CN204457422U - composite impact drilling tool - Google Patents
composite impact drilling tool Download PDFInfo
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- CN204457422U CN204457422U CN201420802611.3U CN201420802611U CN204457422U CN 204457422 U CN204457422 U CN 204457422U CN 201420802611 U CN201420802611 U CN 201420802611U CN 204457422 U CN204457422 U CN 204457422U
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Abstract
The utility model is a kind of composite impact drilling tool, and this drilling tool comprises the upper pipe nipple and middle housing body that are fixedly connected with, is linked with drill headstock bottom this middle housing body; Upper pipe nipple inside lower end is provided with a current divider, and flow diverter side wall is provided with split channel; Current divider lower end has been fixedly connected sequentially top nozzle, upper cavity and lower chamber, and drill headstock top fixed cover is provided with lower nozzle, and lower nozzle is slidably arranged in lower chamber; Inside middle housing body, be positioned at the sleeve, end cap and the impact cylinder that to be sequentially with axial and circumferential below pipe nipple from top to bottom and all to fix, impact cylinder inside is coaxially provided with pendulum and commutation cylinder; The high frequency axial impact loading that this drilling tool is produced by top nozzle, upper cavity, lower chamber and lower nozzle acts on rock, drill bit is made easily to cut rock interior, improve efficiency of breaking rock, produced the circumferential shock loading of high frequency simultaneously by the continuous reciprocally swinging of pendulum, prevent drill bit from producing stick-slip phenomenon when penetraction depth is darker.
Description
Technical field
The utility model is about down-hole equipment a kind of in field of oil development, particularly relates to a kind of composite impact drilling tool.
Background technology
Along with the development of petroleum exploration and development, the ratio shared by the Holes of Complicated Wells such as deep-well, horizontal well increases gradually.These Holes of Complicated Wells propose much new challenge to drilling well, and the rate of penetration wherein improving drilling well is current urgent problem.In these Holes of Complicated Wells, the operating mode more complicated of down-hole, comprising the increase of the burden pressure of rock, the borehole wall to the increase etc. of drilling tool frictional resistance, these all propose very large challenge to existing drilling technology, not only can cause the reduction of rate of penetration, also can cause the drilling failures such as bit freezing, thus add the cost of drilling well greatly.
Existing drilling mode mainly realizes brokenly rock by the rotation of drill bit to rock shearing, impact.Drill bit mainly comprises PDC drill bit and rock bit.Rock bit carrys out brokenly rock mainly through the mode of formation rock generation impact, granulitization, grinding, and this mode of creeping into is a kind of effective means of boring hardpan at present, but rate of penetration is lower.PDC drill bit is mainly to cut, to shear and fashion of extrusion broken formation, this drill bit bore meet hardpan time due to penetraction depth more shallow, therefore efficiency of breaking rock reduces, " stick-slip " phenomenon is there will be when the pressure of the drill increases, this produces very serious adverse effect to drilling well in drilling process, as reduced the dropout etc. of the application life of drilling tool, the screw thread of drilling rod junction.The torsional impact drilling tool used in current drillng operation can solve the stick slip vibration problem of drill bit preferably, comprising the torsional impact drilling tool etc. of Canadian torkbuster reverse impactor, drilling technology research institute of Shengli Petroleum Administration Bureau.But this instrument is passive " stick-slip " phenomenon solving drill bit, do not change the broken rock mode of drill bit, still the scraping of the cutting teeth of drill bit is utilized to carry out brokenly rock, because the characteristic of this broken rock mode itself limits, the raising of its efficiency of breaking rock also has certain limitation, such as, can not increase the cutting depth etc. of cutting teeth.
Also have in drilling process and use various axial impact drilling tool to improve rate of penetration, namely by providing the axial impact force of a high frequency to carry out fractured rock at drill bit place.This instrument is generally by hydraulic-driven block stamp axial impact drill bit, forms larger axial impact loading, makes rock formation volumetric fracture, or forms crack, thus increases the crushing efficiency of rock.Based on this broken rock principle, have developed multiple axial impact device both at home and abroad, kind is a lot, can be divided into two large classes: valve type impactor and jet flow type shocker by operating principle.These instruments are applied at situ of drilling well, have certain effect, but also there is more problem.The wherein complicated structure of valve type impactor, the quality of impact hammer is comparatively large, and ballistic work is comparatively large, proposes very high requirement to the life-span of the vulnerable area in instrument, especially can cause the reduction of the component life of sealing and valve body, thus make instrument premature failure.And the effect that jet flow type shocker is applied at the scene is better, but be subject to the restriction of its jet current principle itself, the axial impact merit of current used jet flow type shocker is less.And less ballistic work (lower than 300J) can not effective fractured rock, so just can not play the advantage of this rock fracture in dynamic indentation mode, therefore the effect of this instrument when hardpan creeps into is general.
In conjunction with the pluses and minuses of above-mentioned two kinds of drill bit drilling modes, be summarized as follows: because the anti-shear ability of rock is lower, make rock be easier to by scraping, therefore the efficiency of breaking rock of PDC drill bit is higher than the efficiency of breaking rock of rock bit in theory.As long as the penetraction depth that can improve PDC drill bit does not cause the stick slip vibration of drill bit simultaneously, just greatly can improve and creep into rate of penetration.But by the restriction of prior art, there is no the instrument that can increase PDC drill bit penetraction depth when boring chance hardpan.
Thus, the present inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of composite impact drilling tool, to overcome the defect of prior art.
Utility model content
The purpose of this utility model is to provide a kind of composite impact drilling tool, to improve the efficiency of breaking rock of hardpan, reduces the drilling cost of hardpan.
Another object of the present utility model is to provide a kind of composite impact drilling tool, and effect that drill bit has " three-dimensional broken rock ", eliminates or reduce " stick-slip " effect, improving the stability of drilling tool, increase the service life.
The purpose of this utility model is achieved in that a kind of composite impact drilling tool, and this drilling tool comprises the upper pipe nipple and middle housing body that are fixedly connected with, is linked with drill headstock bottom this middle housing body;
Described upper pipe nipple is provided with centre bore, and this centre bore inside lower end is provided with a cylindrical shape current divider, and flow diverter side wall is provided with split channel; Described current divider lower end has been fixedly connected sequentially top nozzle, upper cavity and lower chamber, and described drill headstock top fixed cover is provided with lower nozzle, and lower nozzle is slidably arranged in lower chamber;
Inside middle housing body, be positioned at the sleeve, end cap and the impact cylinder that to be sequentially with axial and circumferential below pipe nipple from top to bottom and all to fix, the top of sleeve leans bottom upper pipe nipple, leans the stage portion inside middle housing body bottom impact cylinder; Described end cap is provided with centre bore, and current divider and top nozzle to be arranged in this centre bore and to have the first gap with this centre bore hole wall, are formed with the annular space with split channel conducting inside the sleeve between above end cap and bottom upper pipe nipple; Below end cap and the outside being positioned at top nozzle, upper cavity and lower chamber is arranged with a screen casing, screen casing bottom is resisted against the stage portion outside lower chamber, described screen casing inwall and top nozzle, have the second gap between upper cavity and the outer wall of lower chamber, described second gap is communicated with the first gap; Outside screen casing, be coaxially provided with commutation cylinder, commutation cylinder is by screen casing lower outside one stage portion axial location, and be coaxially provided with cylindrical shape pendulum outside commutation cylinder, cylindrical shape pendulum is by impact cylinder lower inside axial location;
The base be connected with drill headstock is formed bottom described impact cylinder, on described impact cylinder inwall in right-angled intersection ground be arranged with a pair axially extension and close to base the first fan groove and axially extend to the second fan groove of base for a pair, the fan angle of described first fan groove is greater than the fan angle of the second fan groove; Impact cylinder outer wall between the first fan groove and the second fan groove is respectively equipped with a guiding gutter, four guiding gutters axially to downward-extension close to bottom impact body, be provided with the pod apertures of through impact cylinder barrel in each guiding gutter; In four guiding gutters, wherein a pair symmetrical guiding gutter is the first guiding gutter, and another is the second guiding gutter to symmetrical guiding gutter; The base of described impact cylinder is provided with the polygonal through hole be connected with drill headstock, and each sidewall of this polygonal through hole is respectively equipped with the first jet orifice be communicated with base upper surface; The outer wall of described drill headstock is respectively equipped with the second jet orifice with the first jet orifice conducting; The sidewall of described end cap is circumferentially with four connectivity slots corresponding with described guiding gutter, described sleeve bottom circumference is also provided with four short slots relative with connectivity slot; Thus, sequentially forming a road highly pressurised liquid by annular space, short slot, connectivity slot, guiding gutter and pod apertures enters runner; Order forms another road highly pressurised liquid by the sieve aperture on annular space, the first gap, the second gap and screen casing and enters runner;
The outer tube wall of described cylindrical shape pendulum is arranged with the first fan-shaped projection axially arranged for a pair, and the barrel of next-door neighbour the first fan-shaped projection both sides is respectively equipped with the first assignment hole and the second assignment hole; Pendulum inner tube wall is arranged with a pair the second fan-shaped projection axially arranged, and the barrel of next-door neighbour the second fan-shaped projection both sides is respectively equipped with the 3rd assignment hole and the 4th assignment hole; Described first fan-shaped projection and the second fan-shaped projection are that right-angled intersection is arranged, and the fan angle of the first fan-shaped projection is greater than the fan angle of the second fan-shaped projection; Described first fan-shaped projection is swingingly arranged in the first fan groove of impact cylinder;
The outer tube wall of described commutation cylinder is that right-angled intersection formula is arranged with the 3rd fan-shaped projection axially arranged for a pair and the four fan-shaped projection axially arranged for a pair; On each 3rd fan-shaped projection and contiguous 3rd fan-shaped projection both sides are respectively equipped with the first commutation hole and the second commutation hole; The outer wall of each four fan-shaped projection is respectively equipped with one axially to extend and close to the 3rd fan groove bottom it; On described pendulum second fan-shaped projection is swingingly arranged in the 3rd fan groove of commutation cylinder.
In a better embodiment of the present utility model, the top of described cylindrical shape current divider is circumferentially with outward flange, and described split channel is circumferentially with multiple; Shunt base is provided with the internal thread be connected with top nozzle.
In a better embodiment of the present utility model, described top nozzle is cylindrical, and upper and lower end is equipped with external screw thread, and center is provided with the injection runner of bore convergent from top to bottom.
In a better embodiment of the present utility model, the cylinder-like structure that described upper cavity is open top, bottom is provided with convex-shaped bottom surface, the center of this convex-shaped bottom surface is provided with the first through spout, and the top of upper cavity is provided with internal thread, and bottom is provided with external screw thread; Described lower chamber is the columnar structured of up/down perforation, and the top of lower chamber is provided with internal thread; Described lower nozzle is bottom opening, top is provided with the columnar structured of epirelief end face, and the center of this convex-shaped end face is provided with the second through spout; Described lower nozzle inner walls is provided with screw thread and is fixedly connected with the top of drill headstock, and the centre bore on described second spout and drill headstock is coaxially arranged.
In a better embodiment of the present utility model, described drill headstock is provided with a nut, and this nut is hung on the shoulder hole bottom middle housing body; The interface arrangment that circumference is located is provided with between described middle housing body bottom and drill headstock.
In a better embodiment of the present utility model, the on described pendulum first fan-shaped projection extends to bottom it by pendulum top; Second fan-shaped projection is extended close to bottom it by pendulum top.
In a better embodiment of the present utility model, each pod apertures on described impact cylinder, each assignment hole on pendulum are consistent with the rational height in each commutation hole on commutation cylinder.
In a better embodiment of the present utility model, the fan angle of the first fan groove on described impact cylinder is 80 °; The fan angle of the on pendulum first fan-shaped projection is 40 °, and the fan angle of the second fan-shaped projection is 15 °; On described commutation cylinder, the fan angle of the 3rd fan-shaped projection is 60 °, and the fan angle of the 3rd fan groove on four fan-shaped projection is 30 °.
From the above mentioned, the utility model composite impact drilling tool, combined axis is to the feature of churn drilling tools and torsion impact drilling tool, the solid proposing a kind of high efficiency composition breaks rock mode, namely a drilling tool is connect at PDC bit upper end, produce the axial and circumferential shock loading of high frequency simultaneously, the main body of this broken rock mode is by PDC bit cutting rock, and in the drilling tool of PDC bit upper end, pass through top nozzle, upper cavity, the high frequency axial impact loading that lower chamber and lower nozzle produce acts on rock, rock is made to produce crack even directly fragmentation, PDC drill bit so just can be made more easily to cut rock interior, increase single penetraction depth, thus raising efficiency of breaking rock, simultaneously, the circumferential shock loading of high frequency is produced by the continuous reciprocally swinging of pendulum, prevent PDC drill bit from producing stick-slip phenomenon when penetraction depth is darker.So just can form three-dimensional broken rock, greatly can improve the rate of penetration of drilling well, the problem that the rate of penetration that this broken rock mode can solve hardpan is low, thus greatly reduce drilling cost.This spudder's prodigiosin improves the stability of instrument, increases the service life.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: be the structural representation of the utility model composite impact drilling tool.
Fig. 2: be the structural representation of pipe nipple upper in the utility model.
Fig. 3: be the structural representation of current divider in the utility model.
Fig. 4: be the structural representation of top nozzle in the utility model.
Fig. 5: be the structural representation of upper cavity in the utility model.
Fig. 6: be the structural representation of lower chamber in the utility model.
Fig. 7: be the structural representation of nozzle lower in the utility model.
Fig. 8: be the structural representation of end cap in the utility model.
Fig. 9: be the structural representation of the utility model middle sleeve.
Figure 10: be the structural representation of screen casing in the utility model.
Figure 11 A: be the structural representation one of impact cylinder in the utility model.
Figure 11 B: be the structural representation two of impact cylinder in the utility model.
Figure 11 C: be the structural representation three of impact cylinder in the utility model.
Figure 12 A: be the perspective view of drill headstock in the utility model.
Figure 12 B: be the sectional structure schematic diagram of drill headstock in the utility model.
Figure 13 A: be the structural representation one of pendulum in the utility model.
Figure 13 B: be the structural representation two of pendulum in the utility model.
Figure 14 A: be the structural representation one of the cylinder that commutates in the utility model.
Figure 14 B: be the structural representation two of the cylinder that commutates in the utility model.
Figure 15 A: be the perspective view of middle housing body in the utility model.
Figure 15 B: be the sectional structure schematic diagram of middle housing body in the utility model.
Figure 16 A: for pendulum in the utility model and commutation cylinder in impact cylinder all counter-clockwise swing to schematic diagram during extreme position.
Figure 16 B: for pendulum in the utility model in impact cylinder clockwise oscillation to extreme position, and the schematic diagram when cylinder that commutates also does not reach extreme clockwise position.
Figure 16 C: for pendulum in the utility model and commutation cylinder in impact cylinder all clockwise oscillation to schematic diagram during extreme position.
Figure 16 D: for pendulum in the utility model in impact cylinder counter-clockwise swing to extreme position, and the schematic diagram when cylinder that commutates also does not reach extreme counterclockwise position.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model is described.
As shown in Figure 1, the utility model proposes a kind of composite impact drilling tool 100, this drilling tool 100 comprises the upper pipe nipple 1 and middle housing body 2 that are fixedly connected with, be linked with drill headstock 3 bottom this middle housing body 2, inside, drill headstock 3 lower end is provided with the taper box connecting drill bit (not shown); Described upper pipe nipple 1 is provided with centre bore 11 (as shown in Figure 2), upper pipe nipple 1 top can connect bores very (not shown), this centre bore 11 inside lower end is provided with a cylindrical shape current divider 12, as shown in Figure 3, the top of this current divider is circumferentially with outward flange 121, and described flow diverter side wall is provided with multiple split channel 122; Described current divider 12 lower end has been fixedly connected sequentially top nozzle 41, upper cavity 42 and lower chamber 43, and described drill headstock 3 top fixed cover is provided with lower nozzle 44, and lower nozzle 44 is slidably arranged in lower chamber 43; As shown in Figure 4, described top nozzle 41 is cylindrical, and center is provided with the injection runner 411 of bore convergent from top to bottom; As shown in Figure 5, the cylinder-like structure that described upper cavity 42 is open top, bottom is provided with convex-shaped bottom surface 421, the center of this convex-shaped bottom surface 421 is provided with the first through spout 422; As shown in Figure 6, described lower chamber 43 is the columnar structured of up/down perforation; Described current divider 12, top nozzle 41, be between upper cavity 42 and lower chamber 43 and be threaded; As shown in Figure 7, described lower nozzle 44 is bottom opening, top is provided with the columnar structured of epirelief end face 441, and the center of this convex-shaped end face 441 is provided with the second through spout 442; Described lower nozzle 44 inwall is provided with screw thread and is fixedly connected with the top of drill headstock 3, and lower nozzle 44 can move axially together along with drill headstock, and described injection runner 411, first spout 422, second spout 442 is coaxially arranged with the centre bore 31 on drill headstock 3; As shown in Figure 1, the sleeve 51, end cap 52 and the impact cylinder 6 that to be sequentially with axial and circumferential below pipe nipple 1 from top to bottom and all to fix is positioned at inside middle housing body 2, the top of sleeve 51 leans bottom upper pipe nipple 1, leans the stage portion 21 in middle housing body 2 lower inside bottom impact cylinder 6; Described end cap 52 is provided with centre bore 521 (as shown in Figure 8), current divider 12 and top nozzle 41 to be arranged in this centre bore 521 and to have the first gap L 1 with this centre bore 521 hole wall, are formed with the annular space K with split channel 122 conducting inside the sleeve 51 between above end cap 52 and bottom upper pipe nipple 1; Below end cap 52 and the outside being positioned at top nozzle 41, upper cavity 42 and lower chamber 43 is arranged with a screen casing 9, screen casing 9 bottom is resisted against the stage portion outside lower chamber 43, described screen casing 9 inwall and top nozzle 41, have the second gap L 2 between upper cavity 42 and the outer wall of lower chamber 43, described second gap L 2 is communicated with the first gap L 1; Outside screen casing 9, be coaxially provided with commutation cylinder 8, commutation cylinder 8 is by screen casing 9 lower outside one stage portion 91 axial location (as shown in Figure 10), and be coaxially provided with cylindrical shape pendulum 7 outside commutation cylinder 8, cylindrical shape pendulum 7 is by impact cylinder 8 lower inside axial location;
As shown in Fig. 1, Figure 11 A ~ Figure 11 C, the base 65 be connected with drill headstock 3 is formed bottom described impact cylinder 6, on described impact cylinder 6 inwall in right-angled intersection ground be arranged with a pair axially extension and close to base 65 the first fan groove 61 and axially extend to the second fan groove 62 of base 65 for a pair, the fan angle of described first fan groove 61 is greater than the fan angle of the second fan groove 62; Impact cylinder 6 outer wall between the first fan groove 61 and the second fan groove 62 is respectively equipped with a guiding gutter 63, four guiding gutters 63 axially to downward-extension close to bottom impact body, be provided with the pod apertures 64 of through impact cylinder barrel in each guiding gutter 63; In four guiding gutters 63, wherein a pair symmetrical guiding gutter is the first guiding gutter 631, and corresponding pod apertures is 641, and another is the second guiding gutter 632 to symmetrical guiding gutter, and corresponding pod apertures is 642; The base 65 of described impact cylinder is provided with polygon (the can be hexagon) through hole 651 be connected with drill headstock 3, and each sidewall of this polygonal through hole 651 is respectively equipped with the first jet orifice 6511 be communicated with base upper surface; As shown in Figure 12 A, Figure 12 B, the outer wall of described drill headstock 3 is respectively equipped with and is communicated in centre bore 31 with the second jet orifice 32, second jet orifice 32 of the first jet orifice 6511 conducting simultaneously; As shown in Figure 1, described drill headstock 3 is provided with a nut 34, and this nut 34 is hung on the shoulder hole 22 bottom middle housing body 2 (as shown in Figure 15 A, Figure 15 B), and drill headstock 3 can move 3 ~ 5mm vertically; The interface arrangment (as: draw-in groove 33 on the fixture block 23 of middle housing body 2 bottom and drill headstock) that circumference is located is provided with between described middle housing body 2 bottom and drill headstock 3; As shown in Figure 8, the sidewall of described end cap 52 is circumferentially with four connectivity slots 522 corresponding with described guiding gutter 63, bottom described sleeve 51, circumference is also provided with four short slots 511 (as shown in Figure 9) relative with connectivity slot 522; Thus, sequentially forming first via highly pressurised liquid by annular space K, short slot 511, connectivity slot 522, guiding gutter 63 and pod apertures 64 enters runner; Sequentially forming the second road highly pressurised liquid by the sieve aperture 92 on annular space K, the first gap L 1, second gap L 2 and screen casing 9 enters runner again;
As shown in Fig. 1, Figure 13 A, Figure 13 B, the outer tube wall of described cylindrical shape pendulum 7 is arranged with the first fan-shaped projection 71 axially arranged for a pair, and the barrel of next-door neighbour the first fan-shaped projection 71 both sides is respectively equipped with the first assignment hole 711 and the second assignment hole 712; Pendulum 7 inner tube wall is arranged with a pair the second fan-shaped projection 72 axially arranged, and the barrel of next-door neighbour the second fan-shaped projection 72 both sides is respectively equipped with the 3rd assignment hole 721 and the 4th assignment hole 722; Described first fan-shaped projection 71 and the second fan-shaped projection 72 are arranged in right-angled intersection, and the fan angle of the first fan-shaped projection 71 is greater than the fan angle of the second fan-shaped projection 72; On described pendulum first fan-shaped projection 71 extends to bottom it by pendulum top; Second fan-shaped projection 72 is extended close to bottom it by pendulum top; Cylindrical shape pendulum 7 is coaxially arranged in impact cylinder 6, and described first fan-shaped projection 71 is swingingly arranged in the first fan groove 61 of impact cylinder;
As shown in Fig. 1, Figure 14 A, Figure 14 B, the outer tube wall of described commutation cylinder 8 is that right-angled intersection formula is arranged with the 3rd fan-shaped projection 81 axially arranged for a pair and the four fan-shaped projection 82 axially arranged for a pair; On each 3rd fan-shaped projection 81 and contiguous 3rd fan-shaped projection 81 both sides are respectively equipped with the first commutation hole 811 and the second commutation hole 812; The outer wall of each four fan-shaped projection 82 is respectively equipped with one axially to extend and close to the 3rd fan groove 821 bottom it; It is inner that commutation cylinder 8 is coaxially arranged on pendulum 7, and the on described pendulum 7 second fan-shaped projection 72 is swingingly arranged in the 3rd fan groove 821 of commutation cylinder 8;
Each pod apertures on described impact cylinder 6, each assignment hole on pendulum 7 are consistent with the rational height in each commutation hole on commutation cylinder 8.
Further, in the present embodiment, the fan angle of the first fan groove 61 on described impact cylinder 6 is 80 °; The fan angle of the on pendulum 7 first fan-shaped projection 71 is 40 °, and the fan angle of the second fan-shaped projection 72 is 15 °; On described commutation cylinder 8, the fan angle of the 3rd fan-shaped projection 81 is 60 °, and the fan angle of the 3rd fan groove 821 on four fan-shaped projection 82 is 30 °.
Composite impact drilling tool 100 of the present utility model operationally, its upper end connects drill collar, lower end connects drill bit, as shown in Figure 1, it is inner that cleaner for high-pressure drilling fluid enters current divider 12 by the centre bore 11 of upper pipe nipple, here cleaner for high-pressure drilling fluid is shunted, wherein a part of cleaner for high-pressure drilling fluid flows directly into top nozzle 41 internal cavity by the center flow channels of current divider 12, forming jet by injection runner 411 injects in upper cavity 42, fluid forms vorticity fluctuation in upper cavity 42, form pulsing jet and flow in lower chamber 43 by the first spout 422 in the middle part of upper cavity 42 lower end, now pulsing jet forms new vorticity fluctuation in lower chamber 43, and sprayed downwards by second spout 442 on lower nozzle 44 top, flow in the centre bore 31 of drill headstock 3, thus flowed out by the nozzle of drill bit.The pulse formed in upper cavity 42 can be amplified by the new pulsing jet that lower nozzle 44 place is formed, this strand of pulsing jet can produce very large pulsatile impact power to lower nozzle 44 top entering lower nozzle 44 exit, this impact force can act directly on drill headstock 3, thus produce larger axial impact force and be delivered on rock by drill bit, form broken rock, simultaneously because the pressure of upper drilling string is born at drill bit place always, in the gap of axial impact force, drill headstock 3 can be moved upwards up to extreme position due to pressure, drill headstock 3 gets back to the impact that initial position waits for next pulsing jet like this, thus form the pulsatile impact load of strong frequency low-amplitude.
Another part fluid simultaneously in current divider 12 flows in the annular space K of end cap 52 and upper pipe nipple 1 formation by split channel 122, high-pressure fluid is again shunted in annular space K, wherein a part of high-pressure fluid flows into first via highly pressurised liquid and enters runner, and another part high-pressure fluid flows into the second road highly pressurised liquid and enters runner; Thus, drive pendulum 7 and commutation cylinder 8 in impact cylinder 6, do clockwise and counterclockwise periodic oscillations, thus circumferential impact is implemented to drill bit.
As shown in Figure 16 A, for pendulum 7 and commutation cylinder 8 in impact cylinder 6 all counter-clockwise swing to schematic diagram during extreme position, now, the second commutation hole 812 in commutation cylinder 8 just with the corresponding conducting of the second assignment hole 712 in pendulum 7, and the first assignment hole 711 and low pressure return communication in pendulum, thus, high-pressure fluid enters runner by the second road highly pressurised liquid and flows into the second commutation hole 812 of commutation cylinder 8 and the second assignment hole 712 of pendulum 7, and enter the first fan groove 61 one inside and between the first fan-shaped projection 71 (as shown by arrows in FIG. direction), the first fan-shaped projection 71 of pendulum 7 is driven to rotate clockwise, the low-pressure fluid of the first fan groove 61 inside another and between the first fan-shaped projection 71 is by entering low pressure return path (as shown by arrows in FIG. direction) by the first assignment hole 711, and enter drill headstock discharge by the first jet orifice 6511 of lower end, meanwhile, the cylinder 8 that commutates drives fan-shaped projection 71 rotating in same direction with first by the second fan-shaped projection 72 of pendulum,
As shown in fig 16b, when pendulum 7 in impact cylinder 6 clockwise oscillation to extreme position, and the cylinder 8 that commutates is not when also reaching extreme clockwise position, the 3rd assignment hole 721 on pendulum just with the second pod apertures 642 conducting on impact cylinder, and the second fan groove 62 conducting of the 4th assignment hole 722 on pendulum and impact cylinder; Thus, high-pressure fluid by first via highly pressurised liquid enter runner flow into the 3rd assignment hole 721, and enter the 3rd fan groove 821 one inside and between the second fan-shaped projection 72, thus, continue drive commutation cylinder 8 rotate clockwise; The low-pressure fluid of 3rd fan groove 821 inside another and between the second fan-shaped projection 72 enters drill headstock by the 4th assignment hole 722 and the second fan groove 62 by the first jet orifice 6511 of lower end and discharges;
As shown in figure 16 c, for pendulum 7 and commutation cylinder 8 impact cylinder 6 in clockwise be all rocked to extreme position time schematic diagram, now, the first commutation hole 811 in commutation cylinder 8 just with the corresponding conducting of the first assignment hole 711 in pendulum 7, and the second assignment hole 712 and low pressure return communication in pendulum, thus, high-pressure fluid enters runner by the second road highly pressurised liquid and flows into the first commutation hole 811 of commutation cylinder 8 and the first assignment hole 711 of pendulum 7, and enter the first fan groove 61 one inside and between the first fan-shaped projection 71, the first fan-shaped projection 71 of pendulum 7 is driven to rotate counterclockwise, the low-pressure fluid of the first fan groove 61 inside another and between the first fan-shaped projection 71 is by entering low pressure return path by the second assignment hole 712, and enter drill headstock discharge by the first jet orifice 6511 of lower end, meanwhile, the cylinder 8 that commutates drives fan-shaped projection 71 rotating in same direction with first by the second fan-shaped projection 72 of pendulum,
As seen in fig. 16d, when pendulum 7 in impact cylinder 6 counter-clockwise swing to extreme position, and the cylinder 8 that commutates is not when also reaching extreme counterclockwise position, the 4th assignment hole 722 on pendulum just with the first pod apertures 641 conducting on impact cylinder, and the second fan groove 62 conducting of the 3rd assignment hole 721 on pendulum and impact cylinder; Thus, high-pressure fluid by first via highly pressurised liquid enter runner flow into the 4th assignment hole 722, and enter the 3rd fan groove 821 one inside and between the second fan-shaped projection 72, thus, continue drive commutation cylinder 8 rotate counterclockwise; The low-pressure fluid of 3rd fan groove 821 inside another and between the second fan-shaped projection 72 enters drill headstock by the 3rd assignment hole 721 and the second fan groove 62 by the first jet orifice 6511 of lower end and discharges; Make pendulum 7 and commutation cylinder 8 in impact cylinder 6 again all counter-clockwise swing to extreme position (initial position as shown in Figure 16 A), such drilling tool 100 completes the circumferential movement of one-period, twice circumferential shock loading is provided to drill bit, so, under the driving of high-pressure fluid, pendulum 7 constantly reciprocally swinging implements circumference impact to drill bit.
From the above mentioned, the utility model composite impact drilling tool, combined axis is to the feature of churn drilling tools and torsion impact drilling tool, the solid proposing a kind of high efficiency composition breaks rock mode, namely a drilling tool is connect at PDC bit upper end, produce the axial and circumferential shock loading of high frequency simultaneously, the main body of this broken rock mode is by PDC bit cutting rock, and in the drilling tool of PDC bit upper end, pass through top nozzle, upper cavity, the high frequency axial impact loading that lower chamber and lower nozzle produce acts on rock, rock is made to produce crack even directly fragmentation, PDC drill bit so just can be made more easily to cut rock interior, increase single penetraction depth, thus raising efficiency of breaking rock, simultaneously, the circumferential shock loading of high frequency is produced by the continuous reciprocally swinging of pendulum, prevent PDC drill bit from producing stick-slip phenomenon when penetraction depth is darker.So just can form three-dimensional broken rock, greatly can improve the rate of penetration of drilling well, the problem that the rate of penetration that this broken rock mode can solve hardpan is low, thus greatly reduce drilling cost.
Composite impact drilling tool of the present utility model, can eliminate " stick-slip " effect of drill bit, can produce the axial impact loading of frequency low-amplitude, and the structure producing axial impact is comparatively simple, and movable part is less; The load of this frequency low-amplitude can improve the extension ability of drilling tool; This drilling tool can change frequency and the ballistic work of axial impact loading by the size changing nozzle.This spudder's prodigiosin improves the efficiency of breaking rock of hardpan, reduces the drilling cost of hardpan, improves the stability of drilling tool, increases the service life.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (8)
1. a composite impact drilling tool, is characterized in that: this drilling tool comprises the upper pipe nipple and middle housing body that are fixedly connected with, is linked with drill headstock bottom this middle housing body;
Described upper pipe nipple is provided with centre bore, and this centre bore inside lower end is provided with a cylindrical shape current divider, and flow diverter side wall is provided with split channel; Described current divider lower end has been fixedly connected sequentially top nozzle, upper cavity and lower chamber, and described drill headstock top fixed cover is provided with lower nozzle, and lower nozzle is slidably arranged in lower chamber;
Inside middle housing body, be positioned at the sleeve, end cap and the impact cylinder that to be sequentially with axial and circumferential below pipe nipple from top to bottom and all to fix, the top of sleeve leans bottom upper pipe nipple, leans the stage portion inside middle housing body bottom impact cylinder; Described end cap is provided with centre bore, and current divider and top nozzle to be arranged in this centre bore and to have the first gap with this centre bore hole wall, are formed with the annular space with split channel conducting inside the sleeve between above end cap and bottom upper pipe nipple; Below end cap and the outside being positioned at top nozzle, upper cavity and lower chamber is arranged with a screen casing, screen casing bottom is resisted against the stage portion outside lower chamber, described screen casing inwall and top nozzle, have the second gap between upper cavity and the outer wall of lower chamber, described second gap is communicated with the first gap; Outside screen casing, be coaxially provided with commutation cylinder, commutation cylinder is by screen casing lower outside one stage portion axial location, and be coaxially provided with cylindrical shape pendulum outside commutation cylinder, cylindrical shape pendulum is by impact cylinder lower inside axial location;
The base be connected with drill headstock is formed bottom described impact cylinder, on described impact cylinder inwall in right-angled intersection ground be arranged with a pair axially extension and close to base the first fan groove and axially extend to the second fan groove of base for a pair, the fan angle of described first fan groove is greater than the fan angle of the second fan groove; Impact cylinder outer wall between the first fan groove and the second fan groove is respectively equipped with a guiding gutter, four guiding gutters axially to downward-extension close to bottom impact body, be provided with the pod apertures of through impact cylinder barrel in each guiding gutter; In four guiding gutters, wherein a pair symmetrical guiding gutter is the first guiding gutter, and another is the second guiding gutter to symmetrical guiding gutter; The base of described impact cylinder is provided with the polygonal through hole be connected with drill headstock, and each sidewall of this polygonal through hole is respectively equipped with the first jet orifice be communicated with base upper surface; The outer wall of described drill headstock is respectively equipped with the second jet orifice with the first jet orifice conducting; The sidewall of described end cap is circumferentially with four connectivity slots corresponding with described guiding gutter, described sleeve bottom circumference is also provided with four short slots relative with connectivity slot; Thus, sequentially forming a road highly pressurised liquid by annular space, short slot, connectivity slot, guiding gutter and pod apertures enters runner; Order forms another road highly pressurised liquid by the sieve aperture on annular space, the first gap, the second gap and screen casing and enters runner;
The outer tube wall of described cylindrical shape pendulum is arranged with the first fan-shaped projection axially arranged for a pair, and the barrel of next-door neighbour the first fan-shaped projection both sides is respectively equipped with the first assignment hole and the second assignment hole; Pendulum inner tube wall is arranged with a pair the second fan-shaped projection axially arranged, and the barrel of next-door neighbour the second fan-shaped projection both sides is respectively equipped with the 3rd assignment hole and the 4th assignment hole; Described first fan-shaped projection and the second fan-shaped projection are that right-angled intersection is arranged, and the fan angle of the first fan-shaped projection is greater than the fan angle of the second fan-shaped projection; Described first fan-shaped projection is swingingly arranged in the first fan groove of impact cylinder;
The outer tube wall of described commutation cylinder is that right-angled intersection formula is arranged with the 3rd fan-shaped projection axially arranged for a pair and the four fan-shaped projection axially arranged for a pair; On each 3rd fan-shaped projection and contiguous 3rd fan-shaped projection both sides are respectively equipped with the first commutation hole and the second commutation hole; The outer wall of each four fan-shaped projection is respectively equipped with one axially to extend and close to the 3rd fan groove bottom it; On described pendulum second fan-shaped projection is swingingly arranged in the 3rd fan groove of commutation cylinder.
2. composite impact drilling tool as claimed in claim 1, is characterized in that: the top of described cylindrical shape current divider is circumferentially with outward flange, and described split channel is circumferentially with multiple; Shunt base is provided with the internal thread be connected with top nozzle.
3. composite impact drilling tool as claimed in claim 2, it is characterized in that: described top nozzle is cylindrical, and upper and lower end is equipped with external screw thread, center is provided with the injection runner of bore convergent from top to bottom.
4. composite impact drilling tool as claimed in claim 3, it is characterized in that: the cylinder-like structure that described upper cavity is open top, bottom is provided with convex-shaped bottom surface, the center of this convex-shaped bottom surface is provided with the first through spout, and the top of upper cavity is provided with internal thread, and bottom is provided with external screw thread; Described lower chamber is the columnar structured of up/down perforation, and the top of lower chamber is provided with internal thread; Described lower nozzle is bottom opening, top is provided with the columnar structured of epirelief end face, and the center of this convex-shaped end face is provided with the second through spout; Described lower nozzle inner walls is provided with screw thread and is fixedly connected with the top of drill headstock, and the centre bore on described second spout and drill headstock is coaxially arranged.
5. composite impact drilling tool as claimed in claim 4, it is characterized in that: described drill headstock is provided with a nut, this nut is hung on the shoulder hole bottom middle housing body; The interface arrangment that circumference is located is provided with between described middle housing body bottom and drill headstock.
6. composite impact drilling tool as claimed in claim 1, is characterized in that: the on described pendulum first fan-shaped projection extends to bottom it by pendulum top; Second fan-shaped projection is extended close to bottom it by pendulum top.
7. composite impact drilling tool as claimed in claim 1, is characterized in that: each pod apertures on described impact cylinder, each assignment hole on pendulum are consistent with the rational height in each commutation hole on commutation cylinder.
8. composite impact drilling tool as claimed in claim 1, is characterized in that: the fan angle of the first fan groove on described impact cylinder is 80 °; The fan angle of the on pendulum first fan-shaped projection is 40 °, and the fan angle of the second fan-shaped projection is 15 °; On described commutation cylinder, the fan angle of the 3rd fan-shaped projection is 60 °, and the fan angle of the 3rd fan groove on four fan-shaped projection is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420802611.3U CN204457422U (en) | 2014-12-17 | 2014-12-17 | composite impact drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420802611.3U CN204457422U (en) | 2014-12-17 | 2014-12-17 | composite impact drilling tool |
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| Publication Number | Publication Date |
|---|---|
| CN204457422U true CN204457422U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420802611.3U Withdrawn - After Issue CN204457422U (en) | 2014-12-17 | 2014-12-17 | composite impact drilling tool |
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| Country | Link |
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| CN (1) | CN204457422U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563862A (en) * | 2014-12-17 | 2015-04-29 | 中国石油大学(北京) | Composite impact well drilling tool |
| CN106150349A (en) * | 2016-07-14 | 2016-11-23 | 张静 | A kind of circumference axial vacuum impact speed-raising instrument |
| CN108590510A (en) * | 2018-04-12 | 2018-09-28 | 中国石油大学(北京) | Rotating flow distribution formula composite impact device |
| CN110454083A (en) * | 2019-08-21 | 2019-11-15 | 北京众英泰科能源科技有限公司 | With the circumferential power drill bit that spins |
| CN110513036A (en) * | 2019-08-21 | 2019-11-29 | 北京众英泰科能源科技有限公司 | Helicoid hydraulic motor with circumferential power of spinning |
| CN112065278A (en) * | 2020-09-17 | 2020-12-11 | 重庆科技学院 | Down-the-hole hammer swing orienting device |
| CN112855059A (en) * | 2021-01-22 | 2021-05-28 | 中海油能源发展股份有限公司 | All-metal friction-reducing and resistance-reducing oscillation tool |
| CN113006682A (en) * | 2021-03-23 | 2021-06-22 | 北京工业大学 | Axial impact oscillation screw drill |
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2014
- 2014-12-17 CN CN201420802611.3U patent/CN204457422U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563862A (en) * | 2014-12-17 | 2015-04-29 | 中国石油大学(北京) | Composite impact well drilling tool |
| CN106150349A (en) * | 2016-07-14 | 2016-11-23 | 张静 | A kind of circumference axial vacuum impact speed-raising instrument |
| CN108590510A (en) * | 2018-04-12 | 2018-09-28 | 中国石油大学(北京) | Rotating flow distribution formula composite impact device |
| CN110454083A (en) * | 2019-08-21 | 2019-11-15 | 北京众英泰科能源科技有限公司 | With the circumferential power drill bit that spins |
| CN110513036A (en) * | 2019-08-21 | 2019-11-29 | 北京众英泰科能源科技有限公司 | Helicoid hydraulic motor with circumferential power of spinning |
| CN110454083B (en) * | 2019-08-21 | 2021-09-14 | 北京众英泰科能源科技有限公司 | Drill bit with circumferential rotary impact force |
| CN110513036B (en) * | 2019-08-21 | 2021-09-17 | 东营利丰化工新材料有限公司 | Screw drill with circumferential rotary impact force |
| CN112065278A (en) * | 2020-09-17 | 2020-12-11 | 重庆科技学院 | Down-the-hole hammer swing orienting device |
| CN112855059A (en) * | 2021-01-22 | 2021-05-28 | 中海油能源发展股份有限公司 | All-metal friction-reducing and resistance-reducing oscillation tool |
| CN113006682A (en) * | 2021-03-23 | 2021-06-22 | 北京工业大学 | Axial impact oscillation screw drill |
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