CN106593296A - Underground double-acting accelerator - Google Patents

Underground double-acting accelerator Download PDF

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Publication number
CN106593296A
CN106593296A CN201611159804.1A CN201611159804A CN106593296A CN 106593296 A CN106593296 A CN 106593296A CN 201611159804 A CN201611159804 A CN 201611159804A CN 106593296 A CN106593296 A CN 106593296A
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CN
China
Prior art keywords
piston
commutation
filter cylinder
hole
epimere
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Granted
Application number
CN201611159804.1A
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Chinese (zh)
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CN106593296B (en
Inventor
肖云峰
郭红峰
李晗丽
赵小强
杨书港
孟丽华
胡波
王岳
王文明
杜新军
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Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Priority to CN201611159804.1A priority Critical patent/CN106593296B/en
Publication of CN106593296A publication Critical patent/CN106593296A/en
Application granted granted Critical
Publication of CN106593296B publication Critical patent/CN106593296B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00Drives for drilling, used in the borehole
    • E21B4/16Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units

Abstract

The invention provides an underground double-acting accelerator. The underground double-acting accelerator comprises an upper joint, an upper shell, a middle shell and a lower shell, which are in threaded connection with one another in turn from top to bottom and the interiors of which are communicated with one another, wherein an axial pressure-stabilizing structure is arranged in the upper shell; the lower end of the axial pressure-stabilizing structure extends into the middle shell; a peripheral impact structure is arranged in the middle shell; the upper end of the peripheral impact structure is resisted against the lower end of the axial pressure-stabilizing structure; the lower end of the peripheral impact structure is penetrated through the lower shell and extends out of the lower shell. According to the invention, the axial pressure-stabilizing structure is arranged for stabilizing the axial pressure endured by a drill bit and applying an axial stable push force to the drill bit, and meanwhile, the peripheral impact structure is arranged for supplying the peripheral impact force to the drill bit and increasing the drilling speed.

Description

Down-hole double acting accelerator
Technical field
The present invention relates to downhole tool technical field, refers in particular to a kind of down-hole double acting accelerator.
Background technology
Petroleum drilling technology development is at all to make great efforts to reduce drilling cost, improve the success rate of probing, improve drilling well speed Degree, the quality for ensureing drilling well and the purpose for realizing geological prospecting or oil field development.New theory, new technique, the research of new technology with Using the theme for being petroleum drilling technology development.
In oil conventional drilling, PDC drill bit is widely used, however, when operating at the scene, often because department Brill technology, experience problem or because borehole wall frictional resistance problem, cause to be applied to drill bit so that send brill not in time or send drill-through fast The pressure of the drill it is unstable, efficiency of breaking rock is affected, it could even be possible to damaging drill bit, the cutting of the drill bit that bursts apart because of the pressure of the drill suddenly increase Tooth etc., affects rate of penetration.On the other hand, PDC drill bit is when hard or abrasive layer is bored, and usually not enough moment of torsion is breaking Broken stratum so that drill bit moment stop operating.At this moment, in drill string, drill string can be tightened torsional energy storage as clockwork spring, Once generating the moment of torsion needed for shearing-crushing stratum, drill string energy will discharge, and high than usual obtaining is applied on PDC teeth Many shock loadings, finally crush Adamas cutting tooth and cause drill bit to fail.In drilling process, mistake is made a trip and changed The PDC drill bit of effect is a key factor for causing drilling cost to increase.It should be evident that PDC in the case of above-mentioned two kinds Service life is greatly shortened, and after PDC failures, its rate of penetration also can be substantially reduced, and from the efficiency of drilling well, be also increased The cost of drilling well.And the instrument of above two can not be simultaneously solved the problems, such as in prior art.
The content of the invention
It is an object of the invention to provide it is a kind of can steady drill bit be subject to pressure, increase drill bit in drilling process and impact The down-hole double acting accelerator of power.
To reach above-mentioned purpose, the invention provides a kind of down-hole double acting accelerator, wherein, the down-hole double acting is carried Fast device includes:Sequentially threaded connection and the top connection of internal run-through, upper shell, middle housing and lower house from top to bottom, it is described on Enclosure interior is provided with axial structure of voltage regulation, the lower end of the axial structure of voltage regulation and extends the inside of the middle housing, the middle shell The inside of body is provided with circumferential impact structure, and the upper end of the circumferential impact structure is mutually pushed up with the lower end of the axial structure of voltage regulation Support, the lower end of the circumferential impact structure runs through the lower house and extend out to the outside of the lower house.
Double acting accelerator in down-hole as above, wherein, the axial structure of voltage regulation includes upper piston and upper core pipe, institute State upper piston and be inner hollow shape with the upper core pipe, the upper piston is slidably arranged in the inside of the upper shell, and institute The outer wall for stating upper piston is fitted with the inner wall sealing of the upper shell, and the upper end of the upper core pipe stretches to the interior of the upper piston Portion is simultaneously threadedly coupled with the upper piston, and the lower end of the upper core pipe is stretched to the inside of the middle housing by the upper shell; Along the radial direction of the upper shell, annular boss is formed towards the direction that diameter reduces on the inwall of the lower end of the upper shell, The outer wall of the upper core pipe is fitted with the inner wall sealing of the annular boss, the lower surface of the piston, the upper shell it is interior The upper surface of wall, the outer wall of the upper core pipe and the annular boss encloses to form the first ring cavity, the side wall of the upper shell On offer pressure stable hole, the pressure stable hole connects the outside of first ring cavity and the upper shell.
Double acting accelerator in down-hole as above, wherein, the circumferential impact structure includes rotating impact component, lower work Plug and lower core pipe, the rotation impact component is respectively positioned on the inside of the middle housing with the lower piston, outside the lower piston Wall is fitted with the inner wall sealing of the middle housing, and the lower end for rotating impact component stretches to the interior of the upper end of the lower piston Portion, and the upper end for rotating impact component and the mutual contact of the upper core pipe, it is the upper surface of the rotation impact component, described The inwall of middle housing, the lower surface of the upper shell enclose to form the second ring cavity with the outer wall of the upper core pipe, the lower core pipe Upper end be threadedly coupled with the lower end of the lower piston in the inside of the middle housing, the lower end of the lower core pipe is under described The outside of the lower house is extend out to after housing.
Down-hole double acting accelerator as above, wherein, hollow tubular of the lower piston in up/down perforation, it is described under Piston from top to bottom includes integrally formed epimere, stage casing and hypomere, and the rotation impact component is located at the upper of the lower piston Intrasegmental part, the upper end of the lower core pipe is threadedly coupled with the lower end of the lower piston;
Two dredging flow grooves, and the inwall of the epimere of the lower piston are symmetrically arranged with the inwall of the epimere of the lower piston On to be symmetrically arranged with two radial sections be fan-shaped fan groove, and along the radial direction of the lower piston, fan groove described in two The line at center is vertical with the line at the center of dredging flow groove described in two;Corresponding to each described on the outer wall of the epimere of the lower piston Fan groove be respectively arranged with a drainage trough at the position described in adjacent two between dredging flow groove, it is each dredging flow groove, each described Fan groove and each drainage trough offer at least one along the axially extending of the lower piston in each described drainage trough Along the conduction hole of the side wall for extending radially through the lower piston of the lower piston;
The internal diameter in the stage casing of the lower piston less than the lower piston epimere internal diameter, the stage casing of the lower piston it is interior Wall protrudes from the inwall of the epimere of the lower piston, along the radial direction of the lower piston, the lower end in the stage casing of the lower piston Positive stop lug boss is formed on inwall towards the direction that diameter reduces;
The internal diameter of the hypomere of the lower piston more than the stage casing of the lower piston internal diameter, and the hypomere of the lower piston Internal diameter of the internal diameter less than the epimere of the lower piston.
Double acting accelerator in down-hole as above, wherein, the impact component that rotates includes hammering block, commutation body, filter cylinder And gland;
The filter cylinder includes integrally formed epimere and hypomere, and the epimere of the filter cylinder is located at the epimere of the lower piston Inside, along the radial direction of the filter cylinder, uniformly offers multiple filter openings, under the filter cylinder on the side wall of the epimere of the filter cylinder Section is located at the inside in the stage casing of the lower piston, and the bottom of the filter cylinder is resisted against on the positive stop lug boss, the filter cylinder The external diameter of hypomere is more than the external diameter of the epimere of the filter cylinder, and the outer wall of the hypomere of the filter cylinder protrudes from the epimere of the filter cylinder Outer wall, the junction of the upper surface of the hypomere of the filter cylinder and the outer wall of the hypomere of the filter cylinder forms from top to bottom flaring shape Guiding incline, in the state of the bottom of the filter cylinder is resisted against on the positive stop lug boss, the upper surface of the hypomere of the filter cylinder with The upper surface in the stage casing of the lower piston is concordant;
The commutation body is sheathed on the outside of the epimere of the filter cylinder, and the lower end of the commutation body is resisted against the filter cylinder Hypomere upper surface on, the hammering block is set in the outside of the commutation body, and the lower piston is set in the hammering block Outside, the lower end of the hammering block is resisted against on the upper surface in the stage casing of the lower piston, the inwall of the lower piston and the anvil The outer wall laminating of son is contacted, and the inwall of the hammering block is contacted with the outer wall laminating of the commutation body, the inwall of the commutation body Contact with the laminating of the outer wall of the filter cylinder, the upper surface of the lower piston, the upper surface of the hammering block and the commutation body it is upper End face is concordant, and the gland is set in the outside of the filter cylinder and contacts with the outer wall laminating of the filter cylinder, and the gland pressure Compel on the upper surface of the upper surface of the lower piston, the upper surface of the hammering block and the commutation body, the middle housing it is interior The upper surface of wall, the lower surface of the upper shell, the outer wall of the upper core pipe and the gland encloses to form the second ring cavity, described The inside of upper core pipe inside respectively with the filter cylinder, second ring cavity are connected.
Double acting accelerator in down-hole as above, wherein, the mistake being connected with each drainage trough is offered on the gland Discharge orifice.
Double acting accelerator in down-hole as above, wherein, limit is convexly equipped with the inwall of the lower end of the epimere of the filter cylinder Position ring, and the inside of the epimere of the filter cylinder was provided with flow nozzle, the lower surface for crossing flow nozzle is resisted against the spacing ring Upper surface on, described to cross the tubular structure that flow nozzle is inner hollow and up/down perforation, the internal diameter for crossing flow nozzle is less than The internal diameter of the epimere of the filter cylinder, and the outer wall for crossing flow nozzle is brought into close contact setting with the inwall of the epimere of the filter cylinder.
Down-hole double acting accelerator as above, wherein, the inwall of the epimere of the lower piston and the lower piston The junction of the inwall in stage casing is formed with the earial drainage guide surface in gradually-reducing shape from top to bottom, the earial drainage guide surface, the hammering block Lower surface, the lower surface of the commutation body and the guiding incline enclose to form earial drainage ring cavity, the top of the earial drainage guide surface The distance between edge and internal face of epimere of the lower piston less than the epimere of the piston sidewall thickness, the earial drainage ring Chamber connects with the dredging flow groove.
Double acting accelerator in down-hole as above, wherein, offer on the guiding incline and led described in multiple extending vertically through The discharge orifice on inclined-plane, the discharge orifice connects the inside of the earial drainage ring cavity and the hypomere of the filter cylinder.
Double acting accelerator in down-hole as above, wherein, offer at least one circulation on the side wall of the lower piston Hole, each described circulation port connects one and the earial drainage ring cavity in a plurality of drainage trough.
Down-hole double acting accelerator as above, wherein, it is symmetrical on the outer wall of the hammering block to be convexly equipped with two sectors Block, in the state of the lower piston is sheathed on the outside of the hammering block, two secter pats insert respectively two fans In shape groove, the radial section product of the fan groove is accumulated more than the radial section of the secter pat, in the lower piston and the anvil In the state of producing relative rotation between son, the secter pat can be moved in the fan groove;
It is symmetrical on the inwall of the hammering block to be convexly equipped with two limited blocks, the equal edge of limited block described in secter pat described in two and two The axis for the hammering block extends, and along the radial direction of the hammering block, the line of centres of limited block described in two is perpendicular to described in two The line of centres of secter pat;
It is close to the both sides of each secter pat, and is close to the both sides of each limited block, on the side wall of the hammering block respectively Offer the passage of the side wall through the hammering block, positioned at each limited block both sides passage can the hammering block with it is described under Produce relative rotation between piston to precalculated position and connected with the dredging flow groove.
Double acting accelerator in down-hole as above, wherein, the outer wall of the commutation body is concavely provided with four and is uniformly distributed Gas pressure relief slot, each gas pressure relief slot is axially extending each along the commutation body, and each gas pressure relief slot upwardly extends pass through respectively The upper surface of the commutation body is worn, each gas pressure relief slot extends through separately down the lower surface of the commutation body, per two phases Radial section is formed between the adjacent gas pressure relief slot in fan-shaped projection, the projection includes two the first projections and two second Projection;
Two first projections are symmetrical along the axis centre of the commutation body, recessed respectively on two first projections Limited location groove, two stopper slots are changed respectively along the axially extending of the commutation body, and two stopper slots along described Extending axially upward and through the upper surface of the commutation body to body, two stopper slots are respectively along the commutation body Extend axially downward and not through the lower surface of the commutation body, the shape in the outside of the commutation body is sheathed in the hammering block Under state, the limited block is stretched in the stopper slot, along the radial direction of the commutation body, the radial section product of the stopper slot Accumulate more than the radial section of the limited block, in the state of producing relative rotation between the hammering block and the commutation body, institute Stating limited block can move in the stopper slot;
Two second projections are symmetrical along the axis centre of the commutation body, open respectively on two second projections At least one pair of is provided with along the through hole for extending radially through the commutation body of the commutation body, and along the center of second projection With the line at the center of the radial section of the commutation body, two in through hole described in each pair through hole symmetrically, in institute State limited block to be resisted against in the state of the side of the stopper slot, in through hole described in each pair and the hammering block institute is located at A connection in the passage of the both sides for stating secter pat, and the state of the opposite side of the stopper slot is resisted against in the limited block Under, another in through hole described in each pair with the hammering block on be located at another company in the passage of the both sides of the secter pat It is logical.
Double acting accelerator in down-hole as above, wherein, spline is provided between the lower core pipe and the lower house, institute Spline is stated including multiple key teeths being arranged on the outer wall of the lower core pipe and multiple is arranged on the inwall of the lower house Keyway, the key teeth and the keyway are corresponded and arranged, along the radial direction of the lower house, the radial section of the keyway Product is accumulated more than the radial section of the key teeth, is respectively provided between the both sides of each key teeth and the two side of the corresponding keyway Gap, in the state of the lower piston drives the lower core pipe to rotate, the key teeth can be moved in the corresponding keyway.
Compared with prior art, advantages of the present invention is as follows:
The present invention by arrange axial structure of voltage regulation can the axial compressive force that is subject to of steady drill bit, be that drill bit applies axially surely Fixed thrust, while by arranging circumferential impact structure, can provide circumferential impulsive force for drill bit, improves bit speed.
Description of the drawings
The following drawings is only intended in schematic illustration and explanation is done to the present invention, is not delimit the scope of the invention.Wherein:
Fig. 1 is the external structure schematic diagram of the down-hole double acting accelerator that the present invention is provided;
Fig. 2 is the side cutaway view of the down-hole double acting accelerator that the present invention is provided;
Fig. 3 is the structure enlarged diagram in Fig. 2 at A;
Fig. 4 is the external structure schematic diagram of the lower piston of the down-hole double acting accelerator that the present invention is provided;
Fig. 5 is the side cutaway view of the lower piston of the down-hole double acting accelerator that the present invention is provided;
Fig. 6 is the top plan view of the lower piston of the down-hole double acting accelerator that the present invention is provided;
Fig. 7 is the front view of the hammering block of the down-hole double acting accelerator that the present invention is provided;
Fig. 8 is the side view of the hammering block of the down-hole double acting accelerator that the present invention is provided;
Fig. 9 is the top plan view of the hammering block of the down-hole double acting accelerator that the present invention is provided;
Figure 10 is the side cutaway view of the commutation body of the down-hole double acting accelerator that the present invention is provided;
Figure 11 is the top plan view of the commutation body of the down-hole double acting accelerator that the present invention is provided;
Figure 12 is the side-looking partial cutaway schematic of the filter cylinder of the down-hole double acting accelerator that the present invention is provided;
Figure 13 is the generalized section along Fig. 2 section lines B-B;
Figure 14 A, Figure 14 B, Figure 14 C, Figure 14 D, Figure 14 E and Figure 14 F are the down-hole double acting accelerators that the present invention is provided Impact process schematic diagram;
Figure 15 A, Figure 15 B, Figure 15 C, Figure 15 D, Figure 15 E and Figure 15 F are the down-hole double acting accelerators that the present invention is provided Return stroke schematic diagram.
Drawing reference numeral explanation:
1 top connection
2 upper shells
21 annular boss
22 first ring cavities
23 pressure stable holes
Housing in 3
31 second ring cavities
4 lower houses
41 splines
411 key teeths
412 keyways
5 axial structure of voltage regulation
51 upper pistons
Core pipe on 52
6 circumferential impact structures
61 rotate impact component
611 hammering blocks
6111st, 6111A secter pats
6112nd, 6112A, 6112B limited block
6113 passages
612 commutation bodies
6121 gas pressure relief slots
6122nd, the projections of 6122A first
6123 stopper slots
6124 second projections
6125 through holes
613 filter cylinders
6131 epimeres
6132 hypomeres
6133 filter openings
6134 guiding inclines
6135 discharge orifices
614 glands
6141 back of the body cap
6145 spacing rings
615 cross flow nozzle
62 lower pistons
621 epimeres
6211 dredging flow grooves
6212nd, 6212A fan grooves
6213 drainage troughs
6214 conduction holes
622 stage casings
6221 positive stop lug boss
623 hypomeres
624 earial drainage guide surfaces
625 earial drainage ring cavities
626 circulation ports
63 times core pipes
Specific embodiment
In order to have clearer understanding to technical scheme, purpose and effect, in conjunction with the description of the drawings present invention Specific embodiment.
As shown in Figures 1 and 2, the invention provides a kind of down-hole double acting accelerator, wherein, down-hole double acting accelerator Including:Sequentially threaded connection and the top connection 1 of internal run-through, upper shell 2, middle housing 3 and lower house 4 from top to bottom, wherein, on The upper end of housing 2 is connected with top connection 1, and integrally formed with lower contact, lower contact is used to connect drill bit for the lower end of lower house 4, on Axial structure of voltage regulation 5, the lower end of axial structure of voltage regulation 5 are provided with inside housing 2 and extend the inside of middle housing 3, the inside of middle housing 3 Circumferential impact structure 6, the upper end of circumferential impact structure 6 and the mutual contact in lower end of axial structure of voltage regulation 5 are provided with, knot is circumferentially impacted The lower end of structure 6 runs through lower house 4 and extend out to the outside of lower house 4.When in use, carried for drill bit by axial structure of voltage regulation 5 For stable axial thrust, prevent be applied to drill bit the pressure of the drill it is unstable, efficiency of breaking rock is affected, it could even be possible to because boring Pressure increases suddenly and damaging drill bit, the cutting tooth for the drill bit that bursts apart etc. affects the situation of rate of penetration to occur;Simultaneously by arranging week To impact structure 6, the circumferential impact drilling power that high frequency can be provided for drill bit, efficiency of breaking rock is improved, it is to avoid occur because rock is hard Spend higher and cause drill bit to stop and stress rupture, cause the situation for creeping into interruption to occur.
To sum up, a kind of down-hole double acting accelerator that the present invention is provided, can apply the thrust and circumference of axial direction to drill bit Impulsive force, to improve drill bit efficiency of breaking rock, improves bit speed.
Further, as shown in Fig. 2 the invention provides a kind of down-hole double acting accelerator, wherein, axial structure of voltage regulation 5 include upper piston 51 and upper core pipe 52, and upper piston 51 is inner hollow shape, from top connection 1 upper casing is entered into upper core pipe 52 High-pressure slurry inside body 2 can pass through the inside of housing 3 in upper piston 51 and the arrival of upper core pipe 52, upper piston 51 to be slidably arranged in The inside of upper shell 2, i.e. upper piston 51 can slide up and down and drive core along the axial direction of upper shell 2 in the inside of upper shell 2 Pipe 52 moves up and down, and the outer wall of upper piston 51 is fitted with the inner wall sealing of upper shell 2, and the upper end of upper core pipe 52 stretches to work The inside of plug 51 is simultaneously threadedly coupled with upper piston 51, and the lower end of upper core pipe 52 is stretched to the inside of middle housing 3 by upper shell 2, is made The high-pressure slurry that must be entered inside upper shell 2 cannot be introduced between upper piston 51 and upper shell 2, but can only enter upper piston 51 inside simultaneously move downward and housing 3 in entering, and continue downwards into lower house 4 and from lower house 4 along upper core pipe 52 Flow out to and be changed between the present invention and pit shaft low pressure mud, equivalent in the inside of upper shell 2 a mud runner is separated out;Edge The radial direction of upper shell 2, annular boss 21, upper core pipe are formed towards the direction that diameter reduces on the inwall of the lower end of upper shell 2 52 outer wall is fitted with the inner wall sealing of annular boss 21, the lower surface of piston, the inwall of upper shell 2, the outer wall of upper core pipe 52 And the upper surface of annular boss 21 encloses to form the first ring cavity 22, and on the side wall of upper shell 2 pressure stable hole 23, pressure stable hole are offered 23 the first ring cavities of connection 22 and the outside of upper shell 2, are now flowed into the low pressure mud between the present invention and pit shaft through voltage stabilizing Hole 23 reaches the inside of the first ring cavity 22, it is to be understood that upper shell 2 has been internally formed two cavitys, and a receiving is low Pressure mud is the first ring cavity 22, and another is the mud runner for accommodating high-pressure slurry, inside upper piston 51 and upper core pipe 52 High-pressure slurry and the first ring cavity 22 in low pressure mud between form pressure differential, carry for upper piston 51 in the presence of pressure differential For stable thrust, and due to the presence of the mesolow mud of the first ring cavity 22, even if there is pressure change at high-pressure slurry, by Can slow down shadow of the pressure change of high-pressure slurry to upper piston 51, upper core pipe 52 or even drill bit in the cushioning effect of low pressure mud Ring, it is ensured that the down-hole double acting accelerator that the present invention is provided is subject to stable axial thrust.I.e. it is to be understood that normal drilling well When, mud is pumped into inside the present invention, flows to drill bit, then Jing drill bits enter pit shaft, is returned in the ring cavity between pit shaft and the present invention Ground is gone back to, is apparent from, the mud inside the present invention is high-pressure slurry, the mud in ring cavity between the present invention and pit shaft is low pressure mud Slurry, therefore, it is high-pressure slurry to act on the upper surface of upper piston 51, and it is low pressure mud to act on the lower surface of upper piston 51, in this mud Under slurry differential pressure action, 51 upper pistons drive upper core pipe 52 descending by the inner downlink of drives edge upper shell 2, and then promote lower core Pipe 63 is also descending, lower core pipe 63 is stretched out outside lower house 4.
In the case where mud displacement and bit parameter are certain, the mud pressure reduction of two end faces up and down of upper piston 51 is also Certain, the thrust for being formed is also fixed, so the overall thrust of the present invention is row that is constant, stretching out with lower core pipe 63 It doesn't matter for journey length.So, ensure that the pressure of the drill suffered by drill bit is in all the time steady statue.
Further, as shown in Figures 2 and 3, the invention provides a kind of down-hole double acting accelerator, wherein, circumferential punching Hitting structure 6 includes rotating impact component 61, lower piston 62 and lower core pipe 63, rotates impact component 61, lower piston 62 and lower core pipe 63 are inner hollow shape, and the high-pressure slurry in upper core pipe 52 can pass through lower piston 62, rotate impact component 61 and lower piston 62 The inside of middle housing 3 is respectively positioned on, the outer wall of lower piston 62 is fitted with the inner wall sealing of middle housing 3, and lower piston 62 can be along in The axial direction of housing 3 moves up and down and drives lower core pipe 63 to move up and down, and the lower end for rotating impact component 61 stretches to lower piston 62 Upper end inside, and rotate upper end and the mutual contact of upper core pipe 52 of impact component 61, upper piston 51 is promoted in upper core pipe 52 While lower motion, upper core pipe 52 promotes rotation impact component 61 and lower piston 62 together to move up and down and drive in lower core pipe 63 Lower motion so that the drill bit of the lower end of lower core pipe 63 is moved downward carries out drilling work, the lower end for showing as lower core pipe 63 is stretched out Or retraction lower house 4, in the presence of slurry fluid, lower core pipe 63 can stretch out, and then promote drill bit drilling;Rotate impact component 61 upper surface, the inwall of middle housing 3, the lower surface of upper shell 2 enclose to form the second ring cavity 31 with the outer wall of upper core pipe 52, under The upper end of core pipe 63 is threadedly coupled in the inside of middle housing 3 with the lower end of lower piston 62, and the lower end of lower core pipe 63 is downward through under The outside that lower house 4 is extend out to after housing 4 is connected with drill bit, the high-pressure slurry in upper core pipe 52, a part from upper core pipe 52 with The gap rotated between impact component 61 is entered in the second ring cavity 31, and another part is directly entered rotation impact from upper core pipe 52 The inside of component 61, under the pressure effect of two parts high-pressure slurry, drives rotation impact component 61 to carry out rotating impact and band Dynamic lower piston 62, lower core pipe 63 and drill bit together carry out circumferential impact.It should be noted that:Instantly core pipe 63 stretches out certain length When afterwards, the lower surface of lower piston 51 is fitted with the upper surface of lower house 4, lower core pipe is continued protruding, to prevent down Core pipe 63 drops.
Further, as shown in Fig. 2~Fig. 6, the invention provides a kind of down-hole double acting accelerator, wherein, lower work Hollow tubular of the plug 62 in up/down perforation, lower piston 62 from top to bottom includes integrally formed epimere 621, stage casing 622 and hypomere 623, rotating impact component 61 inside the epimere 621 of lower piston 62, and rotate impact component 61 can produce with lower piston 62 A range of relative rotation, the upper end of lower core pipe 63 is threadedly coupled with the lower end of lower piston 62, lower core pipe 63 and lower piston 62 Between keep geo-stationary, drive lower core pipe 63 together to rotate when lower piston 62 is rotated;
Two dredging flow grooves 6211 are symmetrically arranged with the inwall of the epimere 621 of lower piston 62, high-pressure slurry drives and rotates punching Hit after the rotation impact of component 61 and the stage casing 622 of lower piston 62 and the hypomere 623 of lower piston 62 flowed downwardly to from dredging flow groove 6211, And finally flow in lower core pipe 63, and two radial sections are symmetrically arranged with the inwall of the epimere 621 of lower piston 62 for sector Fan groove 6212, high-pressure slurry by flowing in and out from the both sides of fan groove 6212 during drive rotate impact component 61 carry out rotation impact, and along the radial direction of lower piston 62, the line at the center of two fan grooves 6212 and two dredging flow grooves 6211 The line at center is vertical;Corresponding to each fan groove 6212 and two adjacent dredging flow grooves on the outer wall of the epimere 621 of lower piston 62 A drainage trough 6213, each dredging flow groove 6211, each fan groove 6212 and each drainage trough are respectively arranged with position between 6211 6213 along the axially extending of lower piston 62, offer in each drainage trough 6,213 at least one along lower piston 62 radial direction Through the conduction hole 6214 of the side wall of lower piston 62, wherein conduction hole 6214 can arrange multiple, and multiple conduction holes 6214 from Spread configuration, the high-pressure slurry in the second ring cavity 31 is up to descended to enter drainage trough 6213 and enter along conduction hole 6214 and rotate punching Hit in component 61 and it is driven so as to carry out rotation impact;
The internal diameter in the stage casing 622 of lower piston 62 is less than the internal diameter of the epimere 621 of lower piston 62, the stage casing 622 of lower piston 62 Inwall protrude from lower piston 62 epimere 621 inwall, along the radial direction of lower piston 62, under the stage casing 622 of lower piston 62 The epimere 621 and lower piston 62 of positive stop lug boss 6221, i.e. lower piston 62 are formed on the inwall at end towards the direction that diameter reduces The junction in stage casing 622 defines step surface;
The internal diameter of the hypomere 623 of lower piston 62, more than the internal diameter in the stage casing 622 of lower piston 62, is to ensure through rotation impact The mud of component 61 and lower piston 62 is quickly discharged, and should ensure that the internal diameter of lower core pipe 63 not less than the stage casing 622 of lower piston 62 Internal diameter, simultaneously because the tube wall of lower core pipe 63 has certain thickness, so the internal diameter to ensure lower core pipe 63 is not less than lower piston The internal diameter in 62 stage casing 622, the internal diameter of the hypomere 623 of lower piston 62 should be set to the internal diameter in the stage casing 622 more than lower piston 62, Preferably, the internal diameter of the hypomere 623 of lower piston 62 should be greater than the internal diameter in the stage casing 622 of lower piston 62 and the twice of lower core pipe 63 Wall thickness sum, but it should be recognized that in the case where realizing inside the present invention that mud is normally quickly discharged, lower piston The internal diameter of 62 hypomere 623 can also be not more than the internal diameter in the stage casing 622 of lower piston 62, and the present invention is not limited thereto;And under The internal diameter of the hypomere 623 of piston 62 is less than the internal diameter of the epimere 621 of lower piston 62, it should be noted that the hypomere of lower piston 62 623 internal diameter is it is not necessary to be less than the internal diameter of the epimere 621 of lower piston 62, those skilled in the art can be according to actual feelings Condition flexibly determines the internal diameter of each section of lower piston 62, and the present invention is not limited thereto.
Further, as shown in Fig. 2, Fig. 3 and Fig. 7~Figure 13, the invention provides a kind of down-hole double acting accelerator, Wherein, rotating impact component 61 includes hammering block 611, commutation body 612, filter cylinder 613 and gland 614, commutation body 612, hammering block 611, Lower piston 62 is radially from inside to outside installed successively, in the presence of mud pressure, the energy rotary impact of hammering block 611 lower piston 62, and Impact is passed to lower core pipe 63, so as to circumferential drill hammer;
Filter cylinder 613 includes integrally formed epimere 6131 and hypomere 6132, and the epimere 6131 of filter cylinder 613 is located at lower piston 62 Epimere 621 inside, along the radial direction of filter cylinder 613, on the side wall of the epimere 6131 of filter cylinder 613 multiple filter openings are uniformly offered 6133, the high-pressure slurry rotated in impact component 61 is flowed into from upper core pipe 52 and is all flowed in filter cylinder 613, reach in filter cylinder 613 High-pressure slurry a part flow downwardly in lower core pipe 63 along filter cylinder 613, another part through filter opening 6133 reach filter cylinder 613 Outside, and through filter opening 6133 reach filter cylinder 613 outside high-pressure slurry pressure as drive rotate impact 61 turns of component The driving force of dynamic impact;The hypomere 6132 of filter cylinder 613 is located at the inside in the stage casing 622 of lower piston 62, and the bottom of filter cylinder 613 (i.e. the lower end of the hypomere 6132 of filter cylinder 613) is resisted against on positive stop lug boss 6221, and the external diameter of the hypomere 6132 of filter cylinder 613 is more than filter The external diameter of the epimere 6131 of cylinder 613, the outer wall of the hypomere 6132 of filter cylinder 613 protrudes from the outer wall of the epimere 6131 of filter cylinder 613, filters The junction of the outer wall of the hypomere 6132 of upper surface and the filter cylinder 613 of the hypomere 6132 of cylinder 613 forms from top to bottom flaring shape Guiding incline 6134, in the state of the bottom of filter cylinder 613 is resisted against on positive stop lug boss 6221, the hypomere 6132 of filter cylinder 613 it is upper End face is concordant with the upper surface in the stage casing 622 of lower piston 62;
Commutation body 612 is sheathed on the outside of the epimere 6131 of filter cylinder 613, and the lower end of the body 612 that commutates is resisted against filter cylinder 613 Hypomere 6132 upper surface on, hammering block 611 is set in the outside of commutation body 612, and lower piston 62 is set in the outer of hammering block 611 Side, the lower end of hammering block 611 is resisted against on the upper surface in stage casing 622 of lower piston 62, due to the upper end of the hypomere 6132 of filter cylinder 613 Face is concordant with the upper surface in the stage casing 622 of lower piston 62, and the lower surface of the body 612 that commutates is concordant with the lower surface of hammering block 611, lower work The inwall of plug 62 is contacted with the outer wall laminating of hammering block 611, and the inwall of hammering block 611 is contacted with the outer wall laminating of commutation body 612, is changed The outer wall laminating of inwall and filter cylinder 613 to body 612 contact, the upper surface of lower piston 62, the upper surface of hammering block 611 and the body that commutates 612 upper surface is concordant, and gland 614 is set in the outside of filter cylinder 613 and contacts with the outer wall laminating of filter cylinder 613, and gland 614 Oppress on the upper surface of the upper surface of lower piston 62, the upper surface of hammering block 611 and commutation body 612, by arranging gland 614, The relative position of lower piston 62, hammering block 611, commutation body 612 and filter cylinder 613 can be kept, lower work is made when moving axially Plug 62, hammering block 611, commutation body 612 and filter cylinder 613 are synchronous to carry out axially-movable, the inwall of middle housing 3, the lower end of upper shell 2 The upper surface in face, the outer wall of upper core pipe 52 and gland 614 encloses to form the second ring cavity 31, the inside of upper core pipe 52 respectively with filter cylinder 613 inside, the second ring cavity 31 are connected.
Preferably, as shown in Figures 2 and 3, the invention provides a kind of down-hole double acting accelerator, wherein, filter cylinder 613 Epimere 6131 lower end inwall on be convexly equipped with spacing ring 6145, and the inside of the epimere 6131 of filter cylinder 613 is provided with excessively stream spray Mouth 615, cross flow nozzle 615 lower surface be resisted against on the upper surface of spacing ring 6145, cross flow nozzle 615 be inner hollow and on The tubular structure of lower insertion, crosses the internal diameter of the internal diameter less than the epimere 6131 of filter cylinder 613 of flow nozzle 615, and crosses flow nozzle 615 Outer wall is brought into close contact setting with the inwall of the epimere 6131 of filter cylinder 613.By arranging flow nozzle 615 so that high-pressure slurry from The circulation area when bottom of filter cylinder 613 is flowed out further reduces, and the pressure in filter cylinder 613 is improved by current limliting, and makes filter cylinder The mud of more parts flow to the outside of filter cylinder 613 to commutating body 612 and hammering block 611 is driven from filter opening 6133 in 613.
Preferably, the invention provides a kind of down-hole double acting accelerator, wherein, offer on gland 614 and respectively draw The flowing hole that chute 6213 is connected.By arranging flowing hole the high-pressure slurry in the second ring cavity 31 could be caused to pass through gland 614 and enter drainage trough 6213, so as to pass through conduction hole 6214 into lower piston 62 inside to rotate impact component 61 carry out Driving makes it produce circumferential impact.
Preferably, as shown in Figures 2 and 3, the invention provides a kind of down-hole double acting accelerator, wherein, gland 614 Top is provided with back of the body cap 6141, and back of the body cap 6141 is set on the outer wall of filter cylinder, and the lower surface of back of the body cap 6141 is resisted against gland 614 On upper surface, and the upper surface of back of the body cap 6141 is concordant with the upper surface of gland 614, and the lower surface of upper core pipe 52 is resisted against back of the body cap On 6141 upper surface and the upper surface of gland 614.Upper core pipe 52 can be shared by setting back of the body cap 6141 to be applied on gland 614 Pressure, make core pipe 52 apply a part of pressure be delivered on gland 614 by back of the body cap 6141, make the stress of gland 614 more Plus it is uniform.
Further, as depicted in figs. 3 and 5, the invention provides a kind of down-hole double acting accelerator, wherein, lower work It is in from top to bottom gradually-reducing shape that the inwall of the epimere 621 of plug 62 is formed with the junction of the inwall in the stage casing 622 of lower piston 62 Earial drainage guide surface 624, effectively the mud of outflow in dredging flow groove 6211 can be guided by setting earial drainage guide surface 624 made It flows towards the direction near lower piston 62 stage casing 622, earial drainage guide surface 624, the lower surface of hammering block 611, commutation body 612 Lower surface and guiding incline 6134 enclose to form earial drainage ring cavity 625, the top edge of earial drainage guide surface 624 and the epimere of lower piston 62 The distance between 621 internal face less than the epimere 621 of lower piston 62 sidewall thickness, earial drainage ring cavity 625 and dredging flow groove 6211 Connection, i.e., the mud flowed out from dredging flow groove 6211 is entered in earial drainage ring cavity 625 along earial drainage guide surface 624, and final from letting out The inside in the stage casing 622 of lower piston 62 is flowed in stream ring cavity 625.
Preferably, as depicted in figs. 3 and 5, the invention provides a kind of down-hole double acting accelerator, wherein, guiding incline Multiple discharge orifices 6135 for extending vertically through guiding incline 6134, the connection earial drainage of discharge orifice 6135 ring cavity 625 and filter are offered on 6134 The inside of the hypomere 6132 of cylinder 613.The mud entered in earial drainage ring cavity 625 flows into the hypomere of filter cylinder 613 from discharge orifice 6135 During lower core pipe 63 is flowed into behind 6132 inside, and discharge from lower core pipe 63.
Preferably, as depicted in figs. 3 and 5, the invention provides a kind of down-hole double acting accelerator, wherein, lower piston At least one circulation port 626 is offered on 62 side wall, each circulation port 626 connect in a plurality of drainage trough 6213 and Earial drainage ring cavity 625.Circulate can the high-pressure slurry in the drainage trough 6213 of lower piston 62 by arranging circulation port 626, more Be conducive to being driven to rotating impact component 61 so as to more strong circumferential impulsive force is provided, to improve efficiency of breaking rock. Wherein, preferably, circulation port 626 is provided with multiple, multiple circulation ports 626 are corresponded with a plurality of drainage trough 6213 and arranged, i.e., The bottom of each drainage trough 6213 is connected by a circulation port 626 with the inside of earial drainage ring cavity 625.
Further, as shown in Fig. 7~Fig. 9, the invention provides a kind of down-hole double acting accelerator, wherein, hammering block It is symmetrical on 611 outer wall to be convexly equipped with two secter pats 6111, in the state of lower piston 62 is sheathed on the outside of hammering block 611, Two secter pats 6111 are inserted respectively in two fan grooves 6212, and the radial section product of fan groove 6212 is more than secter pat 6111 Radial section is accumulated, and in the state of producing relative rotation between lower piston 62 and hammering block 611, secter pat 6111 can be in fan groove Move in 6212, before not impacting, the side of secter pat 6111 is resisted against on the side inwall of fan groove 6212, in high pressure mud Hammering block 611 is rotated in the presence of slurry, until the opposite side of secter pat 6111 is resisted against on the opposite side inwall of fan groove 6212, it is complete Impact into once circumferential, secter pat 6111 and fan groove 6212 are equivalent to the connecting elements between lower piston 62 and hammering block 611;
It is symmetrical on the inwall of hammering block 611 to be convexly equipped with two limited blocks 6112, two secter pats 6111 and two limited blocks 6112 Extend each along the axis of hammering block 611, and along the radial direction of hammering block 611, the line of centres of two limited blocks 6112 is perpendicular to two fans The line of centres of shape block 6111, limited block 6112 is used to constitute connecting elements between commutation body 612 and hammering block 611;
It is close to the both sides of each secter pat 6111, and is close to the both sides of each limited block 6112, open respectively on the side wall of hammering block 611 The passage 6113 of the side wall through hammering block 611 is provided with, the passage 6113 positioned at the both sides of each limited block 6112 can be in hammering block 611 with Produce relative rotation to precalculated position between piston 62 and connected with dredging flow groove 6211.The passage of the both sides of secter pat 6111 One of them of 6113 was connected before not impacting with the gap between fan groove 6212 and secter pat 6111 so that hammering block 611 Internal high-pressure slurry is reached side and the side inwall of fan groove 6212 of secter pat 6111 through passage 6113, with The high-pressure slurry of the side of secter pat 6111 is more and more, promotes secter pat 6111 towards another side shifting, and hammering block 611 is rotated, directly Opposite side to secter pat 6111 is resisted against on the opposite side inwall of fan groove 6212, completes once circumferential impact;Impacting Into after, another opposite side inwall with fan groove 6212 and secter pat 6111 of the passage 6113 of the both sides of secter pat 6111 it Between gap connection so that high-pressure slurry hammering block 611 inside through passage 6113 reach secter pat 6111 opposite side with fan Between the opposite side inwall of shape groove 6212, as the high-pressure slurry of the opposite side of secter pat 6111 is more and more, secter pat is promoted 6111 towards a side shifting, and hammering block 611 is rotated, until the side of secter pat 6111 is resisted against the side inwall of fan groove 6212 On, complete a return stroke.
In addition, it is necessary to explanation is:By arranging commutation body 612, hammering block 611, the through hole of lower piston 62, shock surface and limit The angular relationship of plane, can cause impulsive force clockwise larger, impulsive force very little counterclockwise, and even zero, so, it is achieved that Hammering block 611 only carries out unidirectional impact clockwise to lower piston 62.Under high pressure, the effect of continuous slurry fluid, the impact performance For a kind of impact of high-frequency rotating.
Further, as shown in Figures 10 and 11, the invention provides a kind of down-hole double acting accelerator, wherein, change Four equally distributed gas pressure relief slots 6121, axle of each gas pressure relief slot 6121 each along commutation body 612 are concavely provided with to the outer wall of body 612 To extension, and each gas pressure relief slot 6121 is upwardly extended respectively through the upper surface of commutation body 612, and each gas pressure relief slot 6121 prolongs separately down Stretch through the lower surface of commutation body 612, will can be carried out in impact process into secter pat 6111 by arranging gas pressure relief slot 6121 High-pressure slurry between side and the side inwall of fan groove 6212 is discharged, and returning in order to secter pat 6111 does not carry out impact Front position is ready for impact next time, forms radial section between adjacent gas pressure relief slot 6121 per two in the convex of sector Block, projection includes two the first projections 6122 and two the second projections 6124, it is understood that for two Hes of the first projection 6122 Four gas pressure relief slots 6121 are separated out between two the second projections 6124;
Two the first projections 6122 are symmetrical along the axis centre of commutation body 612, recessed respectively on two the first projections 6122 Limited location groove 6123, two stopper slots 6123 are along the axially extending of commutation body 612, and two stopper slots 6123 are respectively along commutation Body 612 is extended axially upward and through the upper surface of commutation body 612, and two stopper slots 6123 are respectively along commutation body 612 Extend axially downward and not through the lower surface of commutation body 612, therefore when hammering block 611 is set in commutation 612 outside of body, by Contact with the inwall laminating of commutation body 612 in the inwall of hammering block 611 so that will not be from into the high-pressure slurry in stopper slot 6123 The lower end of stopper slot 6123 spills downwards, to ensure that high-pressure slurry can be in the internal drive hammering block 611 of stopper slot 6123 and commutation Body 612 produces relative rotation;In the state of hammering block 611 is sheathed on the outside of commutation body 612, limited block 6112 stretches to spacing In groove 6123, along the radial direction of commutation body 612, the radial section product of stopper slot 6123 is more than the radial section of limited block 6112 Product, in the state of producing relative rotation between hammering block 611 and commutation body 612, limited block 6112 can be moved in stopper slot 6123 It is dynamic;After secter pat 6111 is moved to the opposite side of fan groove 6212 by the side of fan groove 6212, the epimere of lower piston 62 Conduction hole 6214 on 621 side walls is connected with the passage 6113 on hammering block 611 positioned at the side of limited block 6112, in drainage trough 6213 High-pressure slurry sequentially enter to the side of limited block 6112 and the one of stopper slot 6123 through conduction hole 6214 and passage 6113 In gap between the inwall of side, with enter high-pressure slurry it is more and more, in the presence of high-pressure slurry, to limited block 6112 Apply thrust, make to be produced relative rotation between hammering block 611 and commutation body 612, it should be noted that due to high in fan groove 6212 Pressure of the pressure mud to secter pat 6111 so that secter pat 6111 cannot be moved by the opposite side pushed against in fan groove 6212, because This hammering block 611 also cannot be rotated, so the relative rotation between hammering block 611 and commutation body 612 is the rotation by the body 612 that commutates Realize, the opposite side for rotating up to limited block 6112 of the body 612 that commutates stops after contacting with the opposite side inwall of stopper slot 6123 Only, the passage 6113 now on hammering block 611 positioned at the side of secter pat 6111 is connected with the gas pressure relief slot 6121 in the outside of commutation body 612, The high-pressure slurry that secter pat 6111 is pushed against in fan groove 6212 is flowed downward out through passage 6113 from gas pressure relief slot 6121, and and this Meanwhile, positioned at the connection opposite side of secter pat 6111 of passage 6113 and the opposite side inwall of fan groove 6212 of the opposite side of secter pat 6111 Between gap, thus passage 6113 enters into the opposite side of secter pat 6111 and fan groove to the high-pressure slurry of the inner side of hammering block 611 Between 6212 opposite side inwall, as the high-pressure slurry for entering is more and more, secter pat 6111 is promoted to return to fan groove 6212 Side, and the side of secter pat 6111 reclines with the side inwall of fan groove 6212, completes return stroke, and is ready for down Once circumferential impact.
Two the second projections 6124 are symmetrical along the axis centre of commutation body 612, open respectively on two the second projections 6124 At least one pair of is provided with along the through hole 6125 for extending radially through commutation body 612 of commutation body 612, and along in the second projection 6124 The line at the center of the radial section of the heart and commutation body 612, two in each pair through hole 6125 through hole 6125 symmetrically, is being limited Position block 6112 is resisted against in the state of the side of stopper slot 6123, and in each pair through hole 6125 and hammering block 611 fan is located at A connection in the passage 6113 of the both sides of shape block 6111, and the opposite side of stopper slot 6123 is resisted against in limited block 6112 Under state, another in each pair through hole 6125 is another in the passage 6113 of the both sides of secter pat 6111 with hammering block 611 One connection, i.e., the connection side of secter pat 6111 and fan groove 6,212 1 in impact process, in each pair through hole 6125 Gap between the inwall of side, in return stroke, in each pair through hole 6125 another connection secter pat 6111 opposite side with Gap between the opposite side inwall of fan groove 6212.
Further, as shown in figure 13, the invention provides a kind of down-hole double acting accelerator, wherein, lower core pipe 63 with It is provided with spline 41 between lower house 4, spline 41 includes multiple key teeths 411 being arranged on the outer wall of lower core pipe 63 and multiple sets The keyway 412 on the inwall of lower house 4 is put, key teeth 411 is corresponded with keyway 412 and arranged, along the radial direction of lower house 4, The radial section product of keyway 412 is accumulated more than the radial section of key teeth 411, the both sides of each key teeth 411 and the two of corresponding keyway 412 Gap is respectively provided between the wall of side, in the state of core pipe 63 is rotated in the case where lower piston 62 drives, key teeth 411 can be in corresponding keyway Move in 412.It is lower core pipe by arranging gap between setting flower and between the two side of the both sides of key teeth 411 and keyway 412 63 rotation provides space, it is to avoid the rotation for lower core pipe 63 occur is subject to the stop of lower house 4 and weakens and even eliminate and shadow Ring the situation of circumference percussion.
Wherein, in sealing contact between above-mentioned each part and it is tightly connected, as preferably being realized by sealing ring, or Person those skilled in the art can also realize above-mentioned sealing using other structures or mode, and the present invention is not limited thereto.
The down-hole double acting accelerator that the present invention is provided includes when in use impact process and return stroke:
Please sequentially referring to Figure 14 A, Figure 14 B, Figure 14 C, Figure 14 D, Figure 14 E, Figure 14 F, Figure 15 A, Figure 15 B, Figure 15 C, figure 15D, Figure 15 E and Figure 15 F, the now motion to each part in impact process and return stroke is illustrated, the table mentioned in figure below " left side " for showing direction is the left side when part turns to the top, and " right side " is the right side when part turns to the top:
Secter pat 6111A left sides contact with the inner left wall of fan groove 6212A, the passage in the left side of limited block 6112A 6113 connect with conduction hole 6214 and drainage trough 6213 on the right side of fan groove 6212A, the high-pressure slurry in drainage trough 6213 along Passage 6113 on the left of conduction hole 6214, limited block 6112A enters to the left side of limited block 6112A and corresponding stopper slot 6123 Inner left wall between, high-pressure slurry pressure effect under, commutate body 612 rotate counterclockwise until limited block 6112A the right side Side reclines with the right side inwall of corresponding stopper slot 6123, and commutation body 612 stops operating, now, the first projection 6122A upper left sides Through hole 6125, in the passage 6113 on the left of secter pat 6111A and secter pat 6111A left sides and the left side of fan groove 6212A Gap connection between wall, the high-pressure slurry in filter cylinder 613 is sequentially passed through on the first projection 6122A through the filtration of filter opening 6133 Passage 6113 on the left of the through hole 6125 and secter pat 6111A in left side enters to secter pat 6111A left sides and fan groove 6212A's Between inner left wall, with gradually increasing for high-pressure slurry, under the pressure effect of high-pressure slurry, secter pat 6111A courts are promoted (i.e. hammering block 611 is rotated clockwise) is moved on right side to fan groove 6212A, due to right side and the corresponding limit of limited block 6112A The right side inwall of position groove 6123 is abutted, during secter pat 6111A is moved towards the right side of fan groove 6212A, Hammering block 611 and the commutation synchronous axial system of body 612, keep geo-stationary, until being resisted against fan groove on the right side of secter pat 6111A On the right side inwall of 6212A;It is and spacing after being resisted against on the right side of secter pat 6111A on the right side inwall of fan groove 6212A An earial drainage on passage 6113 and the inwall of lower piston 62 on the left of the corresponding stopper slots 6123 of block 6112A, limited block 6112A Groove 6211 is connected, and the high-pressure slurry in stopper slot 6123 corresponding with limited block 6112A is through the passage on the left of limited block 6112A 6113 flow into outflow in corresponding dredging flow groove 6211, at the same time, the conduction hole 6214 and drain on the left of fan groove 6212A Between the right side of passage 6113 and limited block 6112B on the right side of groove 6213, limited block 6112B and corresponding stopper slot 6123 Gap connection, the high-pressure slurry in drainage trough 6213 by conduction hole 6214 enter limited block 6112B right side with it is corresponding Between stopper slot 6123, under the pressure effect of high-pressure slurry, the body 612 that commutates rotates clockwise the left side until limited block 6112B Side reclines with the inner left wall of corresponding stopper slot 6123, and commutation body 612 stops operating, now, left positioned at the first projection 6122A The left side of passage 6113 and secter pat 6111A on the left of the gas pressure relief slot 6121 of side, secter pat 6111A and fan groove 6212A's Gap connection between inner left wall, in the gap between the left side of secter pat 6111A and the inner left wall of fan groove 6212A High-pressure slurry is flowed downward out from gas pressure relief slot 6121, and simultaneously, the through hole 6125 on right side, fan on the first projection 6122A Between between the right side of passage 6113 and secter pat 6111A and the right side inwall of fan groove 6212A on the right side of shape block 6111A Gap is connected, and starts return stroke.Those of ordinary skill in the art it will be appreciated that return stroke equivalent to reverse impact mistake Journey, is only reversely to complete the motor process of above-mentioned each part once, i.e., impact process is the clockwise movement of secter pat 6111 Process, and return stroke is the process of the counterclockwise movement of secter pat 6111, then this is repeated no more.In the presence of mud pressure, The energy high-frequency rotating impact lower piston 62 of hammering block 611, and impact is passed to lower core pipe 63, so as to carry out the circumferential impact drill in high frequency ground Head.Meanwhile, lower core pipe 63 has enough gaps with the spline of lower house 4, in case the percussion of hammering block 611 is by lower house 4 Limit.So, drill bit is in rotary cutting broken rock, while by the rock drilling power of a circumferential impact type, making efficiency of breaking rock higher.
The present invention forms the impulsive force of the thrust of an axial direction and circumference by using the pressure of slurry fluid, acts on On the drill bit of bottom, so as to apply the circumferential boring by percussion power of a stable the pressure of the drill and a high frequency to drill bit, carry drill bit High efficiency of breaking rock, improves rate of penetration.
Compared with prior art, advantages of the present invention is as follows:
Upper core pipe forms a stable thrust with upper piston in the present invention, and to drill bit the pressure of the drill is applied;Lower core pipe and lower work Plug forms a circumferential impact, and to drill bit the instantaneous rock drilling power of a high frequency is provided.On the one hand, thrust provided by the present invention is The stable thrust of one relative flexibility, promotes drill bit constantly to creep into, it is to avoid to drill bit machinery, rigidly pressurize, due to boring The unstable damage that drill bit is caused of pressure;It is on the other hand, of the invention on the premise of it can transmit top rod driving torque, The circumferential high-frequency percussion of a local can also be formed, the cutting broken rock principle for making PDC drill bit is changed into the continuous rock drilling principle of high frequency, To improve efficiency of breaking rock, while also protecting Cutter not accumulated excessive moment of torsion and burst apart.Two above function is same When act on drill bit, well drilling and rock crushing efficiency is greatly promoted, so reach improve rate of penetration purpose.
The present invention by arrange axial structure of voltage regulation can the axial compressive force that is subject to of steady drill bit, be that drill bit applies axially surely Fixed thrust, while by arranging circumferential impact structure, can provide circumferential impulsive force for drill bit, improves bit speed.
Schematically specific embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is any One of ordinary skill in the art, on the premise of the design without departing from the present invention and principle done equivalent variations with repair Change, the scope of protection of the invention all should be belonged to.

Claims (13)

1. a kind of down-hole double acting accelerator, it is characterised in that the down-hole double acting accelerator includes:Sequentially spiral shell from top to bottom Stricture of vagina connection and the top connection of internal run-through, upper shell, middle housing and lower house, are provided with axial voltage stabilizing knot inside the upper shell Structure, the lower end of the axial structure of voltage regulation extend the inside of the middle housing, and the inside of the middle housing is provided with circumferential impact knot Structure, the mutual contact in lower end of the upper end of the circumferential impact structure and the axial structure of voltage regulation, the circumferential impact structure Lower end runs through the lower house and extend out to the outside of the lower house.
2. double acting accelerator in down-hole according to claim 1, it is characterised in that the axial structure of voltage regulation includes upper work Plug and upper core pipe, the upper piston is inner hollow shape with the upper core pipe, and the upper piston is slidably arranged in the upper casing The inside of body, and the outer wall of the upper piston fits with the inner wall sealing of the upper shell, the upper end of the upper core pipe stretches to The inside of the upper piston is simultaneously threadedly coupled with the upper piston, and the lower end of the upper core pipe is described in the upper shell is stretched to The inside of middle housing;Along the radial direction of the upper shell, the direction reduced towards diameter on the inwall of the lower end of the upper shell Annular boss is formed, the outer wall of the upper core pipe is fitted with the inner wall sealing of the annular boss, the lower surface of the piston, institute Inwall, the outer wall of the upper core pipe and the upper surface of the annular boss for stating upper shell encloses to form the first ring cavity, described Pressure stable hole is offered on the side wall of upper shell, the pressure stable hole connects the outside of first ring cavity and the upper shell.
3. double acting accelerator in down-hole according to claim 2, it is characterised in that the circumferential impact structure includes rotating Impact component, lower piston and lower core pipe, the rotation impact component is respectively positioned on the inside of the middle housing, institute with the lower piston The outer wall for stating lower piston is fitted with the inner wall sealing of the middle housing, and the lower end for rotating impact component stretches to the lower work Component is impacted in the inside of the upper end of plug, and the upper end for rotating impact component and the mutual contact of the upper core pipe, the rotation Upper surface, the inwall of the middle housing, the lower surface of the upper shell enclose to form the second ring with the outer wall of the upper core pipe Chamber, the upper end of the lower core pipe is threadedly coupled in the inside of the middle housing with the lower end of the lower piston, the lower core pipe Lower end extend out to the outside of the lower house after the lower house.
4. double acting accelerator in down-hole according to claim 3, it is characterised in that the lower piston is in up/down perforation Blank pipe shape, the lower piston from top to bottom includes integrally formed epimere, stage casing and hypomere, and the rotation impact component is located at institute The upper intrasegmental part of lower piston is stated, the upper end of the lower core pipe is threadedly coupled with the lower end of the lower piston;
Two dredging flow grooves are symmetrically arranged with the inwall of the epimere of the lower piston, and it is right on the inwall of the epimere of the lower piston It is called fan-shaped fan groove to be arranged with two radial sections, and along the radial direction of the lower piston, the center of fan groove described in two Line it is vertical with the line at the center of dredging flow groove described in two;Each sector is corresponded on the outer wall of the epimere of the lower piston Groove with a drainage trough, each dredging flow groove, each sector are respectively arranged with the position described in adjacent two between dredging flow groove Groove and each drainage trough offer along the axially extending of the lower piston, in each described drainage trough at least one along The conduction hole of the side wall for extending radially through the lower piston of the lower piston;
The internal diameter in the stage casing of the lower piston is less than the internal diameter of the epimere of the lower piston, and the inwall in the stage casing of the lower piston is convex For the inwall of the epimere of the lower piston, along the radial direction of the lower piston, the inwall of the lower end in the stage casing of the lower piston On towards diameter reduce direction formed positive stop lug boss;
The internal diameter of the hypomere of the lower piston is more than the internal diameter in the stage casing of the lower piston, and the internal diameter of the hypomere of the lower piston Less than the internal diameter of the epimere of the lower piston.
5. double acting accelerator in down-hole according to claim 4, it is characterised in that the rotation impact component includes anvil Son, commutation body, filter cylinder and gland;
The filter cylinder includes integrally formed epimere and hypomere, and the epimere of the filter cylinder is located at the interior of the epimere of the lower piston Portion, along the radial direction of the filter cylinder, uniformly offers multiple filter openings, the hypomere of the filter cylinder on the side wall of the epimere of the filter cylinder It is resisted against on the positive stop lug boss positioned at the bottom of the inside in the stage casing of the lower piston, and the filter cylinder, under the filter cylinder The external diameter of section is more than the external diameter of the epimere of the filter cylinder, and the outer wall of the hypomere of the filter cylinder protrudes from the outer of the epimere of the filter cylinder Wall, the junction of the upper surface of the hypomere of the filter cylinder and the outer wall of the hypomere of the filter cylinder forms leading for from top to bottom flaring shape Inclined-plane, in the state of the bottom of the filter cylinder is resisted against on the positive stop lug boss, the upper surface of the hypomere of the filter cylinder and institute The upper surface for stating the stage casing of lower piston is concordant;
The commutation body is sheathed on the outside of the epimere of the filter cylinder, and the lower end of the commutation body is resisted against under the filter cylinder On the upper surface of section, the hammering block is set in the outside of the commutation body, and the lower piston is set in the outside of the hammering block, The lower end of the hammering block is resisted against on the upper surface in the stage casing of the lower piston, and the inwall of the lower piston is outer with the hammering block Wall laminating contact, and the inwall of the hammering block with it is described commutation body outer wall laminating contact, it is described commutate body inwall with it is described The outer wall laminating contact of filter cylinder, the upper surface of the upper surface of the lower piston, the upper surface of the hammering block and the commutation body is put down Together, the gland is set in the outside of the filter cylinder and contacts with the outer wall laminating of the filter cylinder, and the gland is oppressed in institute State on the upper surface of upper surface, the upper surface of the hammering block and the commutation body of lower piston, it is the inwall of the middle housing, described The upper surface of the lower surface of upper shell, the outer wall of the upper core pipe and the gland encloses to form the second ring cavity, the upper core pipe Inside inside respectively with the filter cylinder, second ring cavity is connected.
6. double acting accelerator in down-hole according to claim 5, it is characterised in that offer on the gland described with each The flowing hole that drainage trough is connected.
7. the down-hole double acting accelerator according to claim 5 or 6, it is characterised in that the lower end of the epimere of the filter cylinder Inwall on be convexly equipped with spacing ring, and the inside of the epimere of the filter cylinder was provided with flow nozzle, cross the lower surface of flow nozzle against On the upper surface of spacing ring, the flow nozzle excessively is the tubular structure of inner hollow and up/down perforation, the flow nozzle excessively Internal diameter is less than the internal diameter of the epimere of the filter cylinder, and the outer wall for crossing flow nozzle is closely pasted with the inwall of the epimere of the filter cylinder Close and arrange.
8. the down-hole double acting accelerator according to claim 5 or 6, it is characterised in that the epimere of the lower piston it is interior Wall is formed with the earial drainage guide surface in gradually-reducing shape from top to bottom, the earial drainage with the junction of the inwall in the stage casing of the lower piston Guide surface, the lower surface of the hammering block, the lower surface of the commutation body and the guiding incline enclose to form earial drainage ring cavity, described to let out The side wall of the distance between top edge and internal face of epimere of the lower piston of stream guide surface less than the epimere of the piston Thickness, the earial drainage ring cavity is connected with the dredging flow groove.
9. double acting accelerator in down-hole according to claim 8, it is characterised in that multiple hanging down is offered on the guiding incline Directly through the discharge orifice of the guiding incline, the discharge orifice connects the inside of the earial drainage ring cavity and the hypomere of the filter cylinder.
10. double acting accelerator in down-hole according to claim 9, it is characterised in that open up on the side wall of the lower piston There is at least one circulation port, each described circulation port connects one and the earial drainage ring cavity in a plurality of drainage trough.
11. double acting accelerators in down-hole according to claim 8, it is characterised in that symmetrical on the outer wall of the hammering block Two secter pats are convexly equipped with, in the state of the lower piston is sheathed on the outside of the hammering block, two secter pat difference In two fan grooves of insertion, the radial section product of the fan groove is accumulated more than the radial section of the secter pat, described In the state of producing relative rotation between lower piston and the hammering block, the secter pat can be moved in the fan groove;
Symmetrical on the inwall of the hammering block to be convexly equipped with two limited blocks, limited block is each along institute described in secter pat described in two and two The axis for stating hammering block extends, and along the radial direction of the hammering block, the line of centres of limited block described in two is perpendicular to fan-shaped described in two The line of centres of block;
It is close to the both sides of each secter pat, and is close to the both sides of each limited block, open up respectively on the side wall of the hammering block There is the passage of the side wall through the hammering block, the passage positioned at each limited block both sides can be in the hammering block and the lower piston Between produce relative rotation to precalculated position and connected with the dredging flow groove.
12. double acting accelerators in down-hole according to claim 11, it is characterised in that recessed on the outer wall of the commutation body There are four equally distributed gas pressure relief slots, each gas pressure relief slot is axially extending each along the commutation body, and each gas pressure relief slot Upwardly extend respectively through the upper surface of the commutation body, each gas pressure relief slot is extended through separately down under the commutation body End face, radial section is formed per two in fan-shaped projection between the adjacent gas pressure relief slot, the projection includes two first Projection and two the second projections;
Two first projections are symmetrical along the axis centre of the commutation body, distinguish on two first projections recessed limited Position groove, two stopper slots are along the axially extending of the commutation body, and two stopper slots are respectively along the commutation body Extend axially upward and through the upper surface of the commutation body, two stopper slots are respectively along the axial direction of the commutation body Extend downwardly and not through the lower surface of the commutation body, the state in the outside of the commutation body is sheathed in the hammering block Under, the limited block is stretched in the stopper slot, and along the radial direction of the commutation body, the radial section product of the stopper slot is big Accumulate in the radial section of the limited block, it is described in the state of producing relative rotation between the hammering block and the commutation body Limited block can be moved in the stopper slot;
Two second projections are symmetrical along the axis centre of the commutation body, offer respectively on two second projections At least one pair of along the commutation body the through hole for extending radially through the commutation body, and the center along second projection and institute The line at the center of the radial section of commutation body is stated, two in through hole described in each pair through hole is symmetrical, in the limit Position block is resisted against in the state of the side of the stopper slot, and in through hole described in each pair and the hammering block fan is located at A connection in the passage of the both sides of shape block, and in the state of the limited block is resisted against the opposite side of the stopper slot, In through hole described in each pair another with the hammering block positioned at the secter pat both sides passage in another connect.
13. double acting accelerators in down-hole according to claim 3, it is characterised in that the lower core pipe and the lower house Between be provided with spline, the spline include multiple key teeths being arranged on the outer wall of the lower core pipe and it is multiple be arranged on it is described Keyway on the inwall of lower house, the key teeth is corresponded with the keyway and arranged, described along the radial direction of the lower house The radial section product of keyway is accumulated more than the radial section of the key teeth, the both sides of each key teeth and the two of the corresponding keyway Gap is respectively provided between the wall of side, in the state of the lower piston drives the lower core pipe to rotate, the key teeth can be corresponding Move in the keyway.
CN201611159804.1A 2016-12-15 2016-12-15 Underground double acting accelerator Active CN106593296B (en)

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CN107313719A (en) * 2017-06-22 2017-11-03 中国石油大学(北京) Circumferential drill hammer accelerator
CN108915591A (en) * 2018-07-05 2018-11-30 中煤科工集团西安研究院有限公司 Underground coal mine approximate horizontal long-hole directional drilling drillstring vibrations drag reduction method
CN108915583A (en) * 2018-06-25 2018-11-30 北京工业大学 Mechanical composite impact drilling speed tool
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CN1397715A (en) * 2002-08-07 2003-02-19 中国地质科学院勘探技术研究所 Hydraulic in-the-hole hammer with dual nozzles and combined valve
US20140338978A1 (en) * 2008-03-13 2014-11-20 Nov Worldwide C.V. Wellbore percussion adapter and tubular connection
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CN111472707A (en) * 2020-04-03 2020-07-31 中国石油天然气股份有限公司 Vibration tool and method for improving drilling speed of drilling machine

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