CN108798521B - Reciprocating axial impact pressurizing device - Google Patents
Reciprocating axial impact pressurizing device Download PDFInfo
- Publication number
- CN108798521B CN108798521B CN201810891913.5A CN201810891913A CN108798521B CN 108798521 B CN108798521 B CN 108798521B CN 201810891913 A CN201810891913 A CN 201810891913A CN 108798521 B CN108798521 B CN 108798521B
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- rack
- sliding sleeve
- valve seat
- drilling fluid
- shell
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- 238000005553 drilling Methods 0.000 claims abstract description 40
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000000737 periodic effect Effects 0.000 claims abstract description 10
- 210000002445 nipple Anatomy 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 claims description 14
- 210000004907 gland Anatomy 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 13
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a reciprocating axial impact pressurizing device, which belongs to the technical field of petroleum drilling tools. The device consists of a shell, an upper joint, a lower joint, an assembly shaft and a sliding sleeve, wherein the upper joint is arranged at one end of the shell; the other end of the shell is provided with a sliding sleeve, a rack is arranged in the shell at one side of the upper joint, an assembly shaft is arranged in the shell corresponding to the rack, impellers are symmetrically arranged on the assembly shaft, and an incomplete gear is arranged on the assembly shaft between the impellers; the incomplete gear is in intermittent meshing connection with the rack. The reciprocating axial impact pressurizing device can transmit torque to the drill bit and generate periodic axial vibration and impact, so that the rock breaking efficiency of the drill bit is improved; the drilling fluid is compressed and released through the piston, so that periodic pulse pressurization is formed, periodic axial vibration, impact and pulse pressurization simultaneously act on the rock breaking process of the drill bit, the drilling efficiency of the drill bit is greatly improved, and the phenomena of blocking of a nozzle of the drill bit and generation of mud bags of the drill bit are avoided.
Description
Technical Field
The invention relates to a reciprocating axial impact pressurizing device, which belongs to the technical field of petroleum drilling tools.
Background
With the increasing of the exploration and development proportion of deep wells and ultra-deep wells, the hardness and plasticity of deep stratum rock are increased, and the conventional roller bit has poor drillability, low mechanical rotation speed and long drilling period. In order to improve the mechanical drilling speed of the drill stroke, the PDC drill bit is widely used, the PDC drill bit meets non-average stratum at the moment of drilling, when the torque energy of the drill string cannot meet the torque for breaking the rock, the drill bit stops rotating instantly, external energy is stored in the drill string, when the stored torque energy is larger than the torque required by the rock breaking, the drill string energy is released instantly, and the drill bit and the drill string vibrate vigorously together, so that the phenomenon of 'stick-slip vibration' is generated. To address this problem, it is necessary to develop a tool that provides axial or circumferential impact or compression to improve the rock breaking efficiency of the drill bit.
Disclosure of Invention
The invention aims at: the reciprocating axial impact pressurizing device can simultaneously provide periodic axial vibration, impact and pressurization for the drill bit so as to greatly improve the rock crushing efficiency of the drill bit.
The technical scheme of the invention is as follows:
the utility model provides a reciprocating type axial impact pressure device, it comprises shell, top connection, lower clutch, assembly axle and slip sleeve, its characterized in that: an upper joint is arranged at one end of the shell in a threaded manner; a sliding sleeve is slidably arranged at the end head of the other end of the shell, and a lower joint is arranged at the end head thread of the sliding sleeve; a gland is arranged at the end of the shell at one side of the lower joint in a threaded manner; a rack is movably arranged in the shell at one side of the upper joint through an inner chute, an assembly shaft is arranged in the shell corresponding to the rack, impellers are symmetrically arranged on the assembly shaft, and an incomplete gear is arranged on the assembly shaft between the impellers; the incomplete gear is in intermittent meshing connection with the rack; the sliding sleeve is movably provided with a cylinder sleeve, a stepped hole is formed in the cylinder sleeve, a lower one-way valve is arranged in a small-diameter hole of the cylinder sleeve, an upper one-way valve is arranged in a large-diameter hole of the cylinder sleeve through a compression spring, a connecting nipple is arranged in the sliding sleeve on one side of the upper one-way valve, one end of the connecting nipple is in threaded connection with a rack, and the other end of the connecting nipple is in contact connection with the upper one-way valve.
The lower check valve consists of a lower valve seat, a lower spring and a lower valve ball, wherein the lower spring is arranged on the lower valve seat, and the lower valve ball is arranged at the end head of the lower spring. The lower valve seat is provided with a central hole.
And a buffer spring is arranged between the lower valve seat and the lower joint.
The upper one-way valve consists of an upper valve seat, a piston, an upper spring and an upper valve ball; a piston is arranged on one side of the upper valve seat, central holes are respectively formed in the upper valve seat and the piston, an upper spring is arranged on the upper valve seat, an upper valve ball is arranged at the end head of the upper spring, and the upper valve ball is in contact connection with the central hole of the piston; the upper valve seat and the piston are in sliding sealing connection with the cylinder sleeve.
The connecting nipple joint one end be provided with the centre bore, be provided with radial hole on the connecting nipple joint of centre bore end, radial hole and centre bore intercommunication.
An outer flange is arranged on the sliding sleeve, and a reset spring is arranged between the outer flange and the gland; the gland is in sliding sealing connection with the sliding sleeve.
The upper joint is eccentrically provided with a liquid flow hole;
the shell consists of two semicircular cylinders, and the two semicircular cylinders are closely attached and connected through an upper joint and a gland.
The rack is Y-shaped, and the inner wall of the opening end of the rack is respectively provided with transmission teeth.
The impeller is a conical body, and a plurality of blades are spirally arranged on the impeller.
The invention has the beneficial effects that:
the reciprocating axial impact pressurizing device can transmit torque to the drill bit and generate periodic axial vibration and impact, so that the rock breaking efficiency of the drill bit is improved; the drilling fluid is compressed and released through the piston, so that periodic pulse pressurization is formed, the jet effect of the drill bit nozzle is improved, the stress state of rock is improved, and meanwhile, the cleaning effect of the bottom of the well is enhanced through pulse type impact of the drilling fluid. The periodic axial vibration, impact and pulse pressurization are simultaneously applied to the rock breaking process of the drill bit, so that the drilling efficiency of the drill bit is greatly improved, and the phenomena of blocking of a nozzle of the drill bit and generation of mud inclusion of the drill bit are avoided.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic perspective view of an incomplete gear according to the present invention;
fig. 3 is a schematic perspective view of a rack according to the present invention;
fig. 4 is a schematic perspective view of an impeller according to the present invention.
In the figure: 1. the device comprises a shell, 2, an upper joint, 3, a lower joint, 4, an assembly shaft, 5, a sliding sleeve, 6, a gland, 7, an inner chute, 8, a rack, 9, an impeller, 10, an incomplete gear, 11, a transmission gear, 12, an outer flange, 13, an inner flange, 14, a return spring, 15, a cylinder sleeve, 16, a lower valve seat, 17, a lower spring, 18, a lower valve ball, 19, a buffer spring, 20, a compression spring, 21, an upper valve seat, 22, a piston, 23, an upper spring, 24, an upper valve ball, 25, a connecting nipple, 26 and a radial hole.
Detailed Description
The reciprocating axial impact pressurizing device consists of a shell 1, an upper joint 2, a lower joint 3, a transmission shaft 4 and a sliding sleeve 5, wherein the upper joint 2 is arranged at one end of the shell 1 in a threaded manner; the upper joint 2 is eccentrically provided with a liquid flow hole. The end of the other end of the shell 1 is internally provided with a sliding sleeve in a sliding manner, the sliding sleeve 5 is provided with a sliding key, the inner wall of the shell 1 corresponding to the sliding key is provided with a key groove, the sliding sleeve 5 is in matched sliding connection with the shell 1 through the sliding key and the key groove, and in the working process, the sliding sleeve 5 cannot rotate in the circumferential direction relative to the shell 1 and can move in the axial direction.
The end thread of the sliding sleeve 5 is provided with a lower joint 3; an annular gland 6 is arranged at the end of the shell 1 at one side of the lower joint 3 in a threaded manner; the housing 1 of the reciprocating axial impact pressurizing device is composed of two semi-cylinders, so that assembly of all parts in the housing 1 is facilitated. The two semicircular cylinders forming the shell 1 are closely attached and connected through the upper joint 2 and the gland 5, so that a whole is formed, and radial sealing of the shell 1 is ensured. A rack 8 is movably arranged in the shell 1 at one side of the upper joint 2 through an inner chute 7, the rack 8 is Y-shaped, and transmission teeth 11 are respectively arranged on the upper inner wall and the lower inner wall of the opening end of the rack. The assembly shaft 4 is radially arranged in the shell corresponding to the rack 8, and the impellers 9 are symmetrically arranged on the assembly shaft 5. The impeller 9 is a conical body, and a plurality of blades are spirally arranged on the impeller 9. An incomplete gear 10 is arranged on the assembly shaft 4 between the impellers 9; the incomplete gear 10 and the impeller 9 are fixedly connected with the assembly shaft 4 respectively. The incomplete gear 10 is in intermittent meshing connection with a transmission tooth 11 on the rack 8. The inner slide groove 7 of the pressurizing device has the functions of providing a guiding function for the movement of the rack 8 and ensuring the installation angle of the rack 8 so as to ensure that the rack 8 can be accurately meshed with the incomplete gear 10 in work.
An outer flange 12 is arranged on the sliding sleeve 5 of the pressurizing device, an inner flange 13 is arranged on the inner wall of the shell 1, and the shell 1 axially limits the sliding sleeve 5 through the cooperation of the inner flange 13 and the outer flange 12; a return spring 14 is arranged between the outer flange 12 and the gland 6; the gland 6 is in sliding sealing connection with the sliding sleeve 5.
The sliding sleeve 5 is internally and movably provided with a cylinder sleeve 15, a stepped hole is arranged in the cylinder sleeve 15, a lower one-way valve is arranged in a small diameter hole of the cylinder sleeve 15, the lower one-way valve consists of a lower valve seat 16, a lower spring 17 and a lower valve ball 18, and a central hole is arranged on the lower valve seat 16. A lower spring 17 is arranged on the lower valve seat 16 at the inner side of the central hole, and a lower valve ball 18 is arranged at the end head of the lower spring 17. The lower valve ball 18 is in contact connection with the stepped hole of the cylinder sleeve 15; a buffer spring 19 is arranged between the lower valve seat 16 and the lower joint 3; the lower valve seat 16 is in threaded connection with the cylinder liner 15.
An upper one-way valve is arranged in the large-diameter hole of the cylinder sleeve 15 through a compression spring 20, and the upper one-way valve consists of an upper valve seat 21, a piston 22, an upper spring 23 and an upper valve ball 24; a piston 22 is arranged on one side of the upper valve seat 21, central holes are respectively arranged on the upper valve seat 21 and the piston 22, an upper spring 23 is arranged on the upper valve seat 21, an upper valve ball 24 is arranged at the end head of the upper spring 23, and the upper valve ball 24 is in contact connection with the central hole of the piston 22; the upper valve seat 21 and the piston 22 are in sliding sealing connection with the cylinder sleeve 15. The upper valve seat 21 is screwed with the piston 22.
The sliding sleeve 5 on one side of the upper check valve is internally provided with a connecting nipple 25, one end of the connecting nipple 25 is provided with a central hole, the connecting nipple 25 at the end of the central hole is provided with a radial hole 26, and the radial hole 26 is communicated with the central hole. One end of the connecting nipple 25 is in threaded connection with the rack 8, and the other end of the connecting nipple 25 is in contact connection with the piston 22 of the upper check valve.
When the reciprocating axial impact pressurizing device is assembled, the upper joint 2 is used for connecting a drill string, the lower joint 3 is used for installing a drill bit, and during the working process, drilling fluid entering through a fluid flow hole of the upper joint 2 impacts the blades of the impeller 9 at fixed points, so that the impeller 9 rotates clockwise at high speed; since the incomplete gear 10 and the impeller 9 are fixedly connected with the assembly shaft 4, respectively. The impeller 9 rotates at a high speed and drives the incomplete gear 10 to rotate through the assembly shaft 4; in the rotation process of the incomplete gear 10, the incomplete gear 10 is respectively in intermittent meshing connection with the transmission teeth 11 above the rack 8 and the transmission teeth 11 below the rack 8, wherein when the incomplete gear 10 is meshed with the transmission teeth 11 below the rack 8; the rack 8 is driven to move leftwards, and when the incomplete gear 10 is meshed with the transmission gear 11 above the rack 8; the rack 8 is driven to move rightwards, and the rack 8 is driven to reciprocate leftwards and rightwards in such a cycle.
While the rack 8 reciprocates left and right, drilling fluid which is impacted on the impeller 9 enters the central hole of the connecting nipple 25 through the radial hole 26 and is converged at the joint of the connecting nipple 25 and the piston 22 along with the left and right reciprocating motion of the rack 8; during this process, as the pressure of the drilling fluid increases and the nipple 25 moves to the right, the pressure developed on the drilling fluid forces the drilling fluid to push the upper ball 24 away into the cavity between the upper seat 21 and the lower ball 18. As the connecting nipple 25 continues to move rightward, the connecting nipple 25 contacts the piston 22 and pushes the piston 22 and the upper valve seat 21 to move rightward along the cylinder liner 15, and in this process, the upper valve seat 21 extrudes drilling fluid in the cavity between the upper valve seat 21 and the lower valve ball 18; wherein the reverse pressure generated by squeezing the drilling fluid forces the upper valve ball 24 to block the central hole of the piston 22, so that the drilling fluid pressure in the cavity suddenly rises, and pushes the lower valve ball 18 to be ejected from the central hole on the lower valve seat 16 at a high speed, namely pulse pressurization is generated. The drilling fluid ejected at high speed acts on the drill bit, so that the phenomena of blockage of a drill bit nozzle and generation of mud inclusion of the drill bit are avoided. After the connecting nipple 25 is retracted, the piston 22 is reset under the action of the compression spring 20, and thus, the cycle is performed, and pulse pressurization is periodically generated.
Because of the sliding fit between the connecting nipple 25 and the sliding sleeve 5, when the connecting nipple 25 moves rightwards and the radial holes 26 enter the sliding sleeve 5, the flow passage of drilling fluid is cut off; drilling fluid which is used for completing impact on the impeller 9 acts on the end surface of the sliding sleeve 5, so that the sliding sleeve 5 is pushed to the right by extrusion, and the return spring 14 is compressed; when the radial holes 26 are exposed in the right direction of the sliding sleeve 5, the flow channels of drilling fluid are communicated, at this time, the drilling fluid pressure acting on the end face of the sliding sleeve 5 is reduced, the connecting nipple 25 is reset under the action of the reset spring 14, and thus the sliding sleeve 5 is repeatedly displaced in the axial direction periodically, namely, axial vibration force is generated. The vibration force acts on the drill bit through the lower joint; the stress state of the rock can be improved, and the drilling efficiency of the drill bit can be greatly improved.
The reciprocating axial impact pressurizing device compresses and releases drilling fluid through the movement of the piston 22 while transmitting torque to the drill bit, so that periodic pulse pressurization is formed, the jet effect of the drill bit nozzle is improved, periodic axial vibration force is generated through the reciprocating movement of the sliding sleeve 5, the stress state of rock is improved, and the rock breaking efficiency of the drill bit is improved; meanwhile, the cleaning effect of the bottom of the well is enhanced by the pulse impact of the drilling fluid. The periodical axial vibration and pulse pressurization are simultaneously applied to the drill bit, so that the phenomena of blockage of a drill bit nozzle and generation of balling of the drill bit can be avoided, and the drilling efficiency of the drill bit is greatly improved.
Claims (4)
1. The utility model provides a reciprocating type axial impact pressure device, it comprises shell (1), upper joint (2), lower joint (3), assembly axle (4) and slip sleeve (5), its characterized in that: an upper joint (2) is arranged at one end of the shell (1) in a threaded manner; a sliding sleeve (5) is slidably arranged at the end head of the other end of the shell (1), and a lower joint (3) is arranged at the end head thread of the sliding sleeve (5); a gland (6) is arranged at the end thread of the shell (1) at one side of the lower joint (3); a rack (8) is movably arranged in the shell (1) at one side of the upper joint (2) through an inner chute (7), an assembly shaft (4) is arranged in the shell (1) corresponding to the rack (8), impellers (9) are symmetrically arranged on the assembly shaft (4), and an incomplete gear (10) is arranged on the assembly shaft (4) between the impellers (9); the incomplete gear (10) is in intermittent meshing connection with the rack (8); a cylinder sleeve (15) is movably arranged in the sliding sleeve (5), a stepped hole is formed in the cylinder sleeve (15), a lower one-way valve is arranged in a small-diameter hole of the cylinder sleeve (15), an upper one-way valve is arranged in a large-diameter hole of the cylinder sleeve (15) through a compression spring (20), a connecting nipple (25) is arranged in the sliding sleeve (5) at one side of the upper one-way valve, one end of the connecting nipple (25) is in threaded connection with a rack (8), and the other end of the connecting nipple (25) is in contact connection with the upper one-way valve;
the lower check valve consists of a lower valve seat (16), a lower spring (17) and a lower valve ball (18), the lower spring (17) is arranged on the lower valve seat (16), and the lower valve ball (18) is arranged at the end head of the lower spring (17); the lower valve seat (16) is provided with a central hole; a buffer spring (19) is arranged between the lower valve seat (16) and the lower joint (3);
the upper one-way valve consists of an upper valve seat (21), a piston (22), an upper spring (23) and an upper valve ball (24); a piston (22) is arranged on one side of the upper valve seat (21), central holes are respectively formed in the upper valve seat (21) and the piston (22), an upper spring (23) is arranged on the upper valve seat (21), an upper valve ball (24) is arranged at the end of the upper spring (23), and the upper valve ball (24) is in contact connection with the central holes of the piston (22); the upper valve seat (21) and the piston (22) are in sliding sealing connection with the cylinder sleeve (15);
the rack (8) is Y-shaped, and the inner walls of the opening ends of the rack (8) are respectively provided with transmission teeth (11);
one end of the connecting nipple (25) is provided with a central hole, the connecting nipple (25) at the end of the central hole is provided with a radial hole (26), and the radial hole (26) is communicated with the central hole;
an outer flange (12) is arranged on the sliding sleeve (5), and a return spring (14) is arranged between the outer flange (12) and the gland (6); the gland (6) is in sliding sealing connection with the sliding sleeve (5);
when the drilling fluid impact device works, the impeller (9) rotates clockwise at a high speed; the incomplete gear (10) and the impeller (9) are respectively fixedly connected with the assembly shaft (4); the impeller (9) rotates at a high speed and drives the incomplete gear (10) to rotate through the assembly shaft (4); in the rotation process of the incomplete gear (10), the incomplete gear is respectively in intermittent meshing connection with a transmission tooth (11) above the rack (8) and a transmission tooth (11) below the rack (8), wherein when the incomplete gear (10) is meshed with the transmission tooth (11) below the rack (8); when the incomplete gear (10) is meshed with the transmission gear (11) above the rack (8), the rack (8) is driven to move leftwards; the rack (8) is driven to move rightwards, and the rack (8) is driven to reciprocate leftwards and rightwards in such a way;
drilling fluid which is impacted on the impeller (9) enters a central hole of the connecting nipple (25) through a radial hole (26) while the rack (8) reciprocates left and right, and is converged at the joint of the connecting nipple (25) and the piston (22) along with the left and right reciprocating motion of the rack (8); in the process, along with the pressure increase of the drilling fluid and the rightward movement of the connecting nipple (25), the pressure formed by the drilling fluid forces the drilling fluid to push the upper valve ball (24) away and enter a cavity between the upper valve seat (21) and the lower valve ball (18); as the connecting nipple (25) continues to move rightwards, the connecting nipple (25) is contacted with the piston (22) and pushes the piston (22) and the upper valve seat (21) to move rightwards along the cylinder sleeve (15), and in the process, the upper valve seat (21) extrudes drilling fluid in a cavity between the upper valve seat (21) and the lower valve ball (18); the reverse pressure generated by extruding the drilling fluid forces the upper valve ball (24) to block the central hole of the piston (22), so that the drilling fluid pressure in the cavity suddenly rises, and pushes the lower valve ball (18) to be ejected from the central hole on the lower valve seat (16) at high speed, namely pulse pressurization is generated; the drilling fluid ejected at high speed acts on the drill bit, so that the phenomena of blockage of a drill bit nozzle and mud inclusion of the drill bit are avoided; after the connecting nipple (25) is retracted, the piston (22) is reset under the action of the compression spring (20), and pulse pressurization is periodically generated in such a cycle; because of the sliding fit between the connecting nipple (25) and the sliding sleeve (5), when the connecting nipple (25) moves rightwards and the radial hole (26) enters the sliding sleeve (5), the flow passage of drilling fluid is cut off; drilling fluid which is used for completing impact on the impeller (9) acts on the end surface of the sliding sleeve (5), so that the sliding sleeve (5) is pushed to move right in a squeezing way, and meanwhile, the return spring (14) is compressed; when the radial holes (26) are exposed in the right side of the sliding sleeve (5), the flow channels of drilling fluid are communicated, at the moment, the drilling fluid pressure acting on the end face of the sliding sleeve (5) is reduced, the connecting nipple (25) is reset under the action of the reset spring (14), and the process is repeated, so that the sliding sleeve (5) generates periodic axial displacement.
2. A reciprocating axial impact pressurizing device as defined in claim 1, wherein: the upper joint (2) is eccentrically provided with a liquid flow hole.
3. A reciprocating axial impact pressurizing device as defined in claim 1, wherein: the shell (1) consists of two semicircular cylinders, and the two semicircular cylinders are tightly attached and connected through an upper joint (2) and a gland (6).
4. A reciprocating axial impact pressurizing device as defined in claim 1, wherein: the impeller (9) is a conical body, and a plurality of blades are spirally arranged on the impeller (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810891913.5A CN108798521B (en) | 2018-08-07 | 2018-08-07 | Reciprocating axial impact pressurizing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810891913.5A CN108798521B (en) | 2018-08-07 | 2018-08-07 | Reciprocating axial impact pressurizing device |
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| Publication Number | Publication Date |
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| CN108798521A CN108798521A (en) | 2018-11-13 |
| CN108798521B true CN108798521B (en) | 2023-09-29 |
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| CN201810891913.5A Active CN108798521B (en) | 2018-08-07 | 2018-08-07 | Reciprocating axial impact pressurizing device |
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| CN110821479B (en) * | 2019-11-14 | 2022-04-22 | 西南石油大学 | Underground traction device for avoiding pressure difference to meet clamping in cable logging |
| CN112112570B (en) * | 2020-09-07 | 2022-09-02 | 中石化石油机械股份有限公司 | Method for increasing output power of jet flow hydraulic oscillator |
| CN113006695B (en) * | 2021-04-06 | 2022-03-11 | 西南石油大学 | PDC drill bit pulse impact device and method |
| CN117967196A (en) * | 2024-04-01 | 2024-05-03 | 太原理工大学 | Enhanced pulsating impact load generation device |
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| CN108798521A (en) | 2018-11-13 |
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