CN107246240A - Adaptive torque balances differential pressure type drill bit - Google Patents
Adaptive torque balances differential pressure type drill bit Download PDFInfo
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- CN107246240A CN107246240A CN201710664821.9A CN201710664821A CN107246240A CN 107246240 A CN107246240 A CN 107246240A CN 201710664821 A CN201710664821 A CN 201710664821A CN 107246240 A CN107246240 A CN 107246240A
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- 230000003044 adaptive effect Effects 0.000 title claims abstract description 74
- 238000005553 drilling Methods 0.000 claims abstract description 82
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- 239000011435 rock Substances 0.000 claims abstract description 24
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 20
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 38
- 230000008569 process Effects 0.000 abstract description 35
- 230000035515 penetration Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 10
- 230000008859 change Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000000541 pulsatile effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B12/00—Accessories for drilling tools
- E21B12/04—Drill bit protectors
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
Differential pressure type drill bit, including re-drill bit and the crossover sub, pilot bit and the torque transmission device that link into an integrated entity are balanced the present invention relates to a kind of adaptive torque, re-drill bit is located between adapter coupling and pilot bit, is installed on the outside of torque transmission device；Torque transmission device includes being sequentially connected the first driving member being integrated, tumbler and the second driving member, first driving member is connected with crossover sub, second driving member is connected with pilot bit, tumbler is provided with least one retainer, also include the locating part coordinated with retainer, locating part is located at re-drill bit bizet；The first elastic component fluctuated for transmitting portions re-drill bit broken rock moment of torsion, damping torque used cooperatively with retainer is provided between retainer and re-drill bit bizet.The present invention can be in Self Adaptive Control drilling process torque-on-bit fluctuation, slow down or even avoid the torsional pulse vibration that stick-slip phenomenon is produced in drilling process, reach protection drill bit with BHA, improve the purpose of rate of penetration.
Description
Technical field
The invention belongs to petroleum works technical field, it is related to drilling tool, specifically, is related to a kind of adaptive torque and puts down
Weigh differential pressure type drill bit.
Background technology
Situ of drilling well practice have shown that, downhole formation stress can be discharged in advance by the structure for changing shaft bottom in drilling process
And effectively improve the efficiency of breaking rock of drill bit.Based on above-mentioned principle, external NOV companies have developed concentric twin-stage Speed Drill
Bits, country's triumph drilling well institute Peng Ye etc. have developed two-stage PDC bit.
Publication No. CN105443041A Chinese invention patent application discloses a kind of differential pressure type drill bit, specifically discloses
Following characteristics：Differential pressure type drill bit includes crossover sub, passes liquid power transmission short circuit, re-drill bit, power spring, pilot bit；Conversion
Joint, biography liquid power transmission short circuit are threadedly coupled integrally with pilot bit；Re-drill bit is located between crossover sub and pilot bit,
It is installed on the outside of biography liquid power transmission short circuit；The entirety that re-drill bit is constituted with crossover sub, biography liquid power transmission short circuit, pilot bit can be real
It is existing moving axially relative；Power spring is installed in the middle part of biography liquid power transmission short circuit, and power spring is used to realize re-drill bit and conversion
The deposit of elastic force and the recovery of relative position between the entirety that joint, biography liquid power transmission short circuit, pilot bit are constituted.The principle of the invention
And it is simple in construction, it is applied widely, small the pressure of the drill fast drilling can be ensured during for deviation control with drilling straight well, easy deviation strata straight well is improved and bore
Enter efficiency；It is identical with conventional drilling in drilling process, be conducive to promoting and use.
Publication No. CN105317377A Chinese invention patent application discloses a kind of center differential pressure type drill bit, specific public
Following characteristics are opened：Center differential pressure type drill bit includes re-drill bit, pressure regulating spring, shunting power transmission assembly, pilot bit；Neck
Eye drill bit links into an integrated entity with shunting power transmission assembly, is installed in the axial torsion pass hole of re-drill bit, pilot bit protrudes from expansion
Eye drill bit；Pressure regulating spring is between shunting power transmission assembly top and re-drill bit joint lower end；Re-drill bit can
To set one-level or multistage.The principle of the invention and simple in construction, it is applied widely, various stratum are can be applied to, it uses effect
Really in many interlayer stratum more preferably；It can be used together with pulsing jet generating means, further improve bit speed；Drilling well
Cheng Zhong, operation construction is identical with conventional drilling, does not have particular/special requirement to ground installation, well drilling pipe column, bite type, favorably
In drill bit popularization and use.
Publication No. 106703701A Chinese invention patent application discloses a kind of pulsatile impact generation mechanism and contained
The center differential pressure drill bit of the generation mechanism, pulsatile impact generation mechanism includes the righting element being sequentially placed, driving element, rotation
Element and restricting element, righting element, driving element and rotating element are sequentially connected, and restricting element is matched somebody with somebody with rotating element gap
Close, the flow channels circulated for drilling fluid are equipped with righting element and restricting element, driving element driving rotating element turns
It is dynamic, rotating element and the flow channels relative motion on restricting element.Center differential pressure drill bit includes re-drill bit, pulsatile impact and produced
Life structure, pressure regulatory element, transmission mechanism and pilot bit, pressure regulatory element, transmission mechanism, pilot bit connect successively
Connect.The patent application can realize pilot bit spin drilling while, reduce the pressure holding of pilot bit and re-drill bit landwaste
Effect, and then reach protection drill bit, improve the purpose of bit life and bit speed, drilling well effect is further improved.
Above-mentioned existing drill bit is indoors or scene achieves significantly drilling speed effect.Due to PDC drill bit (English
Text：Polycrystalline Diamond Compact bit) there is extremely strong selectivity to stratum, when bore meet hard formation or
During many interlayer stratum of person, stick-slip phenomenon and its caused impact failure will cause relatively low rate of penetration, single footage per bit
Reduce and greatly extend well construction period.Although above-mentioned existing drill bit, which can be installed additional, eats deep control unit, due to can not actively control
System bores depth of tooth penetration when meeting bad ground, the possibility for still having potential generation stick-slip phenomenon, so that brill when causing drilling
Head torque ripple is more strong, causes the fatigue damage of drill bit or BHA, also fails to the drilling of such drill bit
Efficiency is carried to optimal.Therefore, needing one kind badly can utilize stress releasing principle raising rate of penetration again can be certainly in bad ground
The drill bit of the side knock moment of torsion produced in dynamic balancing drilling process due to stick-slip phenomenon, to meet Different Strata, different well type
The need for well drilling speed.
The content of the invention
It is an object of the invention to there is provided a kind of adaptive torque balanced differences in view of the foregoing defects the prior art has
Pressure type drill bit, the drill bit realizes the adaptive equalization of moment of torsion in drilling process, slows down or even avoids stick-slip phenomenon in drilling process
The torsional pulse vibration of generation, reaches automatic absorption and the invalid vibration in release drilling process, and then protect drill bit and bottom
The purpose of BHA；Simultaneously because the size of pilot bit and re-drill bit has differences, it is possible to achieve well in drilling process
The change of bottom structure accelerates rate of penetration to discharge reservoir stress in advance.
In order to achieve the above object, differential pressure type drill bit is balanced the invention provides a kind of adaptive torque, including conversion connects
Head, re-drill bit and pilot bit, in addition to for transmitting the torque transmission device of moment of torsion, the adapter coupling, the moment of torsion
Transmission device links into an integrated entity with the pilot bit, the re-drill bit be located at the adapter coupling and the pilot bit it
Between, it is installed on the outside of the torque transmission device；The torque transmission device include be sequentially connected be integrated the first driving member,
Tumbler and the second driving member, first driving member are connected with the crossover sub, second driving member and the neck eye
Drill bit is connected, and the tumbler is provided with least one retainer, and the torque transmission device also includes matching somebody with somebody with the retainer
The locating part of conjunction, the locating part is located at re-drill bit bizet；Between retainer and the re-drill bit bizet be provided with it is described
What retainer was used cooperatively is used for the first elastic component that transmitting portions re-drill bit broken rock moment of torsion, damping torque are fluctuated.
Further, the re-drill bit bizet inwall is provided with the elastic component for being used to place first elastic component and placed
Chamber.
It is preferred that, the re-drill bit is any one in PDC drill bit, rock bit, diamond bit, the neck eye
Drill bit is any one in PDC drill bit, rock bit, diamond bit, and the re-drill bit and the pilot bit are any
Collocation forms different types of combination type drill bit.
Further, being provided with the tumbler is used for the main tap hole that drilling fluid circulates, first driving member and the
It is equipped with two driving members on the circulation passage that drilling fluid circulates that is used for connected with the main tap hole, second driving member
Provided with multiple tap holes.
Further, the first thrust bearing, described turn are provided between the tumbler and the re-drill bit positioning joint
Moving part is provided with the thrust bearing supporting surface coordinated with first thrust bearing.
Further, the second thrust bearing, the tumbler are provided between the tumbler and the re-drill bit bizet
It is provided with the thrust bearing confined planes coordinated with second thrust bearing；The re-drill bit bizet, which is provided with, to be used to support second
The bearing block of thrust bearing.
It is preferred that, the bearing block, second driving member and re-drill bit bizet three installation cooperatively form whole
Flow chamber, the rectifying cavity respectively with described tap hole and re-drill bit flow passage.
Further, in addition to for transmitting the pressure of the drill used in re-drill bit broken rock, distributing the re-drill bit bored with neck eye
Second elastic component of the shared the pressure of the drill ratio of head, second elastic component be positioned over the re-drill bit bizet, the tumbler with
Second driving member is installed in the space formed after cooperation.
Further, the tumbler is provided with the elastic component confined planes coordinated with the second elastic component, the re-drill bit
Bizet is provided with the elastic component mounting seat for being used for placing second elastic component, the elastic component mounting seat, second driving member
Installed with the re-drill bit bizet three and cooperatively form rectifying cavity, the rectifying cavity respectively with described tap hole and reaming hole
Drill bit flow passage.
It is preferred that, first driving member is provided with first seal, and it is close to be sequentially provided with second on second driving member
Sealing and the 3rd seal；Described time tap hole is located between the second seal and the 3rd seal.
Compared with prior art, the beneficial effects of the present invention are：
(1) adaptive torque balance differential pressure type drill bit internal of the present invention has used torque transmission device and the first elastic component,
Torque transmission device is used for the broken rock moment of torsion for transmitting re-drill bit and pilot bit, and the first elastic component can absorb re-drill bit rotation
Turn the unnecessary invalid vibration produced in drilling process, slow down significantly or even avoid the torsion punching that stick-slip phenomenon is produced in drilling process
Vibration is hit, the purpose for protecting drill bit and its BHA from impact failure is reached, extends the life-span of drilling well downhole tool,
Faster more continuous bit speed is produced, unnecessary nonproductive time is reduced.
(2) adaptive torque balance differential pressure type drill bit internal of the present invention is additionally provided with the second elastic component, can transmit top brill
Tool combination applied the pressure of the drill and re-drill bit, and the depth of tooth penetration of active control re-drill bit in the earth formation, distribute reamer
The pressure of the drill between head and pilot bit, can both adjust pilot bit and the distribution of re-drill bit the pressure of the drill to optimal, by drilling speed
Degree control is to most reasonable, moreover it is possible to slow down it is potential due to drill bit wedging stratum it is too deep caused by stick-slip effect.
(3) adaptive torque of the present invention balances differential pressure type drill bit principle and simple in construction, it is not necessary to install other instruments, no
Influence the implementation of other drilling well processes；It is applied widely, available for the various well type such as straight well, directional well, and can directly it connect
Drill collar is connect, other downhole tools can also be used cooperatively with power drilling tool or pulsing jet generating means etc..
(4) adaptive torque balance differential pressure type drill bit of the present invention uses re-drill bit and pilot bit two-layer configuration, may be used also
To constitute the contact area that drill bit and shaft bottom are added in multistage drill bit, drilling process so that the direction to control stability of drill bit
More preferably, it is highly suitable for directional drilling；Multilevel hierarchy make it that the borehole wall is more regular, improves well matter in drilling process simultaneously
Amount.
(5) adaptive torque balance differential pressure type drill bit of the present invention uses the form that re-drill bit is combined with pilot bit, real
The change of shaft bottom structure, changes bottom-hole stress field, reservoir stress is discharged in advance, improve rate of penetration in existing drilling process.
(6) adaptive torque of the present invention balances differential pressure type drill bit in drilling process, and it operates construction complete with conventional drilling
It is exactly the same, to ground installation, well drilling pipe column, bite type all without particular/special requirement, be conducive to the popularization of drill bit and use.
Brief description of the drawings
Fig. 1 is the structural representation that one embodiment of the invention adaptive torque balances differential pressure type drill bit.
Fig. 2 is the A-A profiles that adaptive torque shown in Fig. 1 of the present invention balances differential pressure type drill bit.
Fig. 3 is the B-B profiles that adaptive torque shown in Fig. 1 of the present invention balances differential pressure type drill bit.
Fig. 4 is the torque transmission device structural representation that adaptive torque shown in Fig. 1 of the present invention balances differential pressure type drill bit.
Fig. 5 is the re-drill bit structural representation that adaptive torque shown in Fig. 1 of the present invention balances differential pressure type drill bit.
Fig. 6 another embodiment of the present invention adaptive torques balance the structural representation of differential pressure type drill bit.
Fig. 7 is the torque transmission device structural representation that adaptive torque shown in Fig. 6 of the present invention balances differential pressure type drill bit.
Fig. 8 is the re-drill bit structural representation that adaptive torque shown in Fig. 6 of the present invention balances differential pressure type drill bit.
1st, torque transmission device, the 101, first driving member, 102, tumbler, the 103, second driving member, 104, retainer,
105th, locating part, 106, main tap hole, 107, secondary tap hole, 108, thrust bearing supporting surface, 109, thrust bearing confined planes,
110th, rectifying cavity, 111, first seal, 112, second seal, the 113, the 3rd seal, 114, male external connection screw, 115,
Female is inscribed screw thread, 116, elastic component confined planes, 2, crossover sub, 201, crossover sub external screw thread, 202, the upper button face of cylinder, 3,
Re-drill bit, 301, re-drill bit positioning joint, 302, re-drill bit bizet, 303, elastic component placed cavity, 304, bearing block,
305th, re-drill bit runner, 306, re-drill bit nozzle, 307, re-drill bit wing, 308, re-drill bit cutting tooth, 309, bullet
Property part mounting seat, 4, pilot bit, 401, pilot bit joint, 402, pilot bit bizet, 403, pilot bit wing, 404,
Pilot bit cutting tooth, 405, pilot bit nozzle, the 501, first thrust bearing, the 502, second thrust bearing, the 6, first elasticity
Part, the 7, second elastic component.
Embodiment
Below, the present invention is specifically described by exemplary embodiment.It should be appreciated, however, that not entering one
In the case of step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiment
In.
In the description of the invention, it is necessary to which explanation, the length direction of adaptive torque balance differential pressure type drill bit is peace
It is vertical after dress；Term " interior ", " outer ", " on ", " in ", " under " etc. instruction orientation or position relationship be based on shown in the drawings
Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, art
Language " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
Embodiment one：Referring to Fig. 1, Fig. 2, Fig. 4 differential pressure type drill bit, including conversion are balanced there is provided a kind of adaptive torque
Joint 2, re-drill bit 3 and pilot bit 4, in addition to for transmitting the torque transmission device 1 of moment of torsion, the adapter coupling 2, institute
Torque transmission device 1 is stated to link into an integrated entity with the pilot bit 4, the re-drill bit 3 be located at the adapter coupling 2 with it is described
Between pilot bit 4, the outside of torque transmission device 1 is installed on；The torque transmission device 1 includes being sequentially connected being integrated
The first driving member 101, the driving member 103 of tumbler 102 and second, first driving member 101 connects with the crossover sub 2
Connect, second driving member 103 is connected with the pilot bit 4, the tumbler 102 is provided with least one retainer 104,
The torque transmission device 1 also includes the locating part 105 coordinated with the retainer 104, and the locating part 105 is located at reamer
Crown 302；It is provided with and being used for that the retainer 104 is used cooperatively between the retainer 104 and re-drill bit bizet 302
Transmitting portions re-drill bit broken rock moment of torsion, the first elastic component 6 of damping torque fluctuation.Crossover sub is connect on torque transmission device 1
2nd, pilot bit 4 is connect under, re-drill bit 3 is installed at middle part, it acts on the pressure of the drill for being initially used for transmitting top drilling tool with moment of torsion to neck
Eye drill bit 4, secondly passes to re-drill bit 3 by moment of torsion by retainer 104, and with the phase of 3 and first elastic component of re-drill bit 6
The Self Adaptive Control of moment of torsion in drilling process is realized in interaction, is reached reduction broken rock torque ripple and is slowed down or even avoid stick-slip from imitating
The pressure of the drill, is total to by the purpose answered by the thrust bearing 502 of thrust bearing confined planes 109 and second on torque transmission device 1 again
It is same to pass to re-drill bit.Re-drill bit 3 is relative to the entirety that torque transmission device 1, crossover sub 2 and pilot bit 4 are constituted
There can be the crankmotion in the axial direction of certain angle.
Adaptive torque described in the above embodiment of the present invention balances differential pressure type drill bit, using torque transmission device 1 and first
Elastic component 6 realizes the adaptive equalization of moment of torsion in the drilling process of re-drill bit 3, slows down or even avoids stick-slip phenomenon in drilling process
The torsional pulse vibration of generation, reaches the invalid vibration absorbed in drilling process and then protects drill bit and BHA
Purpose；And realize the change of shaft bottom structure in drilling process to release in advance by the size difference of pilot bit 4 and re-drill bit 3
Reservoir stress is put, accelerates rate of penetration.
Referring to Fig. 2, the decision design of differential pressure type drill bit, the re-drill bit are balanced as above-described embodiment adaptive torque
The inwall of bizet 302 is provided with the elastic component placed cavity 303 for being used for placing first elastic component 6.Elastic component placed cavity 303 is used for
Limit the position of the first elastic component 6.Preferably, first elastic component 6 be mechanical spring or liquid spring, as
For scheme, the element that can also be acted on for the part of other flexible functions or with hydraulic damping.
The decision design of differential pressure type drill bit is balanced as above-described embodiment adaptive torque, the re-drill bit bores for PDC
Any one in head, rock bit, diamond bit, the pilot bit is PDC drill bit, rock bit, diamond bit
In any one, the arbitrarily collocation of the re-drill bit and the pilot bit forms different types of combination type drill bit.For example：
Neck eye PDC drill bit combines with reaming hole PDC drill bit, leads eye PDC drill bit to be combined with reaming hole rock bit, leads eye rock bit and reaming hole
PDC drill bit, neck eye rock bit and reaming hole rotary drill are first-class, can form 9 kinds of different combinations altogether.
With continued reference to Fig. 4, being provided with the tumbler 102 is used for the main tap hole 106 that drilling fluid circulates, and described first passes
The circulation for being used for drilling fluid circulation connected with the main tap hole 106 is equipped with the driving member 103 of moving part 101 and second to lead to
Road, second driving member 103 is provided with multiple tap holes 107.Into the drilling fluid of the circulation passage of the first driving member 101
Main tap hole through twisting in tumbler 102 enters in the circulation passage of the second driving member 103, and then a part is through time tap hole
107 enter in re-drill bit bizet 302, and circulation passage of the another part directly through the second driving member 103 enters pilot bit 4
It is interior.
Differential pressure type drill bit decision design is balanced to above-described embodiment adaptive torque, when the retainer is multiple, uniformly
In the outer surface of the tumbler 102, the difference that the quantity of retainer 104 meets formation properties according to drill bit be set to two or
It is multiple.Preferably, with continued reference to Fig. 4, the retainer 104 is provided with two, is arc structure projection；The locating part
105 shape and the shape of the retainer 104 are complementary, are arc structure cavity, the retainer 104 is positioned over locating part
In 105, both cooperatings can carry out the reciprocating rotary of certain angle.With continued reference to Fig. 4, the elastic component placed cavity 303
Located at the inside of locating part 104, be shaped as and the identical arc structure of locating part 105 of the elastic component placed cavity 303,
And the radian of the elastic component placed cavity 303 is more than the radian of the locating part 105, the retainer 104 is described in
Elastic component placed cavity 303 is used cooperatively with the locating part 105, for transmitting the moment of torsion in drilling process, first elasticity
Part 6 is positioned over the both sides of the retainer 104, is used cooperatively with the retainer 104, invalid in drilling process for absorbing
Torsional pulse vibrates.
With continued reference to Fig. 1, Fig. 4, above-described embodiment adaptive torque balance differential pressure type drill bit is further designed, described turn
Between moving part 102 and the re-drill bit positioning joint 301 be provided with the first thrust bearing 501, the tumbler 102 be provided with
The thrust bearing supporting surface 108 that first thrust bearing 501 coordinates.First thrust bearing 501 is arranged at thrust bearing supporting surface 108
On, for it is upper carry described in the embodiment of the present invention adaptive torque and balance differential pressure type drill bit when, bear the weight of re-drill bit 4,
Reduce the internal friction resistance when drilling process of re-drill bit 4 rotates relative to the torque transmission device 1 simultaneously.
With continued reference to Fig. 1, Fig. 4, above-described embodiment adaptive torque balance differential pressure type drill bit is further designed, described turn
The second thrust bearing 502 is provided between moving part 102 and the re-drill bit bizet 302, the tumbler 102 is provided with and second
The thrust bearing confined planes 109 that thrust bearing 502 coordinates.Second thrust bearing 502 be arranged at thrust bearing confined planes 109 it
Under, bored for applying in adaptive torque balance differential pressure type drill bit drilling process described in the embodiment of the present invention to re-drill bit 3
Pressure, while reducing the internal friction resistance when drilling process of re-drill bit 3 rotates relative to the torque transmission device 1.Thrust
Bearing confined planes 109 for the driving member 103 of tumbler 102 and second and transition plane, for limiting the second thrust bearing 502
Axial movement.
With continued reference to Fig. 1, Fig. 4, above-described embodiment adaptive torque balance differential pressure type drill bit is further designed, it is described to expand
Eye drill bit 302 is provided with the bearing block 304 for being used for supporting second thrust bearing 502, and the bearing block 304 stops with described
Thrust bearing confined planes 109 coordinate fixed second thrust bearing 502, the axial direction for limiting second thrust bearing 502
Activity.
With continued reference to Fig. 1, differential pressure type drill bit decision design, the bearing block are balanced to above-described embodiment adaptive torque
304th, second driving member 103 and the three of re-drill bit bizet 302, which install, cooperatively forms rectifying cavity 110, the rectification
Chamber 110 is connected with described tap hole 107 and re-drill bit runner 305 respectively.Rectifying cavity 110 will be from secondary tap hole 107
The drilling fluid of excessively stream carries out blending integration, and is transported in re-drill bit runner 305.Preferably, the rectifying cavity 110
Position the annular shape cooperatively formed is installed by bearing block 304, second driving member 103 and the three of re-drill bit bizet 302
Chamber.
With continued reference to Fig. 1, Fig. 4, above-described embodiment adaptive torque balance differential pressure type drill bit is further designed, described the
One driving member 101 is provided with first seal 111, second driving member 103 and is sequentially provided with second seal 112 and the 3rd
Seal 113, seal described above is dynamic sealing.The drilling fluid that first seal 111 is used to obstruct in drill string annulus enters
Enter in re-drill bit 3.Second seal 112 and the cooperating of bearing block 304, for the drilling well for preventing from flowing into rectifying cavity 110
Both installation formed locating parts 105 and elastic component placed cavity that liquid is passed back on re-drill bit 3 and torque transmission device 1
In 303；First seal 111 and second seal 112 between the two sealedly cavity, can use lubricating oil or other
Fluent material is filled.3rd seal 113 and the cooperating of diffusion drill bit 302, for obstruct outside bore hole annulus with it is whole
The drilling well liquid phase blending in chamber 110 is flowed, the inner sealing of drill bit is realized.
With continued reference to Fig. 4, differential pressure type drill bit decision design, described tap hole are balanced to above-described embodiment adaptive torque
107 are located between the second seal 112 and the 3rd seal 113, for by the part drilling fluid of main tap hole 106
It is diverted to re-drill bit 3.
With continued reference to Fig. 1, Fig. 4, differential pressure type drill bit decision design, described first are balanced to above-described embodiment adaptive torque
Driving member 101 is cylindrical hollow axle, and the upper outside of first driving member 101 is provided with male external connection screw 114, described the
One driving member 1 is connected by male external connection screw 114 with the crossover sub 2, for transmit the pressure of the drill of BHA with
Moment of torsion.The top of second driving member 103 is connected as one with tumbler 102, and screw thread 115 and institute is inscribed by female in bottom
State pilot bit 4 to connect, and the pressure of the drill and moment of torsion in drilling process are provided for pilot bit 4.
With continued reference to Fig. 1, differential pressure type drill bit decision design is balanced to the above embodiment of the present invention adaptive torque, conversion connects
First 2 outer upper is the crossover sub external screw thread 201 for connecting top drilling tool, applies moment of torsion when bottom is for upper button
The upper button face of cylinder 202；The inside upper part of crossover sub 2 is drilling fluid flow channels for drilling fluid excessively stream, bottom be for
Connect the junction button of the first driving member 101.
With continued reference to Fig. 1 and Fig. 3, Fig. 5, differential pressure type drill bit is balanced to the above embodiment of the present invention adaptive torque preferred
Design, re-drill bit 3 includes the re-drill bit positioning joint 301 on top and the re-drill bit bizet 302 of bottom.Re-drill bit is limited
The outside of position joint 301 is the diameter face of cylinder equal with the upper diameter of the button face of cylinder 202 of crossover sub；Re-drill bit is spacing to be connect
First 301 inside upper part shape is identical with the outer diameter face of the first driving member 101, and middle and lower part is the thrust shaft of the first thrust bearing 501
Confined planes (not shown) is held, for fixing the first thrust bearing 501 and preventing the first thrust bearing 501 from doing the fortune on axial direction
Dynamic, lower end is the tumbler righting face (not shown) that shape is engaged with tumbler 102, and bottom is affixed joint face, is
The affixed offer interface of re-drill bit positioning joint 301 and re-drill bit bizet 302.The top of re-drill bit bizet 302 is reaming hole
The re-drill bit bizet joint face (not shown) that drill bit 302 is connected with re-drill bit positioning joint 301, re-drill bit
It is preced with below bizet joint face for drill bit；Re-drill bit bizet joint face and the affixed connection of the bottom of re-drill bit positioning joint 301
Face shape is complementary, realizes the connection of re-drill bit bizet 302 and re-drill bit positioning joint 301.The inner side of re-drill bit bizet 302
The shape on top coordinates with the mutual gap of the main part shape of tumbler 102, for installing tumbler 102；Reamer pileum
The lower inside of portion 302 is provided with driving member through hole, for installing the second driving member 103, and is supported limit to the second driving member 103
Position.The outside of re-drill bit bizet 302 is evenly equipped with the re-drill bit wing 307 that quantity, shape change with drilled strata characteristic, expands
The re-drill bit cutting tooth 308 that quantity, size change with drilled strata characteristic is distributed with eye drill bit wing 307.Reamer
The inner side of crown 302, the bottom of rectifying cavity 110 to the root of 302 bottom re-drill bit wing of re-drill bit bizet 307 are provided with reaming hole spray
Mouth runner 304, the bottom of reaming hole nozzle flow channel 304 is provided with re-drill bit nozzle 306.Due to the feature of re-drill bit bizet 302
Can be with making corresponding change with the geologic feature and requirement of engineering of drilled strata, the expansion on re-drill bit bizet 302
Eye bit nozzle runner 304, re-drill bit nozzle 306, shape, the chi of re-drill bit wing 307 and re-drill bit cutting tooth 308
Very little and quantity can all change and change with re-drill bit bizet 302.Preferably, the re-drill bit nozzle 306 can
To be conventional jet nozzle, jet nozzle, sky can also be installed and penetrate the high performance auxiliary rock nozzle such as jet nozzle, so that
Its performance reaches most preferably.
With continued reference to Fig. 1, differential pressure type drill bit decision design is balanced to the above embodiment of the present invention adaptive torque, neck eye is bored
First 4 include the pilot bit joint 401 on top and the pilot bit bizet 402 of bottom, pilot bit joint 401 and pilot bit
Bizet 402 is connected as one.The top in the outside of pilot bit joint 401, which is provided with, is used for what is be connected with second driving member 103
Connection screw thread (not shown), bottom is the affixed joint face of pilot bit joint, is pilot bit joint 401 and pilot bit
The affixed offer space of bizet 402；The inner side of pilot bit joint 401 is provided with drilling fluid runner, for providing excessively stream for drilling fluid
Space.The outer upper end of pilot bit bizet 402 is the affixed joint face of pilot bit bizet, and lower end is pilot bit pileum, leads eye
The affixed joint face shape of the affixed joint face of drill bit and pilot bit joint is complementary, for realize pilot bit joint 401 with
Pilot bit bizet 402 it is affixed.The shape of pilot bit bizet 402 is according to stratum changing features, with conventional bit design method
It is identical；The inner top side of pilot bit bizet 402 is that the neck that quantity is not waited is furnished with drilling fluid flowing hole, pilot bit bizet 402
The pilot bit cutting tooth 404 for cutting broken formation is distributed with eye drill bit wing 403, pilot bit wing 403；Lead eye
Bit nozzle runner is provided between the inner top side drilling fluid flowing hole of drill bit 402 and the root of pilot bit wing 403, neck eye is bored
Head nozzle flow channel bottom is provided with pilot bit nozzle 405；Pilot bit wing 403, pilot bit cutting tooth 404, neck eye are bored
The quantity of head nozzle 405 and the characteristic of drilled strata are closely related, it is necessary to carry out personalized designs, and its design method is bored with conventional
It is identical.
When adaptive torque described in the present embodiment balances differential pressure type bit operation, top BHA passes the pressure of the drill, moment of torsion
Passing crossover sub 2, and pass to pilot bit 4 first by torque transmission device 1 is used for fractured rock, gets out a diameter
Less well reaches the purpose of release shaft bottom stress；At the same time, the pressure of the drill used in the broken rock of re-drill bit 3 is then passed by moment of torsion
In the transmission jointly of thrust bearing 502 of thrust bearing confined planes 109 and second on dynamic device 1, the rotary course of torque transmission device 1
Re-drill bit 3 is driven to rotate by the interaction of the retainer 104 on driving member 102, the first elastic component 6 and locating part 105,
Broken rock moment of torsion is provided, the purpose of the adaptive equalization of invalid moment of torsion in the drilling process of re-drill bit 3 is reached.Acted on based on more than former
Reason, adaptive torque balance differential pressure type drill bit can reach the adaptive equalization of torque ripple in drilling process described in the present embodiment
With the purpose for improving rate of penetration.
Embodiment two：Differential pressure type drill bit is balanced there is provided a kind of adaptive torque referring to Fig. 6, with above-described embodiment one not
With in the present embodiment, the adaptive torque balance differential pressure type drill bit not only includes the moment of torsion described in above-described embodiment
Transmission device 1, crossover sub 2, re-drill bit 3, the elastic component 6 of pilot bit 4 and first, in addition to for transmitting re-drill bit 3
The pressure of the drill, the distribution re-drill bit 3 and the second elastic component 7 of the pressure of the drill ratio shared by pilot bit 4, second bullet used in broken rock
Property part 7 be positioned over the re-drill bit bizet 302, the tumbler 102 and second driving member 103 install coordinate after institute's shape
Into space in.Connect on torque transmission device 1 crossover sub 2, under connect pilot bit 4, re-drill bit 3 is installed at middle part, and it is acted on
It is initially used for transmitting the pressure of the drill and moment of torsion of top drilling tool to pilot bit 4；Secondly the pressure of the drill is passed into reaming hole by retainer 104
Drill bit 3, realizes the Self Adaptive Control of moment of torsion in drilling process by being interacted with the elastic component 6 of re-drill bit 3 and first, reaches
Reduce broken rock torque ripple and slow down or even avoid the purpose of stick-slip effect；Again, by with the elastic component of re-drill bit 3 and second
7 cooperating realizes automatically adjusting for the pressure of the drill in drilling process, reaches that adaptive adjustment re-drill bit eats deep purpose.Reaming hole
Drill bit 3 can carry out an axially upper positioning relative to the entirety that torque transmission device 1, crossover sub 2 and pilot bit 4 are constituted
The relative motion of shifting；Re-drill bit 3 can carry out the crankmotion of certain angle relative to torque transmission device 1 simultaneously.
Adaptive torque described in the above embodiment of the present invention balances differential pressure type drill bit, using torque transmission device 1 and first
Elastic component 6 realizes the adaptive equalization of moment of torsion in the drilling process of re-drill bit 3, slows down or even avoids stick-slip phenomenon in drilling process
The torsional pulse vibration of generation, reaches the invalid vibration absorbed in drilling process and then protects drill bit and BHA
Purpose；Using the second elastic component 7, the depth of tooth penetration of active control re-drill bit 3 in the earth formation, transmission distribution re-drill bit 3 with
The pressure of the drill between pilot bit 4, both can adjust pilot bit 4 to optimal, by rate of penetration with the distribution of the pressure of the drill of re-drill bit 3
Control is to most reasonable, moreover it is possible to slow down it is potential due to drill bit wedging stratum it is too deep caused by stick-slip effect；And by leading eye to bore
First 4 realize the change of shaft bottom structure in drilling process to discharge reservoir stress in advance with the size difference of re-drill bit 3, accelerate to bore
Enter speed.
With continued reference to Fig. 6 and referring to Fig. 7, Fig. 8, differential pressure type drill bit is balanced to the above embodiment of the present invention adaptive torque
Further design, the tumbler 102 is provided with the elastic component confined planes 116 coordinated with the second elastic component 7, the re-drill bit
Bizet 302 is provided with the elastic component mounting seat 309 for being used for placing second elastic component 7.Elastic component mounting seat 309 and elastic spacing
Face 116 coordinates the axially activity for limiting and fixing the second elastic component 7.Preferably, second elastic component 7 is used
Spring, as an alternative, second elastic component can also be for the parts of other flexible functions or with hydraulic pressure resistance
The element of Buddhist nun's effect.
With continued reference to Fig. 6, the above embodiment of the present invention adaptive torque balance differential pressure type drill bit is further designed, it is described
Elastic component mounting seat 309, second driving member 103 and the three of re-drill bit bizet 302 install and cooperatively form rectifying cavity
110, the rectifying cavity 110 is connected with described tap hole 107 and re-drill bit runner 305 respectively.Rectifying cavity 110 will be from secondary
The drilling fluid of excessively stream carries out blending integration in tap hole 107, and is transported in re-drill bit runner 305.Preferably, institute
It is to be installed by elastic component mounting seat 309, second driving member 103 and the three of re-drill bit bizet 302 to state rectifying cavity 110
The circular chamber cooperatively formed.
With continued reference to Fig. 6, Fig. 7, above-described embodiment adaptive torque balance differential pressure type drill bit is further designed, described the
One driving member 101 is provided with first seal 111, second driving member 103 and is sequentially provided with second seal 112 and the 3rd
Seal 113.The drilling fluid that first seal 111 is used to obstruct in drill string annulus enters in re-drill bit 3.Second seal
112 with the cooperating of elastic component mounting seat 309, and the drilling fluid return for preventing from flowing into rectifying cavity 110 enters by re-drill bit 3
With on torque transmission device 1 both both install in formed locating parts 105 and elastic component placed cavity 303；First sealing
Part 111 and second seal 112 between the two sealed cavity, lubricating oil or other fluent materials can be used to fill.
3rd seal 113 and the cooperating of diffusion drill bit 302, for obstructing outside bore hole annulus and the brill in rectifying cavity 110
Well liquid is mutually blended, and realizes the inner sealing of drill bit.
When adaptive torque described in the present embodiment balances differential pressure type bit operation, with drill bit described in above-described embodiment one
Advantage outside, difference is, it is spacing by the elastic component on torque transmission device 1 that the pressure of the drill of re-drill bit 3, which applies,
The interaction transmission of the elastic component 7 of face 116 and second, because the elastic reaction of the second elastic component 7 can make the wedging of re-drill bit 3
Depth carries out Self Adaptive Control, thus can further slow down viscous caused by the depth of tooth penetration of re-drill bit 3 is excessive
Sliding vibration, makes drilling efficiency further improve.
The pilot bit of adaptive torque balance differential pressure type drill bit described in above-described embodiment is replaced by minor diameter embodiment
The adaptive torque balance differential pressure type drill bit constitutes three-level adaptive torque balance differential pressure type drill bit；, will according to aforesaid way
The pilot bit of three-level adaptive torque balance differential pressure type drill bit is replaced by adaptive torque described in the embodiment of smaller diameter and put down
Weigh differential pressure type drill bit, can form level Four adaptive torque balance differential pressure type drill bit.It can be constructed according to this method multistage adaptive
Answer balance differential pressure type drill bit.
Above-described embodiment is used for explaining the present invention, rather than limits the invention, in the spirit and right of the present invention
It is required that protection domain in, to any modifications and changes for making of the present invention, both fall within protection scope of the present invention.
Claims (10)
1. a kind of adaptive torque balances differential pressure type drill bit, including crossover sub, re-drill bit and pilot bit, its feature exists
In, in addition to for transmitting the torque transmission device of moment of torsion, the adapter coupling, the torque transmission device are bored with the neck eye
Head links into an integrated entity, and the re-drill bit is located between the adapter coupling and the pilot bit, is installed on the moment of torsion and passes
On the outside of dynamic device；The torque transmission device includes being sequentially connected the first driving member being integrated, tumbler and the second driving member,
First driving member is connected with the crossover sub, and second driving member is connected with the pilot bit, the tumbler
At least one retainer is provided with, the torque transmission device also includes the locating part coordinated with the retainer, described spacing
Part is located at the re-drill bit bizet；Being provided with to coordinate with the retainer between the retainer and the re-drill bit bizet makes
It is used for the first elastic component that transmitting portions re-drill bit broken rock moment of torsion, damping torque are fluctuated.
2. adaptive torque as claimed in claim 1 balances differential pressure type drill bit, it is characterised in that in the re-drill bit bizet
Wall is provided with the elastic component placed cavity for being used for placing first elastic component.
3. adaptive torque as claimed in claim 1 balances differential pressure type drill bit, it is characterised in that the re-drill bit is PDC
Any one in drill bit, rock bit, diamond bit, the pilot bit is PDC drill bit, rock bit, diamond drill machine
Any one in head, the arbitrarily collocation of the re-drill bit and the pilot bit forms different types of combination type drill bit.
4. adaptive torque as claimed in claim 1 balances differential pressure type drill bit, it is characterised in that provided with use in the tumbler
It is equipped with what is connected with the main tap hole in the main tap hole circulated in drilling fluid, first driving member and the second driving member
The circulation passage circulated for drilling fluid, second driving member is provided with multiple tap holes.
5. adaptive torque as claimed in claim 1 balances differential pressure type drill bit, it is characterised in that the tumbler expands with described
The first thrust bearing is provided between eye drill bit positioning joint, the tumbler is provided with and stopping that first thrust bearing coordinates
Thrust bearing supporting surface.
6. adaptive torque as claimed in claim 5 balances differential pressure type drill bit, it is characterised in that the tumbler expands with described
The second thrust bearing is provided between eye drill bit, the tumbler is provided with the thrust shaft coordinated with second thrust bearing
Hold confined planes；The re-drill bit bizet is provided with the bearing block for being used for supporting second thrust bearing.
7. adaptive torque as claimed in claim 6 balances differential pressure type drill bit, it is characterised in that the bearing block, described the
Two driving members and the re-drill bit bizet three, which install, cooperatively forms rectifying cavity, the rectifying cavity respectively with described tap hole
And re-drill bit flow passage.
8. adaptive torque as claimed in claim 1 balances differential pressure type drill bit, it is characterised in that also including for transmitting reaming hole
Second elastic component of the pressure of the drill, the distribution re-drill bit and the pressure of the drill ratio shared by pilot bit, described second used in drill bit broken rock
Elastic component is positioned over the re-drill bit bizet, the tumbler and installs the space formed after cooperation with second driving member
In.
9. adaptive torque as claimed in claim 8 balances differential pressure type drill bit, it is characterised in that the tumbler be provided with
The elastic component confined planes that second elastic component coordinates, the re-drill bit bizet is provided with the elasticity for being used for placing second elastic component
Part mounting seat, the elastic component mounting seat, second driving member and re-drill bit bizet three installation cooperatively form whole
Flow chamber, the rectifying cavity respectively with described tap hole and re-drill bit flow passage.
10. the adaptive torque balance differential pressure type drill bit as described in claim 1 to 9 any one, it is characterised in that described the
One driving member is provided with first seal, second driving member and is sequentially provided with second seal and the 3rd seal；It is described
Secondary tap hole is located between the second seal and the 3rd seal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710664821.9A CN107246240B (en) | 2017-08-07 | 2017-08-07 | Adaptive torque balances differential pressure type drill bit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710664821.9A CN107246240B (en) | 2017-08-07 | 2017-08-07 | Adaptive torque balances differential pressure type drill bit |
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| CN107246240A true CN107246240A (en) | 2017-10-13 |
| CN107246240B CN107246240B (en) | 2019-03-19 |
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| CN201710664821.9A Active CN107246240B (en) | 2017-08-07 | 2017-08-07 | Adaptive torque balances differential pressure type drill bit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267941A (en) * | 2018-09-18 | 2019-01-25 | 贵州大学 | It is a kind of to adopt mining drill bit with shock-absorbing function |
| CN109488221A (en) * | 2018-11-26 | 2019-03-19 | 邹城兖矿泰德工贸有限公司 | Drill pipe for hard rocks |
| CN110905418A (en) * | 2019-12-03 | 2020-03-24 | 中国石油大学(华东) | Drill bit with energy-gathered attack unloading bottom hole stress and drilling method |
| CN112502630A (en) * | 2020-11-30 | 2021-03-16 | 中海石油(中国)有限公司 | Intelligent adaptive speed-up drill bit and drilling method |
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| JPS59183990U (en) * | 1983-05-19 | 1984-12-07 | 愛知車輛株式会社 | auger drill |
| CN2703863Y (en) * | 2004-06-10 | 2005-06-08 | 大庆石油管理局 | Dual-function shock-damping propellor |
| CN101253304A (en) * | 2005-08-04 | 2008-08-27 | 普拉德研究及开发股份有限公司 | Bi-directional drill string telemetry for measurement and drilling control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4429719A (en) * | 1982-08-05 | 1984-02-07 | Mosing Donald E | Pipe thread protector |
| JPS59183990U (en) * | 1983-05-19 | 1984-12-07 | 愛知車輛株式会社 | auger drill |
| CN2703863Y (en) * | 2004-06-10 | 2005-06-08 | 大庆石油管理局 | Dual-function shock-damping propellor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267941A (en) * | 2018-09-18 | 2019-01-25 | 贵州大学 | It is a kind of to adopt mining drill bit with shock-absorbing function |
| CN109267941B (en) * | 2018-09-18 | 2020-04-14 | 贵州大学 | Mining drill bit with shock-absorbing function |
| CN109488221A (en) * | 2018-11-26 | 2019-03-19 | 邹城兖矿泰德工贸有限公司 | Drill pipe for hard rocks |
| CN110905418A (en) * | 2019-12-03 | 2020-03-24 | 中国石油大学(华东) | Drill bit with energy-gathered attack unloading bottom hole stress and drilling method |
| CN110905418B (en) * | 2019-12-03 | 2021-02-26 | 中国石油大学(华东) | Drill bit with energy-gathered attack unloading bottom hole stress and drilling method |
| CN112502630A (en) * | 2020-11-30 | 2021-03-16 | 中海石油(中国)有限公司 | Intelligent adaptive speed-up drill bit and drilling method |
| CN112502630B (en) * | 2020-11-30 | 2023-03-10 | 中海石油(中国)有限公司 | Intelligent adaptive speed-up drill bit and drilling method |
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|---|---|
| CN107246240B (en) | 2019-03-19 |
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