Rotary impact type drilling toolTechnical field
The present invention relates to oil-well drilling equipment, in particular to a kind of rotary impact type drilling tool.
Background technique
How to improve bit speed is the technical problem that current countries in the world are being studied, in particular, with the increasing of well depthAdd, waterpower is lost along journey to be increased, and shaft bottom drill bit can sharply be declined with water energy, and hydraulic drilling and clear rock reduced capability cause deep-wellThe problems such as drilling speed is low, bit wear is fast, viscous card is serious；In addition, in order to improve oil recovery efficiency, horizontal well, Multilateral Wells, big displacementWell is got more and more attention from formula well etc., and current wellbore is more and more irregular, and frictional resistance and torque are big, and slide drilling is difficult, wellboreExpanded range is small.
The core technology content for improving bit speed is how to improve the efficiency of breaking rock of drill bit, surrounds the technology contents, removesOther than research bit technique, water-jet breaking technique for rock and other drilling technologies, recent decades have also been proposed rotating drillingTechnology, and a large amount of technical research and field application have been carried out, principle is to connect (the rotation of a hydraulic impacter on drill bit topRush connector), in drilling process, drill bit is rushed with drill string rotating, while also by the high frequency from impactor under certain bit pressureHit stress, and the fractured rock under the synergy for rotating and impacting.
Rotary impact is a kind of broken rock mode for effectively improving efficiency of breaking rock and rate of penetration, rotary impact common at presentDrilling tool is broadly divided into hydrodynamic, pneumatic type and electrodynamic type etc., mouth of being used widely in Rock and Soil Drilling Engineering.
It discloses one kind in the patent of invention that notification number is CN104033113B to spin helicoid hydraulic motor, mud is by bypassEnter inside helicoid hydraulic motor inside valve chest, the machinery for rotating the hydraulic energy transfer of mud for rotor using motor portionCan, rotor rotation successively drives universal shaft and the rotation of upper axis body, due to being that spline connects between upper axis body and lower axis body, cam,Cam chair and lower axis body are sequentially connected, and lower axis body and cam can also be rotated with upper axis body, are cooperated due to cam and idler wheelStructure feature will push lower axis body in cam rotary course and pump, and generate the stable of certain frequency and sizeSoft impact force.Above-mentioned patent drives the axially reciprocating of lower axle body to generate axial vibration punching by the cooperation of cam and idler wheelRotating drilling mode is realized in the rotation hit in conjunction with lower axis body, since lower axis body also needs to generate axial reciprocal fortune in rotation processDynamic, so that the raising in bit speed and drilling efficiency is very limited, and drill bit rock breaking capacity is poor when encountering the hard objects such as rock.
Summary of the invention
The object of the present invention is to provide a kind of rotary impact type drilling tools, are mutually tied using helicoid hydraulic motor with speed enhancing apparatusIt closes, reaches rotating drilling mode, speed enhancing apparatus generates three-dimensional vibrating impact laterally and longitudinally, greatly using drilling fluid as powerWidth improves bit speed and drilling efficiency.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of rotary impact type drilling tool, including sequentially connected by-pass valve assembly, anti-lost assembly, motor assembly,Universal axle assembly and driving-shaft assembly, the driving-shaft assembly include the internal transmission shaft with hollow channel, the transmission shaftOne end be connected with percussion mechanism, the end of the percussion mechanism is connected with drill bit；The percussion mechanism includes setting up and downImpact of collision mechanism and side knock mechanism, the side knock mechanism include rotary impact hammer seat, are rotationally connected with rotation punchingRotary impact hammer in hammer seat and the first steering current divider in rotary impact hammer；The impact of collision mechanism includesImpact of collision hammers seat, the impact of collision portion in impact of collision hammer seat into shape and turns to the linkage portion that current divider drives by first,Crankmotion under the driving that the rotary impact hammer turns to current divider first, while the impact of collision portion is in linkage portionDriving under reciprocating longitudinal motion.
By using above-mentioned technical proposal, the mud pumped out flowed through by-pass valve assembly using slush pump, and to enter motor totalAt interior, certain pressure difference is formed in the import and export of motor assembly, pushes the rotor of motor to rotate, and torque and revolving speed are led toIt crosses universal shaft and transmission shaft is transmitted in percussion mechanism, drive percussion mechanism rotation, percussion mechanism rotates progress with drill bit togetherBroken rock；Percussion mechanism is converted into rotary impact hammer and impact of collision portion using drilling fluid as motive power, by the kinetic energy of drilling fluidHigh frequency and impact energy by a small margin, and the 3 D stereo as caused by rotary impact hammer and impact of collision mechanism is impactedIt avoids generating a glutinous sliding phenomenon in energy transmission to drill bit, while improving rate of penetration and drilling efficiency, drilling efficiency is same2-3 times of PDC drill bit is used alone in well, same layer.
Preferably, the impact of collision portion includes impact of collision hammer and the upper and lower ends set on impact of collision hammerUpper striker and lower striker are formed with the first driving chamber, the lower striker between the upper striker and impact of collision hammerThe second driving chamber is formed between impact of collision hammer；First low pressure liquid that is internally provided with of the first steering current divider leads toRoad, the highly pressurised liquid channel being connected to first low pressure liquid channel is provided in the linkage portion and the second low pressure liquid is logicalRoad, when one in first driving chamber and the second driving chamber is connected to second low pressure liquid channel, described firstAnother in driving chamber and second driving chamber is connected to the axial fortune of driving impact of collision hammer with the highly pressurised liquid channelIt is dynamic.
By using above-mentioned technical proposal, cleaner for high-pressure drilling fluid circulation is passed into the first driving chamber or the second driving chamber, is madeThe first driving chamber and the second driving chamber distinguish staggered is formationed high pressure chest and low pressure chamber, cause to push in the first driving chamber andLongitudinally reciprocating motion is hammered in impact of collision between second driving chamber into shape, and striker and lower striker generate longitudinal high frequency vibrating in shockIt is dynamic, it is significantly high in oscillation intensity, further increase the rock breaking capacity of drill bit.
Preferably, the linkage portion includes the intermediate tube in impact of collision hammer and the in intermediate tubeTwo turn to current divider, and the second steering current divider connect and rotates synchronously with the first steering current divider；It is opened on the intermediate tubeEquipped with the first inlet opening being connected to the first driving chamber and the second inlet opening being connected to the second driving chamber, first feed liquorHole is connected to the first driving chamber, and the second inlet opening is connected to the second driving chamber, is corresponded to and first on the second steering current dividerThe position of inlet opening and the second inlet opening is respectively arranged with the first inlet tube and the second inlet tube, wherein the first inlet opening and secondInlet opening is opened up in the circumferential misalignment of intermediate tube.
By using above-mentioned technical proposal, second turns to the drive rotation that current divider turns to current divider first, is set to theTwo turn to the first inlet tube on current dividers and the second inlet tube alternately with the first inlet opening being provided on intermediate tube and theThe connection of two inlet openings, and the first inlet opening, the second inlet opening are connected to the first driving chamber, the second driving chamber respectively, so that theEntering in the first driving chamber and the second driving chamber for cleaner for high-pressure drilling fluid circulation is realized in the rotation process of two steering current dividers, is madeIt obtains the first driving chamber and the second driving chamber generates a pressure difference, so that the carry out axial reciprocating that impact of collision hammer can be more smoothMovement.
Preferably, the second low pressure liquid is formed there are spacing between the second steering current divider and intermediate tubeBody channel, the highly pressurised liquid channel are formed in inside the second steering current divider, wherein turning to current divider close to first in secondThe one end for turning to current divider offers third inlet opening, and the third inlet opening is respectively communicated with the first low pressure liquid channel and secondLow pressure liquid channel.
By using above-mentioned technical proposal, the drilling fluid in the first low pressure liquid channel is entered using third inlet openingTo the second low pressure liquid channel, make the drilling fluid in the second low pressure liquid channel under the rotation of the second steering current dividerIt can enter in the first driving chamber or the second driving chamber and make in the first driving chamber or the one of cavity of the second driving chamberAs soon as forming a low pressure chamber, another is high pressure chest relatively, so that the first driving chamber and the second driving chamber form pressure difference, drivingImpact of collision hammer moves back and forth.
Preferably, it is provided with axle bed in the impact of collision hammer seat, described second turns between current divider and axle bedAnnular groove is formed, is provided with several steel balls in the annular groove.
By using above-mentioned technical proposal, the setting of steel ball drives second to turn to current divider so that turning to current divider firstRolling friction is converted into when rotation, the friction reduced between impact of collision hammer seat is impaired, improves service life.
Preferably, the side knock mechanism further includes the upper press cover being fixed in rotary impact hammer seat and pushingLid, the rotary impact hammer are set between upper press cover and lower cover, and one end of the first steering current divider is connected to lower coverOn, the other end is stretched out across upper press cover, and the outer wall and rotary impact hammer of the upper and lower gland, first turn between current dividerSteel ball is provided at mating surface.
By using above-mentioned technical proposal, the setting of upper lower cover will turn to jump bit and first first and turn to diverter shaftTo limit, and the setting of steel ball reduces frictional force in the rotary course of rotary impact hammer and the first steering current divider, improves rotationTurn the service life of jump bit and the first steering current divider.
Preferably, be also provided with two groups of symmetrical liquid inlet and outlet channels on the rotary impact hammer seat, every group into,Liquid outlet channel includes two feed pathways and the liquid outlet channel between two feed pathways, the upper press cover be provided with intoThe upper hole of liquid channel connection, lower cover are provided with the lower opening being connected to liquid outlet channel；Symmetrically it is arranged in the rotary impact hammerThere are two arc bump, the arc bump and impact block are distributed in right-angled intersection, and are offered in the two sides of arc bumpFirst leakage fluid dram, the two sides of the impact block offer the second leakage fluid dram, and described first turns on the outer wall of current divider symmetricallySetting is there are two chamber is divided, and the arc bump, which is placed in, to be divided intracavitary and abut against in the side wall of partial pressure chamber, each partial pressure chamberTwo sides are provided with sump pit, open up in the radial symmetric of the first steering current divider there are two liquid inlet channel, the liquid inlet channel and theOne turns to the inside connection of current divider, is symmetrical arranged on the lower cover there are two arc apocenosis passage, each arc drain is logicalIt recycles and is connected in the rotation process that road and sump pit turn to current divider first.
By using above-mentioned technical proposal, drilling fluid is entered from the feed pathway being opened on rotary impact hammer seat to be passed throughThe partial pressure that the upper hole of upper press cover enters the first steering current divider is intracavitary, pushes first to turn to current divider clockwise or counter-clockwiseRotation drives rotary impact hammer rotation to realize rotation when the partial pressure cavity wall of the first steering current divider is abutted against with arc bumpTurn the shock between jump bit and rotary impact hammer seat, after completing one-shot, first turn to current divider on liquid inlet channel withThe second leakage fluid dram on rotary impact hammer and be connected to impact chamber, drilling fluid enters impact block and abuts against with cavity wall is impactedPosition, push rotary impact hammer counter motion, realize reciprocating impact.
Preferably, the connecting pin of the transmission shaft offers the fixing groove being connected to hollow channel, the fixing grooveIt is inside provided with the protective case made of martensitic stain less steel, is offered on the inner wall of the protective case multiple with spiral-distributedOne mounting hole is provided with ball in first mounting hole, wherein the orifice diameter of the first mounting hole is less than the diameter of ballSo that ball part is placed in the outside of the first mounting hole, and is provided in the first mounting hole and to force ball always there is disengagingThe elastic component of one mounting hole movement tendency；The percussion mechanism includes the connector for being set to end, the side wall of the connectorThe upper position corresponding to the first mounting hole offers multiple second mounting holes, and connector is connected through a screw thread with protective case, and twoPerson's fixed rear portion ball outside installation cavity that is placed in is embedded in third mounting hole.
By using above-mentioned technical proposal, transmission shaft utilizes the connection of the protective case and percussion mechanism that are mounted in fixing grooveHead thread is connected and fixed, and protective case is made of martensitic stain less steel with high Wear-resistant corrosion-resistant performance, can be improved transmissionThe bonding strength of axis and connector junction more preferably transmits torque by transmission shaft；Secondly it is that connector cooperates in protective caseAfterwards, it can be embedded in the second mounting hole of connector, be played to transmission shaft with the ball that helical arrangement is arranged on protective case inner wallIt is limited with the circumferential direction of percussion mechanism, capable of offsetting a part, the borehole wall is to reactive torque caused by percussion mechanism in drilling well, into oneStep improves the transmission efficiency of torque transmission shaft.
Preferably, multiple accommodation grooves are offered on the inner wall of the protective case, heat are installed swollen in the accommodation grooveSwollen packet is equipped with paraffin in thermal expansion packet.
By using above-mentioned technical proposal, percussion mechanism is converted to when being driven rotation by transmission shaft by mechanical energyPartial heat energy force the thermal expansion packet expanded by heating in protective case to be fitted tightly on the outer wall of connector to improve transmission shaftBonding strength between connector；Secondly after paraffin expands to a certain extent, entire thermal expansion packet can be burst so that stone appliesWaterproof action is played in the junction for covering protective case and connector, reduces drilling fluid in the corrosion of junction, improves the use of deviceService life, and preferably transferred torque in percussion mechanism by transmission shaft.
Preferably, the accommodation groove is in on the helix of spiral-distributed multiple first mounting holes, and eachAccommodation groove is respectively positioned between adjacent two first mounting hole.
By using above-mentioned technical proposal, accommodation groove and the first mounting hole interval helical arrangement, so that on percussion mechanismPressure of the connector by the formula of gathering, and close ball using thermal expansion inclusion and play radial and circumferential dual limit to connectorAxial limiting is played in position, the threaded connection between connector and fixing groove, so that both transmission shaft and connector are consolidated with three-dimensionalDetermine mode to interconnect, transmission shaft can be transferred torque on percussion mechanism with highest transmission efficiency, improve revolving speed.
In conclusion the invention has the following advantages:
1, by cleaner for high-pressure drilling fluid driving work, side knock mechanism passes through rotation for side knock mechanism and impact of collision mechanismThe shock for turning jump bit generates the cross torsion impact force of certain frequency, and impact of collision mechanism is produced by the shock that impact of collision is hammered into shapeThe longitudinal impact force of raw certain frequency, the two combines so that entire percussion mechanism stroke one kind three in driving drill bit rotation processDimension acts impact effect, and percussion mechanism simultaneously drives rotation by transmission shaft, forms the mode of spinning of three-dimension type oscillatory type, assist drill bitBroken rock improves bit speed and efficiency；
2, percussion mechanism and the connection of transmission shaft using multiple balls combine thermal expansion wrap axial direction, circumferential direction and the two itBetween the axial limiting that is threadedly coupled, greatly improve transmission shaft to the torque transmission efficiency of percussion mechanism, so that the rotation of percussion mechanismRotary speed is higher, further increases and improves bit speed and efficiency.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of rotary impact type drilling tool each section in embodiment one；
Fig. 2 is the structural schematic diagram of transmission shaft and connector junction in embodiment one；
Fig. 3 is the structural schematic diagram of transmission shaft and connector junction after fixed in embodiment one；
Fig. 4 is the structural schematic diagram that packet is thermally expanded in embodiment one；
Fig. 5 is the cross-sectional view of drilling speed percussion mechanism entirety in embodiment one；
Fig. 6 is the structural schematic diagram of rotary impact hammer seat in embodiment one；
Fig. 7 is the structural schematic diagram of rotary impact hammer in embodiment one；
Fig. 8 is the first structural schematic diagram for turning to current divider in embodiment one；
Fig. 9 is rotary impact hammer seat in embodiment one, rotary impact hammer and showing after the first steering current divider three cooperationIt is intended to；
Figure 10 is that intermediate tube and second turns to state diagram of the current divider in the first cooperation position in embodiment one；
Figure 11 is that intermediate tube and second turns to state diagram of the current divider in the second cooperation position in embodiment one；
Figure 12 is in schematic diagram when the first operating position for side knock mechanism in embodiment one；
Figure 13 is in schematic diagram when the second operating position for side knock mechanism in embodiment one；
Figure 14 is in schematic diagram when third operating position for side knock mechanism in embodiment one；
Figure 15 is in schematic diagram when four operating positions for side knock mechanism in embodiment one；
Figure 16 is in schematic diagram when five operating positions for side knock mechanism in embodiment one.
In figure: 1a, by-pass valve assembly；2a, anti-lost assembly；3a, motor assembly；4a, universal axle assembly；5a, transmission shaft are totalAt；51a, transmission shaft；511a, hollow channel；51b, protective case；511b, the first mounting hole；512b, ball；513b, elastic component；514b, thermal expansion packet；1b, percussion mechanism；11b, connector；111b, the second mounting hole；1c, drill bit；1, drill-bit installing seat；2,Side knock mechanism；21, rotary impact hammer seat；211, feed pathway；212, liquid outlet channel；213, chamber is impacted；2131, slideway；22, rotary impact hammer；221, impact block；2211, the second leakage fluid dram；2212, punching groove；222, arc bump；2221, first rowLiquid mouth；23, first current divider is turned to；231, chamber is divided；232, sump pit；233, liquid inlet channel；234, the first low pressure liquid channel；24, upper press cover；25, lower cover；251, arc apocenosis passage；3, impact of collision mechanism；31, seat is hammered in impact of collision into shape；32, Zong XiangchongHit portion；321, upper striker；322, lower striker；323, impact of collision is hammered into shape；324, the first driving chamber；325, the second driving chamber；33, linkage portion；331, intermediate tube；3311, the first inlet opening；3312, the second inlet opening；332, second current divider is turned to；3321,First inlet tube；3322, the second inlet tube；3323, highly pressurised liquid channel；3324, the second low pressure liquid channel；3325, thirdInlet opening；4, nozzle；5, steel ball；6, axle bed.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one
Referring to Fig. 1, a kind of rotary impact type drilling tool, including passing sequentially through the by-pass valve assembly 1a of threaded connection, preventingFall assembly 2a, motor assembly 3a, universal axle assembly 4a and driving-shaft assembly 5a, above-mentioned structure is same as the prior art not to be doneIt is described in detail.Driving-shaft assembly 5a includes the transmission shaft 51a with hollow channel, and one end of transmission shaft 51a is connected by screw threadIt is connected to percussion mechanism 1b, the separate one end connecting with transmission shaft 51a percussion mechanism 1b is further through being threaded with drill bit 1c, the brillHead 1c is PDC drill bit.
Referring to fig. 2 with Fig. 3, one end of transmission shaft 51a offers fixing groove, and fixing groove is in truncated cone-shaped and and hollow channel511a connection, and towards one end of notch be big end.Protective case 51b, the foreign steamer profile of protective case 51b are installed in fixing grooveShape matches with the cell wall of fixing groove, and protective case 51b is made of martensitic stain less steel, and is connected by welding manner and fixing grooveIt connects.
Offer multiple first mounting hole 511b, each first mounting hole in a spiral manner on the inner wall of protective case 51bBall 512b is embedded in 511b, wherein the orifice diameter of the first mounting hole 511b is less than the diameter of ball 512b, so thatBall 512b after being fit into the first mounting hole 511b without departing from；Elastic component is also equipped in the first mounting hole 511b513b, elastic component 513b are compressed spring, and one end of elastic component 513b is connected to the hole bottom of the first mounting hole 511b, the other endIt is abutted with ball 512b, before installing ball 512b, the orifice diameter of the first mounting hole 511b is larger than the straight of ball 512bDiameter, and elastic component 513b is placed into the first mounting hole 511b first, then will be put into the first mounting hole 511b, mostShrinkage cavity processing is carried out to the aperture of the first mounting hole 511b afterwards, so that orifice diameter is reduced to the diameter less than ball 512b.
Multiple accommodation grooves are also provided on the inner wall of protective case 51b, multiple accommodation grooves are opened in spiral-distributed multipleOn the helix of one mounting hole 511b, thermal expansion packet 514b is installed in accommodation groove, reference can be made to Fig. 4, thermal expansion packet 514b'sInside is filled with paraffin, and paraffin props up entire backpack body.
The end of percussion mechanism 1b has the connector 11b cooperated with protective case 51b, and connector 11b is in truncated cone-shaped and protectsThe inner wall shape of sheath 51b matches, and the inner wall of protective case 51b is tapped with internal screw thread, and the outer wall of connector 11b is provided with outer spiral shellLine, both connector 11b and protective case 51b are connected through a screw thread fixation；Multiple second are offered on the outer wall of connector 11bMounting hole 111b, multiple second mounting hole 111b's equally opens up in a spiral manner, and pacifies with multiple first on protective case 51bIt is corresponding to fill the position hole 511b, after connector 11b is connect with protective case 51b, the first mounting hole 511b and the second mounting hole 111bAn installation cavity is formed, and ball 512b is made to be placed on the part rolling outside the first mounting hole 511b by the effect of elastic component 513bPearl 512b is embedded into the second mounting hole 111b.
Referring to Fig. 5, above-mentioned percussion mechanism, including drill-bit installing seat 1, side knock mechanism 2 and impact of collision mechanism3, drill-bit installing seat 1 is fixed on one end of side knock mechanism 2, and impact of collision mechanism 3 is fixed on side knock mechanism 2 far from brillOne end of head mounting base 1.
Side knock mechanism 2 include rotary impact hammer seat 21, the rotary impact hammer 22 in rotary impact hammer seat 21 withAnd first in rotary impact hammer 22 turns to current divider 23, is fixed with upper press cover by screw in rotary impact hammer seat 2124 are placed between upper press cover 24 and lower cover 25 with lower cover 25, rotary impact hammer 22, and pass through upper press cover 24 and lower cover 25The axial displacement of rotary limited jump bit 22, the first steering current divider 23 are provided with nozzle 4 close to one end of drill-bit installing seat 1,The other end stretches out upper press cover 24；At mating surface between rotary impact hammer 22 and upper and lower gland 24,25 and first turns to shuntingMultiple steel balls 5 are provided at the mating surface of device 23 and upper and lower gland 24,25, are turned to reducing rotary impact hammer 22 and firstFrictional force when current divider 23 rotates between upper and lower gland 24,25.
Referring to Fig. 6 to Fig. 8, rotary impact hammer seat 21, rotary impact hammer 22 and the first steering current divider are respectively illustrated23 structural schematic diagram, rotary impact hammer seat 21 are a cylinder, symmetrically open up that there are two fan-shaped impact chambers inside it213, two groups of symmetrically arranged liquid inlet and outlet channels 211,212, every group of liquid inlet and outlet are also provided between two impact chambers 213Channel 211,212 includes two feed pathways 211 and the liquid outlet channel 212 between two feed pathways 211.
The outer wall of rotary impact hammer 22 is arranged symmetrically, and there are two fan-shaped impact blocks 221, in the inner wall of rotary impact hammer 22Place is symmetrical arranged there are two arc bump 222, and two arc bumps 222 are just distributed with two impact blocks 221 in right-angled intersection,The two sides of every piece of arc bump 222 offer the first leakage fluid dram 2221, and offer the second drain in the two sides of impact block 221Mouth 2211, the first leakage fluid dram 2221 is connected to the inside of rotary impact hammer 22 with the second leakage fluid dram 2211.
The first low pressure liquid channel 234 that perforation is offered in the middle part of first steering current divider 23, is symmetrically opened in its outer wallIf there are two chamber 231 is divided, the two sides of each partial pressure chamber 231 offer sump pit 232；In the diameter that first turns to current divider 23It is opened up on direction there are two liquid inlet channel 233, which is connected to the first low pressure liquid channel 234 at middle part.
Referring to Fig. 9, after rotary impact hammer seat 21, rotary impact hammer 22 and first turn to 23 three of current divider cooperation, rotationTurn impact block 221 on jump bit 22 to be placed in the impact chamber 213 of rotary impact hammer seat 21, and the fan-shaped face paste of impact block 221Together in the side wall of impact chamber 213；Arc bump 222 is placed in the partial pressure chamber 231 of the first steering current divider 23 on rotary impact hammer 22Interior, the fan-shaped surface of same arc bump 222 fits in the side wall of partial pressure chamber 231；Secondly rotary impact hammer seat 21 after three's cooperationOn feed pathway 211 can on rotary impact hammer 22 the second leakage fluid dram 2211 and first turn to current divider 23 partial pressure chamber231 are mutually conducted, the impact chamber 213 on rotary impact hammer seat 21 can on rotary impact hammer 22 the first leakage fluid dram 2221 andLiquid inlet channel 233 on first steering current divider 23 is mutually conducted.
Fig. 5 is come back to, impact of collision mechanism 3 includes impact of collision hammer seat 31, indulging in impact of collision hammer seat 31To impact portion 32 and linkage portion 33, wherein the end of impact of collision hammer seat 31 is arranged in connector 11b, and seat 31 is hammered in impact of collision into shapeOne end and one end of rotary impact hammer seat 21 far from connector 11b are connected and fixed, impact of collision portion 32 include be fixed on it is verticalUpper striker 321 and lower striker 322 into jump bit seat 31 are provided with longitudinal direction between upper and lower striker 321,322Jump bit 323, forms the first driving chamber 324 between upper striker 321 and impact of collision hammer 323, lower striker 322 is rushed with longitudinalThe second driving chamber 325 is formed between hammer 323.
Second steering current divider 332 of the above-mentioned linkage portion 33 including intermediate tube 331 and in intermediate tube 331, inBetween pipe 331 both ends it is fixed with upper and lower striker 321,322 respectively, second turns to one end of current divider 332 and side knock machineThe first steering current divider 23 in structure 2 is connected and fixed, and the two, which is realized, to be rotated synchronously, and the first feed liquor is offered on intermediate tube 331Hole 3311 and the second inlet opening 3312, wherein the first inlet opening 3311 is connected to the first driving chamber 324, the second inlet opening 3312 withThe connection of second driving chamber 325, and the first inlet opening 3311 and the second inlet opening 3312 misplace arrangement in the circumferential；At second turnCorrespond at the position of the first inlet opening 3311 and the second inlet opening 3312 on current divider 332 and offers the first inlet tube respectively3321 and second inlet tube 3322, and the first inlet tube 3321 and the second inlet tube 3322 with the inner wall phase of intermediate tube 331Fitting.
Second turn to current divider 332 internal run-through formed highly pressurised liquid channel 3323, the highly pressurised liquid channel 3323 withFirst turns to the first low pressure liquid channel 234 connection of current divider 23, turns to current divider 332 second and turns to shunting close to firstOne end of device 23 is provided with throttling set (not shown), and high pressure liquid throttling is converted to low pressure liquid using the throttling set.
Furthermore the second low pressure liquid is formed there are spacing between the second steering current divider 332 and the inner wall of intermediate tube 331 to lead toRoad 3324 offers third inlet opening 3325 in one end close to the first steering current divider 23 of the second steering current divider 332, shouldThird inlet opening 3325 is respectively communicated with the first low pressure liquid channel 234 and the second low pressure liquid channel 3324.Simultaneously at second turnIt is additionally provided with an axle bed 6 close to one end of the first steering current divider 23 to current divider 332, which is fixed on impact of collision hammerIn seat 31, annular groove is formed between the second steering current divider 332 and axle bed 6, in being provided with multiple steel balls 5 in annular groove, in this wayReduce the frictional force when rotation of the second steering current divider 332.
The course of work of the rotary impact type drilling tool are as follows: slush pump squeezes into drilling fluid from by-pass valve assembly 1a, whenReach the drilling fluid when valve body after certain pressure in by-pass valve assembly 1a moves downward and enters motor by bleeding off assembly 2aIn assembly 3a, rotor is driven to do planetary motion in stator, which is changed into biography by universal axle assembly 4a by rotorThe dead axle of moving axis 51a moves, and transmission shaft 51a finally drives percussion mechanism 1b and drill bit 1c to rotate broken rock.
Fig. 5 and Figure 10, Figure 11 are specifically combined, partial high pressure drilling fluid enters the height in the second steering current divider 332In press liquid channel 3323, become low pressure liquid by the throttling partial pressure of throttling set, and turn on current divider 332 by secondThird inlet opening 3325 enter in the second low pressure liquid channel 3324.Second, which turns to current divider 332, turns to shunting firstIt is rotated under the drive of device 23, so that the cooperation for turning to current divider 332 and intermediate tube 331 by second recycles conducting, makes the first driveOne in dynamic chamber 324 and the second driving chamber 325 when being connected to the second low pressure liquid channel 3324, the first driving chamber 324 and theAnother in two driving chambers 325 is connected to highly pressurised liquid channel 3323.
When the second steering current divider 332 turns an angle, the second inlet opening 3312 is connected to the second inlet tube 3322,To make highly pressurised liquid channel 3323 be connected to the second driving chamber 325, cleaner for high-pressure drilling fluid passes through highly pressurised liquid channel 3323, secondInlet opening 3312 and the second inlet tube 3322 enter in the second driving chamber 325.At this point, being high pressure liquid in the second driving chamber 325Body is low pressure liquid in the first driving chamber 324, therefore, impact of collision hammer 323 can be pushed to one far from drill bit connector 1Side movement.
When the second steering current divider 332 is rotated further by certain angle, the first inlet opening 3311 and the first inlet tube 3321 connectLogical, so that highly pressurised liquid channel 3323 be made to be connected to the first driving chamber 324, highly pressurised liquid passes through highly pressurised liquid channel 3323, theOne inlet opening 3311 and the first inlet tube 3321 enter in the first driving chamber 324.At this point, being high pressure in the first driving chamber 324Liquid is low pressure liquid in the second driving chamber 325, therefore, can be hammered into shape 323 with impact of collision to the side close to drill bit connector 1Movement.It and so on acts, generates the longitudinal impact force of certain frequency.
In conjunction with Fig. 5 and Figure 12 to Figure 15, a part of drilling fluid can be gone out by through-hole overflow on the first steering current divider 23Enter in the feed pathway 211 that the upper hole from upper press cover 24 enters rotary impact hammer seat 21, the setting of arc bump 222 two sidesThe first leakage fluid dram 2221 be respectively communicated with feed pathway 211 and liquid outlet channel 212, cleaner for high-pressure drilling fluid enters in partial pressure chamber 231And the first steering current divider 23 is pushed to rotate clockwise.
Referring specifically to Figure 13, when the arc bump 222 of rotary impact hammer 22 encounters the inner wall of partial pressure chamber 231, first turnThe second leakage fluid dram 2211 on the liquid inlet channel 233 and rotary impact hammer 22 of current divider 23 is corresponding, impacts chamber 213 and liquid inlet channel233 connections, the other half of impact chamber 213 are connected to sump pit 232, arc apocenosis passage 251, and drilling fluid can be turned to through first to be dividedFirst low pressure liquid channel 234 of stream device 23, liquid inlet channel 233, the second leakage fluid dram 2211 enter in impact chamber 213, make to rotateJump bit 22 rotates counterclockwise under the promotion of drilling fluid, and the first steering current divider 23 is driven to rotate counterclockwise.
Referring to Figure 14, when stopping operating after the inner wall that the impact block 221 of rotary impact hammer 22 encounters impact chamber 213, intoLiquid channel 211 is connected to feed liquor with partial pressure chamber 231 by the first leakage fluid dram 2221, and divides another part and liquid out of chamber 231Channel 212 is connected to drain, and the first steering current divider 23 rotates counterclockwise.
Referring to Figure 15, when the arc bump 222 of rotary impact hammer 22 encounters partial pressure 231 inner wall of chamber, first turns to shuntingThe second leakage fluid dram 2211 on the liquid inlet channel 233 and rotary impact hammer 22 of device 23 is corresponding, impacts chamber 213 and liquid inlet channel at this timeAnother part of 233 connections, impact chamber 213 is connected to drain with sump pit 232, arc apocenosis passage 251, pushes rotary impact hammer22 rotate clockwise, and the first steering current divider 23 is driven to rotate clockwise.
Referring finally to Figure 16, stop operating after the inner wall of the 221 impact chamber 213 of impact block of rotary impact hammer 22.
It and so on acts, generates the lateral impact forces of certain frequency.
Application Example
Using the field test situation analysis of this rotary impact type drilling tool, test period on April 1st, 2016.
Table 1: test interval table
| Layer position | Push up deep (rice) | Bottom is deep (rice) |
| Group one | 210 | 485 |
| Group two | 485 | 685 |
| Group three | 685 | 966 |
| Group four | 966 | 1236 |
Table 2: the drilling speed contrast table of different drilling tools
It is learnt by table 2, significantly improves bit speed using the drilling tool in embodiment one, compared to existing drilling tool speedDegree about promotes 60% or so.By generating the cross torsion impact force and axial impact force of certain frequency to drill bit, one is formedThe effect of kind three-dimensional motion impact, and the bonding strength between transmission shaft 51a and percussion mechanism 1b is improved, so as to auxiliary drillHead broken rock, improves drill bit rock breaking capacity, improves in, the bit speed and drilling efficiency of hard formation, while being able to solve PDC brillViscous, sliding, the bit freezing problem of head slow down the torsion shake of down-hole equipment, extend drilling life of bit, by right in practical work processThe test of above-mentioned drilling well percussion mechanism is it is found that be same well, same layer exclusive use PDC using the drilling efficiency of the drilling well percussion mechanism2-3 times of drill bit, drilling efficiency is obviously improved.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the artMember can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at thisAll by the protection of Patent Law in the scope of the claims of invention.