily remove the sealing sleeve 2 from the cavity of the blasting pipe 1.

[0028] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 8 As shown, in a preferred embodiment of the present invention, the snap-fit ​​assembly 31 includes multiple sets of snap-fit ​​blocks 311 fixedly installed on the side wall of the sealing sleeve 2, which are distributed in an annular pattern at equal intervals. The inner side wall of the sandblasting pipe 1 has multiple sets of vertical grooves 312 that cooperate with the snap-fit ​​blocks 311, which are vertically opened from the highest point downwards. The inner side wall of the sandblasting pipe 1 has a horizontal groove 313, which is connected to the bottom end of the vertical groove 312. A limiting plate 314 that cooperates with the snap-fit ​​blocks 311 is provided in the horizontal groove 313. The adjusting assembly 32 is connected to the limiting plate 314.

[0029] When installing the sealing sleeve 2, align the snap-fit ​​block 311 on the surface of the sealing sleeve 2 with the vertical groove 312, and squeeze the sealing sleeve 2 into the sandblasting pipe 1. At this time, the snap-fit ​​block 311 slides synchronously in the vertical groove 312. When the snap-fit ​​block 311 moves to the bottom of the vertical groove 312, rotate the sealing sleeve 2 inside the sandblasting pipe 1, thereby causing the snap-fit ​​block 311 to slide from the vertical groove 312 into the horizontal groove 313. When the snap-fit ​​block 311 slides into the horizontal groove 313, the adjusting component 3... 2. Adjust the position of the limiting plate 314. The limiting plate 314 will not obstruct the sliding of the snap-fit ​​block 311. After the limiting plate 314 slides to a suitable position in the transverse groove 313, the adjusting component 32 adjusts the position of the limiting plate 314. The limiting plate 314 is located at the side wall of the snap-fit ​​block 311. The limiting plate 314 and the transverse groove 313 cooperate with each other, which can conveniently fix the snap-fit ​​block 311 in the transverse groove 313, and thus conveniently fix the sealing sleeve 2 in the inner cavity of the sandblasting pipe 1. When it is necessary to remove the sealing sleeve 2, the adjusting component 32 adjusts the position of the limiting plate 314 in the horizontal groove 313. The limiting plate 314 releases the restriction on the locking block 311 in the horizontal groove 313. The sealing sleeve 2 is controlled to rotate in the opposite direction in the sandblasting pipe 1, thereby controlling the locking block 311 to slide in the direction of the vertical groove 312 in the horizontal groove 313. When the locking block 311 slides to the bottom of the vertical groove 312, the locking block 311 moves vertically upward along the vertical groove 312, so that the sealing sleeve 2 can be easily removed from the inner cavity of the sandblasting pipe 1.

[0030] like Figure 1 , Figure 2 , Figure 5 , Figure 8 As shown, in a preferred embodiment of the present invention, the adjusting component 32 includes a receiving cavity 321 located above the transverse groove 313 and opened inside the side wall of the sandblasting pipe 1. A pad 322 is slidably installed in the receiving cavity 321 in the vertical direction. The top end of the limiting plate 314 extends into the receiving cavity 321 and is connected to the pad 322. A compression spring 323 is fixedly installed at the top of the receiving cavity 321. The telescopic end of the compression spring 323 is connected to the pad 322. A connecting rod 324 is fixedly installed on the surface of the pad 322. The top end of the connecting rod 324 extends into the surface of the sandblasting pipe 1 and is fixedly installed with a control block 325.

[0031] In use, the compression spring 323 applies a pushing force to the pad 322, which is located at the bottom of the receiving cavity 321. The pad 322 positions the limiting plate 314, which is then inserted into the horizontal groove 313. When the locking block 311 slides from the bottom of the vertical groove 312 into the horizontal groove 313, the control block 325 is pulled at the top of the sandblasting pipe 1. The control block 325 and the connecting rod 324 cooperate to pull the pad 322 vertically upward in the receiving cavity 321. The pad 322 drives the limiting plate 314 to move upward synchronously. At this time, the limiting plate 314 moves above the horizontal groove 313 and no longer obstructs the sliding of the locking block 311. After the locking block 311 moves to the other side of the limiting plate 314, the control block 325 is released, and the pad... 322 moves vertically downward under the thrust of the compression spring 323. At this time, the pad block 322 controls the limiting plate 314 to be inserted into the transverse groove 313 again. The limiting plate 314 positions the snap-fit ​​block 311 in the transverse groove 313. The limiting plate 314 can effectively prevent the snap-fit ​​block 311 from sliding in the transverse groove 313, thereby conveniently fixing the sealing sleeve 2 in the sandblasting pipe 1. When the fracturing fluid flows in the inner cavity of the sandblasting pipe 1, the snap-fit ​​block 311 and the transverse groove 313 cooperate with each other to effectively maintain the stability of the sealing sleeve 2.

[0032] like Figure 2 , Figure 4 , Figure 7 As shown, in a preferred embodiment of the present invention, the support component 52 includes a sliding groove 521 formed in the top wall and bottom wall of the inner wall of the guide tube 4. A bearing block 522 is slidably installed in the sliding groove 521. A push-pull rod 523 is rotatably installed on the surface of the bearing block 522. The end of the push-pull rod 523 away from the bearing block 522 is rotatably connected to the guide plate 51.

[0033] The control component 53 positions the support block 522 within the chute 521. The support block 522 and the push-pull rod 523 cooperate to position the guide plate 51 within the cavity of the guide pipe 4. During use, the fracturing fluid flows through the blasting hole 11 into the guide pipe 4 and is then sprayed out between the two sets of guide plates 51. When it is necessary to adjust the injection speed of the fracturing fluid, the control component 53 drives the support block 522 to move within the chute 521. The support block 522 and the push-pull rod 523 cooperate to push the guide plate 51 to rotate within the cavity of the guide pipe 4, thereby adjusting the tilt of the guide plate 51. When the gap between the two sets of guide plates 51 increases, the injection speed of the fracturing fluid in the guide pipe 4 decreases; when the gap between the two sets of guide plates 51 decreases, the injection speed of the fracturing fluid in the guide pipe 4 increases.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7As shown, in a preferred embodiment of the present invention, the control component 53 includes a threaded rod 531 rotatably mounted in a groove 521. The threaded rod 531 is threadedly connected to the bearing block 522. A positioning gear 532 is fixedly mounted at one end of the threaded rod 531. A fixing ring 533 is rotatably mounted on the surface of the guide tube 4. A positioning gear ring 534 is fixedly mounted on the inner sidewall of the fixing ring 533. The positioning gear ring 534 meshes with the positioning gear 532. A limiting part 6 is provided on the surface of the guide tube 4 to cooperate with the fixing ring 533. The limiting part 6 is used to adjust the position of the fixing ring 533 on the surface of the guide tube 4.

[0035] When the injection speed needs to be adjusted, the limiting part 6 is released from the surface of the guide tube 4 to restrict the fixed ring 533. The operator pushes the fixed ring 533 to rotate on the surface of the guide tube 4. The fixed ring 533 drives the positioning gear ring 534 to rotate synchronously. The positioning gear ring 534 meshes with the positioning gear disc 532, which can drive the threaded rod 531 to rotate in the slide groove 521. The threaded rod 531 pushes the bearing block 522 to slide in the slide groove 521. When the guide plate 51 rotates to a suitable tilt angle, the limiting part 6 fixes the position of the fixed ring 533 on the surface of the guide tube 4.

[0036] like Figure 1 , Figure 3 , Figure 7 As shown, in a preferred embodiment of the present invention, the limiting part 6 includes an annular telescopic groove 61 opened on the surface of the guide tube 4. A control ring 63 is slidably installed in the telescopic groove 61. A limiting rod 65 is fixedly installed on the surface of the control ring 63. A plurality of limiting holes 64 are opened on the side wall of the fixed ring 533, which are distributed in an annular shape at equal intervals and cooperate with the limiting rod 65. A return spring 62 is fixedly installed in the telescopic groove 61. The telescopic end of the return spring 62 is connected to the control ring 63.

[0037] Initially, the return spring 62 applies a pushing force to the control ring 63 within the telescopic groove 61. The limiting rod 65 on the surface of the control ring 63 is inserted into the limiting hole 64 on the surface of the fixed ring 533. The limiting rod 65 and the limiting hole 64 cooperate with each other to fix the position of the fixed ring 533 on the surface of the guide tube 4. When adjustment is required, the control ring 63 is pushed to move within the telescopic groove 61, thereby causing the limiting rod 65 to separate from the limiting hole 64. At this time, the fixed ring 533 can be easily pushed to rotate on the surface of the guide tube 4.

[0038] like Figure 5 , Figure 6 As shown, in a preferred embodiment of the present invention, the surface of the sealing sleeve 2 is provided with a sealing ring 7 that cooperates with the inner wall of the sandblasting pipe 1.

[0039] The working principle of this invention is as follows: When installing the sealing sleeve 2, the snap-fit ​​block 311 on the surface of the sealing sleeve 2 is aligned with the vertical groove 312, and the sealing sleeve 2 is squeezed into the sandblasting pipe 1. At this time, the snap-fit ​​block 311 slides synchronously in the vertical groove 312. When the snap-fit ​​block 311 moves to the bottom of the vertical groove 312, the sealing sleeve 2 is rotated in the inner cavity of the sandblasting pipe 1, thereby causing the snap-fit ​​block 311 to slide from the vertical groove 312 into the horizontal groove 313. When the snap-fit ​​block 311 slides into the horizontal groove 313, the control block 325 is pulled at the top of the sandblasting pipe 1. The control block 325 and the connecting rod 324 cooperate to pull the pad block 322 to move vertically upward in the receiving cavity 321. The pad block 322 drives the limiting plate 314 to move upward synchronously. At this time, the limiting plate 314 moves above the transverse groove 313 and thus does not obstruct the sliding of the locking block 311. After the locking block 311 moves to the other side of the limiting plate 314, the control block 325 is released, and the pad block 322 moves vertically downward under the thrust of the compression spring 323. At this time, the pad block 322 controls the limiting plate 314 to be inserted into the transverse groove 313 again. The limiting plate 314 positions the locking block 311 in the transverse groove 313. The limiting plate 314 can effectively prevent the locking block 311 from sliding in the transverse groove 313, and thus can conveniently fix the sealing sleeve 2 in the sandblasting pipe 1. When the fracturing fluid flows in the inner cavity of the sandblasting pipe 1, the locking block 311 and the transverse groove 313 cooperate with each other to effectively maintain the stability of the sealing sleeve 2.

[0040] During use, the fracturing fluid flows in the direction of the sealing sleeve 2 inside the sandblasting pipe 1, and flows through the sandblasting hole 11 into the guide pipe 4 and is then sprayed out between the two sets of guide plates 51. When the injection velocity of the fracturing fluid needs to be adjusted, the limiting part 6 is released from restricting the fixing ring 533 on the surface of the guide tube 4. The operator pushes the fixing ring 533 to rotate on the surface of the guide tube 4. The fixing ring 533 drives the positioning gear ring 534 to rotate synchronously. The positioning gear ring 534 meshes with the positioning gear disc 532, which can drive the threaded rod 531 to rotate in the slide groove 521. The threaded rod 531 pushes the bearing block 522 to slide in the slide groove 521. The bearing block 522 cooperates with the push-pull rod 523 to push the guide plate 51 to rotate in the inner cavity of the guide tube 4, thereby adjusting the tilt of the guide plate 51. When the gap between the two sets of guide plates 51 increases, the injection velocity of the fracturing fluid in the guide tube 4 decreases. When the gap between the two sets of guide plates 51 decreases, the injection velocity of the fracturing fluid in the guide tube 4 increases. After the guide plate 51 rotates to a suitable tilt angle, the limiting part 6 fixes the position of the fixing ring 533 on the surface of the guide tube 4.

[0041] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An oil exploitation sand blaster comprising a sand blaster pipe, the surface of which is provided with two groups of sand blaster holes oppositely distributed, and the inner cavity of the sand blaster pipe is provided with a sealing sleeve matched with the sand blaster holes, characterized in that, The surface of the sand blasting pipe is fixedly provided with a flow guide pipe which is sleeved outside the sand blasting hole; The surface of the sand blasting pipe is provided with a positioning mechanism which cooperates with the sealing sleeve, and the positioning mechanism comprises a clamping assembly and an adjusting assembly; The clamping assembly is located on the inner side wall of the sand blasting pipe and connected with the sealing sleeve, and the adjusting assembly is located in the sand blasting pipe and connected with the clamping assembly. The adjusting assembly is used to adjust the position of the sealing sleeve in the inner cavity of the sand blasting pipe by cooperating with the clamping assembly. The clamping assembly comprises a plurality of clamping blocks which are annularly and equally spaced and fixedly installed on the side wall of the sealing sleeve. A plurality of vertical grooves which cooperate with the clamping blocks are vertically opened downward from the highest point of the inner side wall of the sand blasting pipe. A horizontal groove is opened in the inner side wall of the sand blasting pipe and is in communication with the bottom end of the vertical groove. A limiting plate which cooperates with the clamping blocks is arranged in the horizontal groove. The adjusting assembly is connected with the limiting plate. The adjusting assembly comprises a receiving cavity which is opened in the inner side wall of the sand blasting pipe and is located above the horizontal groove. A pad is vertically and slidingly installed in the receiving cavity. The top end of the limiting plate extends into the receiving cavity and is connected with the pad. An extrusion spring is fixedly installed at the top of the receiving cavity. The extension end of the extrusion spring is connected with the pad. A connecting rod is fixedly installed on the surface of the pad. The top end of the connecting rod extends to the surface of the sand blasting pipe and is fixedly installed with a control block. A flow rate adjusting mechanism is arranged in the flow guide pipe. The flow rate adjusting mechanism comprises a flow guide plate, a supporting assembly and a control assembly. The flow guide plate is provided with two groups and is oppositely distributed in the inner cavity of the flow guide pipe. The two groups of flow guide plates are respectively rotationally connected with the inner top wall and the inner bottom wall of the flow guide pipe. The supporting assembly is located on the inner wall of the flow guide pipe and is connected with the flow guide plate. The supporting assembly is used to control the flow guide plate to keep an inclined state in the inner cavity of the flow guide pipe. The supporting assembly comprises a sliding groove which is opened in the inner top wall and the inner bottom wall of the flow guide pipe. A bearing block is slidingly installed in the sliding groove. A push-pull rod is rotationally installed on the surface of the bearing block. One end of the push-pull rod which is away from the bearing block is rotationally connected with the flow guide plate. The control assembly is located on the surface of the flow guide pipe and is connected with the supporting assembly. The control assembly is used to adjust the inclination amplitude of the flow guide plate in the inner cavity of the flow guide pipe by cooperating with the supporting assembly.

2. A sandblaster for use in the oil industry according to claim 1, characterised in that The control assembly comprises a threaded rod which is rotationally installed in the sliding groove. The threaded rod is threadedly connected with the bearing block. One end of the threaded rod is fixedly installed with a positioning gear. A fixed ring is rotationally installed on the surface of the flow guide pipe. The inner side wall of the fixed ring is fixedly installed with a positioning gear ring. The positioning gear ring is meshingly connected with the positioning gear. The surface of the flow guide pipe is provided with a limiting portion which cooperates with the fixed ring. The limiting portion is used to adjust the position of the fixed ring on the surface of the flow guide pipe.

3. A sandblaster for use in the oil industry as claimed in claim 2, characterised in that, The limiting portion comprises an annular expansion groove which is opened on the surface of the flow guide pipe. A control ring is slidingly installed in the expansion groove. A limiting rod is fixedly installed on the surface of the control ring. A plurality of limiting holes which are annularly and equally spaced and cooperate with the limiting rod are opened in the side wall of the fixed ring. A return spring is fixedly installed in the expansion groove. The extension end of the return spring is connected with the control ring.

4. A sandblaster for use in the oil industry as claimed in claim 1, characterised in that, The sealing sleeve surface is provided with a sealing ring matched with the inner side wall of the sand blasting pipe.

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