CN113802979A - Hydraulic composite vibration impact pipe column - Google Patents
Hydraulic composite vibration impact pipe column Download PDFInfo
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- CN113802979A CN113802979A CN202110894997.XA CN202110894997A CN113802979A CN 113802979 A CN113802979 A CN 113802979A CN 202110894997 A CN202110894997 A CN 202110894997A CN 113802979 A CN113802979 A CN 113802979A
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- 239000002131 composite material Substances 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000004080 punching Methods 0.000 claims description 47
- 238000005553 drilling Methods 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims 2
- 238000009527 percussion Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 14
- 230000006872 improvement Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000003208 petroleum Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention relates to a hydraulic composite vibration impact pipe column, which comprises a torsional vibration impactor, a longitudinal vibration impactor and a drill bit which are sequentially connected to the lower end of a drill rod, wherein a core pipe is arranged in an inner cavity of a torsional vibration shell of the torsional vibration impactor, the top of the core pipe is supported at the center of an upper centralizer, a core pipe water inlet hole is distributed on the circumference of the upper part of the core pipe, a core pipe water outlet hole is distributed on the circumference of the lower part of the core pipe, an upper disc valve is connected to the lower end of the core pipe, a lower disc valve is arranged below the upper disc valve, a fan-shaped hammer is arranged on the periphery of the middle section of the core pipe and is positioned in a fan-shaped cavity of a hammering block, a hydraulic cavity is formed by the part of the fan-shaped cavity, which is larger than the fan-shaped hammer, and a vertical seam is arranged on the core pipe and is communicated with the corresponding hydraulic cavity; a spring seat is fixed above the anvil, the top of the spring seat is positioned below the water inlet hole of the core pipe, and a torsion spring connected with the core pipe is installed in the inner cavity of the spring seat. The hydraulic composite vibration impact pipe column can fully utilize hydraulic energy, so that the drill bit can rotate and simultaneously generate longitudinal vibration and circumferential torque, and the rock breaking efficiency is improved.
Description
Technical Field
The invention relates to a high-efficiency rock breaking tool suitable for medium-hard to hard strata, in particular to a hydraulic composite vibration impact pipe column, and belongs to the technical field of petroleum drilling equipment.
Background
Under the promotion of two factors of increasingly deficient petroleum resources and rapidly increased demand, the exploration and development of new areas are continuously expanded, and as petroleum exploration is continuously developed to deep wells and ultra-deep wells, more and more formations with medium and hard drilling and abrasive formations are developed.
The depth of an oil production well is continuously deepened, drilling is more and more complex in stratum, power loss along the way is large, the pressure holding effect of a liquid column on the bottom of the well is obvious, the drilling speed is low, tools are easy to damage, the drilling period is prolonged, the drilling cost is high, and the development process of an oil-gas field is severely restricted. Therefore, the increase of the drilling speed of deep wells and ultra-deep wells is an urgent need of various oil fields at home and abroad at present.
The vibration impact drilling technology is a new drilling technology developed on the basis of conventional rotary drilling, and a vibration impactor is connected above a drill bit. In the working process, the impacter can generate longitudinal periodic impact load, then the load is acted on the stratum through the drill bit, the effect of crushing rock under the combined action of the impact load and static pressure rotation is achieved, and the periodic impact load generated under the action of the vibration impacter is acted on the stratum rock through the drill bit, so that the rock is crushed in volume, and the drilling speed is greatly improved. In addition, the vibration impactor generates high-frequency impact to the drill bit periodically during working, and stick-slip vibration which may be generated during the working of the drill bit can be reduced or eliminated. Thus, on one hand, the mechanical drilling speed can be improved; on the other hand, the drill bit is protected to a certain extent, the service life of the drill bit is prolonged, and the times of tripping the drill bit are reduced, so that the cost of petroleum drilling is reduced.
Currently, various impactors are the main downhole power tools for increasing the mechanical drilling speed of deep wells. However, the conventional impacter applied to the field in China often forms vulnerable and weak parts due to more connecting and moving parts, and has the problem of short service life. Meanwhile, most of the drill bits applied to the medium-deep well are PDC drill bits, and the PDC drill bits often fail prematurely due to stick-slip vibration generated during rock breaking. Therefore, the development of new tools is imminent.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a hydraulic composite vibration impact tubular column which can fully utilize hydraulic energy, so that a drill bit can generate longitudinal vibration and circumferential torque while rotating to work, and the rock breaking efficiency is improved.
In order to solve the technical problem, the hydraulic composite vibration impact pipe column comprises a torsional vibration impactor, a longitudinal vibration impactor and a drill bit which are sequentially connected at the lower end of a drill rod, the torsional vibration impactor comprises a torsional impact outer shell, a core tube is arranged in the inner cavity of the torsional impact outer shell, the top of the core tube is supported at the center of the upper centralizer, the circumference of the upper centralizer is uniformly distributed with overflowing holes, the circumference of the upper part of the core pipe is uniformly distributed with core pipe water inlet holes, the circumference of the lower part of the core pipe is evenly distributed with core pipe water outlet holes, the lower end of the core pipe is connected with an upper disc valve, a lower disc valve is arranged below the upper disc valve, fan-shaped hammers are symmetrically arranged at the periphery of the middle section of the core pipe, the fan-shaped hammer is positioned in a fan-shaped cavity of the anvil, a hydraulic cavity is formed by the part of the fan-shaped cavity, which is larger than the fan-shaped hammer, and a vertical seam is arranged on the core tube and is communicated with the corresponding hydraulic cavity; a spring seat is fixed above the anvil, the top of the spring seat is positioned below the core pipe water inlet hole, and a torsion spring connected with the core pipe is installed in an inner cavity of the spring seat.
As an improvement of the invention, the periphery of the lower part of the anvil is screwed in an upper port of a hexagonal sleeve, external threads in the middle section of the hexagonal sleeve are screwed with internal threads in the lower port of the wrenching and punching outer shell, and an internal hexagonal port in the lower end of the hexagonal sleeve is sleeved on a hexagonal tenon in the middle section of the wrenching and punching lower joint.
As a further improvement of the invention, the lower disc valve is fixed on a first inner shoulder at the upper part of the hexagonal sleeve, an upper cover is arranged below the lower disc valve, the upper cover is positioned in an inner cavity of the hexagonal sleeve, a lower port of the upper cover is pressed on a second inner shoulder at the upper part of the hexagonal sleeve, and the upper end of the lower twisting joint is screwed in the upper cover.
As a further improvement of the invention, the upper centralizer is fixed below the conical internal thread at the upper part of the torsional impact outer shell.
As a further improvement of the invention, moving disc fan-shaped overflow slots are uniformly arranged among the blades of the upper disc valve, one blade of the upper disc valve is provided with a pressure-holding-preventing hole, and static disc fan-shaped overflow slots are uniformly arranged among the blades of the lower disc valve.
As a further improvement of the invention, the longitudinal vibration impactor comprises a longitudinal punching outer cylinder and a longitudinal punching lower joint which are connected with each other, a mandrel is arranged in an inner cavity of the longitudinal punching outer cylinder, a helical blade is arranged at the upper part of the mandrel, a plurality of mandrel water inlet holes are uniformly distributed on the circumference of the mandrel below the helical blade, a mandrel small-diameter section is arranged below the mandrel water inlet holes, the mandrel small-diameter section penetrates through a central hole of a partition plate, a shoulder of the mandrel is pressed on the upper end surface of the partition plate, and the periphery of the bottom of the partition plate is supported above a middle convex ring of the longitudinal punching outer cylinder; the upper part of the small-diameter section of the mandrel is symmetrically provided with upper mandrel pressure discharge holes, the bottom of the small-diameter section of the mandrel is symmetrically provided with lower mandrel pressure discharge holes, and the upper mandrel pressure discharge holes and the lower mandrel pressure discharge holes are distributed in a cross shape; an inner cover extending downwards is arranged below the partition plate, an annular discharge passage is arranged between the periphery of the inner cover and the inner wall of the longitudinal punching outer cylinder, and a top cover of the inner cover is screwed on the mandrel; the upper circumference of the inner cover is provided with an inner cover upper discharge hole which is flush with the mandrel upper discharge pressure hole, the lower circumference of the inner cover is provided with an inner cover lower discharge hole which is flush with the mandrel lower discharge pressure hole, and the inner cover upper discharge hole and the inner cover lower discharge hole are distributed in a cross shape; the inner cavity of the inner cover is provided with a punch hammer, and the punch hammer is sleeved on the periphery of the small-diameter section of the mandrel.
As a further improvement of the invention, the upper circumference of the punch hammer is symmetrically provided with punch hammer hydraulic grooves, the bottom of the punch hammer is provided with punch hammer tenons extending downwards, notches between the punch hammer tenons and the punch hammer hydraulic grooves are distributed in a cross shape, the punch hammer tenons are correspondingly embedded into the upper guide groove of the longitudinal punch lower joint, and the circumference below the upper guide groove is uniformly provided with a plurality of lower joint water inlet holes.
As a further improvement of the invention, the top of the mandrel is inserted in the center of the lower end face of the guide plate, the bottom of the guide plate is seated on the inner step at the upper part of the longitudinal punching outer cylinder, and a plurality of axially through flow-adjusting holes are uniformly distributed along the circumference of the guide plate.
As a further improvement of the invention, the top cover of the inner cover is positioned in a central hole of the convex ring in the middle of the outer cylinder, the inner ends of the water inlet holes of the mandrels respectively extend obliquely downwards to be communicated with the central hole of the mandrel, and the inner ends of the water inlet holes of the lower joints respectively extend obliquely downwards to be communicated with the central hole of the longitudinal punching lower joint.
As a further improvement of the invention, the lower end of the longitudinal punching outer cylinder is uniformly provided with outer cylinder tenons extending downwards, and each outer cylinder tenon is correspondingly inserted into the lower longitudinal groove of the longitudinal punching lower joint.
Compared with the prior art, the invention has the following beneficial effects: the core pipe of the torsional vibration impacter has strong rotation capacity, obvious torsional impact effect and can generate good circumferential torque on a drill bit. An inner hexagonal opening at the lower end of the hexagonal sleeve is matched with a hexagonal tenon of the torsional impact lower joint, so that the torque can be transmitted more reliably; the upper cover realizes the axial positioning of the torsional impact lower joint.
The high-frequency impact generated by the tool is applied to the drill bit on the basis that the drill string transmits the constant torque to the drill bit, the additional impact rock breaking energy is applied to the drill bit, the condition that the rock breaking energy of the drill bit at the bottom of the well is insufficient is improved, the inherent clamping and sliding problem of the PDC drill bit is relieved, the service life of the drill bit is prolonged, and the drilling timeliness is improved.
The tool is simple in structure, easy to implement, short in length, low in cost, capable of reducing unnecessary energy loss, capable of improving the utilization efficiency of the hydraulic impact power and convenient to popularize and apply in an oil field.
The tool of the torsional vibration impactor is free of a rubber part and an electronic part, and has more advantages in a high-temperature deep well; the structure is designed uniquely, even if the service life is prolonged and the work is stopped, the drill collar is just equivalent to a section of short drill collar, and the drill can still continue to drill as required without being started immediately; and the overall structure design is adopted, so that the risks such as well falling and tripping are avoided.
Fifthly, holding pressure at the upper end of a punch hammer of the longitudinal vibration impactor, discharging current at the lower end of the punch hammer, and enabling the punch hammer to move downwards; the lower end of the punch hammer is pressed, the upper end of the punch hammer is discharged, and the punch hammer moves upwards. So along with the continuous rotation of dabber, the upper end of strikeing the lower clutch is indulged in the reciprocating impact of impact hammer constantly, has realized the high-frequency vibration of drill bit to the broken rock efficiency of drill bit has been improved greatly.
Sixthly, the longitudinal vibration impactor fully utilizes hydraulic energy, enables the drill bit to generate longitudinal vibration while rotating, and is accompanied with pulse jet cavitation, so that the impactor can assist rock breaking and reduce the bottom hole pressure holding effect. The device overall structure is simple, easily realizes, and the cost is lower, easily installs and operates in practical application, and the fault rate is low, is convenient for at the on-the-spot popularization and application in oil field.
Drawings
FIG. 1 is a structural diagram of a hydraulic compound vibration impact string according to the present invention.
FIG. 2 is a front view of the hydraulic compound vibration impact string of the present invention.
FIG. 3 is a perspective view of the hydraulic compound vibration impact string of the present invention.
Fig. 4 is an enlarged view of the core tube and anvil portion of fig. 2.
Fig. 5 is a cross-sectional view taken along a-a in fig. 4.
Fig. 6 is an enlarged perspective view of the anvil of fig. 2.
Fig. 7 is an enlarged perspective view of the core tube of fig. 2.
FIG. 8 is a cross-sectional view of the longitudinal vibratory impactor of the invention traveling downward.
FIG. 9 is a sectional view of the longitudinal vibration impactor of the invention moving upward.
Fig. 10 is a perspective exploded view of the longitudinal vibration impactor of the present invention.
Fig. 11 is a perspective view of the longitudinal punch outer cylinder of fig. 8.
Fig. 12 is a perspective view of the mandrel of fig. 8.
Fig. 13 is a perspective view of the ram of fig. 8.
Fig. 14 is a perspective view of the inner cover of fig. 8.
Fig. 15 is a perspective view of the vertical punch lower sub of fig. 8.
In the figure: A. a torsional vibration impactor; 1. twisting and punching the outer shell; 2. an upper centralizer; 3. a core tube; 3a, a water inlet hole of the core pipe; 3b, a fan-shaped ram; 3c, vertically sewing; 3d, water outlet holes of the core pipes; 4. a spring seat; 4a torsion spring; 5. an anvil; 5a, a fan-shaped cavity; 6. an upper disc valve; 6a, preventing the pressure from being held; 7. a lower disc valve; 8. a hexagonal sleeve; 8a, middle section external threads; 8b, an inner hexagonal opening; 9. an upper cover; 10. twisting and punching a lower joint; hexagonal tenon 10a.
B. A longitudinal vibration impactor; 11. longitudinally punching the outer barrel; 11a, an outer cylinder middle convex ring; 11b, outer cylinder tenon; 11c, longitudinally punching an outer barrel clamp spring groove; 11d, a clamp spring; 11e. an annular drain channel; 12. a baffle; a flow straightening hole; 13. a mandrel; 13a, helical blades; 13b, a water inlet of the mandrel; 13c, pressure discharge holes are formed in the mandrel; 13d, discharging pressure holes below the mandrel; 14. a partition plate; 15. an inner cover; a discharge hole in the inner cover; an inner shroud lower drain hole; 16. punching a hammer; a ram hydraulic tank; 16b, inserting a tenon by using a punching hammer; 17. longitudinally punching a lower joint; upper guide grooves 17 a; 17b, a lower connector water inlet; 17c, a lower joint clamp spring groove; a lower longitudinal groove; C. a drill bit.
Detailed Description
As shown in FIG. 1, the hydraulic composite vibration impact string of the present invention includes a torsional vibration impactor A, a longitudinal vibration impactor B and a drill bit C, which are sequentially connected to the lower end of a drill pipe.
As shown in fig. 2 to 7, the torsional vibration impactor a comprises a torsional impact outer shell 1, a core tube 3 is arranged in an inner cavity of the torsional impact outer shell 1, the top of the core tube 3 is supported at the center of an upper centralizer 2, the upper centralizer 2 is fixed below a conical internal thread on the upper portion of the torsional impact outer shell 1, overflowing holes are uniformly distributed on the circumference of the upper centralizer 2, core tube water inlet holes 3a are uniformly distributed on the circumference of the upper portion of the core tube 3, core tube water outlet holes 3d are uniformly distributed on the circumference of the lower portion of the core tube 3, an upper disc valve 6 is connected to the lower end of the core tube 3, a lower disc valve 7 is arranged below the upper disc valve 6, a fan-shaped ram 3b is symmetrically arranged at the center of the middle section of the core tube 3, the fan-shaped ram 3b is located in a fan-shaped cavity 5a of an anvil 5, a hydraulic cavity is formed by the part, which is larger than the fan-shaped ram 3b, and a vertical seam 3c is arranged on the core tube 3 and communicated with the corresponding hydraulic cavity; a spring seat 4 is fixed above the anvil 5, the top of the spring seat 4 is positioned below the core tube water inlet hole 3a, and a torsion spring 4a connected with the core tube 3 is installed in the inner cavity of the spring seat 4.
The periphery of the lower part of the anvil 5 is screwed in an upper port of the hexagonal sleeve 8, a middle section external thread 8a of the hexagonal sleeve 8 is screwed with a lower port internal thread of the wrenching shell body 1, and an inner hexagonal port 8b at the lower end of the hexagonal sleeve 8 is sleeved on a hexagonal tenon 10a at the middle section of the wrenching lower joint 10.
The lower disc valve 7 is fixed on a first inner shoulder at the upper part of the hexagonal sleeve 8, an upper cover 9 is arranged below the lower disc valve 7, the upper cover 9 is positioned in an inner cavity of the hexagonal sleeve 8, a lower port of the upper cover 9 is pressed on a second inner shoulder at the upper part of the hexagonal sleeve 8, and the upper end of a lower twisting and punching joint 10 is screwed in the upper cover 9.
Evenly be equipped with the fan-shaped overfall groove of driving disk between the blade of upper disc valve 6, and be equipped with on the blade of upper disc valve 6 and prevent suppressing pressure hole 6a, evenly be equipped with the fan-shaped overfall groove of static disc between the blade of lower disc valve 7.
The water flow passes through the centralizer overflowing hole of the upper centralizer 2 and enters the inner cavity of the core pipe 3 from the core pipe water inlet hole 3a, when the overflowing areas of the upper disc valve 6 and the lower disc valve 7 are small, pressure building is generated, the water flow enters the hydraulic cavity of the anvil 5 from the vertical seam 3c of the core pipe 3, the fan-shaped hammer 3b of the core pipe 3 is pushed to rotate, and the upper end of the core pipe 3 drives the torsion spring 4a to twist and store energy; the lower end of the core tube 3 drives the upper disc valve 6 to rotate, so that when the upper disc valve 6 and the lower disc valve 7 are completely unobstructed, the hydraulic cavity discharges through the vertical seam 3c of the core tube 3 and the water outlet hole 3d of the core tube, the torsion spring 4a releases energy, and the fan-shaped hammer 3b of the core tube 3 impacts the anvil 5 to generate torsional impact. The core tube 3 has strong rotation capability, generates obvious torsional impact effect and can generate good circumferential torque at the drill bit. An inner hexagonal opening 8b at the lower end of the hexagonal sleeve 8 is matched with a hexagonal tenon 10a of the torsional impact lower joint 10, so that the torque can be transmitted more reliably; the upper cover 9 realizes the axial positioning of the lower torsional impact joint 10.
The upper disc valve 6 rotates to change the flow area of the lower disc valve 7, and hydraulic fluctuation is generated to act on the torsional impact lower joint 10 to generate longitudinal vibration. The longitudinal vibration frequency and amplitude can be adjusted by changing the shape of the blade of the disc valve, and a better acceleration effect is obtained.
As shown in fig. 8 to 15, the longitudinal vibration impactor B comprises a longitudinal punching outer cylinder 11 and a longitudinal punching lower joint 17 which are connected with each other, a mandrel 13 is arranged in an inner cavity of the longitudinal punching outer cylinder 11, a helical blade 13a is arranged at the upper part of the mandrel 13, a plurality of mandrel water inlet holes 13B are uniformly distributed on the circumference of the mandrel below the helical blade 13a, a small-diameter section of the mandrel is arranged below the mandrel water inlet hole 13B, the small-diameter section of the mandrel penetrates through a central hole of the partition plate 14, a shoulder of the mandrel is pressed on the upper end surface of the partition plate 14, and the periphery of the bottom of the partition plate 14 is supported above a convex ring in the middle part of the longitudinal punching outer cylinder 11; the upper part of the small-diameter section of the mandrel is symmetrically provided with upper mandrel pressure discharge holes 13c, the bottom of the small-diameter section of the mandrel is symmetrically provided with lower mandrel pressure discharge holes 13d, and the upper mandrel pressure discharge holes 13c and the lower mandrel pressure discharge holes 13d are distributed in a cross shape; an inner cover 15 extending downwards is arranged below the partition plate 14, an annular discharge passage 11e is arranged between the periphery of the inner cover 15 and the inner wall of the longitudinal flushing outer cylinder 11, and a top cover of the inner cover 15 is screwed on the mandrel 13.
The upper circumference of the inner cover 15 is provided with an inner cover upper discharge hole 15a which is parallel and level with the mandrel upper discharge hole 13c, the lower circumference of the inner cover 15 is provided with an inner cover lower discharge hole 15b which is parallel and level with the mandrel lower discharge hole 13d, and the inner cover upper discharge hole 15a and the inner cover lower discharge hole 15b are distributed in a cross shape; the inner cavity of the inner cover 15 is provided with a punch hammer 16, the punch hammer 16 is sleeved on the periphery of the small-diameter section of the mandrel, the upper circumference of the punch hammer 16 is symmetrically provided with punch hammer hydraulic grooves 16a, the bottom of the punch hammer 16 is provided with a punch hammer tenon 16b extending downwards, notches between the punch hammer tenons 16b and the punch hammer hydraulic grooves 16a are distributed in a cross shape, and the punch hammer tenon 16b is correspondingly embedded into an upper guide groove 17a of the longitudinal punch lower joint 17, so that the punch hammer 16 can only reciprocate up and down, and rotation during impact is avoided; a plurality of lower joint water inlet holes 17b are uniformly formed on the circumference of the lower portion of the upper guide groove 17a.
The top of the mandrel 13 is inserted in the center of the lower end face of the guide plate 12, the bottom of the guide plate 12 is seated on the upper inner step of the longitudinal punching outer cylinder 11, and a plurality of axially through rectifying holes 12a are uniformly distributed along the circumference of the guide plate 12.
The top cover of the inner cover 15 is positioned in the central hole of the convex ring 11a in the middle of the outer cylinder, so that an annular drainage channel 11e is naturally formed between the periphery of the inner cover and the inner wall of the longitudinal punching outer cylinder and is used for drainage of an upper cavity or a lower cavity of the punching hammer.
The inner ends of the mandrel water inlet holes 13b extend obliquely downwards to be communicated with the central hole of the mandrel, the inner ends of the lower connector water inlet holes 17b extend obliquely downwards to be communicated with the central hole of the longitudinal punching lower connector, and resistance in diversion flowing can be reduced.
As shown in fig. 8, 9 and 11, the lower end of the longitudinal punch outer cylinder 11 is uniformly provided with outer cylinder tenons 11b extending downwards, and each outer cylinder tenon 11b is correspondingly inserted into the lower longitudinal groove 17d of the longitudinal punch lower joint 17. The outer cylinder tenon 11b and the lower longitudinal groove 17d are mutually embedded, so that the radial positioning between the longitudinal punching outer cylinder 11 and the longitudinal punching lower joint 17 is realized, and the torque can be stably transmitted.
The inner wall of the lower part of the longitudinal punching outer cylinder 11 is provided with a longitudinal punching outer cylinder clamp spring groove 11c, the middle section circumference of the longitudinal punching lower joint 17 is provided with a lower joint clamp spring groove 17c, and a clamp spring 11d is embedded in the lower joint clamp spring groove 17c and the longitudinal punching outer cylinder clamp spring groove 11c together. The clamp spring 11d realizes axial positioning between the longitudinal punching outer cylinder 11 and the longitudinal punching lower joint 17, and prevents the longitudinal punching lower joint 17 from falling off.
As shown in fig. 8, the water flow is rectified by each rectifying hole 12a of the flow deflector 12 and uniformly flows to the helical blade 13a, the rotation of the helical blade 13a drives the mandrel 13 to rotate, when the water flow reaches the partition plate 14, the water flow enters the central hole of the mandrel from the mandrel water inlet hole 13b, when the mandrel 13 rotates until the pressure discharge hole 13c on the mandrel is aligned with the hydraulic ram groove 16a, the water flow enters the hydraulic ram groove 16a from the pressure discharge hole 13c on the mandrel, and the inner cover 15 closes the outer port of the hydraulic ram groove 16a to realize pressure holding; meanwhile, a seam at the lower end of the impact hammer mortise 16b is communicated with the inner cover lower discharge hole 15b and the annular discharge channel 11e, and a discharge channel is formed at the lower end of the impact hammer 16; at this stage, the upper end of the hammer 16 is pressed, the lower end is discharged, and the hammer 16 moves downwards.
As shown in fig. 9, when the mandrel 13 is rotated until the lower pressure discharge hole 13d of the mandrel is aligned with the slit at the lower end of the hammer mortise 16b, the inner cover 15 blocks the slit at the lower end of the hammer mortise 16b from the outside to form a pressure hold at the lower end of the hammer; meanwhile, the punch hammer 16 blocks the pressure discharge hole 13c on the mandrel, a hydraulic groove 16a of the punch hammer is communicated with a discharge hole 15a on the inner cover and an annular discharge channel 11e, and a discharge channel is formed at the upper end of the punch hammer 16; at this stage, the lower end of the hammer 16 is pressed, the upper end is discharged, and the hammer 16 moves upwards.
Thus, with the continuous rotation of the mandrel 13, the impact hammer 16 continuously and reciprocally impacts the upper end of the longitudinal impact lower joint 17, so that the high-frequency vibration of the drill bit is realized, and the rock breaking efficiency of the drill bit is greatly improved. The inner cover 15 is driven by the mandrel 13 to rotate, so that the turbulent flow effect on the drilling fluid can be realized, the drilling fluid flow generates a pulse effect, the rock breaking and the shaft bottom rock cleaning of a drill bit are facilitated, and the drilling speed is improved.
The upper pressure discharge hole 13c of the mandrel and the lower pressure discharge hole 13d of the mandrel are distributed in a cross shape, the upper discharge hole 15a of the inner cover and the lower discharge hole 15b of the inner cover are distributed in a cross shape, so that when the upper pressure discharge hole 13c of the mandrel is communicated with the upper discharge hole 15a of the inner cover, a notch between the plunger tenons 16b and the hydraulic groove 16a of the plunger are distributed in a cross shape, and when the upper cavity of the plunger is suppressed, the lower cavity is inevitably discharged to the annular discharge channel 11 e; when the lower cavity of the impact hammer is pressed, the upper cavity is necessarily drained.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention. Technical features of the present invention which are not described may be implemented by or using the prior art, and will not be described herein.
Claims (10)
1. The utility model provides a compound vibration of water conservancy strikes tubular column, includes torsional vibration impacter, longitudinal vibration impacter and the drill bit of connecting gradually the drilling rod lower extreme, its characterized in that: the torsional vibration impactor comprises a torsional impact outer shell, a core tube is arranged in an inner cavity of the torsional impact outer shell, the top of the core tube is supported at the center of an upper centralizer, overflowing holes are uniformly distributed on the circumference of the upper centralizer, core tube water inlet holes are uniformly distributed on the circumference of the upper part of the core tube, core tube water outlet holes are uniformly distributed on the circumference of the lower part of the core tube, an upper disc valve is connected to the lower end of the core tube, a lower disc valve is arranged below the upper disc valve, fan-shaped hammers are symmetrically arranged on the center of the periphery of the middle section of the core tube, the fan-shaped hammers are positioned in a fan-shaped cavity of an anvil, a hydraulic cavity is formed by the part of the fan-shaped cavity larger than the fan-shaped hammers, and a vertical seam which is arranged on the core tube is communicated with the corresponding hydraulic cavity; a spring seat is fixed above the anvil, the top of the spring seat is positioned below the core pipe water inlet hole, and a torsion spring connected with the core pipe is installed in an inner cavity of the spring seat.
2. The hydraulic composite vibratory impulse pipe string of claim 1, wherein: the periphery of the lower portion of the anvil is screwed in an upper port of the hexagonal sleeve, external threads in the middle section of the hexagonal sleeve are screwed with internal threads in a lower port of the wrenching and punching outer shell, and an internal hexagonal port in the lower end of the hexagonal sleeve is sleeved on a hexagonal tenon in the middle section of the wrenching and punching lower connector.
3. The hydraulic composite vibratory impulse pipe string of claim 1, wherein: the lower disc valve is fixed on a first inner circular bead on the upper portion of the hexagonal sleeve, an upper cover is arranged below the lower disc valve, the upper cover is located in an inner cavity of the hexagonal sleeve, a lower port of the upper cover is pressed on a second inner circular bead on the upper portion of the hexagonal sleeve, and the upper end of the torsional impact lower connector is screwed in the upper cover.
4. The hydraulic composite vibratory impulse pipe string of claim 1, wherein: the upper centralizer is fixed below the conical internal thread on the upper part of the torsional impact shell.
5. The hydraulic composite vibratory impulse pipe string of claim 1, wherein: evenly be equipped with the fan-shaped chute of moving disk between the blade of upper plate valve, and be equipped with on the blade of upper plate valve and prevent suppressing the pressure hole, evenly be equipped with the fan-shaped chute of quiet dish between the blade of lower plate valve.
6. The hydraulic composite vibratory percussion string according to any one of claims 1 to 5, wherein: the longitudinal vibration impactor comprises a longitudinal punching outer cylinder and a longitudinal punching lower connector which are connected with each other, a mandrel is arranged in an inner cavity of the longitudinal punching outer cylinder, a helical blade is arranged at the upper part of the mandrel, a plurality of mandrel water inlet holes are uniformly distributed on the circumference of the mandrel below the helical blade, a small-diameter section of the mandrel is arranged below the mandrel water inlet holes, the small-diameter section of the mandrel penetrates through a central hole of a partition plate, a shoulder of the mandrel is pressed on the upper end face of the partition plate, and the periphery of the bottom of the partition plate is supported above a middle convex ring of the longitudinal punching outer cylinder; the upper part of the small-diameter section of the mandrel is symmetrically provided with upper mandrel pressure discharge holes, the bottom of the small-diameter section of the mandrel is symmetrically provided with lower mandrel pressure discharge holes, and the upper mandrel pressure discharge holes and the lower mandrel pressure discharge holes are distributed in a cross shape; an inner cover extending downwards is arranged below the partition plate, an annular discharge passage is arranged between the periphery of the inner cover and the inner wall of the longitudinal punching outer cylinder, and a top cover of the inner cover is screwed on the mandrel; the upper circumference of the inner cover is provided with an inner cover upper discharge hole which is flush with the mandrel upper discharge pressure hole, the lower circumference of the inner cover is provided with an inner cover lower discharge hole which is flush with the mandrel lower discharge pressure hole, and the inner cover upper discharge hole and the inner cover lower discharge hole are distributed in a cross shape; the inner cavity of the inner cover is provided with a punch hammer, and the punch hammer is sleeved on the periphery of the small-diameter section of the mandrel.
7. The hydraulic composite vibratory impulse pipe string of claim 6, wherein: the upper portion circumference symmetry of impact hammer is equipped with impact hammer hydraulic groove, the bottom of impact hammer is equipped with downwardly extending's impact hammer tenon, and notch between the impact hammer tenon is the cross with impact hammer hydraulic groove and distributes, the impact hammer tenon corresponds the embedding indulge in the upper portion guide way of dashing the lower clutch, evenly be equipped with a plurality of lower clutch inlet openings on the circumference of upper portion guide way below.
8. The hydraulic composite vibratory impulse pipe string of claim 6, wherein: the top of the mandrel is inserted in the center of the lower end face of the guide plate, the bottom of the guide plate is seated on the inner step of the upper part of the longitudinal punching outer barrel, and a plurality of axially through flow-adjusting holes are uniformly distributed along the circumference of the guide plate.
9. The hydraulic composite vibratory impulse pipe string of claim 7, wherein: the top cover of the inner cover is positioned in a central hole of the convex ring in the middle of the outer barrel, the inner end of each mandrel water inlet hole respectively extends downwards in an inclined mode and is communicated with the central hole of the mandrel, and the inner end of each lower joint water inlet hole respectively extends downwards in an inclined mode and is communicated with the central hole of the longitudinal punching lower joint.
10. The hydraulic composite vibratory impulse pipe string of claim 6, wherein: the lower end of the longitudinal punching outer barrel is uniformly provided with outer barrel tenons extending downwards, and each outer barrel tenon is correspondingly inserted into the lower longitudinal groove of the longitudinal punching lower joint.
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