CN202926511U - Drilling power tool and novel drilling tool - Google Patents
Drilling power tool and novel drilling tool Download PDFInfo
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- CN202926511U CN202926511U CN 201220249056 CN201220249056U CN202926511U CN 202926511 U CN202926511 U CN 202926511U CN 201220249056 CN201220249056 CN 201220249056 CN 201220249056 U CN201220249056 U CN 201220249056U CN 202926511 U CN202926511 U CN 202926511U
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Abstract
The utility model relates to a drilling power tool and a novel drilling tool. The drilling power tool comprises an energy conversion mechanism and a valve shaft system, wherein in the energy conversion mechanism is a rotary generator, the valve shaft system comprises a stator, a rotor, a movable valve plate assembly, a fixed valve plate assembly and a shaft assembly, the rotor moves left and right in a reciprocating mode and drives the movable valve plate assembly directly connected with the rotor, and the energy conversion mechanism is a screw rod or a worm wheel or a vane wheel. While the rotation of a drill can be achieved, changes of bit pressure on the drill and bit pressure at a shaft bottom are similar to continuous moderate changes as sine waves, and thus are favorable for reduction of strength of surrounding rock and development of crevices and can obviously promote rock breaking efficiency. Besides, the pressure on the drill at the shaft bottom changes periodically, and negative pressure and high pressure injection is generated alternately. When the pressure decreases, the surrounding rock environment is changed for underbalance or gas drilling liquid drill, and the penetration rate can be markedly promoted.
Description
Technical field
The utility model relate to for drilling engineering improve the drill bit efficiency of breaking rock, extend drilling life of bit, prevent the drilling well power tool of bit freezing, by its New well drilling power tool that consists of.
Background technique
The purpose of drilling well not just builds gas channel, the more important thing is and finds more petroleum resources and improve drilling efficient as far as possible.The problem that drilling engineering faces is how to guarantee " excellent, fast, as to economize " all the time.The research and development of drilling technology launch for these problems always.Wherein " excellent " refers to safety, and " soon " refers to efficiently, namely how to improve safely drilling efficiency." excellent and fast " is the consistent important goal of pursuing of oil company, drilling contractor and technical service company.Nearly 2 years, drilling well day expense rise suddenly and sharply, improve safely drilling speed particularly important, all the more so concerning deep-well and deepwater drilling.
Along with the increase of well depth, waterpower increases along the journey loss, and shaft bottom drill bit available water can sharply descend, and hydraulic drilling and clear rock ability weaken, and cause the deep-well drilling speed low, and bit wear is fast, and sticking card is serious etc.In addition, in order to improve oil recovery efficiency, horizontal well, lateral well, extended reach well, more and more pay attention to from formula well etc., current well is more and more irregular, and frictional resistance and moment of torsion are large, the slide drilling difficulty, and the well expanded range is little.
Drilling mode mainly contains impact type drilling well, conventional rotary drilling and the actively drilling well of spinning of research and development at present, the impact type drilling well is substituted by conventional rotary drilling already, and the drilling speed of conventional rotary drilling and bit wear situation still do not reach satisfaction, spin the research and development of drilling well from the sixties, in active research, still there are at present various technical bottlenecks not break through always.
Facts have proved, impactor can increase substantially bit speed, its rate of penetration improves more than 30% than common rotary drilling speed, hole deviation obviously reduces, and drilling tool damages and reduces, and drilling cost reduces more than 20%, one of major reason that this technology can not extensively be promoted is that the impactor quality does not pass a test, life-span does not also reach the needed time, and the present impactor life-span also can not meet the needs of actual well drilled generally at 50-80 hour.Therefore want to realize the application of ing technique in oil drilling, must improve the quality of impactor.
In addition, clash into the moment of hammering block at block stamp, active force varies widely amplitude at the utmost point in the short time, and gets form to the transmission of drill bit direction with stress wave, on certain impact is arranged the working lifes such as drill bit.For providing crushed rock needed impact force, the reciprocating type anvil that hits clashes into base, high-speed motion between the main body that causes contacting with the linear speed of relatively doing of 7.5m/s-10.2 m/s; In addition, need to come than high pulling torque the moment of torsion of balancing drill and stratum friction formation.High contact velocity produces a large amount of friction and heat with the combined effect that does contact, causes serious wear damage on contact surface.In drilling process, impactor has larger interference to LWD and MWD.
To sum up state, conventional rotary drilling drilling speed is slow, drill bit is easy to wear, it is large that the drilling well of spinning destroys damage to drilling tool, and self short in life-span, be badly in need of research and development a kind of new boring method and kit thereof, improve efficiency of breaking rock, extend bit life, prevent lock of tool drilling and solve the difficult problem etc. of directed (the being called for short ERD) drill mode of sliding by mode and instrument simply and effectively.
The model utility content
The technical problems to be solved in the utility model is: a kind of raising efficiency of breaking rock for drilling engineering is provided, extends bit life and reduces the sticking drilling well power tool that blocks possibility, and the New well drilling that is made of it instrument is provided on this basis.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of drilling well power tool comprises energy transfer mechanism and valve shaft system, it is characterized in that described energy transfer mechanism is rotating generator or torsion generator, and described valve shaft system is arranged on the energy transfer mechanism lower end, and is connected with energy transfer mechanism; Described valve shaft system comprises stator, rotor, moving valve plate assembly, fixed valve plate assembly and axle assembly; Rotor is positioned at the cavity of stator and left and right reciprocally swinging therein, and rotor passes the fixed valve plate assembly of lower end and do not contact with the fixed valve plate assembly; The fixed valve plate assembly is connected and fixed with the axle assembly body of below; The moving valve plate assembly is positioned at the lower end of rotor, is an integral body or directly is fastened on rotor with rotor; The moving valve plate assembly is similarly for the rotary valve plate with the eccentric circular hole that departs from the power tool central axis, the circular hole that passes through for rotor on the fixed valve plate assembly eccentric opening that departs from the power tool central axis, and the center in both holes does not overlap; Moving valve plate assembly and fixed valve plate assembly close contact, and the circular hole to-and-fro motion of relative fixed valve plate assembly make the eccentric circular hole of moving valve plate assembly interlaced with the circular hole of fixed valve plate assembly or overlap the valve opening of formation dynamic change; The cyclically-varying along with the rotation of rotating generator or torsion generator of the area of described valve opening.
By technique scheme, described rotating generator or torsion generator are screw rod or turbine or impeller.
By technique scheme, valve opening area is pressed sine or the variation of near sinusoidal rule generating period in time, and minimum valve opening area 〉=maximal valve opening area 1/5.
By the New well drilling instrument that technique scheme consists of, it is characterized in that: described drilling well power tool is arranged between the drill collar and drill bit of drill string; The cardan shaft assembly passes the joint that is separately positioned on drilling well power tool two ends.
By technique scheme, described drilling well power tool is arranged between the drill collar and drill bit of drill string, and between drilling well power tool and drill bit, screw rod/turbine is set; The cardan shaft assembly passes the joint be separately positioned on screw rod/turbine two ends.
New well drilling instrument by the described drilling well power tool of technique scheme is characterized in that: the drilling well power tool is connected with the vibration pipe nipple and forms combination, and described combination is arranged between the drill collar and drill bit of drill string; The cardan shaft assembly passes the joint that is separately positioned on drilling well power tool two ends; Wherein, the lower end of vibration pipe nipple is connected with the upper end of described drilling well power tool; Described vibration pipe nipple mainly comprises urceolus and is arranged on urceolus inner and can be along the vertical mandrel that slides of urceolus, be equipped with butterfly spring between the ring body wall of mandrel and urceolus, the base plane of mandrel is sealing surface, and the sealing face can or separate with the endoporus step surface combination seal of urceolus.
New well drilling instrument by the described drilling well power tool of technique scheme, it is characterized in that: the drilling well power tool is connected with the vibration pipe nipple and forms combination, described combination is arranged in well between drill collar and drill bit, and between drilling well power tool and drill bit, screw rod/turbine is set; The cardan shaft assembly passes the joint be separately positioned on screw rod/turbine two ends; Wherein, the lower end of vibration pipe nipple is connected with the upper end of described drilling well power tool; Described vibration pipe nipple mainly comprises urceolus and is arranged on urceolus inner and can be along the vertical mandrel that slides of urceolus, be equipped with butterfly spring between the ring body wall of mandrel and urceolus, the base plane of mandrel is sealing surface, and the sealing face can or separate with the endoporus step surface combination seal of urceolus.
By technique scheme, the amplitude of vibration pipe nipple is 0.4～1.3cm, and vibration frequency is 16-18Hz, and acceleration is less than 3g.
Basic principle of the present utility model is: the energy transfer mechanism of drilling well power tool is converted to drilling fluid kinetic energy the mechanical energy of rotation, connected valve is produced to rotatablely move, the flow cyclically-varying that produces when making modulating valve work is as far as possible for sinusoidal, make valve top generation water hammer, and act on valve seat and to produce gentle oscillating force, pass to drill bit by drilling tool, form periodically the pressure of the drill of continuous soft variation; Perhaps, drilling well power tool upper end is connected with the vibration short circuit, drilling fluid kinetic energy acts on the vibration pipe nipple that is connected with drilling well power tool top, make the spring in pipe nipple follow the generation of to-and-fro motion together valve oscillating force, under the double action of valve oscillating force and spring force, cause other drilling tools to-and-fro motion in the axial direction that is connected with the drilling well power tool, periodically variable force transmission is to drill bit, form the pressure of the drill of periodically gentle vibration, improve efficiency of breaking rock; The frequency of soft pulsation is 15～26Hz in addition, and the strain rate of drilling tool is for being a constant lower than 10-4～10-2S-1 speed, and what comes unit, and the load effect that drilling tool is born is identical with static load, thereby extends the operating life of the drilling tools such as drill bit; It is kinetic friction in the shaft bottom that the method makes drilling tool, reduces frictional resistance, reduces sticking card possibility, increases the pressure of the drill, further improves efficiency of breaking rock.
Compared with prior art, the utlity model has following remarkable technological progress:
1, provide a kind of new well drilling and rock crushing method.
Present broken rock mode mainly contains rock fracture in dynamic indentation percussion drill, the broken rock routine of rotation and the broken rock of impact rotating, wherein the broken rock mode of main flow is the broken rock of rotation, rate of penetration still remains to be improved, rock fracture in dynamic indentation is due to row's landwaste difficulty, usage comparison is few now, the impact rotating breaking technique for rock is all higher than front two kinds of efficiency of breaking rock, but has some technical problems, still not by wide popularization and application.
The broken rock mode of this boring method is that rock breaking method is rotated in continuous soft pulsation, is different from form conventional rotation rock-breaking and well-drilling, and the mildly variation continuously of similar sinusoidal variations rule namely by the New well drilling power tool, the pressure of the drill of conventional rotary drilling is occured.Simultaneously, by the new type power instrument, bottom pressure being changed into the bottom pressure of continuous soft variation, in one-period, is that the shaft bottom is local for under-balanced state for some time, realizes under balance pressure drilling.
There is essential distinction in the broken rock of continuous soft pulsation breaking technique for rock and impact rotating, is mainly reflected on the strain rate of instrument and rock.Be used for the continuous soft vibration rock break-off process of drilling well, the DHA motional amplitude is 0.8cm, and frequency is 17HZ, and namely its speed of action is 0.8 * 10 to the maximum
-2, and during Static behavior instrument and strain rate be 10
-4～10
-2, therefore, the active force in instrument and rock belongs to quiet active force, and the steep stress wave of shape matching can not appear in instrument; And impact rotating drilling well process, instrument and strain rate be greater than 10
-2, in the short period, produce stress in BHA and concentrate after block stamp effect anvil, easily crack.
Continuous soft pulsation breaking technique for rock also is different from conventional rotary drilling, and the value of the contact force of its drill bit and rock is that consecutive periods changes, and the effect frequency is 15～25 HZ; And the value of the drill bit of the broken rock mode of conventional rotation and rock contact force is the near-sighted constant that is.
In theory, under the same terms, there is such relation in the efficiency of breaking rock of the method that the utility model provides with rock fracture in dynamic indentation, the broken rock of rotation and the broken rock of impact rotating: impact rotating break rock〉the broken rock of rotation under the pressure of the drill of continuous soft variation〉conventional rotation breaks rock〉rock fracture in dynamic indentation.But consider single drill bit total footage, rate of penetration, the pressure of the drill, reduce sticking card and Holes of Complicated Wells application etc., what effect was best is the broken rock of continuous soft vibration, and it not only improves drilling speed, extend single drill bit total footage, increase available weight, reduce the bit freezing risk, be specially adapted to extended reach well, horizontal well drilling and deep-well Holes of Complicated Wells etc.
Obviously, continuous soft vibration rotation rock breaking method is to be different from conventional drilling and a kind of new well drilling and rock crushing method of the drilling well of spinning, and namely improves efficiency of breaking rock, protects and extend simultaneously the life-span of the drilling tools such as drill bit.
2, the New well drilling power tool that power tool is provided and is combined to form by this instrument variation.
Power tool this as special valve shaft system, by power tool power tool under conventional well is combined, power tool is combined with special valve, be along the axial vibration mechanical energy of drilling tool with the drilling fluid kinetic transformation.
3, improve efficiency of breaking rock.
The method and instrument thereof are mainly the broken rock mode of the rotation of routine to be made into the broken rock of revolution of the soft variation of the pressure of the drill, thereby improve efficiency of breaking rock.
According to the rock breaking principle, impact cutting crushed rocks under certain axial pressure, strength of rock will reduce by 50%～80%.To be that contact stress is instantaneous reach high value to the characteristics of impulsive load, and stress ratio is more concentrated.Because the moving hardness of rock is less than quiet hardness, Gu easily produce microscopic crack.And striking velocity is larger, and rock brittleness increases, and is conducive to cranny development, and therefore, little ballistic work just can broken solid rock, and static pressure is fashionable needs very large power.
Power tool of the present utility model is 16-18Hz for the speed f that its valve shaft system provides, if the maximum valid circulation area of valve opening is
Amax, its minimum valid circulation area is
AminSo, any time, the valid circulation area of this valve opening is:
In formula
φA value corresponding to initial position when beginning to rotate for valve can be according to this formula inverse out.
The relative discharge of modulating valve in the utility model
Q/QmaxWith relative opening degree
A/AmaxThe relation that is in line, namely to change caused changes in flow rate be a constant to one-stroke:
In formula, R is that the maximum that valve can be controlled is called regulating ratio with the minimum discharge ratio,
R=Qmax/Qmin
By fluid mechanics as can be known, the flow by valve becomes positively related relation with pressure reduction before and after valve:
In formula, c refers to coefficient, and namely pressure reduction is very little on the impact that valve seat bears total pressure F.
Therefore, if ignore flow instantaneous variation amount, total pressure that valve seat bears is changed to:
It is relevant with surface pump machine discharge capacity and the combination of pipe string that valve seat bears total pressure F.For concrete drilling process, the impact that can think to manage the string combination is a constant, and namely F is directly proportional to discharge capacity Q.
Total pressure that valve seat bears (is called for short BHA by BHA, as follows) pass to drill bit, form periodically variable the pressure of the drill, soft pulsation the pressure of the drill produces the impulsive load of alternation to bottom rock, because continuous high frequency ground applies impulsive load to rock, make the cranny development of rock in the detritus process more complete, strength decreased, more be conducive to rock generation volumetric fracture, thereby improve efficiency of breaking rock.
4, increase the pressure of the drill, further improve drilling speed.
In addition, total pressure that valve seat bears acts on the vibration pipe nipple by energy transfer mechanism, after the vibration pipe nipple is received this power effect, the suffered active force of its inner spring changes, spring can hinder this variation tendency and resiliently deformable occurs, so the reciprocating vibration motion occurs the following drilling tool of spring in the axial direction.According to force balance principle, the characteristics of motion of spring is:
In formula
kRefer to elasticity coefficient.
The motion equation that is the BHA forced vibration is:
In formula
γRefer to damping constant.
The utility model relies on vibration BHA, abolish the quiet frictional resistance between drilling tool and the borehole wall, making bottom hole assemblies is the kinetic friction state in the shaft bottom, friction factor reduces greatly, overcome the generation of pipe string helical buckling, reduce frictional resistance and moment of torsion, extend the scope that reaches of boring, improve the load transfer effect and improve the complete translation of technical term Chinese that rate of penetration (being called for short ROP) need to provide standard, can apply little the pressure of the drill and creep into.Reduce transverse vibration and torsional vibration.And existing various impactor does not possess such function.
5, the protection drilling tool, extend bit life.
According to top derivation conclusion, drill bit is soft continuous variation to the active force of rock, belongs to static load, rather than impacts, and the strain rate of the drilling tools such as drill bit is 10
-4～10
-2It is identical that effect and drilling tool bear dead weight; stress and strain is milder; the BHA deformation comparison is evenly distributed in each crystal grain; far below the strength of materials limit, can not destroy the drilling tool Caused Vibration, be different from the well drilling tool that spins and be subjected to active force to belong to impulsive load; thereby the protection drilling tool extends bit life.
In addition, in the pressure of the drill continually varying class impact rotating crept into, it is very short that during fractured rock, cutlery and rock are in time of larger interaction force, reduces the wearing and tearing of cutting cutlery, extends the working life of drill bit; Be easy to reach volumetric fracture in the drilling method that the utility model proposes, the friction factor of the friction factor of volumetric fracture during lower than surface failure of rock also reduced the wearing and tearing of cutting cutlery, extends the working life of drill bit; Drilling speed is fast, and the relative wear of cutting element reduces, and extends the working life of drill bit.
At present, in conventional drilling, the pressure of the drill is constant always, the drilling tool quick abrasion; In using the impactor drilling process, although shortened the time of contact of drill bit and rock, impact and cause the strain rate of drilling well greater than 10
-2, drill bits etc. easily produce stress and concentrate, and premature fatigue is destroyed.
6, reduce sticking card possibility.
Area of passage constantly changes, produce pressure pulse and cause axial vibration, finally spread out of from this instrument, vibration pipe nipple BHA once vibrates with the sine function form, abolish the quiet frictional resistance between drilling tool and the borehole wall, friction factor reduces greatly, overcomes the generation of pipe string helical buckling, thereby reduced the possibility of the sticking card of BHA, especially for stoping the directed sticking card trend when being combined into line slip and creeping into of using.Existing bumper jar belongs to afterwards to be processed, can not advance reduction or prevent sticking card risk.
7 pairs of logging while drilling technology (are called for short LWD, as follows) and drilling measuring technology (being called for short MWD, as follows) impact is not quite, the vibration that produces in working order can not destroy MWD, LWD instrument and EVAC (Evacuation Network Computer Model) signal, in BHA, location comparison freely, can be on or below the MWD instrument.
The New well drilling power tool long working life of 8 drilling well power tools and formation thereof, energy transfer mechanism is screw rod, its life-span is suitable with the screw rod life-span; If energy transfer mechanism is the torsion generator of other all metal construction, its life-span is longer.
Description of drawings
Fig. 1 is the structural representation of first embodiment's of the utility model drilling well power tool.
Fig. 2 is that I-I of Fig. 1 is cutd open and shown enlarged diagram.
Fig. 3 is the moving valve plate of Fig. 1 and the opening area structure for amplifying schematic diagram that fixed valve plate forms.
Fig. 4 is second embodiment of the present utility model, wherein drilling well power tool and bottom hole assemblies schematic diagram.
Fig. 5 is the 3rd embodiment of the present utility model, and wherein the drilling well power tool connects after instrument powered by conventional energy and the bottom hole assemblies schematic diagram.
Fig. 6 is drilling well power tool and vibration short circuit composite structure schematic diagram in the 4th embodiment of the present utility model.
Fig. 7 is born total pressure F temporal evolution schematic diagram by valve opening area A and bottom pressure N and valve seat in the 4th embodiment of the utility model.
In figure: 1, drill collar; 2, the drilling well power tool 2; 3, drill bit; 4, vibration short circuit; 5, drilling tool powered by conventional energy; 2a, rotor; 2a1, stator; 2b, moving valve plate assembly; 2c, fixed valve plate assembly; 2d, axle assembly; 2e, valve opening; 4a, mandrel; 4b, sealing surface; 4c, belleville spring; 4d, urceolus.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment 1
Referring to Fig. 1-3: a kind of drilling well power tool 2, comprise energy transfer mechanism and valve shaft system, it is characterized in that described energy transfer mechanism is rotating generator or torsion generator, is generally screw rod or turbine or impeller; Described valve shaft system is arranged on the energy transfer mechanism lower end, and is threaded connection with energy transfer mechanism; Described valve shaft system comprises stator 2a1, rotor 2a, moving valve plate assembly 2b, fixed valve plate assembly 2c and axle assembly 2d, and rotor 2a does the left and right toward compound motion in the cavity of stator 2a1; Rotor 2a pass the lower end fixed valve plate assembly 2c circular hole and do not contact with fixed valve plate assembly 2c; Described moving valve plate assembly 2b is positioned at the lower end of rotor 2a, is an integral body or directly is fastened on rotor 2a with rotor 2a; The upper-end surface close contact of the lower end surface of moving valve plate assembly 2b and fixed valve plate assembly 2c, and the circular hole to-and-fro motion of fixed valve plate assembly 2c relatively; Described fixed valve plate assembly 2c is connected and fixed by screw thread and the axle assembly 2d body of below.Moving valve plate assembly 2b is the rotary valve plate with the eccentric circular hole of power tool 2 central axis, the circular hole of fixed valve plate assembly 2c is similarly the eccentric opening that departs from power tool 2 central axis, and the center in both holes does not overlap, along with rotor 2a reciprocally swinging, make the interlaced formation opening of moving valve plate assembly 2b and fixed valve plate assembly 2c, the area generating period variation of valve opening 2e, the time little when large.
Referring to Fig. 1-4, a kind of New well drilling power tool is arranged on the drilling well power tool 2 in embodiment 1 between the drill collar 1 and drill bit 3 of drill string; The cardan shaft assembly passes the joint that is separately positioned on drilling well power tool 2 two ends.
Embodiment 3
Referring to Fig. 1-3,5, a kind of New well drilling instrument is arranged on the drilling well power tool 2 in embodiment 1 between the drill collar 1 and drill bit 3 of drill string, and drilling tool 5 powered by conventional energy is set between drilling well power tool 2 and drill bit 3; The cardan shaft assembly passes the joint that is separately positioned on drilling tool powered by conventional energy 5 two ends.
Embodiment 4
Referring to Fig. 1-3,6, a kind of New well drilling instrument, drilling well power tool 2 upper ends in embodiment 1 are threaded connection with vibration short circuit 4 are combined as integral body, whole upper end is connected with drill collar 1, whole underpart is threaded connection instrument 5 powered by conventional energy, and instrument 5 powered by conventional energy and drill bit 3 are threaded connection.This vibration pipe nipple 4 mainly comprises mandrel 4a, mandrel interior edge face 4b, belleville spring 4c and urceolus 4d; Mandrel 4a is positioned at the upper end enlarged diameter section of urceolus 4d and can slides up and down in this section, and belleville spring 4c is between mandrel 4a and urceolus 4d and mandrel 4a is resetted to position by the high position; The enlarged diameter section of urceolus 4d and the reduced diameter section of lower end form interior step surface, and when mandrel 4a was positioned at extreme lower position, in the mandrel interior edge face 4b of mandrel lower end and the ladder of urceolus 4d, step surface was in contact with one another sealing.
Embodiment 5
Referring to Fig. 1-3,6, a kind of New well drilling instrument is threaded connection drilling well power tool 2 upper ends in embodiment 1 and vibration short circuit 4, is combined as integral body, and whole upper end is connected with drill collar 1 in well, and whole underpart and drill bit 3 are threaded connection.This vibration pipe nipple 4 mainly comprises mandrel 4a, mandrel interior edge face 4b, belleville spring 4c and urceolus 4d; Mandrel 4a is positioned at the upper end enlarged diameter section of urceolus 4d and can slides up and down in this section, and belleville spring 4c is between mandrel 4a and urceolus 4d and mandrel 4a is resetted to position by the high position; The enlarged diameter section of urceolus 4d and the reduced diameter section of lower end form interior step surface, and when mandrel 4a was positioned at extreme lower position, in the mandrel interior edge face 4b of mandrel lower end and the ladder of urceolus 4d, step surface was in contact with one another sealing.
Embodiment 6
As Fig. 1-4, a kind of boring method that forms well comprises:
(A) on drilling well power tool 2 being arranged in well between drill collar 1 and drill bit 3, this drilling well power tool 2 comprises rotor 2a, stator 2a1, moving valve plate assembly 2b, fixed valve plate assembly 2c axle assembly 2d;
(B) by drilling well power tool 2, drilling fluid waterpower can be converted to the mechanical energy of rotor 2a rotation, pass to the moving valve plate of valve shaft assembly or directly pass through single-screw rotor 2a reciprocally swinging by the cardan shaft assembly, make the interlaced formation opening of moving valve plate 2b and fixed valve plate 2c, the area generating period variation of valve opening 2e, the time little when large.
(C) by regulating drilling well power tool 2, make its rotational frequency 10
-4-10
-2S
-1, the suffered load of whole drilling tool is belonged in the static load scope.
(D) area by valve opening 2e changes continuously, and each small transition activities can produce a corresponding continually varying water attack supercharging or step-down ripple in valve opening 2e bottom, makes valve seat bear the continuous soft variation of total pressure F.Simultaneously, the area by valve opening 2e changes continuously makes valve local head loss coefficient that continuous variation also occur, and the drill bit bottom pressure N of place occurs to change continuously.
(E) by drilling tool, the total pressure that the fixed valve plate assembly 2c of continuous soft variation bears being passed to drill bit, form continually varying the pressure of the drill, is also that valve seat bears total pressure F, thus the raising efficiency of breaking rock; Regulate bottom pressure N by valve opening 2e, the local formation under balance pressure drilling in the shaft bottom.
Area by modulating valve opening 2e is the overlapping area in hole of moving valve plate assembly 2b and fixed valve plate assembly 2c, and the area of valve opening 2e is pressed sine or the variation of near sinusoidal rule generating period in time.
The size of the area by modulating valve opening 2e, guarantee minimum valve opening area be greater than maximal valve opening area 1/5 on.
The total pressure that valve seat bears of described continuous soft variation is the size by modulating valve opening 2e area, make the flow generating period variation by the drilling fluid of valve opening, make the drilling liquid pressure generating period variation of carrying on valve seat, thereby produce the valve oscillating force, and it is sinusoidal variations that valve seat bears the total pressure value, or other soft pulsatile change.
Periodically continuously gentle the pressure of the drill that changes is to pass to drill bit by the pressure that drilling tool bears moving valve plate assembly 2b and fixed valve plate assembly 2c to produce, and valve seat bears total pressure F value with the near sinusoidal rule variation of frequency 15～26Hz.
Embodiment 7
Participate in Fig. 1-3,6,7, a kind of boring method that forms well comprises:
(A) drilling well power tool 2 upper ends and vibration short circuit 4 lower ends are threaded connection, and on being arranged in well between drill collar 1 and drill bit 3, this vibration pipe nipple 4 is cylindrical body, mainly comprises mandrel 4a, mandrel interior edge face 4b, belleville spring 4c and urceolus 4d; Mandrel 4a is positioned at the upper end enlarged diameter section of urceolus 4d and can slides up and down in this section, and belleville spring 4c is between mandrel 4a and urceolus 4d and mandrel 4a is resetted to position by the high position; The enlarged diameter section of urceolus 4d and the reduced diameter section of lower end form interior step surface, and when mandrel 4a was positioned at extreme lower position, in the mandrel interior edge face 4b of mandrel lower end and the ladder of urceolus 4d, step surface was in contact with one another sealing.
(B) by drilling well power tool 2, drilling fluid waterpower can be converted to the mechanical energy of rotor 2a rotation, pass to the moving valve plate of valve shaft assembly or the direct rotor 2a reciprocally swinging by single screw rod by the cardan shaft assembly, make the opening of moving valve plate assembly 2b and fixed valve plate assembly 2c interlaced or overlap, the area generating period variation of valve opening 2e, the time little when large.
(C) by regulating drilling well power tool 2, make its rotational frequency 10
-4-10
-2S
-1, the suffered load of whole drilling tool is belonged in the static load scope.
(D) area by valve opening 2e changes continuously, each small transition activities can produce a corresponding continually varying water attack supercharging or step-down ripple at the valve place, makes moving valve plate assembly 2b and the continuous soft variation of fixed valve plate assembly total pressure that 2c bears.Simultaneously, the area by valve opening 2e changes continuously makes valve local head loss coefficient that continuous variation also occur, drill bit place bottom pressure
NOccur to change continuously.
(E) pass to vibration pipe nipple 4 on continually varying water attack supercharging or step-down wave direction, due to the variation of inside and outside differential pressure, when pressure changed from small to big, it acts on sealing surface 4b, and mandrel 4a occured axially to top offset, eliminate when pressure, belleville spring 4c resets it.At this moment, the oscillating force of surge pressure effect and vibration short circuit is little when large also the time, and is synchronous with the total pressure that valve seat bears.
The total pressure of (F) by drilling tool, the valve seat of continuous soft variation being born and near the oscillating force of vibration short circuit pass to drill bit, form continually varying the pressure of the drill, are also that the downward valve seat of direction bears total pressure F, thus the raising efficiency of breaking rock; By the valve regulation bottom pressure
N, the local formation under balance pressure drilling in the shaft bottom.
The pressure of the drill F of the gentle vibration of described periodicity is that the actings in conjunction such as valve seat bearing capacity and butterfly spring 4c produce, and the valve seat bearing capacity changes with the near sinusoidal rule of frequency 15～26Hz, induces butterfly spring 4c to follow variation.
Described valve oscillating force is the size by modulating valve opening 2e area, make the flow generating period variation by the drilling fluid of valve opening 2e, make the drilling liquid pressure generating period variation of carrying on valve seat, thereby produce the valve oscillating force, and the value of valve seat bearing pressure is sinusoidal variations, or other soft pulsatile change.
Embodiment 8
Referring to Fig. 1-3,5: a kind of boring method that forms well, drilling well power tool 2 upper ends are connected with drill collar 1 in well, drilling well power tool 2 underparts and screw rod or turbo-power instrument 5 are threaded connection, and screw rod or turbo-power instrument 5 and drill bit 3 are threaded connection.
Only below to realize exemplary embodiments of the present utility model, based on other form of claim basic principle of the present utility model within the utility model scope.
Claims (11)
1. drilling well power tool comprises energy transfer mechanism and valve shaft system, it is characterized in that described energy transfer mechanism is rotating generator or torsion generator, and described valve shaft system is arranged on the energy transfer mechanism lower end, and is connected with energy transfer mechanism; Described valve shaft system comprises stator, rotor, moving valve plate assembly, fixed valve plate assembly and axle assembly; Rotor is positioned at the cavity of stator and left and right reciprocally swinging therein, and rotor passes the fixed valve plate assembly of lower end and do not contact with the fixed valve plate assembly; The fixed valve plate assembly is connected and fixed with the axle assembly body of below; The moving valve plate assembly is positioned at the lower end of rotor, is an integral body or directly is fastened on rotor with rotor; The moving valve plate assembly is similarly for the rotary valve plate with the eccentric circular hole that departs from the power tool central axis, the circular hole that passes through for rotor on the fixed valve plate assembly eccentric opening that departs from the power tool central axis, and the center in both holes does not overlap; Moving valve plate assembly and fixed valve plate assembly close contact, and the circular hole to-and-fro motion of relative fixed valve plate assembly make the eccentric circular hole of moving valve plate assembly interlaced with the circular hole of fixed valve plate assembly or overlap the valve opening of formation dynamic change; The cyclically-varying along with the rotation of rotating generator or torsion generator of the area of described valve opening.
2. drilling well power tool according to claim 1, it is characterized in that: described rotating generator or torsion generator are screw rod or turbine or impeller.
3. drilling well power tool according to claim 1 and 2, it is characterized in that: valve opening area is pressed sine or the variation of near sinusoidal rule generating period in time, and minimum valve opening area 〉=maximal valve opening area 1/5.
4. New well drilling instrument that is consisted of by the described drilling well power tool of claim 1 or 2, it is characterized in that: described drilling well power tool is arranged between the drill collar and drill bit of drill string; The cardan shaft assembly passes the joint that is separately positioned on drilling well power tool two ends.
5. New well drilling instrument that is consisted of by drilling well power tool claimed in claim 3, it is characterized in that: described drilling well power tool is arranged between the drill collar and drill bit of drill string; The cardan shaft assembly passes the joint that is separately positioned on drilling well power tool two ends.
6. New well drilling instrument that is consisted of by the described drilling well power tool of claim 1 or 2, it is characterized in that: described drilling well power tool is arranged between the drill collar and drill bit of drill string, and between drilling well power tool and drill bit, screw rod/turbine is set; The cardan shaft assembly passes the joint be separately positioned on screw rod/turbine two ends.
7. New well drilling instrument that is consisted of by drilling well power tool claimed in claim 3, it is characterized in that: described drilling well power tool is arranged between the drill collar and drill bit of drill string, and between drilling well power tool and drill bit, screw rod/turbine is set; The cardan shaft assembly passes the joint be separately positioned on screw rod/turbine two ends.
8. a combination has the New well drilling instrument of the described drilling well power tool of the claims 1 or 2, it is characterized in that: the drilling well power tool is connected with the vibration pipe nipple and forms combination, and described combination is arranged between the drill collar and drill bit of drill string; The cardan shaft assembly passes the joint that is separately positioned on drilling well power tool two ends; Wherein, the lower end of vibration pipe nipple is connected with the upper end of described drilling well power tool; Described vibration pipe nipple mainly comprises urceolus and is arranged on urceolus inner and can be along the vertical mandrel that slides of urceolus, be equipped with butterfly spring between the ring body wall of mandrel and urceolus, the base plane of mandrel is sealing surface, and the sealing face can or separate with the endoporus step surface combination seal of urceolus.
9. a combination has the New well drilling instrument of the described drilling well power tool of the claims 3, it is characterized in that: the drilling well power tool is connected with the vibration pipe nipple and forms combination, and described combination is arranged between the drill collar and drill bit of drill string; The cardan shaft assembly passes the joint that is separately positioned on drilling well power tool two ends; Wherein, the lower end of vibration pipe nipple is connected with the upper end of described drilling well power tool; Described vibration pipe nipple mainly comprises urceolus and is arranged on urceolus inner and can be along the vertical mandrel that slides of urceolus, be equipped with butterfly spring between the ring body wall of mandrel and urceolus, the base plane of mandrel is sealing surface, and the sealing face can or separate with the endoporus step surface combination seal of urceolus.
10. a combination has the New well drilling instrument of the described drilling well power tool of the claims 8, it is characterized in that: the amplitude of vibration pipe nipple is 0.4～1.3cm, and vibration frequency is 16-18Hz, and acceleration is less than 3g.
11. a combination has the New well drilling instrument of the described drilling well power tool of the claims 9, it is characterized in that: the amplitude of vibration pipe nipple is 0.4～1.3cm, and vibration frequency is 16-18Hz, and acceleration is less than 3g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220249056 CN202926511U (en) | 2012-05-30 | 2012-05-30 | Drilling power tool and novel drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220249056 CN202926511U (en) | 2012-05-30 | 2012-05-30 | Drilling power tool and novel drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926511U true CN202926511U (en) | 2013-05-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220249056 Withdrawn - After Issue CN202926511U (en) | 2012-05-30 | 2012-05-30 | Drilling power tool and novel drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926511U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705140A (en) * | 2012-05-30 | 2012-10-03 | 中国石油化工集团公司 | Drilling power tool, drilling tool and drilling method for forming boreholes |
| CN105756627A (en) * | 2014-12-19 | 2016-07-13 | 中石化胜利石油工程有限公司钻井工艺研究院 | Downhole low-pressure pulse jet modulator |
| CN107075910A (en) * | 2014-12-12 | 2017-08-18 | 哈里伯顿能源服务公司 | Drilling tool bearing and drive system module |
| CN107269219A (en) * | 2017-06-19 | 2017-10-20 | 西南石油大学 | Vane type drilling speed enhancing device |
| CN110068451A (en) * | 2018-01-23 | 2019-07-30 | 中石化石油工程技术服务有限公司 | Tool test system is rushed in a kind of torsion |
| CN110199083A (en) * | 2015-01-29 | 2019-09-03 | 托马斯公司 | Regulating device and the method for using the regulating device in the borehole |
-
2012
- 2012-05-30 CN CN 201220249056 patent/CN202926511U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705140A (en) * | 2012-05-30 | 2012-10-03 | 中国石油化工集团公司 | Drilling power tool, drilling tool and drilling method for forming boreholes |
| CN102705140B (en) * | 2012-05-30 | 2014-08-20 | 中国石油化工集团公司 | Drilling power tool, drilling tool and drilling method for forming boreholes |
| CN107075910A (en) * | 2014-12-12 | 2017-08-18 | 哈里伯顿能源服务公司 | Drilling tool bearing and drive system module |
| US10301876B2 (en) | 2014-12-12 | 2019-05-28 | Halliburton Energy Services, Inc. | Drilling tool bearing and drivetrain assembly |
| CN107075910B (en) * | 2014-12-12 | 2020-05-12 | 哈里伯顿能源服务公司 | Drilling tool bearing and drive system assembly |
| CN105756627A (en) * | 2014-12-19 | 2016-07-13 | 中石化胜利石油工程有限公司钻井工艺研究院 | Downhole low-pressure pulse jet modulator |
| CN110199083A (en) * | 2015-01-29 | 2019-09-03 | 托马斯公司 | Regulating device and the method for using the regulating device in the borehole |
| CN110199083B (en) * | 2015-01-29 | 2021-07-13 | 托马斯公司 | Adjustment device and method for using the same in a borehole |
| CN107269219A (en) * | 2017-06-19 | 2017-10-20 | 西南石油大学 | Vane type drilling speed enhancing device |
| CN110068451A (en) * | 2018-01-23 | 2019-07-30 | 中石化石油工程技术服务有限公司 | Tool test system is rushed in a kind of torsion |
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