CN113802979B - Hydraulic composite vibration impact pipe column - Google Patents
Hydraulic composite vibration impact pipe column Download PDFInfo
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- CN113802979B CN113802979B CN202110894997.XA CN202110894997A CN113802979B CN 113802979 B CN113802979 B CN 113802979B CN 202110894997 A CN202110894997 A CN 202110894997A CN 113802979 B CN113802979 B CN 113802979B
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- 239000002131 composite material Substances 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000004080 punching Methods 0.000 claims description 64
- 238000005553 drilling Methods 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000011435 rock Substances 0.000 abstract description 14
- 230000006872 improvement Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 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
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
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 the inner cavity of a torsional impact outer shell of the torsional vibration impactor, the top of the core pipe is supported at the center of an upper centralizer, core pipe water inlets are distributed on the circumference of the upper part of the core pipe, core pipe water outlets are distributed on the circumference of the lower part of the core pipe, 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, a fan-shaped ram is arranged on the periphery of the middle section of the core pipe, the fan-shaped ram is positioned in a fan-shaped cavity of an anvil, a hydraulic cavity is formed by the part of the fan-shaped cavity which is larger than the fan-shaped ram, and a vertical seam is arranged on the core pipe and 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 of the core tube, and a torsion spring connected with the core tube is arranged 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 rotates and simultaneously generates 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 stratum, 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 sharply increased demand, exploration and development of new areas are continuously expanded, and as petroleum exploration is continuously developed to deep wells and ultra-deep wells, medium-hard and above-hard stratum and abrasive stratum are increasingly drilled.
The depth of the oil production well is increased continuously, the drilling is more and more complicated when meeting the stratum, the power loss is large along the way, the pressure holding effect of the liquid column on the bottom of the well is obvious, the drilling speed is low, and tools are easy to damage, so that the drilling period is prolonged, the drilling cost is high, and the development process of the oil-gas field is seriously restricted. Therefore, the improvement 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 technique of vibration percussion drilling is a new technique of drilling developed on the basis of conventional rotary drilling, in which a vibration impactor is attached to the upper surface of a drill bit. In the working process, the impactor can generate longitudinal periodical impact load, then the load is acted on the stratum through the drill bit, the effect of crushing the rock under the combined action of the impact load and static pressure rotation is achieved, and the periodical impact load generated by the action of the vibration impactor acts 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 can periodically act on the drill bit by generating high-frequency impact in the working process, so that the stick-slip vibration possibly generated in the working process of the drill bit can be reduced or eliminated. In this way, on the one hand, the rate of penetration can be increased; on the other hand, the drill bit is protected to a certain extent, the service time of the drill bit is prolonged, and the number of times of tripping is reduced, so that the cost of petroleum drilling is reduced.
Currently, various impactors are the primary downhole power tools for increasing the rate of deep well mechanical drilling. 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 deep well are PDC drill bits, and the PDC drill bits often fail prematurely due to stick-slip vibration generated during rock breaking. Therefore, there is an urgent need to develop new tools.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide the hydraulic composite vibration impact pipe column, which can fully utilize hydraulic energy to ensure that a drill bit generates longitudinal vibration and circumferential torque while rotating, thereby improving the rock breaking efficiency.
In order to solve the technical problems, the hydraulic composite vibration impact pipe column 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 the torsional vibration impactor comprises a torsional impact outer shell, a core pipe is arranged in the inner cavity of the torsional impact outer shell, the top of the core pipe is supported at the center of an upper centralizer, flow through holes are uniformly distributed on the circumference of the upper centralizer, core pipe water inlets are uniformly distributed on the circumference of the upper part of the core pipe, core pipe water outlets are uniformly 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, fan-shaped hammers are symmetrically arranged in the center of the periphery of the middle section of the core pipe, the fan-shaped hammers are positioned in fan-shaped cavities of an anvil, the parts of the fan-shaped cavities larger than the fan-shaped hammers form a hydraulic cavity, and vertical slits are arranged on the core pipe and are communicated with corresponding hydraulic cavities; the upper part of the anvil is fixedly provided with a spring seat, the top of the spring seat is positioned below the water inlet hole of the core tube, and the inner cavity of the spring seat is provided with a torsion spring connected with the core tube.
As an improvement of the invention, the lower periphery of the anvil is screwed in the upper port of the hexagonal sleeve, the middle section external thread of the hexagonal sleeve is screwed with the lower port internal thread of the torsion-punching outer shell, and the inner hexagonal opening at the lower end of the hexagonal sleeve is sleeved on the hexagonal tenon at the middle section of the torsion-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 the 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 torsional punching lower connector is screwed in the upper cover.
As a further improvement of the invention, the upper centralizer is fixed under the conical internal thread of the upper portion of the torsion punch outer housing.
As a further improvement of the invention, the movable disc sector-shaped flow grooves are uniformly arranged between the blades of the upper disc valve, one blade of the upper disc valve is provided with a pressure-blocking preventing hole, and the static disc sector-shaped flow grooves are uniformly arranged between 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, wherein an inner cavity of the longitudinal punching outer cylinder is provided with a mandrel, the upper part of the mandrel is provided with a spiral blade, a plurality of mandrel water inlets are uniformly distributed on the circumference of the mandrel below the spiral blade, a mandrel small-diameter section is arranged below the mandrel water inlets, the mandrel small-diameter section passes through a central hole of a separation plate, a mandrel shoulder is pressed on the upper end surface of the separation plate, and the bottom periphery of the separation plate is supported above a middle convex ring of the longitudinal punching outer cylinder; the upper part of the mandrel small-diameter section is symmetrically provided with mandrel upper pressure discharge holes, the bottom of the mandrel small-diameter section is symmetrically provided with mandrel lower pressure discharge holes, and the mandrel upper pressure discharge holes and the mandrel lower pressure discharge holes are distributed in a cross shape; an inner cover extending downwards is arranged below the partition plate, an annular drainage channel 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 circumference of the upper part of the inner cover is provided with an inner cover upper drain hole which is flush with the mandrel upper drain hole, the circumference of the lower part of the inner cover is provided with an inner cover lower drain hole which is flush with the mandrel lower drain hole, and the inner cover upper drain hole and the inner cover lower drain 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 impact hammer is symmetrically provided with impact hammer hydraulic grooves, the bottom of the impact hammer is provided with impact hammer tenons extending downwards, the notch between the impact hammer tenons and the impact hammer hydraulic grooves are distributed in a cross shape, the impact hammer tenons are correspondingly embedded into the upper guide grooves of the longitudinal impact lower connectors, and a plurality of lower connector water inlets are uniformly arranged on the circumference below the upper guide grooves.
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 arranged on the upper inner step of the longitudinal punching outer cylinder, and a plurality of axially-through rectifying 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 the central hole of the convex ring in the middle of the outer cylinder, the inner ends of the water inlet holes of the mandrel respectively extend downwards obliquely and are communicated with the central hole of the mandrel, and the inner ends of the water inlet holes of the lower joint respectively extend downwards obliquely and are communicated with the central hole of the 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 which extend downwards, and each outer cylinder tenon is correspondingly inserted into a lower longitudinal groove of the longitudinal punching lower joint.
Compared with the prior art, the invention has the following beneficial effects: the torsional vibration impactor has the advantages that the core tube of the torsional vibration impactor is high in rotation capability, the torsional impact effect is obvious, and good circumferential torque can be generated on a drill bit. The inner hexagonal opening at the lower end of the hexagonal sleeve is matched with the hexagonal tenon of the torsional punching lower joint, so that torque can be transmitted more reliably; the upper cover realizes the axial positioning of the torsional punching lower joint.
The high-frequency impact generated by the tool applies additional impact rock breaking energy to the drill bit on the basis of constant torque transmitted to the drill bit by the drill string, and the condition that the rock breaking energy of the drill bit at the bottom of the well is insufficient is improved, so that the inherent slip problem of the PDC drill bit is relieved, the service life of the drill bit is prolonged, and the drilling time efficiency is improved.
The tool is simple in structure, easy to realize, short in length, low in cost, capable of reducing unnecessary energy loss, improving the utilization efficiency of hydraulic impact energy, and convenient to popularize and apply in oilfield sites.
The tool of the torsional vibration impactor is internally provided with no rubber parts or electronic parts, so that the torsional vibration impactor has more advantages in a high-temperature deep well; the structure design is unique, even if the service life is reached and the work is stopped, the drill collar is equivalent to a short drill collar, the drill is not required to be started immediately, and the drilling can be continued as required; and the overall structural design is adopted, and risks such as well falling tripping are avoided.
Fifthly, suppressing pressure at the upper end of a punch hammer of the longitudinal vibration impactor, discharging flow at the lower end of the punch hammer, and descending the punch hammer; the lower end of the impact hammer is pressed, the upper end of the impact hammer leaks, and the impact hammer moves upwards. So along with the continuous rotation of dabber, the punch hammer constantly reciprocal impact is indulged towards the upper end of lower clutch, has realized the high-frequency vibration of drill bit to the broken rock efficiency of drill bit has been improved greatly.
The sixth-degree longitudinal vibration impactor fully utilizes hydraulic energy, so that the drill bit can generate longitudinal vibration while rotating and has pulse jet cavitation, and the impactor can reduce the holding effect of the bottom of the well while assisting in breaking rock. The device has the advantages of simple overall structure, easy realization, lower cost, easy installation and operation in practical application, low failure rate and convenient popularization and application in oilfield sites.
Drawings
FIG. 1 is a block diagram of a hydraulic compound vibration impact pipe column in the present invention.
Fig. 2 is a front view of a hydraulic compound vibration impact pipe column of the present invention.
Fig. 3 is a perspective view of a hydraulic compound vibratory 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 present invention with the longitudinal vibration impactor down.
Fig. 9 is a cross-sectional view of the present invention with the longitudinal vibration impactor in an up-going position.
Fig. 10 is a perspective exploded view of a longitudinal vibration impactor according to the present invention.
Fig. 11 is a perspective view of the longitudinal punching 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 longitudinal punch down joint 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 core pipe water inlet hole; 3b, a fan-shaped ram; 3c, vertical seam; 3d, a core pipe water outlet hole; 4. a spring seat; 4a, torsion springs; 5. a stock; 5a, a fan-shaped cavity; 6. a top disk valve; 6a, preventing the pressure from being blocked; 7. a lower disc valve; 8. a hexagonal sleeve; 8a, middle external threads; 8b, inner hexagonal opening; 9. an upper cover; 10. twisting and punching the lower joint; 10a, hexagonal tenons.
B. A longitudinal vibratory impactor; 11. a longitudinal punching outer cylinder; 11a, a convex ring at the middle part of the outer cylinder; 11b, outer cylinder tenons; 11c, longitudinally punching an outer barrel clamp spring groove; 11d, clamping springs; 11e, an annular drainage channel; 12. a deflector; 12a, rectifying holes; 13. a mandrel; 13a, helical blades; 13b, a mandrel water inlet hole; 13c, a pressure discharge hole is formed in the mandrel; 13d, a mandrel lower pressure discharge hole; 14. a partition plate; 15. an inner cover; 15a, a drain hole is formed on the inner cover; 15b, an inner cover lower drain hole; 16. a punch hammer; 16a, a hydraulic groove of a hammer; 16b, inserting tenons by a hammer; 17. punching a lower joint longitudinally; 17a, upper guide grooves; 17b, a lower joint water inlet hole; 17c, a lower joint snap spring groove; 17d. Lower longitudinal grooves; C. a drill bit.
Detailed Description
As shown in fig. 1, the hydraulic composite vibration impact pipe column of the present invention comprises 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 punching outer shell 1, a core tube 3 is arranged in an inner cavity of the torsional punching 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 at the upper part of the torsional punching outer shell 1, overflow holes are uniformly distributed on the circumference of the upper centralizer 2, core tube water inlets 3a are uniformly distributed on the upper circumference of the core tube 3, core tube water outlets 3d are uniformly distributed on the lower circumference 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 sector-shaped hammer 3b is symmetrically arranged at the center of the periphery of the middle section of the core tube 3, the sector-shaped hammer 3b is positioned in a sector-shaped cavity 5a of an anvil 5, a part larger than the sector-shaped hammer 3b forms a hydraulic cavity, and a vertical slit 3c is arranged on the core tube 3 to be communicated with a 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 pipe water inlet hole 3a, and a torsion spring 4a connected with the core pipe 3 is installed in the inner cavity of the spring seat 4.
The lower periphery of the anvil 5 is screwed in the upper port of the hexagonal sleeve 8, the middle section external thread 8a of the hexagonal sleeve 8 is screwed with the inner thread of the lower port of the torsion-punching outer shell 1, and the inner hexagonal opening 8b at the lower end of the hexagonal sleeve 8 is sleeved on the hexagonal tenon 10a at the middle section of the torsion-punching 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 the inner cavity of the hexagonal sleeve 8, the 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 the torsional punching lower joint 10 is screwed in the upper cover 9.
The blades of the upper disc valve 6 are uniformly provided with movable disc sector-shaped flow grooves, one blade of the upper disc valve 6 is provided with an anti-holding pressure hole 6a, and the blades of the lower disc valve 7 are uniformly provided with static disc sector-shaped flow grooves.
The water flow passes through the centralizer overflow hole of the upper centralizer 2, enters the inner cavity of the core tube 3 from the core tube water inlet hole 3a, generates pressure holding when the overflow area of the upper disc valve 6 and the lower disc valve 7 is small, enters the hydraulic cavity of the anvil 5 from the vertical slot 3c of the core tube 3, pushes the sector-shaped ram 3b of the core tube 3 to rotate, and drives the torsion spring 4a to twist and store energy at the upper end of the core tube 3; when the lower end of the core tube 3 drives the upper disc valve 6 to rotate and the upper disc valve 6 and the lower disc valve 7 are completely unobstructed, the hydraulic cavity discharges through the vertical slot 3c of the core tube 3 and the core tube water outlet 3d, and the torsion spring 4a releases energy to enable the fan-shaped ram 3b of the core tube 3 to strike the anvil 5 to generate torsional punching. The core tube 3 has strong rotation capability, obvious torsional impact effect and good circumferential torque on the drill bit. The inner hexagonal opening 8b at the lower end of the hexagonal sleeve 8 is matched with the hexagonal tenon 10a of the torsional punching lower joint 10, so that torque can be transmitted more reliably; the upper cover 9 achieves axial positioning of the twist punch lower joint 10.
The upper disc valve 6 rotates to change the flow passage area with the lower disc valve 7, thereby generating hydraulic fluctuation, and the hydraulic fluctuation acts on the torsional 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, so that a better speed-increasing 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, wherein a mandrel 13 is arranged in an inner cavity of the longitudinal punching outer cylinder 11, a spiral blade 13a is arranged at the upper part of the mandrel 13, a plurality of mandrel water inlets 13B are uniformly distributed on the circumference of the mandrel below the spiral blade 13a, a mandrel small-diameter section is arranged below the mandrel water inlets 13B, the mandrel small-diameter section passes through a central hole of a separation plate 14 and a mandrel shoulder is pressed on the upper end surface of the separation plate 14, and the bottom periphery of the separation plate 14 is supported above a middle convex ring of the longitudinal punching outer cylinder 11; the upper part of the mandrel small-diameter section is symmetrically provided with mandrel upper pressure discharge holes 13c, the bottom of the mandrel small-diameter section is symmetrically provided with mandrel lower pressure discharge holes 13d, and the mandrel upper pressure discharge holes 13c and the mandrel lower 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 drainage channel 11e is arranged between the outer periphery of the inner cover 15 and the inner wall of the longitudinal punching outer cylinder 11, and the top cover of the inner cover 15 is screwed on the mandrel 13.
An inner cover upper drain hole 15a which is flush with the mandrel upper drain hole 13c is arranged on the upper circumference of the inner cover 15, an inner cover lower drain hole 15b which is flush with the mandrel lower drain hole 13d is arranged on the lower circumference of the inner cover 15, and the inner cover upper drain hole 15a and the inner cover lower drain 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, punch hammer hydraulic grooves 16a are symmetrically formed in the circumference of the upper part of the punch hammer 16, punch hammer tenons 16b extending downwards are formed in the bottom of the punch hammer 16, the notch between the punch hammer tenons 16b and the punch hammer hydraulic grooves 16a are distributed in a cross shape, and the punch hammer tenons 16b are correspondingly embedded into the upper guide grooves 17a of the longitudinal punch lower connector 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 arranged on the circumference below the upper guide groove 17a.
The top of the mandrel 13 is inserted in the center of the lower end surface 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 the upper cavity or the lower cavity of the punching hammer.
The inner ends of the mandrel water inlet holes 13b extend downwards obliquely and are communicated with the mandrel central holes, and the inner ends of the lower joint water inlet holes 17b extend downwards obliquely and are communicated with the longitudinal lower joint central holes, so that the resistance in direction-changing flow can be reduced.
As shown in fig. 8, 9 and 11, the lower end of the longitudinal punching outer cylinder 11 is uniformly provided with outer cylinder tenons 11b extending downward, and each outer cylinder tenon 11b is inserted into a lower longitudinal groove 17d of the longitudinal punching lower joint 17. The outer cylinder tenons 11b are mutually embedded with the lower longitudinal grooves 17d, so that radial positioning between the longitudinal punching outer cylinder 11 and the longitudinal punching lower joint 17 is realized, and torque can be stably transmitted.
The lower inner wall of the longitudinal punching outer cylinder 11 is provided with a longitudinal punching outer cylinder clamp spring groove 11c, the circumference of the middle section of the longitudinal punching lower joint 17 is provided with a lower joint clamp spring groove 17c, and the lower joint clamp spring groove 17c and the longitudinal punching outer cylinder clamp spring groove 11c are embedded with a clamp spring 11d together. The clamping spring 11d realizes the axial positioning between the longitudinal punching outer cylinder 11 and the longitudinal punching lower connector 17 and prevents the longitudinal punching lower connector 17 from falling off.
As shown in fig. 8, the water flow is rectified by each rectifying hole 12a of the guide plate 12, and uniformly flows to the spiral blade 13a, the rotation of the spiral blade 13a drives the mandrel 13 to rotate, when the water flow reaches the partition plate 14, the water flow enters the central pore canal of the mandrel from the mandrel water inlet hole 13b, when the mandrel 13 rotates until the mandrel upper pressure discharge hole 13c is aligned with the hammer hydraulic groove 16a, the water flow enters the hammer hydraulic groove 16a from the mandrel upper pressure discharge hole 13c, and the outer port of the hammer hydraulic groove 16a is closed by the inner cover 15 to realize pressure holding; simultaneously, a seam at the lower end of the plunger tenon 16b is communicated with the lower drain hole 15b of the inner cover and the annular drain channel 11e, and a drain channel is formed at the lower end of the plunger 16; at this stage, the upper end of the ram 16 is pressurized, the lower end is discharged, and the ram 16 descends.
As shown in fig. 9, when the mandrel 13 rotates until the mandrel lower pressure discharge hole 13d is aligned with the slit at the lower end of the ram tenon 16b, the inner cover 15 seals the slit at the lower end of the ram tenon 16b from the outside, and forms a pressure hold at the lower end of the ram; simultaneously, the punching hammer 16 seals the pressure discharge hole 13c on the mandrel, the punching hammer hydraulic groove 16a is communicated with the discharge hole 15a and the annular discharge channel 11e on the inner cover, and a discharge channel is formed at the upper end of the punching hammer 16; at this stage, the lower end of the ram 16 is pressurized, the upper end is discharged, and the ram 16 moves upward.
So along 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, thereby realizing high-frequency vibration of the drill bit and greatly improving the rock breaking efficiency of the drill bit. Because the inner cover 15 is driven to rotate by the mandrel 13, the turbulence effect on the drilling fluid can be realized, so that the drilling fluid flow generates a pulse effect, the rock breaking of the drill bit and the rock cleaning at the bottom of the well are facilitated, and the drilling speed is improved.
The mandrel upper pressure discharge hole 13c and the mandrel lower pressure discharge hole 13d are in cross-shaped distribution, the inner cover upper pressure discharge hole 15a and the inner cover lower pressure discharge hole 15b are in cross-shaped distribution, so that when the mandrel upper pressure discharge hole 13c is communicated with the inner cover upper pressure discharge hole 15a, a notch between the ram tenon 16b and the ram hydraulic groove 16a are in cross-shaped distribution, and when the ram upper cavity is pressurized, the lower cavity inevitably leaks to the annular pressure discharge channel 11 e; when the lower cavity of the impact hammer is pressurized, the upper cavity is necessarily drained.
The foregoing description is only of a preferred embodiment of the invention and is not intended to limit the scope of the invention. In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention. The technical features of the present invention that are not described may be implemented by or using the prior art, and are not described herein.
Claims (9)
1. The utility model provides a hydraulic power compound vibration impact tubular column, includes torsional vibration impacter, longitudinal vibration impacter and the drill bit of connecting gradually at the drilling rod lower extreme, its characterized in that: the torsional vibration impactor comprises a torsional punching outer shell, a core tube is arranged in the cavity of the torsional punching outer shell, the top of the core tube is supported at the center of an upper centralizer, overflow holes are uniformly distributed on the circumference of the upper centralizer, core tube water inlets are uniformly distributed on the circumference of the upper part of the core tube, core tube water outlets 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 rams are symmetrically arranged at the center of the periphery of the middle section of the core tube, the fan-shaped rams are positioned in fan-shaped cavities of an anvil, the parts of the fan-shaped cavities larger than the fan-shaped rams form hydraulic cavities, and vertical slits are formed in the core tube and are communicated with corresponding hydraulic cavities; a spring seat is fixed above the anvil, the top of the spring seat is positioned below the water inlet of the core tube, and a torsion spring connected with the core tube is arranged in the inner cavity of the spring seat;
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 spiral blade is arranged on the upper portion of the mandrel, a plurality of mandrel water inlets are uniformly distributed on the circumference of the mandrel below the spiral blade, a mandrel small-diameter section is arranged below the mandrel water inlets, the mandrel small-diameter section passes through a central hole of a separation plate and a mandrel shoulder is pressed on the upper end face of the separation plate, and the periphery of the bottom of the separation plate is supported above a middle convex ring of the longitudinal punching outer cylinder; the upper part of the mandrel small-diameter section is symmetrically provided with mandrel upper pressure discharge holes, the bottom of the mandrel small-diameter section is symmetrically provided with mandrel lower pressure discharge holes, and the mandrel upper pressure discharge holes and the mandrel lower pressure discharge holes are distributed in a cross shape; an inner cover extending downwards is arranged below the partition plate, an annular drainage channel 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 circumference of the upper part of the inner cover is provided with an inner cover upper drain hole which is flush with the mandrel upper drain hole, the circumference of the lower part of the inner cover is provided with an inner cover lower drain hole which is flush with the mandrel lower drain hole, and the inner cover upper drain hole and the inner cover lower drain 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.
2. The hydro-composite vibratory impact string of claim 1, wherein: the lower periphery of the anvil is screwed in the upper port of the hexagonal sleeve, the middle section external thread of the hexagonal sleeve is screwed with the inner thread of the lower port of the torsion outer shell, and the inner hexagonal opening at the lower end of the hexagonal sleeve is sleeved on the hexagonal tenon at the middle section of the torsion lower joint.
3. The hydro-composite vibratory impact string of claim 2, wherein: 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 and positioned in the 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 torsional punching lower connector is screwed in the upper cover.
4. The hydro-composite vibratory impact string of claim 1, wherein: the upper centralizer is fixed below the conical internal thread at the upper part of the torsional punching outer shell.
5. The hydro-composite vibratory impact string of claim 1, wherein: the fan-shaped runner of movable disk is evenly equipped with between the blade of upper disc valve, and is equipped with on one blade of upper disc valve and prevents holding down the pressure hole, evenly be equipped with the fan-shaped runner of quiet disk between the blade of lower disc valve.
6. The hydro-composite vibratory impact string of claim 1, wherein: the upper circumference symmetry of ram is equipped with ram hydraulic groove, the bottom of ram is equipped with the ram tenon that downwardly extending, and the notch between the ram tenon is cross-shaped with ram hydraulic groove and distributes, ram tenon corresponds the embedding in the upper guide way of vertical punching lower clutch, evenly be equipped with a plurality of lower clutch inlet openings on the circumference of upper guide way below.
7. The hydro-composite vibratory impact string of claim 1, 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 arranged on the upper inner step of the longitudinal punching outer cylinder, and a plurality of axially-through rectifying holes are uniformly distributed along the circumference of the guide plate.
8. The hydro-composite vibratory impact string of claim 6, wherein: the top cover of the inner cover is positioned in the central hole of the middle convex ring of the longitudinal punching outer cylinder, the inner end of each mandrel water inlet hole extends downwards obliquely and is communicated with the central hole of the mandrel, and the inner end of each lower joint water inlet hole extends downwards obliquely and is communicated with the central hole of the longitudinal punching lower joint.
9. The hydro-composite vibratory impact string of claim 1, wherein: the lower end of the longitudinal punching outer cylinder is uniformly provided with outer cylinder tenons which extend downwards, and each outer cylinder tenon is correspondingly inserted into a longitudinal groove at the lower part of the longitudinal punching lower joint.
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