CN102777122B - Impact screw drilling tool - Google Patents
Impact screw drilling tool Download PDFInfo
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- CN102777122B CN102777122B CN201210291930.8A CN201210291930A CN102777122B CN 102777122 B CN102777122 B CN 102777122B CN 201210291930 A CN201210291930 A CN 201210291930A CN 102777122 B CN102777122 B CN 102777122B
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Abstract
The invention discloses an impact screw drilling tool, and belongs to a well drilling technology and the impact screw drilling tool can be used for solving the problems that the screw drilling tool instantly produces an impact force and the cutting tooth of a drill bit is easy to damage in the prior art. The impact screw drilling tool comprises a bypass valve assembly, a motor assembly, a universal shaft assembly and a transmission shaft assembly which are sequentially connected, wherein the bypass valve assembly mainly consists of a valve body, a valve core, a spring and a sieve plate, the motor assembly mainly consists of a stator shell and a rotor, the universal shaft assembly mainly consists of a universal shaft shell and a universal shaft, and the transmission shaft assembly mainly consists of a transmission shaft shell, a hollow transmission shaft, a thrust bearing set and a radial bearing set; and a flow control assembly is arranged between the transmission shaft assembly and the universal shaft assembly. According to the screw drilling tool disclosed by the invention, on the basis of the original performance, the flow control assembly produces a flexible impact force, the rock-breaking efficiency of the drill bit is improved, the mechanical penetration rate is improved, the service life is greatly prolonged, and the application range of the screw drilling tool disclosed by the invention is widened by utilizing hydraulic power pressurizing assemblies at different positions.
Description
Technical field
The present invention relates to drilling engineering hydraulic impacter and well dynamic field of tool, specifically, relate to a kind of impact type helicoid hydraulic motor.
Background technology
How improving bit speed is the technical barrier that current countries in the world are being studied, particularly, along with the increase of well depth, waterpower increases along journey loss, shaft bottom drill bit available water can sharply decline, hydraulic drilling and clear rock ability weaken, and cause the problems such as deep-well drilling speed is low, bit wear fast, sticky card is serious; In addition, in order to improve oil recovery efficiency, horizontal well, Multilateral Wells, extended reach well, more and more paid attention to from formula well etc., current well is more and more irregular, and frictional resistance and moment of torsion are large, slide drilling difficulty, and well expanded range is little.
The core technology content that improves bit speed is how to improve the efficiency of breaking rock of drill bit, around this technology contents, except research bit technique, beyond jetting breaking technique for rock and other drilling technology, the drilling technology that spins has been proposed again nearly decades, and carry out a large amount of technical research and applied with on-the-spot, its principle is to connect a hydraulic impacter (spin Connector) on drill bit top, in drilling process, drill bit under certain the pressure of the drill with drill string rotating, also be subject to the high-frequency percussion stress from impactor simultaneously, and rotation and impact synergy under fractured rock.
The drilling well of spinning can increase substantially the rate of penetration of drilling well, is with a wide range of applications.Facts have proved, impactor and torsion impactor can increase substantially bit speed, and its rate of penetration improves more than 30% than common rotary drilling speed, and hole deviation obviously reduces, and drilling tool damages and reduces.And the core content of the drilling technology that spins is to connect an impactor above the nearly drill bit of drilling tool, in drilling process, drilling tool is rotation on one side, and produce an axial impact force acts on drill bit to impactor on one side, drill bit produces the impact force of an alternation to rock, reach the object of fast broken rock.
The imagination of oil rotary drilling technology starts from Europe, and the core of this technology is hydraulic impacter instrument.
1867-1887 years: in succession occurred hydraulic impacter drilling tool.
1887: the patent that Britain had once authorized novel drilling method to German Wo Bushi.
1900-1905: the engineer B of Russia Wals base has designed several oil drillings impactor that surges, and he is the first potential theory researcher of hydraulical impact drilling tool action principle.
Twentieth century forties: the H Ge Mofu of the former Soviet Union develops side valve type positive interaction hydraulic impacter, and U.S. Ba Xingeer has developed valve formula positive interaction hydraulic impacter alive.
The fifties: U.S. Ai Molei has developed valve formula reaction impactor alive; Gulf Oil Corporation and the Shell Oil Company have also developed hydraulic impacter separately, are mainly used in oil/gas drilling and lock of tool drilling processing.
The sixties: Pan Mei company of the U.S. improves the material and design of its hydraulic impacter through great efforts, and the bite type matching with it, makes it to become better and approaching perfection day by day, advantage and the potentiality of hydraulical impact rotary drilling technology are fully shown; Hungary has developed the 5 kind double acting hydraulical impact drilling tools of diameter at 48~160mm.
Be more successfully the hydraulic double-action churn drilling tools of Japanese thribble company development the seventies: Japan also starts to develop hydraulical impact drilling tool.
After the nineties: deep-well, ultradeep well, easily inclined shaft, hard formation, horizontal well and extended reach well shared ratio in oil drilling is increasing, the hard formation running in deep-well and firm hard formation are poor with conventional simple rotary drilling method rock breaking efficiency, drilling efficiency is low, and the hole deviation problem in deep-well also becomes increasingly conspicuous; In horizontal well and extended reach well drilling, along with the increase of horizontal movement, the pressurization of horizontal well is more difficult, and the damage of drilling tool is also even more serious, and this technology again obtains people's attention in oil drilling.
The drilling technology that spins that 7,000,000 dollars of researchs of the U.S. and German joint investment are particularly applied at oil drilling in ultradeep well.The deep-well research institute of a university of Germany has done a large amount of emulation and performance test work indoor to churn drill well tool since 1987, is also stepping up to study the application of this technology in ultradeep well at present.
The impactor type that at present develop countries in the world is more, can be divided into by power mode difference surge, the form such as pneumatic, electronic, gas-liquid mixed and mechanism.Oil drilling or geologic prospect area research most widely used be to surge and pneumatic two kinds, wherein, hydraulic impacter be fluid power taking drilling fluid as drive medium, can be divided into again the forms such as valve formula positive interaction, the reaction of valve formula, valve formula double acting (containing valve formula and the throttle type of living), jetting type, jet absorption type according to the difference of structure.The primary structure of these impactors comprises the changement being mainly made up of parts such as piston, spring, seal, block stamps and the energy delivery mechanisms being mainly made up of the parts such as hammering block, drill bit etc., and the commutation of hydraulic impacter action is to rely on drilling fluid to drive the valve member of changement to realize.
China just began one's study as far back as 1958 and applies this technology, after the eighties, the drilling technology that spins reaches its maturity in geological core probing field, develop five classes more than 20 such as jetting type, jet absorption type, positive interaction type, double-acting type and wire line coring hydraulic impacter and planted impactor, total footage exceedes megameter, has obtained good economic benefit, and drilling efficiency significantly improves, creep at hard formation especially, average rate of penetration improves 50%~100% than rotary drilling drilling speed.
Since nineteen ninety-five, the research of Dezhou oil drilling research institute by recent years and repeatedly practising, obtain certain achievement, the YSC-178 type hydraulic jet type impactor that it manufactures and designs at home many oil fields and area has carried out entering for more than ten times well test, more than 1000 meter, drilling depth, rate of penetration on average improves 30%~50%, is up to 160%, first impactor is applied in 4000 meters of dark oil drilling deep-wells, the life-span of impactor consumable accessory is enhanced.
Drilling Process research of Chang Qing Petroleum Authority has designed the CQS type positive interaction impactor that surges, in eight mouthfuls of shallow wells, test, further verify that the drilling well of spinning improves the superiority of rate of penetration in hard formation, but because the impactor internal construction of this kind of structure has spring members, the life-span of spring has determined the life-span of impactor, its application life is shorter, gives to apply and has caused difficulty.
Nineteen ninety-five is so far: Petroleum Univ. is always at development of new hydraulic impacter, and in Tarim Basin In Xinjiang piedmont tectonic belts, carried out test of many times, and rate of penetration has improved 20%~60% compared with rotary drilling.
One of major reason that impactor drilling technology can not extensively be promoted is that impactor quality does not pass a test, and the life-span does not also reach the needed time, cannot meet the needs of actual well drilled, and this technology is not yet carried out popularization and applied in decades.On-the-spot application attestation, two defects that cannot overcome of hydraulic impacter ubiquity: the one, the erosion of drilling fluid or solid phase particles wherein, make switch valve member can not normally realize the action of regulation, work undesired, do not work, and the valve member life-span is short, thereby caused whole impactor unstable properties, the life-span is short; The 2nd, vibration frequency and impact force change along with the variation of the factor such as drilling fluid displacement and pump pressure, it is a stochastic variable, this variation, is all difficult to accomplish conform to actual conditions to drill bit design (or type selecting) or to solving of crushing rock formation acting, and rock fracture in dynamic indentation effect is undesirable.Air hammer is taking air as circulatory mediator, and operating principle and hydraulic impacter are similar, because of the erosion of its no liquid or the destruction of solid phase particles, design is relatively easy, and life-span and effect are all better than hydraulic impacter, use but only limit to air drilling, range of application limitation is too large.Alternate manner impactor can not be applied to oil drilling.
Chinese patent notice of authorization CN101581196B, January 11 2012 notice of authorization day, the patent that denomination of invention is " having the screw drill transmission shaft assembly of impact function ", " a kind of screw drill transmission shaft assembly with impact function is disclosed, it has power transmission shaft and ectosome, between ectosome and power transmission shaft, be provided with bidirectionally limited bearing, feature is, power transmission shaft is divided into uploads moving axis and lower drive shaft two parts, also be divided into upper ectosome and lower ectosome two parts corresponding to the ectosome of power transmission shaft, in toroidal cavity between lower ectosome and lower drive shaft, be movably equipped with annular rigid body impact sleeve and upper Qi Zhenzuo, annular rigid body impact sleeve and upper Qi Zhenzuo connect as one, be provided with spring on upper top of opening the seat that shakes, the inner roof wall of the other end of spring and lower ectosome joins, lower end at annular rigid body impact sleeve is provided with striker, striker is fixedly connected on lower drive shaft, shake between seat and lower drive shaft upper opening, between annular rigid body impact sleeve and lower drive shaft, be provided with and open vibrating device, the upper end of lower drive shaft is provided with the pressure transmission hole communicating with its inner chamber, the position of pressure transmission hole is located at opens the seat top that shakes, between be provided with and open vibrating device, it has not only kept the original function of helicoid hydraulic motor, also there is long service life, controllable frequency, the hydraulic impacter function of controlled impact force size, can be in the wellbore construction of any well type, increase substantially drill bit efficiency of breaking rock, improve drilling machinery drilling speed, reduce wellbore construction cost." impact force that produces of this invention is still for moment produces, and easily destroys the cutting teeth of drill bit, therefore all higher to the performance requirement of drill bit and other drilling tools.
In sum, the drilling technology that spins can significantly improve efficiency of breaking rock, but impactor operating principle has seriously restricted further developing of this technology, limit the application of rock fracture in dynamic indentation technology in drilling well, be necessary to improve according to the drilling well of spinning the principle of efficiency of breaking rock, design other class instruments and substitute current impactor.Patent is to widen the range of application of helicoid hydraulic motor " to have the screw drill transmission shaft assembly of impact function ", opens up impactor research frontier, provide a kind of new direction, but it still has certain deficiency, is necessary to further improve.
Summary of the invention
The object of the present invention is to provide a kind of impact type helicoid hydraulic motor, solve helicoid hydraulic motor moment generation impact force in prior art and make the cutting teeth of drill bit easily damage and cause short problem in application life.
In order to address the above problem, the technical solution used in the present invention is as follows:
A kind of impact type helicoid hydraulic motor, comprise the by-pass valve assembly connecting successively, motor assembly, universal drive shaft assembly and driving-shaft assembly, wherein, by-pass valve assembly is mainly made up of valve body, spool, spring, sieve plate, and motor assembly is mainly made up of stator case and rotor, universal drive shaft assembly is mainly made up of universal shaft housing and universal drive shaft, and driving-shaft assembly is mainly made up of power transmission shaft, thrust bearings and the journal bearing group of transmission shaft shell, hollow; Between described driving-shaft assembly and universal drive shaft assembly, be provided with Flow-rate adjustment assembly, the upper end of this Flow-rate adjustment assembly is connected with universal drive shaft, and lower end is connected with power transmission shaft.
Further, described Flow-rate adjustment assembly is mainly made up of the water conservancy diversion water cap being connected with universal drive shaft and the flow regulating tube that is connected with power transmission shaft, and wherein, water conservancy diversion water cap is positioned at flow regulating tube and is flexibly connected with it; Flow regulating tube one end face is burnishing surface, other end is male and fomale(M&F), water conservancy diversion water cap is provided with pod apertures, the lowest part of this pod apertures is concordant with the lowest part of the concavo-convex end face of flow regulating tube, the highest point of pod apertures is higher than the highest point of the concavo-convex end face of flow regulating tube, ensure to have a determining deviation between the two, make pod apertures effective area minimum value non-vanishing, non-vanishing by the mud flow rate minimum value of pod apertures.
Being projected as of the concavo-convex end face of described flow regulating tube is periodically variable curve shape, as sine curve or plan sine curve, wherein intend sine curve finger-type shape and be similar to sinusoidal curve, preferred as one, the concavo-convex end face of described flow regulating tube is sinusoidal end face, i.e. after flow regulating tube expansion, the projection of this sine end face is sine curve shape.
In order to increase impact force, between the upper end of described by-pass valve assembly or by-pass valve assembly and motor assembly, be provided with waterpower pressurization assembly.
For broaden application scope, the drilling rod of hollow is set between described by-pass valve assembly and waterpower pressurization assembly, or, two above waterpower pressurization assemblies that connect are successively set in the upper end of by-pass valve assembly, and between by-pass valve assembly and waterpower pressurization assembly or the drilling rod of hollow is set between two waterpower pressurization assemblies.
Further, described waterpower pressurization assembly comprises two kinds of forms of motion, and it is as follows that it distinguishes corresponding structure:
The piston form that moves upward
Shell, joint ring, disk spring group and pipe close that this waterpower pressurization assembly mainly communicates by the mandrel of hollow, up and down form; Described mandrel upper end is provided with screw thread, the upper inner that bottom is positioned at shell and middle part and shell is connected, between the bottom in mandrel outside and middle part, being provided with shoulder and bottom wall thickness is 1/3~1/2 of middle part wall thickness, lower end is connected with pipe close by screw thread, disk spring group is socketed on the mandrel bottom between pipe close and shoulder, one group of joint ring is between mandrel middle part and shell, another group joint ring jointly forms piston between pipe close and shell and with pipe close and mandrel, and shell lower end is provided with screw thread;
In the time that waterpower pressurization assembly is positioned at the upper end of by-pass valve assembly, shell lower end and by-pass valve assembly upper end are threaded connection;
In the time that waterpower pressurization assembly is between by-pass valve assembly and motor assembly, mandrel upper end and by-pass valve assembly lower end are threaded connection, and shell lower end and motor assembly upper end are threaded connection;
In the time that waterpower pressurization assembly connects successively, the mandrel upper end of waterpower pressurization assembly and the shell lower end of superposed waterpower pressurization assembly that are positioned at bottom are threaded connection;
In the time that waterpower pressurization assembly is positioned at the upper end of drilling rod, shell lower end and drilling rod upper end are threaded connection;
In the time that waterpower pressurization assembly is positioned at the lower end of drilling rod, mandrel upper end and drilling rod lower end are threaded connection;
Piston moves downward form
Shell, joint ring and disk spring group that this waterpower pressurization assembly mainly communicates by the mandrel of hollow, up and down form; Described mandrel is positioned at outer casing underpart, mandrel lower end is provided with screw thread, the inner side that top and middle part are all positioned at shell and middle part and are arranged at the shoulder of shell lower end is connected, the wall thickness that is provided with shoulder and top between the top in mandrel outside and middle part is greater than the wall thickness at middle part, disk spring group is socketed on the mandrel middle part between the shoulder of mandrel and the shoulder of shell lower end, one group of joint ring forms piston between mandrel top and shell and with mandrel, another group joint ring is between the shoulder and mandrel of shell lower end, and shell upper end is provided with screw thread;
In the time that waterpower pressurization assembly is positioned at the upper end of by-pass valve assembly, mandrel lower end and by-pass valve assembly upper end are threaded connection;
In the time that waterpower pressurization assembly is between by-pass valve assembly and motor assembly, shell upper end and by-pass valve assembly lower end are threaded connection, and mandrel lower end and motor assembly upper end are threaded connection;
In the time that waterpower pressurization assembly connects successively, the shell upper end of waterpower pressurization assembly and the mandrel lower end of superposed waterpower pressurization assembly that are positioned at bottom are threaded connection;
In the time that waterpower pressurization assembly is positioned at the upper end of drilling rod, mandrel lower end and drilling rod upper end are threaded connection;
In the time that waterpower pressurization assembly is positioned at the lower end of drilling rod, shell upper end and drilling rod lower end are threaded connection.
Compared with prior art, beneficial effect of the present invention is as follows:
(1) the present invention designs ingeniously, and it is convenient to realize, and is applicable to applying.
(2) calculate and learn according to hydraulics, at certain drilling depth, near nearly drill bit, a valve is installed, while closing with certain speed, due to the effect of inertia of drilling fluid, in drilling tool more than valve, hydraulic pressure can increase gradually, can produce the hydraulic pressure impact force that is equivalent to several tons of weight pressure, therefore the present invention's design discharge between motor assembly and driving-shaft assembly regulates assembly, for controlling the mud flow rate in helicoid hydraulic motor, with the hydraulic pressure that utilizes its generation, the drill bit of power transmission shaft and bottom connection is produced to impact force, thereby realize the application of drilling technology in drilling well of spinning that rotation breaking technique for rock and rock fracture in dynamic indentation technology are combined into, improve the efficiency of well drilling and rock crushing.
(3) the present invention utilizes flow regulating tube and the relative motion of water conservancy diversion water cap, and the uneven whole end face of flow regulating tube adopts sinusoidal end surface shape or intend sinusoidal end surface shape, make it the pod apertures relative motion with water conservancy diversion water cap, flow by pod apertures place is along sine curve shape or intend the cyclically-varying of sine curve shape, flow in helicoid hydraulic motor is changed into along the cyclically-varying of sine curve shape or plan sine curve shape, thereby produce along the soft impact force of sine curve shape or plan sinusoidal variation, avoid impact force moment generation can destroy the problem of Cutter, improve the application life of helicoid hydraulic motor.
(4) in Flow-rate adjustment assembly of the present invention without use seal, flow is controlled in relative motion by flow regulating tube and water conservancy diversion water cap, ensure the continuity of athletic performance, thereby increase the reliability of helicoid hydraulic motor entirety, and then improved application life of the present invention, solve an existing impactor short difficult problem in application life.
(5) the present invention is both for downhole drill bit provides rotary power, again for it provides impact the pressure of the drill, the two technology of spinning combining has significantly improved efficiency of breaking rock, thereby extend drilling life of bit, improve rate of penetration, on the basis of the original performance of guarantee, increase the function of existing helicoid hydraulic motor, and widened the range of application of helicoid hydraulic motor.
(6) the present invention is under the effect of Flow-rate adjustment assembly, the consecutive periods that the mud flow rate of motor of flowing through is sine curve shape or intends sine curve shape changes, and the output torque of helicoid hydraulic motor is directly proportional to flow, thereby cause moment of torsion to be the cyclically-varying of sine curve shape or plan sine curve shape, for downhole drill bit provides impact torsion, further improve efficiency of breaking rock, and then extended drilling life of bit, increased rate of penetration.
(7) realize in order to coordinate Flow-rate adjustment assembly regulating pondage to produce soft continuously surge pressure the drilling well of spinning, the present invention arranges waterpower pressurization assembly at an upper portion thereof, the supercharging ripple producing because of water attack is converted to thrust, has further improved the impact force of whole helicoid hydraulic motor.
(8) the present invention's assembly that not only waterpower can be pressurizeed is installed on the different position in by-pass valve assembly upper end or lower end, can also increase as required drilling rod or increase multiple waterpower pressurization assemblies, meet the requirement of different model drill bit and stratum impact power size, but also can regulate Flow-rate adjustment assembly and waterpower pressurization assembly structure size, to adapt to different requirements, thereby widen range of application of the present invention, for the popularization application of the drilling technology that spins is laid a good foundation.
(9) the present invention carries out soft improvement by the impact force that drilling fluid is produced in downhole tool to water attack formation, promote helicoid hydraulic motor to high pulling torque, long-life, multifunctional direction development, open up hydraulic impacter research frontier, by spinning, the new stage has been pushed in the application of drilling technology popularization to, promoted to spin the brokenly deep structure research of rock principle, has epoch-making meaning to drilling technology.
Brief description of the drawings
Fig. 1 is the deployed configuration schematic diagram of flow regulating tube in the present invention.
Fig. 2 is the deployed configuration schematic diagram of Flow-rate adjustment assembly in the present invention.
Fig. 3 is the structural representation of the present invention-embodiment 1.
Fig. 4 is the move upward structural representation of waterpower pressurization assembly of form of the piston in the present invention.
Fig. 5 is the structural representation of the present invention-embodiment 2.
Fig. 6 is the structural representation of the present invention-embodiment 3.
Fig. 7 is the structural representation of the present invention-embodiment 4.
Fig. 8 is the structural representation of the present invention-embodiment 5.
Fig. 9 is the structural representation that the piston in the present invention moves downward the waterpower pressurization assembly of form.
In above-mentioned accompanying drawing, the corresponding name of Reference numeral is called:
1-by-pass valve assembly, 2-waterpower pressurization assembly, 3-motor assembly, 4-universal drive shaft assembly, 5-Flow-rate adjustment assembly, 6-driving-shaft assembly, 7-drilling rod;
21-mandrel, 22-shell, 23-joint ring, 24-disk spring group, 25-pipe close;
51-water conservancy diversion water cap, 52-pod apertures, 53-flow regulating tube.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is elaborated, embodiments of the present invention include but not limited to the following example.
As shown in Figure 1, this impact type helicoid hydraulic motor, comprise the by-pass valve assembly 1 connecting successively, motor assembly 3, universal drive shaft assembly 4 and driving-shaft assembly 6, wherein, by-pass valve assembly is mainly made up of valve body, spool, spring, sieve plate, motor assembly is mainly made up of stator case and rotor, and universal drive shaft assembly is mainly made up of universal shaft housing and universal drive shaft, and driving-shaft assembly is mainly made up of power transmission shaft, thrust bearings and the journal bearing group of transmission shaft shell, hollow; Between described driving-shaft assembly 6 and universal drive shaft assembly 4, be provided with Flow-rate adjustment assembly 5, the upper end of this Flow-rate adjustment assembly is connected with universal drive shaft, and lower end is connected with power transmission shaft.
As shown in Figures 2 and 3, this Flow-rate adjustment assembly 5 is mainly made up of the water conservancy diversion water cap 51 being connected with universal drive shaft and the flow regulating tube 53 that is connected with power transmission shaft, and wherein, water conservancy diversion water cap is positioned at flow regulating tube and flexible connection with it; Flow regulating tube one end face is burnishing surface, other end is uneven whole, water conservancy diversion water cap 51 is provided with pod apertures 52, the lowest part of this pod apertures is concordant with the lowest part of the concavo-convex end face of flow regulating tube, the highest point of pod apertures is higher than the highest point of the concavo-convex end face of flow regulating tube, ensure to have a determining deviation between the two, make pod apertures effective area minimum value non-vanishing, non-vanishing by the mud flow rate minimum value of pod apertures.Being projected as of this uneven whole end face of flow regulating tube is periodically variable curve shape, for example sine curve or plan sine curve, wherein intend sine curve finger-type shape and be similar to sinusoidal curve, preferred as one, this uneven end face is sinusoidal end face, i.e. after flow regulating tube expansion, the projection of this sine end face is sine curve shape.
In the time that helicoid hydraulic motor is worked, flow regulating tube and the relative motion of water conservancy diversion water cap, make the pod apertures relative motion of sinusoidal end face and the water conservancy diversion water cap of flow regulating tube, thereby the cyclically-varying of sine curve shape will be through the mud flow rate of pod apertures, and then make in helicoid hydraulic motor and the interior generation of above drilling tool water attack, cause the drill bit that helicoid hydraulic motor lower end connects to produce to the pressure of the drill of shaft bottom generation the cyclically-varying that is sine curve shape, make the also generating period variation of moment of torsion of helicoid hydraulic motor output simultaneously, not only provide impact force but also provide twisted power, form the broken rock mode of a kind of combined drilling, the rock mode of spinning brokenly, because the pressure of the drill is the cyclically-varying of sine curve shape, and sinusoidal variation is soft, it is soft that this changes impact force, thereby avoid impact force moment generation can destroy the problem of Cutter, and then the application life of having improved helicoid hydraulic motor.
As shown in Figure 4 and Figure 5, the difference of the present embodiment and embodiment 1 is to be provided with between by-pass valve assembly 1 and motor assembly 3 waterpower pressurization assembly 2, this waterpower pressurization assembly is the piston form that moves upward, and the shell 22, joint ring 23, disk spring group 24 and the pipe close 25 that mainly communicate by the mandrel 21 of hollow, up and down form; Described mandrel upper end is provided with screw thread and by-pass valve assembly lower end is threaded connection, the upper inner that bottom is positioned at shell and middle part and shell is connected, between the bottom in mandrel outside and middle part, being provided with shoulder and bottom wall thickness is 1/3~1/2 of middle part wall thickness, lower end is connected with pipe close by screw thread, disk spring group is socketed on the mandrel bottom between pipe close and shoulder, one group of joint ring is between mandrel middle part and shell, another group joint ring forms with it piston between pipe close and shell, and shell lower end is provided with screw thread and motor assembly upper end is threaded connection.
Flow-rate adjustment assembly changes the flow in helicoid hydraulic motor, causes water attack supercharging or water attack step-down, and the water attack supercharging ripple causing thus or water attack step-down ripple are delivered to waterpower pressurization assembly.In the time that the casing internal pressure of waterpower pressurization assembly increases, the pressure-acting of drilling fluid, in piston end surface, promotes piston opposite shell and moves upward, and compress dish-shaped groups of springs, coordinates with flow regulating tube simultaneously, jointly increases the pressure of the drill; In the time that the casing internal pressure of waterpower pressurization assembly reduces, disk spring group drives piston to reset gradually, and actuating pressure fades away, and on the pressure of the drill, impact also reduces gradually.Obviously, the pressure that waterpower pressurization assembly produces is consistent with Water Hammer direction, has strengthened the impact effect of impact type screw rod.And in the time that helicoid hydraulic motor makes mud flow rate be the cyclically-varying of sine curve shape, piston is with respect to shell back and forth movement, thereby increase the amplitude that helicoid hydraulic motor impact force changes, produce thus significant concussion displacement, and then significant the pressure of the drill that impacts of generation, improve rock breaking efficiency, extended drilling life of bit, increased rate of penetration.
As shown in Figure 6, the difference of the present embodiment and embodiment 2 is only that waterpower pressurization assembly 2 is arranged at by-pass valve assembly 1 upper end, and shell lower end and by-pass valve assembly upper end are threaded connection, and the screw thread of mandrel upper end is used for connecting external agency.This set-up mode is for the darker drilling well of the degree of depth, because the position of waterpower pressurization assembly is higher, can reduce the impact of destroyed rock stratum on its generation, and increase the impact force that the drilling fluid in helicoid hydraulic motor produces, and then raising rock breaking efficiency, increase the service life.
Embodiment 4
As shown in Figure 7, the difference of the present embodiment and embodiment 3 is only to be also provided with between by-pass valve assembly and waterpower pressurization assembly the drilling rod 7 of hollow, the lower end of drilling rod and by-pass valve assembly upper end are threaded connection, and shell lower end and the drilling rod upper end of waterpower pressurization assembly are threaded connection.This set-up mode is for the darker drilling well of the degree of depth, because the position of waterpower pressurization assembly is higher, reduce the impact of destroyed rock stratum on its generation on the one hand, increase on the other hand the impact force that the drilling fluid in helicoid hydraulic motor produces, thereby raising rock breaking efficiency, increases the service life.
As shown in Figure 8, the difference of the present embodiment and embodiment 3 is that waterpower pressurization assembly upper end is also provided with drilling rod 7 and another waterpower pressurization assembly 2 successively, the mandrel upper end and the drilling rod lower end that are positioned at the waterpower pressurization assembly of bottom are threaded connection, the shell lower end of drilling rod upper end and superposed waterpower pressurization assembly is threaded connection, and the screw thread of the mandrel upper end of superposed waterpower pressurization assembly is used for connecting external agency.This set-up mode adopts two waterpower pressurization assemblies further to increase the pressure of the inner drilling fluid of helicoid hydraulic motor, thereby improve widely impact force, more strengthen the impact effect of impact type screw rod, and more improved rock breaking efficiency, be particularly useful for the rock stratum, stratum that part is comparatively hard.
As shown in Figure 9, the difference of the present embodiment and embodiment 2 is that described waterpower pressurization assembly is that piston moves downward form, and the shell 22, joint ring 23 and the disk spring group 24 that mainly communicate by the mandrel 21 of hollow, up and down form, described mandrel is positioned at outer casing underpart, mandrel lower end is provided with screw thread and motor assembly upper end is threaded connection, the inner side that top and middle part are all positioned at shell and middle part and are arranged at the shoulder of shell lower end is connected, the wall thickness that is provided with shoulder and top between the top in mandrel outside and middle part is greater than the wall thickness at middle part, disk spring group is socketed on the mandrel middle part between the shoulder of mandrel and the shoulder of shell lower end, one group of joint ring forms with it piston between mandrel top and shell, another group joint ring is between the shoulder and mandrel of shell lower end, shell upper end is provided with screw thread and by-pass valve assembly lower end is threaded connection.
In the time that the casing internal pressure of waterpower pressurization assembly increases, the pressure-acting of drilling fluid, in piston end surface, promotes piston opposite shell and moves downward, and compress dish-shaped groups of springs, coordinates with flow regulating tube simultaneously, jointly increases the pressure of the drill; In the time that the casing internal pressure of waterpower pressurization assembly reduces, disk spring group drives piston to reset gradually, and actuating pressure fades away, and on the pressure of the drill, impact also reduces gradually.Obviously, the pressure that waterpower pressurization assembly produces is consistent with Water Hammer direction, has strengthened the impact effect of impact type screw rod.And in the time that helicoid hydraulic motor makes mud flow rate be the cyclically-varying of sine curve shape, piston is with respect to shell back and forth movement, thereby increase the amplitude that helicoid hydraulic motor impact force changes, produce thus concussion displacement, and then the pressure of the drill is impacted in generation, improve rock breaking efficiency, extended drilling life of bit, increased rate of penetration.
But it should be noted that, the mandrel lower end of the waterpower pressurization assembly that this piston moves downward is connected combination with the drilling tool of bottom, and in the time creeping into, the pressure on mandrel passes to drill bit by drilling tool, can produce the pressure of the drill of vibration, but the concussion displacement producing is remarkable not.
According to above-described embodiment; just can realize well the present invention; but above-described embodiment is only to realize several embodiment of the present invention; based on regulating through the mud flow rate in the drilling tool of motor assembly lower end; make its inner generation water attack supercharging or water attack step-down; cause the pressure of the drill cyclically-varying, or compression wave passes to waterpower pressurization assembly, strengthen other form of principle of the pressure of the drill variation effect all within protection domain of the present invention.
Claims (12)
1. an impact type helicoid hydraulic motor, comprise the by-pass valve assembly (1) connecting successively, motor assembly (3), universal drive shaft assembly (4) and driving-shaft assembly (6), wherein, by-pass valve assembly (1) is mainly by valve body, spool, spring, sieve plate composition, motor assembly (3) is mainly made up of stator case and rotor, universal drive shaft assembly (4) is mainly made up of universal shaft housing and universal drive shaft, driving-shaft assembly (6) is mainly by transmission shaft shell, the power transmission shaft of hollow, thrust bearings and journal bearing group form, it is characterized in that, between described driving-shaft assembly (6) and universal drive shaft assembly (4), be provided with Flow-rate adjustment assembly (5), the upper end of this Flow-rate adjustment assembly (5) is connected with universal drive shaft, lower end is connected with power transmission shaft, described Flow-rate adjustment assembly (5) is mainly made up of the water conservancy diversion water cap (51) being connected with universal drive shaft and the flow regulating tube (53) that is connected with power transmission shaft, and wherein, water conservancy diversion water cap (51) is positioned at flow regulating tube (53) and flexible connection with it, flow regulating tube (53) one end faces are burnishing surface, other end is male and fomale(M&F), water conservancy diversion water cap (51) is provided with pod apertures (52), the lowest part of this pod apertures (52) is concordant with the lowest part of the concavo-convex end face of flow regulating tube (53), and the highest point of pod apertures (52) is higher than the highest point of the concavo-convex end face of flow regulating tube (53).
2. a kind of impact type helicoid hydraulic motor according to claim 1, is characterized in that, the concavo-convex end face of described flow regulating tube (53) is sinusoidal end face.
3. a kind of impact type helicoid hydraulic motor according to claim 2, is characterized in that, is provided with waterpower pressurization assembly (2) between the upper end of described by-pass valve assembly (1) or by-pass valve assembly (1) and motor assembly (3).
4. a kind of impact type helicoid hydraulic motor according to claim 3, is characterized in that, is also provided with the drilling rod (7) of hollow between described by-pass valve assembly (1) and waterpower pressurization assembly (2).
5. a kind of impact type helicoid hydraulic motor according to claim 3, is characterized in that, the upper end of described by-pass valve assembly (1) is provided with two above waterpower pressurization assemblies (2) that connect successively.
6. a kind of impact type helicoid hydraulic motor according to claim 5, is characterized in that, described by-pass valve assembly (1) and waterpower are pressurizeed between assembly (2) or between two waterpower pressurization assemblies (2), is also provided with the drilling rod (7) of hollow.
7. according to a kind of impact type helicoid hydraulic motor described in claim 3 or 4, it is characterized in that, shell (22), joint ring (23), disk spring group (24) and pipe close (25) that described waterpower pressurization assembly (2) mainly communicates by the mandrel (21) of hollow, up and down form, described mandrel (21) upper end is provided with screw thread, the upper inner that bottom is positioned at shell (22) and middle part and shell (22) is connected, between the bottom in mandrel (21) outside and middle part, being provided with shoulder and bottom wall thickness is 1/3~1/2 of middle part wall thickness, lower end is connected with pipe close (25) by screw thread, disk spring group (24) is socketed on mandrel (21) bottom between pipe close (25) and shoulder, one group of joint ring (23) is positioned between mandrel (21) middle part and shell (22), another group joint ring (23) is positioned between pipe close (25) and shell (22) and with pipe close (25) and mandrel (21) and jointly forms piston, shell (22) lower end is provided with screw thread,
In the time that waterpower pressurization assembly (2) is positioned at the upper end of by-pass valve assembly (1), shell (22) lower end and by-pass valve assembly (1) upper end are threaded connection;
In the time that waterpower pressurization assembly (2) is positioned between by-pass valve assembly (1) and motor assembly (3), mandrel (21) upper end and by-pass valve assembly (1) lower end are threaded connection, and shell (22) lower end and motor assembly (3) upper end are threaded connection.
8. a kind of impact type helicoid hydraulic motor according to claim 5, it is characterized in that, shell (22), joint ring (23), disk spring group (24) and pipe close (25) that described waterpower pressurization assembly (2) mainly communicates by the mandrel (21) of hollow, up and down form, described mandrel (21) upper end is provided with screw thread, the upper inner that bottom is positioned at shell (22) and middle part and shell (22) is connected, between the bottom in mandrel (21) outside and middle part, being provided with shoulder and bottom wall thickness is 1/3~1/2 of middle part wall thickness, lower end is connected with pipe close (25) by screw thread, disk spring group (24) is socketed on mandrel (21) bottom between pipe close (25) and shoulder, one group of joint ring (23) is positioned between mandrel (21) middle part and shell (22), another group joint ring (23) is positioned between pipe close (25) and shell (22) and with pipe close (25) and mandrel (21) and jointly forms piston, shell (22) lower end is provided with screw thread,
In the time that waterpower pressurization assembly (2) connects successively, mandrel (21) upper end of waterpower pressurization assembly (2) and shell (22) lower end of superposed waterpower pressurization assembly (2) that are positioned at bottom are threaded connection.
9. according to a kind of impact type helicoid hydraulic motor described in claim 4 or 6, it is characterized in that, shell (22), joint ring (23), disk spring group (24) and pipe close (25) that described waterpower pressurization assembly (2) mainly communicates by the mandrel (21) of hollow, up and down form, described mandrel (21) upper end is provided with screw thread, the upper inner that bottom is positioned at shell (22) and middle part and shell (22) is connected, between the bottom in mandrel (21) outside and middle part, being provided with shoulder and bottom wall thickness is 1/3~1/2 of middle part wall thickness, lower end is connected with pipe close (25) by screw thread, disk spring group (24) is socketed on mandrel (21) bottom between pipe close (25) and shoulder, one group of joint ring (23) is positioned between mandrel (21) middle part and shell (22), another group joint ring (23) is positioned between pipe close (25) and shell (22) and with pipe close (25) and mandrel (21) and jointly forms piston, shell (22) lower end is provided with screw thread,
In the time that waterpower pressurization assembly (2) is positioned at the upper end of drilling rod (7), shell (22) lower end and drilling rod (7) upper end are threaded connection;
In the time that waterpower pressurization assembly (2) is positioned at the lower end of drilling rod (7), mandrel (21) upper end and drilling rod (7) lower end are threaded connection.
10. according to a kind of impact type helicoid hydraulic motor described in claim 3 or 4, it is characterized in that, shell (22), joint ring (23) and disk spring group (24) that described waterpower pressurization assembly (2) mainly communicates by the mandrel (21) of hollow, up and down form, described mandrel (21) is positioned at shell (22) bottom, mandrel (21) lower end is provided with screw thread, the inner side that top and middle part are all positioned at shell (22) and middle part and are arranged at the shoulder of shell (22) lower end is connected, the wall thickness that is provided with shoulder and top between the top in mandrel (21) outside and middle part is greater than the wall thickness at middle part, disk spring group (24) is socketed on mandrel (21) middle part between the shoulder of mandrel (21) and the shoulder of shell (22) lower end, one group of joint ring (23) is positioned between mandrel (21) top and shell (22) and with mandrel (21) and forms piston, another group joint ring (23) is positioned between the shoulder and mandrel (21) of shell (22) lower end, shell (22) upper end is provided with screw thread,
In the time that waterpower pressurization assembly (2) is positioned at the upper end of by-pass valve assembly (1), mandrel (21) lower end and by-pass valve assembly (1) upper end are threaded connection;
In the time that waterpower pressurization assembly (2) is positioned between by-pass valve assembly (1) and motor assembly (3), shell (22) upper end and by-pass valve assembly (1) lower end are threaded connection, and mandrel (21) lower end and motor assembly (3) upper end are threaded connection.
11. a kind of impact type helicoid hydraulic motors according to claim 5, is characterized in that, shell (22), joint ring (23) and disk spring group (24) that described waterpower pressurization assembly (2) mainly communicates by the mandrel (21) of hollow, up and down form, described mandrel (21) is positioned at shell (22) bottom, mandrel (21) lower end is provided with screw thread, the inner side that top and middle part are all positioned at shell (22) and middle part and are arranged at the shoulder of shell (22) lower end is connected, the wall thickness that is provided with shoulder and top between the top in mandrel (21) outside and middle part is greater than the wall thickness at middle part, disk spring group (24) is socketed on mandrel (21) middle part between the shoulder of mandrel (21) and the shoulder of shell (22) lower end, one group of joint ring (23) is positioned between mandrel (21) top and shell (22) and with mandrel (21) and forms piston, another group joint ring (23) is positioned between the shoulder and mandrel (21) of shell (22) lower end, shell (22) upper end is provided with screw thread,
In the time that waterpower pressurization assembly (2) connects successively, shell (22) upper end of waterpower pressurization assembly (2) and mandrel (21) lower end of superposed waterpower pressurization assembly (2) that are positioned at bottom are threaded connection.
12. according to a kind of impact type helicoid hydraulic motor described in claim 4 or 6, it is characterized in that, shell (22), joint ring (23) and disk spring group (24) that described waterpower pressurization assembly (2) mainly communicates by the mandrel (21) of hollow, up and down form, described mandrel (21) is positioned at shell (22) bottom, mandrel (21) lower end is provided with screw thread, the inner side that top and middle part are all positioned at shell (22) and middle part and are arranged at the shoulder of shell (22) lower end is connected, the wall thickness that is provided with shoulder and top between the top in mandrel (21) outside and middle part is greater than the wall thickness at middle part, disk spring group (24) is socketed on mandrel (21) middle part between the shoulder of mandrel (21) and the shoulder of shell (22) lower end, one group of joint ring (23) is positioned between mandrel (21) top and shell (22) and with mandrel (21) and forms piston, another group joint ring (23) is positioned between the shoulder and mandrel (21) of shell (22) lower end, shell (22) upper end is provided with screw thread,
In the time that waterpower pressurization assembly (2) is positioned at the upper end of drilling rod (7), mandrel (21) lower end and drilling rod (7) upper end are threaded connection;
In the time that waterpower pressurization assembly (2) is positioned at the lower end of drilling rod (7), shell (22) upper end and drilling rod (7) lower end are threaded connection.
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