CN113638688A - Enhanced pulsating impact load generating device - Google Patents
Enhanced pulsating impact load generating device Download PDFInfo
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- CN113638688A CN113638688A CN202110905390.7A CN202110905390A CN113638688A CN 113638688 A CN113638688 A CN 113638688A CN 202110905390 A CN202110905390 A CN 202110905390A CN 113638688 A CN113638688 A CN 113638688A
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- 230000003321 amplification Effects 0.000 claims abstract description 85
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 85
- 230000005540 biological transmission Effects 0.000 claims abstract description 66
- 238000005553 drilling Methods 0.000 claims abstract description 58
- 239000012530 fluid Substances 0.000 claims abstract description 43
- 230000000694 effects Effects 0.000 claims abstract description 20
- 230000000737 periodic effect Effects 0.000 claims abstract description 10
- 230000010349 pulsation Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims 1
- 238000005381 potential energy Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 16
- 230000008859 change Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
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- 230000008901 benefit Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- 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
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
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- 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
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Abstract
The invention discloses an enhanced pulse impact load generating device which comprises an upper joint, an outer shell, a flow guide seat, an impeller, a primary amplification cavity, a secondary amplification cavity, a piston, a sealing ring, a transmission shaft, a disc spring group, a disc spring adjusting sheet, a transmission sleeve and a lower joint group. During drilling, the disc spring group relieves violent drill string vibration into vibration with stable frequency, and the compression-extension of the disc spring converts elastic potential energy into kinetic energy; meanwhile, the drilling fluid generates periodic pressure fluctuation after passing through the impeller along the central flow passage, pulse signals are amplified after flowing through the primary amplification cavity and then flow through the secondary amplification cavity, pulsation impact with a stronger effect is formed, a part of the flowing drilling fluid acts on the cross section of the piston in a pulsation impact load mode to enable the piston to drive the transmission shaft and the drill bit to axially move together, pressure generated by the drilling fluid and elastic force generated by the disc spring are mutually superposed, superposition of various types of energy is achieved, the drill bit generates a stronger impact effect, and the operation efficiency of the drill bit is improved.
Description
Technical Field
The invention relates to mechanical devices in the fields of petroleum drilling development, ore mining and the like, in particular to an enhanced type pulse impact load generating device.
Background
In the drilling operation process, the power for crushing the rocks at the bottom of the well is transmitted to the drill bit by a ground power system through a downhole drilling tool, and the problems of low efficiency exist in the traditional drilling mode such as transmission, conversion, distribution, utilization and the like of the power. The hydraulic pulse combined at the drill bit can effectively improve the drilling effect in relevant research surfaces at home and abroad, but the hydraulic pulse combined drill bit is not widely applied due to technical reasons and the like. Meanwhile, the violent torque fluctuation, the enhanced frictional resistance with the stratum and the reduced service life of the drill string can be caused by the violent vibration of the drill string in the drilling process, so that the rock breaking efficiency of the drill bit is low, the drilling speed is influenced and the drilling cost is increased. Therefore, the method improves the rock-breaking efficiency of the drill bit impact by utilizing the hydraulic energy at the bottom of the well and relieves the vibration of a drill column, and has important significance for improving the mechanical drilling speed of the well drilling.
Disclosure of Invention
In order to improve the rock breaking efficiency of the drill bit, the invention provides an enhanced type pulse impact load generating device.
The utility model provides an enhancement mode pulsation impact load generating device, load generating device includes top connection, shell body, transmission cover and the lower clutch that loops through threaded connection, and drilling rod or drill collar are connected to the top connection, and the drill bit is connected to the lower clutch lower extreme, is provided with the packing ring between top connection lower extreme and the shell body upper end internal thread bottom, makes top connection and shell body inside have inclosed annular space, and water conservancy diversion seat, impeller, one-level amplification chamber, second grade amplification chamber, piston and transmission shaft set gradually in the annular space, there is annular space between shell body and the transmission shaft, is provided with the energy storage playback component in the annular space, the water conservancy diversion seat sets up to there being the slope, the impeller is located the below of water conservancy diversion seat and rotates the one side of connection in the impeller seat intracavity, there is the clearance between second grade amplification chamber lower extreme and the piston, be provided with the sealing washer between piston and the shell body, be provided with first annular step on the shell body upside inner wall, the piston erects on first annular step up end, shell body and piston interference fit, relative axial motion can be made to shell body relatively to piston, transmission shaft, lower clutch and drill bit, and the shell body rotation drives piston, transmission shaft, lower clutch and drill bit and rotates, and the driving sleeve lower extreme inner wall is provided with hexagonal pore, hexagonal spline fit on hexagonal pore and the transmission shaft lower extreme outer wall, drilling fluid produce behind the impeller periodic pressure pulse fluctuation at one-level amplification chamber and second grade amplification chamber synergism make the pressure pulse fluctuation signal of drilling fluid carry out twice and enlarge and produce resonance pressure boost pulse signal, increase drill bit to the impact effect of shaft bottom rock.
Furthermore, a second annular step surface is arranged in the middle of the transmission shaft, the upper end of the second annular step surface is in threaded connection with the disc spring adjusting piece, a disc spring assembly is arranged between the lower end surface of the first annular step of the inner wall of the outer shell and the disc spring adjusting piece, the upper end of the disc spring assembly is clamped on the first annular step, and the lower end of the disc spring assembly is clamped by the disc spring adjusting piece on the transmission shaft.
Furthermore, drilling fluid central flow channels are arranged in the upper joint, the flow guide seat, the impeller seat, the primary amplification cavity, the secondary amplification cavity, the piston, the transmission shaft and the lower joint, and are all located on the same axial horizontal plane.
Furthermore, the upper joint, the outer shell, the piston, the transmission shaft and the lower joint are all connected by adopting tapered threads, and pressure-bearing horizontal planes are arranged at all the joints.
Further, piston, transmission shaft and lower clutch are installed in the center of shell body, and threaded connection is used to piston lower extreme and transmission shaft upper end, and threaded connection is used to lower clutch upper end and transmission shaft lower extreme, and threaded connection is adopted to transmission cover upper end and shell body lower extreme.
Furthermore, the guide seat, the impeller seat, the primary amplification cavity and the secondary amplification cavity are arranged inside the upper joint, and the guide seat, the impeller seat, the primary amplification cavity and the secondary amplification cavity are in sliding fit with the inner wall of the upper joint.
Furthermore, the length of the amplification cavity of the first-stage amplification cavity and the second-stage amplification cavity is 40-120mm, the diameter of the outlet of the first-stage amplification cavity and the outlet of the second-stage amplification cavity are 10-40mm, the collision angle of the first-stage amplification cavity is 30-120 degrees, the collision angle of the second-stage amplification cavity is 30-90 degrees, the inner diameter of the first-stage amplification cavity is 50-80 mm, and the inner diameter of the second-stage amplification cavity is 60-100 mm.
Furthermore, the gap of the guide seat is 15-40mm, the wheel diameter of the impeller is 30-50mm, the outer diameter of the blade is 80-110mm, and the shortest distance between the impeller and the inner cavity of the impeller seat at the connecting side of the impeller and the non-impeller is 3-20 mm.
Has the advantages that: the device can relieve violent drill string vibration by using the disc spring group, reduce the drill string vibration frequency and reduce risks caused by violent drill string vibration. The drilling fluid generates periodic pressure fluctuation after flowing through the blades, the pressure pulse signal is amplified after flowing through the first-stage amplification cavity, the pressure pulse signal is further amplified after flowing through the second-stage amplification cavity, a part of pulse impact load with stronger force is formed and is ejected from a drill water hole in a pulse jet mode along a central flow passage of the piston, the transmission shaft and the lower joint, the other part of pulse impact load is acted on the cross section of the piston in a pulse impact load mode, elastic potential energy generated by compression-extension of the disc spring group and pulse impact energy formed by the drilling fluid are mutually superposed, and torque generated by rotation of the drill is combined, so that the working efficiency of the drill can be improved, and the working cost of drilling engineering can be reduced.
The device has simple structure, convenient processing and stronger effect, and can be used for treating various stratum structures. The device utilizes the adjustable characteristics of the impeller, the primary amplification cavity and the secondary amplification cavity to change the pulse pressure generated by the drilling fluid, enhance the pressure pulse signal thereof, form stronger pulse impact load to act on the piston surface, transmit the pulse impact load to the drill bit and generate rock breaking effects of different degrees aiming at different stratums by combining the rotation of the drill bit; meanwhile, the drilling fluid flowing through the central flow passage is ejected out of a drill bit water hole in a pulse jet mode, so that the effect of cleaning rock debris at the bottom of a well is achieved; the device can relieve the hard impact of the violent vibration of the drill column on the drill bit, utilizes the disc spring group to be pressed to generate deformation and store energy, combines and jointly releases the energy with hydraulic energy generated by drilling fluid, transmits the energy to the drill bit to generate better rock breaking effect, realizes the superposition combination of multiple energies, improves the drilling speed, has more pertinence in different well bottom rock stratums, and ensures that a well bottom operation tool plays the maximum value.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a tool undergoing compression set;
FIG. 3 is a schematic view of the tool at an extension impact;
FIG. 4 is a schematic view of a disc spring assembly;
FIG. 5 is a schematic view of the hexagonal spline fit between the driving sleeve and the lower end of the outer housing;
FIG. 6 is a schematic diagram showing the structural parameters of the impeller structure and the primary amplification chamber and the secondary amplification chamber.
In the figure: 1. the structure comprises an upper joint, 2. a flow guide seat, 3. an impeller, 4. an impeller seat, 5. a primary amplification cavity, 6. a secondary amplification cavity, 7. a gasket, 8. a piston, 9. a sealing ring, 10. a disc spring group, 11. a disc spring adjusting sheet, 12. an outer shell, 13. a transmission shaft, 14. a transmission sleeve, 15. a lower joint, 16. a drill bit, L1. the length of the primary amplification cavity, L2. the length of the secondary amplification cavity, L3. the shortest distance between the impeller blade and the inner cavity of the impeller seat at the non-impeller connecting side, L4. a flow guide seat gap, and,
The diameter of the outlet of the primary amplification cavity,
The diameter of the outlet of the secondary amplification cavity,
The diameter of the impeller,
The outer diameter of the blade,
The inner diameter of the primary amplification cavity,
The inner diameter of the secondary amplification cavity, alpha, the collision angle of the primary amplification cavity, and beta, the collision angle of the secondary amplification cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
According to the attached drawings, the enhanced type pulsation impact load generating device sequentially comprises an upper joint 1, an outer shell 12, a transmission sleeve 14 and a lower joint 15 along the axial direction, wherein the upper end of the upper joint 1 is connected with a drill rod or a drill collar, the lower end of the upper joint 1 is in threaded connection with the outer shell 12, the tail part of the lower end of the upper joint 1 is in threaded connection with the bottom of the upper end of the outer shell 12, a gasket 7 is arranged at the bottom of the threaded connection between the tail part of the lower end of the upper joint 1 and the upper end of the outer shell 12, so that a closed annular gap is formed inside the upper joint 1 and the outer shell 12, a piston 8, a transmission shaft 13 and the lower joint 15 are arranged in the center of the outer shell 12, the lower end of the piston 8 is in threaded connection with the upper end of the transmission shaft 13, the upper end of the lower joint 15 is in threaded connection with the lower end of the transmission shaft 13, the upper end of the transmission sleeve 14 is in threaded connection with the lower end of the outer shell 12, and the inner wall of the lower end of the transmission sleeve 14 is provided with a hexagonal hole channel, and is matched with a hexagonal spline on the outer wall of the lower end of the transmission shaft 13 and is used for transmitting torque through a transmission sleeve 14. The piston 8 and the lower joint connected with the transmission shaft 13 can move axially relative to the outer shell 12, the drill string rotates in the operation process, and the outer shell 12 can drive the piston 8, the transmission shaft 13 and the lower joint 15 to rotate. An annular space is arranged between the outer shell 12 and the transmission shaft 13, a disc spring group 10 and a disc spring adjusting sheet 11 are arranged in the annular space, the disc spring group 10 is arranged to relieve violent vibration of the drill string to adjust amplitude change of the drill string, meanwhile, the disc spring group 10 is in telescopic deformation, and generated elastic force is transmitted to the drill bit through an annular step on the transmission shaft. A flow guide seat 2, an impeller 3, an impeller seat 4, a primary amplification cavity 5 and a secondary amplification cavity 6 are sequentially arranged in the upper joint 1, gaskets 7 are arranged at the lower end of the upper joint 1 and the threaded bottom end of the upper part of the outer shell 12, and a gap in a certain range exists between the lower end of the secondary amplification cavity 6 and the piston, so that drilling fluid is accumulated to impact the piston 8. And a sealing ring 9 is arranged outside the piston 8 to prevent drilling fluid from flowing into the outer shell 12. The inner wall of the outer shell 12 is provided with an annular step surface which is in interference fit with the piston 8, so that the piston 8 can axially move and cannot be separated from the outer shell 12. The guide seat 2, the impeller 3, the impeller seat 4, the primary amplification cavity 5 and the secondary amplification cavity 6 are internally provided with liquid central flow channels, the guide seat 2 is arranged to be a slope to generate acceleration to flowing drilling fluid, the rotation of the impeller 3 enables the cross section area of a liquid flow path which originally impacts the bottom of a well to generate periodic change, continuous and stable liquid flow is converted into liquid flow with pulse effect, when the liquid flows through the primary amplification cavity 5, the pulse flowing liquid amplifies the pulse amplitude through the pressure feedback of the fluid and enables the pulse amplitude to generate resonance, the pulse flowing liquid is converted into liquid flow with pulse resonance effect, and the liquid flow is jetted into relatively static liquid at relatively high speed to generate cavitation bubble phenomenon; when the liquid flows through the secondary amplification cavity 6, the flowing liquid enters the resonance pressurization cavity, the upstream area of the cavity has stronger entrainment phenomenon due to the high-speed turbulent jet flow of the liquid, and the resonance pressurization phenomenon is generated in the secondary amplification cavity 6 by combining the excitation pressure disturbance effect of the liquid, the pulse energy of the liquid flow is amplified again, and the fluid ejected from the outlet of the secondary amplification cavity 6 has stronger pulse energy. The formed hydraulic pressure acts on the cross section of the piston 8, a transmission shaft 13 connected with the piston 8 and a lower joint 15 generate axial displacement, the hydraulic pressure generated by the drilling fluid and the elastic force generated by compression-extension of the disc spring group 10 are superposed and then are transmitted to the drill bit together, and the impact effect of the drill bit 16 on the rock at the bottom of the well is increased. Piston 8 and lower clutch 15 all are toper threaded connection with transmission shaft 13 upper and lower both ends respectively, and piston 8, transmission shaft 13 and lower clutch 15 are located shell body and driving sleeve inside and are provided with the centre runner, and some continue to flow along the centre runner when having stronger pulse characteristic's liquid partly impact piston 8 face, and the fluid that has pulse characteristic is erupted by the water hole of drill bit 16 at last, plays the effect of the broken rock in clearance shaft bottom, has improved drill bit 16 operating efficiency.
In the drilling process, the disc spring group relieves violent drill string vibration into vibration with stable frequency, and the compression-extension of the disc spring converts elastic potential energy into kinetic energy; meanwhile, the drilling fluid generates periodic pressure fluctuation after passing through the impeller along the central flow passage, pulse signals are amplified after flowing through the primary amplification cavity and then flow through the secondary amplification cavity to form pulse impact with stronger effect, a part of the flowing drilling fluid acts on the cross section of the piston in a pulse impact load mode to enable the piston to drive the transmission shaft and the drill bit connected to the lower joint to axially move together, the pressure generated by the drilling fluid and the elastic force generated by the disc spring are mutually superposed, the superposition of various types of energy is realized, and the drill bit generates stronger impact effect; the other part is sprayed out from a drill water hole in a pulse jet mode through the central flow passage, so that the rock debris at the bottom of the well is cleaned, and the working efficiency of the drill is improved.
An annular step surface and a gasket are arranged at the bottom end of the connection part of the lower end surface of the upper joint and the conical thread at the upper part of the outer shell. The upper joint, and a flow guide seat, an impeller seat, a primary amplification cavity, a secondary amplification cavity, a piston, a transmission shaft and a drilling fluid central flow passage of the lower joint in the upper joint are all positioned on the same axial horizontal plane; the upper joint, the outer shell, the piston, the transmission shaft and the lower joint are all connected by conical threads, and pressure-bearing horizontal planes are arranged at all the joints. The inner wall of the transmission sleeve is provided with a hexagonal hole channel which is matched with a spline at the lower part of the transmission shaft, the piston, the transmission shaft, the lower joint and the drill bit can axially move relative to the outer shell, and the outer shell can rotate to drive the piston, the transmission shaft, the lower joint and the drill bit to rotate. The middle part of the transmission shaft is provided with an annular step surface, the upper end of the annular step surface is provided with threads and is in threaded connection with the disc spring adjusting piece, the disc spring assembly is placed on the transmission shaft between the lower end surface of the annular step on the inner wall of the outer shell and the disc spring adjusting piece, the upper end of the disc spring assembly is clamped on the step surface in the outer shell, and the lower end of the disc spring assembly is clamped by the disc spring adjusting piece on the transmission shaft.
The disc spring set has the advantages that the annular step surface is arranged in the outer shell and is in interference fit with the piston, the piston can move axially and cannot be separated from the outer shell, the deformation range of the disc spring set is controlled, and the compression strength of the disc spring set is prevented from reaching the damage limit.
The invention has the advantages that the guide seat, the impeller seat, the primary amplification cavity and the secondary amplification cavity are in sliding fit relative to the inside of the upper joint, the installation is simple, the disassembly is convenient, impellers and amplification cavities with different structures can be replaced, and pulse fluctuation with different frequencies can be adjusted according to actual requirements on site. When drilling fluid flows through the impeller, the impeller rotates to generate the change of the sectional area of the periodic flow channel, further the periodic pressure change is generated, then the stronger pulsating impact load is formed by the change of the amplification cavity combination, one part acts on the piston and is further transmitted to the drill bit, and the other part is sprayed out by the drill bit water hole to jet the pulse jet flow so as to meet the requirement of improving the mechanical drilling speed.
The drilling fluid has the third advantage that the primary amplification cavity and the secondary amplification cavity are adopted, when the drilling fluid flows through the primary amplification cavity, the pressure pulse signal generated by the impeller element is amplified, the common pulse signal is converted into the resonance pulse signal and cavitation bubbles are generated, and when the drilling fluid flows through the secondary amplification cavity, the resonance pulse signal can be further amplified to generate a stronger resonance supercharging pulse signal due to the special structural characteristics of the drilling fluid. Wherein, the range of L1 and L2 is controlled to be 40-120mm, the range of L3 is controlled to be 3-20mm, the range of L4 is controlled to be 15-40mm, the range of phi 1 is controlled to be 10-40mm, the range of phi 2 is controlled to be 10-40mm, the range of phi 3 is controlled to be 30-50mm, the range of phi 4 is controlled to be 80-110mm, the range of phi 5 is 50mm-80mm, the range of phi 6 is 60mm-100mm, the control range of alpha is 30-120 degrees, and the control range of beta is 30-90 degrees.
The disc spring set is arranged to relieve violent vibration generated by a drill string, simultaneously, the disc spring set is compressed and deformed to store energy, the piston, the transmission shaft, the lower joint and the drill bit are driven to move axially by combining pressure pulse load generated by drilling fluid, and the elastic force generated by compression and extension of the disc spring and hydraulic pressure generated by the drilling fluid are mutually superposed to form stronger energy to act on the drill bit, so that the rock breaking efficiency of the drill bit through impact is improved.
The disc spring adjusting piece is arranged aiming at strata with different rock breaking strengths, the initial deformation condition of the disc spring before the tool is put into the stratum is adjusted, and the rock breaking impact frequency of the drill bit is adjusted, so that the drill bit is ensured to exert the maximum use effect, and the drilling speed is improved.
The working process of the invention is as follows: the upper connector connected with the drill column vibrates in a reciprocating manner along with the drill column, and the disc spring is compressed through the step surface on the inner part of the connected outer shell, so that the violent vibration of the drill column is relieved, the effect of protecting a drill bit is achieved, and meanwhile, the disc spring is compressed, deformed and stored with energy; when drilling fluid flows through the flow channel, the fluid forms pulse jet flow with fluctuation characteristic under the disturbance action generated by the periodic rotation of the impeller, and after continuously impacting the collision angle of the inner wall, the fluid with the pulse characteristic flows through the primary amplifying cavity, axially symmetric vortex flow is formed in the cavity and is superposed with pulse signals generated by the disturbance action of the impeller and periodically enhanced; after the fluid enters the secondary pulse amplification cavity, a new reflection signal is generated after the fluid impacts the inner wall impact angle and is combined with the original pulse signal, a jet flow shear layer for amplifying the pulse signal is formed, vortex flow with axisymmetric characteristics is generated in the cavity of the secondary amplification cavity, the fluid in the vortex flow continuously impacts the inner wall impact angle in the cavity, and the amplification effect of the jet flow pulse signal flowing into the secondary amplification cavity is periodically enhanced. A closed annular space is arranged between the secondary amplification cavity and the piston, a part of pressure generated by drilling fluid acts on the piston and simultaneously superposes elasticity generated by compression-extension of a disc spring to drive the transmission shaft, the lower joint and the drill bit to axially reciprocate together, and the other part of pressure is sprayed out from a water hole of the drill bit in a pulse jet mode along a central flow passage of the piston, the transmission shaft and the lower joint and then combined with the rotation of the upper drill bit, so that the mechanical drilling speed of the drill bit is improved, the drilling time is reduced, the working efficiency is greatly improved, and the drilling cost is saved.
Generally speaking, the invention works with various energy combinations in the drilling process, when a disc spring group is adjusted to a corresponding pretightening force by a disc spring adjusting sheet, the drill string vibrates to drive an upper connector and an outer shell to vibrate, the disc spring group is compressed and deformed when encountering the upward resistance of a drill bit by a rock at the bottom of a well, the compression deformation of the disc spring group can relieve the violent vibration of the drill string and store energy, meanwhile, when drilling fluid flows through, an impeller rotates, the pressure of the flowing drilling fluid generates continuous periodic change to form pressure pulse, the pressure pulse signal is doubly amplified by a primary amplification cavity and a secondary amplification cavity, a part of the drilling fluid pressurized in a closed annular space acts on a piston surface to push a piston, a transmission shaft, a lower connector and the drill bit to move axially, and then potential energy in the compression-extension deformation of the disc spring group is superposed to be converted into energy generated by kinetic energy, the impact of the community on the drill bit against the formation at the bottom of the well; the other part is sprayed out in a pulse jet mode through a central flow passage of the piston, the transmission shaft and the lower joint, crushed stones at the bottom of the well are cleaned, and the mechanical drilling speed of the drill bit can be improved by combining the rotation of the drill bit, so that the rock breaking effect of the drill bit is improved.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (9)
1. The utility model provides an enhancement mode pulsation impact load generating device, load generating device includes the top connection, shell body, transmission cover and the lower clutch that loop through threaded connection, and drilling rod or drill collar are connected to the top connection upper end, and the drill bit is connected to the lower clutch lower extreme, and its characterized in that is provided with the packing ring between top connection lower extreme and the shell body upper end internal thread bottom, makes top connection and shell body inside have inclosed annular space, and water conservancy diversion seat, impeller, one-level amplification chamber, second grade amplification chamber, piston and transmission shaft set gradually in the annular space, have annular space between shell body and the transmission shaft, be provided with the energy storage playback component in the annular space, the water conservancy diversion seat sets up to there is the slope, the impeller is located the below of water conservancy diversion seat and rotates the one side of connecting in the impeller seat intracavity, there is the clearance between second grade amplification chamber lower extreme and the piston, be provided with the sealing washer between piston and the shell body, be provided with first annular step on the shell body upside inner wall, the piston erects on first annular step up end, shell body and piston interference fit, relative axial motion can be made to piston, transmission shaft, lower clutch and drill bit shell body relatively, and the shell body rotation drives piston, transmission shaft, lower clutch and drill bit and rotates, and transmission cover lower extreme inner wall is provided with hexagonal pore, hexagonal pore and the hexagonal spline fit on the outer wall of transmission shaft lower extreme, drilling fluid produce behind the impeller periodic pressure pulse after undulant at one-level amplification chamber and second grade amplification chamber synergism make the pressure pulse fluctuation signal of drilling fluid amplify twice and produce resonance pressure boost pulse signal, increase drill bit to the impact effect of shaft bottom rock.
2. An enhanced impulsive load generating device as claimed in claim 1, wherein the energy storing return means comprises a disc spring assembly comprising a disc spring adjustment blade and a plurality of disc springs.
3. An enhanced impulse shock load generator as claimed in claim 2, wherein a second annular step surface is provided at the middle of the transmission shaft, the upper end of the second annular step surface is threadedly connected to the disc spring adjustment piece, a disc spring assembly is provided between the lower end surface of the first annular step of the inner wall of the outer housing and the disc spring adjustment piece, the upper end of the disc spring assembly is clamped at the lower end of the first annular step, and the lower end of the disc spring assembly is clamped by the disc spring adjustment piece on the transmission shaft.
4. An enhanced impulsive load generating device as claimed in claim 1, wherein the upper adaptor, the deflector seat, the impeller seat, the primary amplification chamber, the secondary amplification chamber, the piston, the transmission shaft and the lower adaptor are all provided with a central passage for drilling fluid, and the central passages for drilling fluid are all located at the same axial level.
5. An enhanced pulsating impact load generation device as claimed in claim 1, wherein said upper joint, outer shell, piston, transmission shaft and lower joint are all connected by tapered screw thread and each joint is provided with a pressure bearing horizontal plane.
6. An enhanced pulsating impact load generation device as claimed in claim 1, wherein said piston, said transmission shaft and said lower joint are installed at the center of said outer housing, the lower end of said piston is connected with the upper end of said transmission shaft by screw threads, the upper end of said lower joint is connected with the lower end of said transmission shaft by screw threads, and the upper end of said transmission sleeve is connected with the lower end of said outer housing by screw threads.
7. An enhanced pulsating impact load generation device as claimed in claim 1, wherein said deflector seat, impeller seat, primary amplification chamber and secondary amplification chamber are disposed inside said upper joint, and said deflector seat, impeller seat, primary amplification chamber and secondary amplification chamber are slidably engaged with the inner wall of said upper joint.
8. An enhanced impulsive load generating device as claimed in claim 1, wherein the length of the primary and secondary amplification chambers is 40-120mm, the diameters of the outlets of the primary and secondary amplification chambers are 10-40mm, the angle of impact of the primary amplification chamber is 30-120 °, the angle of impact of the secondary amplification chamber is 30-90 °, the internal diameter of the primary amplification chamber is 50-80 mm, and the internal diameter of the secondary amplification chamber is 60-100 mm.
9. An enhanced pulsating impact load generation device as claimed in claim 1, wherein said guide seat height is 15-40mm, said impeller wheel diameter is 30-50mm, blade outer diameter is 80-110mm, and the shortest distance between the impeller wheel and the impeller seat inner cavity on the non-impeller connection side is 3-20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110905390.7A CN113638688A (en) | 2021-08-09 | 2021-08-09 | Enhanced pulsating impact load generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110905390.7A CN113638688A (en) | 2021-08-09 | 2021-08-09 | Enhanced pulsating impact load generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113638688A true CN113638688A (en) | 2021-11-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370226A (en) * | 2021-12-15 | 2022-04-19 | 西南石油大学 | Hydraulic variable-level small-pressure-drop strong-impact shock tool based on radio frequency identification |
| CN117967196A (en) * | 2024-04-01 | 2024-05-03 | 太原理工大学 | Enhanced pulsating impact load generation device |
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2021
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370226A (en) * | 2021-12-15 | 2022-04-19 | 西南石油大学 | Hydraulic variable-level small-pressure-drop strong-impact shock tool based on radio frequency identification |
| CN114370226B (en) * | 2021-12-15 | 2024-03-22 | 西南石油大学 | Hydraulic variable-stage small-pressure-drop strong-impact oscillating tool based on radio frequency identification |
| CN117967196A (en) * | 2024-04-01 | 2024-05-03 | 太原理工大学 | Enhanced pulsating impact load generation device |
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