CN202745686U - Impact screw drilling tool - Google Patents

Impact screw drilling tool Download PDF

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Publication number
CN202745686U
CN202745686U CN 201220406394 CN201220406394U CN202745686U CN 202745686 U CN202745686 U CN 202745686U CN 201220406394 CN201220406394 CN 201220406394 CN 201220406394 U CN201220406394 U CN 201220406394U CN 202745686 U CN202745686 U CN 202745686U
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assembly
shell
mandrel
waterpower
pass valve
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董学成
熊继有
魏小梅
王国华
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熊继有
魏小梅
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Abstract

The utility model discloses an impact screw drilling tool and belongs to well drilling technique. The impact screw drilling tool solves the problem that in an prior art impact force produced in an instant by a screw drilling tool causes damage to cutting teeth of a drill bit easily. The impact screw drilling tool comprises a bypass-valve assembly, a motor assembly, a cardan shaft assembly and a transmission shaft assembly which are connected in sequence, wherein the bypass-valve assembly is mainly composed of a valve body, a valve core, a spring and a sieve plate, the motor assembly is mainly composed of a stator shell body and a rotor, the cardan shaft assembly is mainly composed of a cardan shaft shell body and a cardan shaft, and the transmission shaft assembly is mainly composed of a transmission shaft shell body, a hollow transmission shaft, a thrust bearing pack and a radial bearing pack. A flow regulation assembly is arranged between the transmission shaft assembly and the cardan shaft assembly. Based on original performance of the screw drilling tool, the impact screw drilling tool produces soft impact force through the flow regulation assembly, so rock breaking efficiency of the drill bit is improved, drilling speed of machinery is improved, the service life is greatly prolonged, and the application range is widened by use of waterpower inflating assemblies at different positions.

Description

A kind of impact type helicoid hydraulic motor
Technical field
The utility model relates to drilling engineering hydraulic impacter and well dynamic field of tool, specifically, relates to a kind of impact type helicoid hydraulic motor.
Background technology
How improving bit speed is the technical barrier that present countries in the world are being studied, particularly, increase along with well depth, waterpower increases along the journey loss, shaft bottom drill bit available water can sharply descend, hydraulic drilling and clear rock ability weaken, and cause the problems such as the deep-well drilling speed is low, bit wear fast, sticking 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, the slide drilling difficulty, and the 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 the 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 a large amount of technical research and the field have been carried out, 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 simultaneously the high-frequency percussion stress from impactor, and under rotation and the synergy impacted 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 more than 30%, hole deviation obviously reduces its rate of penetration than common rotary drilling Speed improving, 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 the drilling process, on one side drilling tool rotates, on one side producing an axial impact force, impactor acts on drill bit, drill bit produces the impact force of an alternation to rock, reach the purpose of fast broken rock.
The imagination of oil rotary drilling technology starts from Europe, and the core of this technology is the hydraulic impacter instrument.
1867-1887 years: the hydraulic impacter drilling tool in succession occurred.
1887: the patent that Britain had once authorized novel drilling method for 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 and process.
The sixties: U.S. Pan Mei company improves the material and design of its hydraulic impacter through great efforts, and the bite type that matches with it, makes it to become better and approaching perfection day by day, and has fully shown advantage and the potentiality of hydraulical impact rotary drilling technology; Hungary has developed the 5 kind double acting hydraulical impact drilling tools of diameter at 48~160mm.
The seventies: Japan also begins to develop the hydraulical impact drilling tool, the hydraulic double-action churn drilling tools of Japanese thribble company development that more successful is.
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 that runs in the 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 the 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 obtains people's attention again 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 used in ultradeep well at oil drilling.The deep-well research institute of a university of Germany has done a large amount of emulation and performance test work since 1987 indoor to the churn drill well tool, is also stepping up to study the application of this technology in ultradeep well at present.
At present the impactor type developed of countries in the world is more, can be divided into by power mode difference surge, the forms such as pneumatic, electronic, gas-liquid mixed and mechanism.Most widely used at oil drilling or geologic prospect area research is to surge and pneumatic two kinds, wherein, hydraulic impacter be fluid power take 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 alive and throttle type), jetting type, jet absorption type according to the difference of structure.The primary structure of these impactors comprises mainly the changement that is made of parts such as piston, spring, seal, block stamps and the energy delivery mechanisms that mainly is made of parts such as hammering block, drill bits etc., and the commutation of hydraulic impacter action to be the valve member that relies on drilling fluid to drive changement realize.
China just began one's study as far back as 1958 and uses 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 surpasses megameter, has obtained good economic benefit, and drilling efficiency significantly improves, creep at hard formation especially, average rate of penetration improves 50%~100% than rotation drilling well drilling speed.
Since nineteen ninety-five, Dezhou oil drilling research institute by in recent years research and repeatedly practise, obtained 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 the well test, more than 1000 meter on drilling depth, rate of penetration on average improves 30%~50%, is up to 160%, first impactor is applied in 4000 meters dark oil drilling deep-wells, the life-span of impactor consumable accessory is enhanced.
Long celebrating Petroleum Authority drilling Process research has designed the CQS type positive interaction impactor that surges, in eight mouthfuls of shallow wells, test, verified that further the drilling well of spinning improves the superiority of rate of penetration in hard formation, but because the impactor internal construction of this kind 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 the development of new hydraulic impacter, and carried out test of many times in the Tarim Basin In Xinjiang piedmont tectonic belts, compares rate of penetration with rotary drilling and improved 20%~60%.
One of major reason that the impactor drilling technology can not extensively be promoted is that the impactor quality does not pass a test, and the life-span does not also reach the needed time, can't satisfy the needs of actual well drilled, and this technology is not yet carried out popularization and applied in decades.The field proves, two defectives that can't overcome of hydraulic impacter ubiquity: the one, the erosion of drilling fluid or solid phase particles wherein, so that the switch valve member can not normally be realized the action of stipulating, work undesired, do not work, and the valve member life-span is short, thereby has caused whole impactor unstable properties, and the life-span is short; The 2nd, vibration frequency and impact force change along with the variation of the factors such as drilling fluid displacement and pump pressure, it is a stochastic variable, this variation all is difficult to accomplish conform to actual conditions to drill bit design (or type selecting) or to finding the solution of crushing rock formation acting, and the rock fracture in dynamic indentation effect is undesirable.Air hammer is take 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 all are better than hydraulic impacter, use but only limit to air drilling, and the range of application limitation is too large.The alternate manner impactor can not be applied to oil drilling.
Chinese patent notice of authorization CN101581196B, January 11 2012 notice of authorization day, denomination of invention is the patent of " the screw drill transmission shaft assembly with impact function ", " a kind of screw drill transmission shaft assembly with impact function; it has power transmission shaft and ectosome; be provided with bidirectionally limited bearing between ectosome and the power transmission shaft; characteristics are; power transmission shaft is divided into uploads moving axis and lower drive shaft two parts; the ectosome corresponding to power transmission shaft also is divided into upper ectosome and lower ectosome two parts is disclosed, be movably equipped with annular rigid body impact sleeve and upper Qi Zhenzuo in the toroidal cavity between lower ectosome and lower drive shaft, annular rigid body impact sleeve and upper Qi Zhenzuo connect as one, be provided with spring on the 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 the lower drive shaft, open shake the seat and lower drive shaft between, be provided with between annular rigid body impact sleeve and the lower drive shaft and open vibrating device, the upper end of lower drive shaft is provided with the pressure transmission hole that communicates 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 has 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 the drill bit efficiency of breaking rock, improve the drilling machinery drilling speed, reduce the wellbore construction cost." impact force of producing 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 the impactor operating principle has seriously restricted further developing of this technology, limited 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 present impactor." the screw drill transmission shaft assembly with impact function " patent is to widen the range of application of helicoid hydraulic motor, opens up impactor research frontier, provide a kind of a new direction, but it still has certain deficiency, is necessary to further improve.
The utility model content
The purpose of this utility model is to provide a kind of impact type helicoid hydraulic motor, and helicoid hydraulic motor moment generation impact force makes easy damage of cutting teeth of drill bit cause short problem in application life in the solution prior art.
In order to address the above problem, the technical solution adopted in the utility model is as follows:
A kind of impact type helicoid hydraulic motor, comprise the by-pass valve assembly that connects successively, motor assembly, universal drive shaft assembly and driving-shaft assembly, wherein, by-pass valve assembly mainly is comprised of valve body, spool, spring, sieve plate, and motor assembly mainly is comprised of stator case and rotor, the universal drive shaft assembly mainly is comprised of universal shaft housing and universal drive shaft, and driving-shaft assembly mainly is made of power transmission shaft, thrust bearings and the journal bearing group of transmission shaft shell, hollow; Be provided with the Flow-rate adjustment assembly between described driving-shaft assembly and the universal drive shaft assembly, the upper end of this Flow-rate adjustment assembly is connected with universal drive shaft, and the lower end is connected with power transmission shaft.
Further, described Flow-rate adjustment assembly mainly is comprised of with the flow regulating tube that is connected with power transmission shaft the water conservancy diversion water cap that is connected with universal drive 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, the 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, guarantee 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, such as sine curve or plan sine curve, wherein intend sine curve finger-type shape and be similar to sinusoidal curve, as a kind of preferred, the concavo-convex end face of described flow regulating tube is sinusoidal end face, and projection that should the sine end face after namely flow regulating tube launches is the 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 the broaden application scope, the drilling rod of hollow is set between described by-pass valve assembly and the waterpower pressurization assembly, perhaps, the waterpower pressurization assembly that connects successively more than two is set in the upper end of by-pass valve assembly, and between by-pass valve assembly and the 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 the structure of its difference correspondence is as follows:
The piston form that moves upward
This waterpower pressurization assembly mainly is comprised of the mandrel of hollow, the shell that communicates up and down, joint ring, disk spring group and pipe close; Described mandrel upper end is provided with screw thread, the upper inner that the bottom is positioned at shell and middle part and shell is connected, be provided with shoulder between the bottom in the mandrel outside and the middle part and the bottom wall thickness is 1/3~1/2 of middle part wall thickness, the lower end is connected with pipe close by screw thread, the disk spring group is socketed on the mandrel bottom between pipe close and the shoulder, one group of joint ring is between mandrel middle part and shell, another group joint ring consists of piston jointly between pipe close and shell and with pipe close and mandrel, the shell lower end is provided with screw thread;
When waterpower pressurization assembly was positioned at the upper end of by-pass valve assembly, shell lower end and by-pass valve assembly upper end were threaded connection;
When waterpower pressurization assembly was between by-pass valve assembly and motor assembly, the mandrel upper end was threaded connection with the by-pass valve assembly lower end, and shell lower end and motor assembly upper end are threaded connection;
When waterpower pressurization assembly connected successively, the shell lower end of mandrel upper end and superposed waterpower pressurization assembly that is positioned at the waterpower pressurization assembly of bottom was threaded connection;
When waterpower pressurization assembly was positioned at the upper end of drilling rod, shell lower end and drilling rod upper end were threaded connection;
When waterpower pressurization assembly was positioned at the lower end of drilling rod, the mandrel upper end was threaded connection with the drilling rod lower end;
Piston moves downward form
This waterpower pressurization assembly mainly is comprised of the mandrel of hollow, the shell that communicates up and down, joint ring and disk spring group; Described mandrel is positioned at outer casing underpart, the mandrel lower end is provided with screw thread, the inboard that top and middle part all are positioned at shell and middle part and are arranged at the shoulder of shell lower end is connected, be provided with the wall thickness on shoulder and top greater than the wall thickness at middle part between the top in the mandrel outside and the middle part, the disk spring group is socketed on the mandrel middle part between the shoulder of the shoulder of mandrel and shell lower end, one group of joint ring consists of piston between mandrel top and shell and with mandrel, another group joint ring is between the shoulder and mandrel of shell lower end, and the shell upper end is provided with screw thread;
When waterpower pressurization assembly was positioned at the upper end of by-pass valve assembly, mandrel lower end and by-pass valve assembly upper end were threaded connection;
When waterpower pressurization assembly was between by-pass valve assembly and motor assembly, the shell upper end was threaded connection with the by-pass valve assembly lower end, and mandrel lower end and motor assembly upper end are threaded connection;
When waterpower pressurization assembly connected successively, the mandrel lower end of shell upper end and superposed waterpower pressurization assembly that is positioned at the waterpower pressurization assembly of bottom was threaded connection;
When waterpower pressurization assembly was positioned at the upper end of drilling rod, mandrel lower end and drilling rod upper end were threaded connection;
When waterpower pressurization assembly was positioned at the lower end of drilling rod, the shell upper end was threaded connection with the drilling rod lower end.
Compared with prior art, the beneficial effects of the utility model are as follows:
(1) the utility model design is ingenious, and it is convenient to realize, is fit to apply.
(2) calculating is learnt according to hydraulics, at certain drilling depth, near the nearly drill bit valve is installed, when closing with certain speed, because the effect of inertia of drilling fluid, the above interior hydraulic pressure of drilling tool of valve can increase gradually, can produce the hydraulic pressure impact force that is equivalent to several tons of weight pressure, therefore the utility model design discharge between motor assembly and driving-shaft assembly is regulated assembly, be used for the mud flow rate in the control helicoid hydraulic motor, with the hydraulic pressure that utilizes its generation the drill bit that power transmission shaft and bottom connect is produced impact force, thereby realized 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, improved the efficient of well drilling and rock crushing.
(3) the utility model 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 the pod apertures place is along the sine curve shape or intend the cyclically-varying of sine curve shape, flow in the 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, avoided impact force moment generation can destroy the problem of Cutter, the application life of having improved helicoid hydraulic motor.
(4) need not to use seal in the Flow-rate adjustment assembly of the present utility model, flow is controlled in relative motion by flow regulating tube and water conservancy diversion water cap, guaranteed the continuity of athletic performance, thereby increased the reliability of helicoid hydraulic motor integral body, and then improved application life of the present utility model, solved an existing impactor short difficult problem in application life.
(5) the utility model both provided rotary power for downhole drill bit, provide impact the pressure of the drill for it again, the two technology of spinning that combines has significantly improved efficiency of breaking rock, thereby prolonged drilling life of bit, improved rate of penetration, on the basis that guarantees original performance, increased the function of existing helicoid hydraulic motor, and widened the range of application of helicoid hydraulic motor.
(6) the utility model is under the effect of Flow-rate adjustment assembly, the mud flow rate of motor of flowing through is the sine curve shape or intends the consecutive periods variation of sine curve shape, and the output torque of helicoid hydraulic motor is directly proportional with 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 prolonged drilling life of bit, increased rate of penetration.
(7) realize spinning drilling well in order to cooperate Flow-rate adjustment assembly regulating pondage to produce soft continuously surge pressure, the utility model arranges waterpower pressurization assembly at an upper portion thereof, to be converted to thrust because of the supercharging ripple that water attack produces, further improve the impact force of whole helicoid hydraulic motor.
(8) the utility model assembly that not only waterpower can be pressurizeed is installed on by-pass valve assembly upper end or different position, lower end, can also increase as required drilling rod or increase a plurality of waterpower pressurization assemblies, satisfied 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 widened range of application of the present utility model, used for the popularization of the drilling technology that spins and lay a good foundation.
(9) the utility model carries out soft improvement by the impact force that drilling fluid is produced water attack formation in downhole tool, promoted helicoid hydraulic motor to high pulling torque, long-life, multifunctional direction development, open up hydraulic impacter research frontier, the drilling technology popularization of will spinning is used the new stage of having pushed to, promoted to spin the brokenly deep structure research of rock principle has epoch-making meaning to drilling technology.
Description of drawings
Fig. 1 is the deployed configuration schematic diagram of flow regulating tube in the utility model.
Fig. 2 is the deployed configuration schematic diagram of Flow-rate adjustment assembly in the utility model.
Fig. 3 is the structural representation of the utility model-embodiment 1.
Fig. 4 is the move upward structural representation of waterpower pressurization assembly of form of the piston in the utility model.
Fig. 5 is the structural representation of the utility model-embodiment 2.
Fig. 6 is the structural representation of the utility model-embodiment 3.
Fig. 7 is the structural representation of the utility model-embodiment 4.
Fig. 8 is the structural representation of the utility model-embodiment 5.
Fig. 9 is the structural representation that the piston in the utility model moves downward the waterpower pressurization assembly of form.
In the above-mentioned accompanying drawing, the corresponding name of Reference numeral is called:
The 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;
The 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.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is elaborated, embodiment of the present utility model includes but not limited to the following example.
Embodiment 1
As shown in Figure 1, this impact type helicoid hydraulic motor, comprise the by-pass valve assembly 1 that connects successively, motor assembly 3, universal drive shaft assembly 4 and driving-shaft assembly 6, wherein, by-pass valve assembly mainly is comprised of valve body, spool, spring, sieve plate, motor assembly mainly is comprised of stator case and rotor, and the universal drive shaft assembly mainly is comprised of universal shaft housing and universal drive shaft, and driving-shaft assembly mainly is made of power transmission shaft, thrust bearings and the journal bearing group of transmission shaft shell, hollow; Be provided with Flow-rate adjustment assembly 5 between described driving-shaft assembly 6 and the universal drive shaft assembly 4, the upper end of this Flow-rate adjustment assembly is connected with universal drive shaft, and the lower end is connected with power transmission shaft.
As shown in Figures 2 and 3, this Flow-rate adjustment assembly 5 mainly is comprised of with the flow regulating tube 53 that is connected with power transmission shaft the water conservancy diversion water cap 51 that is connected with universal drive 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, the 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, guarantee 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 uneven whole end face of this of flow regulating tube is periodically variable curve shape, sine curve or intend sine curve for example, wherein intend sine curve finger-type shape and be similar to sinusoidal curve, as a kind of preferred, this uneven end face is sinusoidal end face, and projection that should the sine end face after namely flow regulating tube launches is the sine curve shape.
When 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 will be through the mud flow rate of pod apertures the cyclically-varying of sine curve shape, and then make in the helicoid hydraulic motor and generation water attack in the above drilling tool, the drill bit that causes the helicoid hydraulic motor lower end to connect produces the cyclically-varying that is the sine curve shape to the pressure of the drill that the shaft bottom produces, make simultaneously the also generating period variation of moment of torsion of helicoid hydraulic motor output, 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 namely 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 improved the application life of helicoid hydraulic motor.
Embodiment 2
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 the motor assembly 3 waterpower pressurization assembly 2, this waterpower pressurization assembly is the piston form that moves upward, and mainly is comprised of the mandrel 21 of hollow, the shell 22 that communicates up and down, joint ring 23, disk spring group 24 and pipe close 25; Described mandrel upper end is provided with screw thread and the by-pass valve assembly lower end is threaded connection, the upper inner that the bottom is positioned at shell and middle part and shell is connected, be provided with shoulder between the bottom in the mandrel outside and the middle part and the bottom wall thickness is 1/3~1/2 of middle part wall thickness, the lower end is connected with pipe close by screw thread, the disk spring group is socketed on the mandrel bottom between pipe close and the shoulder, one group of joint ring is between mandrel middle part and shell, another group joint ring consists of with it piston between pipe close and shell, the shell lower end is provided with screw thread and the motor assembly upper end is threaded connection.
The Flow-rate adjustment assembly changes the flow in the helicoid hydraulic motor, causes water attack supercharging or water attack step-down, and the water attack supercharging ripple that causes thus or water attack step-down ripple are delivered to waterpower pressurization assembly.When the casing internal pressure of waterpower pressurization assembly increased, the pressure-acting of drilling fluid was in piston end surface, and the pushing piston opposite shell moves upward, and compresses dish-shaped groups of springs, cooperates with flow regulating tube simultaneously, jointly increases the pressure of the drill; When the casing internal pressure of waterpower pressurization assembly reduced, the disk spring group drove piston and resets gradually, and actuating pressure fades away, and impact also reduces gradually on the pressure of the drill.Obviously, the pressure that waterpower pressurization assembly produces is consistent with the Water Hammer direction, has strengthened the impact effect of impact type screw rod.And when helicoid hydraulic motor makes mud flow rate be the cyclically-varying of sine curve shape, piston is with respect to the shell back and forth movement, thereby increased the amplitude that the 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, prolonged drilling life of bit, increased rate of penetration.
Embodiment 3
As shown in Figure 6, the difference of the present embodiment and embodiment 2 only is 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 used for the darker drilling well of the degree of depth, because the position of waterpower pressurization assembly is higher, can reduce destroyed rock stratum to the impact of its generation, and increase the impact force that the drilling fluid in the helicoid hydraulic motor produces, and then the raising rock breaking efficiency, increase the service life.
Embodiment 4
As shown in Figure 7, the difference of the present embodiment and embodiment 3 only is also to be provided with between by-pass valve assembly and the waterpower pressurization assembly 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 used for the darker drilling well of the degree of depth, because the position of waterpower pressurization assembly is higher, has reduced destroyed rock stratum to the impact of its generation on the one hand, has increased on the other hand the impact force that the drilling fluid in the helicoid hydraulic motor produces, thereby the raising rock breaking efficiency increases the service life.
Embodiment 5
As shown in Figure 8, the difference of the present embodiment and embodiment 3 is that waterpower pressurization assembly upper end also is provided with drilling rod 7 and another waterpower pressurization assembly 2 successively, the mandrel upper end that is positioned at the waterpower pressurization assembly of bottom is threaded connection with the drilling rod lower end, the drilling rod upper end is threaded connection with the shell lower end of superposed waterpower pressurization assembly, 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 improved widely impact force, more strengthen the impact effect of impact type screw rod, and more improved rock breaking efficiency, be particularly useful for the comparatively hard rock stratum, stratum of part.
Embodiment 6
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, mainly is comprised of the mandrel 21 of hollow, the shell 22 that communicates up and down, joint ring 23 and disk spring group 24; Described mandrel is positioned at outer casing underpart, the mandrel lower end is provided with screw thread and the motor assembly upper end is threaded connection, the inboard that top and middle part all are positioned at shell and middle part and are arranged at the shoulder of shell lower end is connected, be provided with the wall thickness on shoulder and top greater than the wall thickness at middle part between the top in the mandrel outside and the middle part, the disk spring group is socketed on the mandrel middle part between the shoulder of the shoulder of mandrel and shell lower end, one group of joint ring consists of with it piston between mandrel top and shell, another group joint ring is between the shoulder and mandrel of shell lower end, and the shell upper end is provided with screw thread and the by-pass valve assembly lower end is threaded connection.
When the casing internal pressure of waterpower pressurization assembly increased, the pressure-acting of drilling fluid was in piston end surface, and the pushing piston opposite shell moves downward, and compresses dish-shaped groups of springs, cooperates with flow regulating tube simultaneously, jointly increases the pressure of the drill; When the casing internal pressure of waterpower pressurization assembly reduced, the disk spring group drove piston and resets gradually, and actuating pressure fades away, and impact also reduces gradually on the pressure of the drill.Obviously, the pressure that waterpower pressurization assembly produces is consistent with the Water Hammer direction, has strengthened the impact effect of impact type screw rod.And when helicoid hydraulic motor makes mud flow rate be the cyclically-varying of sine curve shape, piston is with respect to the shell back and forth movement, thereby increased the amplitude that the helicoid hydraulic motor impact force changes, produce thus the concussion displacement, and then the pressure of the drill is impacted in generation, improve rock breaking efficiency, prolonged 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 when creeping into, the pressure on the mandrel passes to drill bit by drilling tool, can produce the pressure of the drill of vibration, but the concussion displacement that produces is remarkable not.
According to above-described embodiment; just can realize well the utility model; but above-described embodiment only is to realize several embodiments of the present utility model; 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, perhaps compression wave passes to waterpower pressurization assembly, and other form of the principle of enhancing the pressure of the drill variation effect is all within the utility model protection domain.

Claims (9)

1. impact type helicoid hydraulic motor, comprise the by-pass valve assembly (1) that connects 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 forms, motor assembly (3) mainly is comprised of stator case and rotor, universal drive shaft assembly (4) mainly is comprised 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 consist of, it is characterized in that, be provided with Flow-rate adjustment assembly (5) between described driving-shaft assembly (6) and the universal drive shaft assembly (4), the upper end of this Flow-rate adjustment assembly (5) is connected with universal drive shaft, and the lower end is connected with power transmission shaft.
2. a kind of impact type helicoid hydraulic motor according to claim 1, it is characterized in that, described Flow-rate adjustment assembly (5) mainly is comprised of the water conservancy diversion water cap (51) that is connected with universal drive shaft and the flow regulating tube that is connected with power transmission shaft (53), wherein, water conservancy diversion water cap (51) is positioned at flow regulating tube (53) and is flexibly connected with it; Flow regulating tube (53) one end faces are burnishing surface, the 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).
3. a kind of impact type helicoid hydraulic motor according to claim 2 is characterized in that, the concavo-convex end face of described flow regulating tube (53) is sinusoidal end face.
4. a kind of impact type helicoid hydraulic motor according to claim 3 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).
5. a kind of impact type helicoid hydraulic motor according to claim 4 is characterized in that, also is provided with the drilling rod (7) of hollow between described by-pass valve assembly (1) and the waterpower pressurization assembly (2).
6. a kind of impact type helicoid hydraulic motor according to claim 4 is characterized in that, the upper end of described by-pass valve assembly (1) is provided with the waterpower pressurization assembly (2) that connects successively more than two.
7. a kind of impact type helicoid hydraulic motor according to claim 6 is characterized in that, described by-pass valve assembly (1) and waterpower are pressurizeed between the assembly (2) or also is provided with the drilling rod (7) of hollow between two waterpower pressurization assemblies (2).
8. the described a kind of impact type helicoid hydraulic motor of any one according to claim 4~7, it is characterized in that, described waterpower pressurization assembly (2) mainly is comprised of the mandrel (21) of hollow, the shell (22) that communicates up and down, joint ring (23), disk spring group (24) and pipe close (25); Described mandrel (21) upper end is provided with screw thread, the upper inner that the bottom is positioned at shell (22) and middle part and shell (22) is connected, be provided with shoulder between the bottom in mandrel (21) outside and the middle part and the bottom wall thickness is 1/3~1/2 of middle part wall thickness, the 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 the shoulder, one group of joint ring (23) is positioned between mandrel (21) middle part and the shell (22), another group joint ring (23) is positioned between pipe close (25) and the shell (22) and with pipe close (25) and mandrel (21) and jointly consists of piston, and shell (22) lower end is provided with screw thread;
When waterpower pressurization assembly (2) was positioned at the upper end of by-pass valve assembly (1), shell (22) lower end and by-pass valve assembly (1) upper end were threaded connection;
When waterpower pressurization assembly (2) was positioned between by-pass valve assembly (1) and the motor assembly (3), mandrel (21) upper end was threaded connection with by-pass valve assembly (1) lower end, and shell (22) lower end and motor assembly (3) upper end are threaded connection;
When waterpower pressurization assembly (2) when connecting successively, shell (22) lower end of mandrel (21) upper end and superposed waterpower pressurization assembly (2) that is positioned at the waterpower pressurization assembly (2) of bottom is threaded connection;
When waterpower pressurization assembly (2) was positioned at the upper end of drilling rod (7), shell (22) lower end and drilling rod (7) upper end were threaded connection;
When waterpower pressurization assembly (2) was positioned at the lower end of drilling rod (7), mandrel (21) upper end was threaded connection with drilling rod (7) lower end.
9. the described a kind of impact type helicoid hydraulic motor of any one according to claim 4~7, it is characterized in that, described waterpower pressurization assembly (2) mainly is comprised of the mandrel (21) of hollow, the shell (22) that communicates up and down, joint ring (23) and disk spring group (24); Described mandrel (21) is positioned at shell (22) bottom, mandrel (21) lower end is provided with screw thread, the inboard that top and middle part all are positioned at shell (22) and middle part and are arranged at the shoulder of shell (22) lower end is connected, be provided with the wall thickness on shoulder and top greater than the wall thickness at middle part between the top in mandrel (21) outside and the middle part, disk spring group (24) is socketed on mandrel (21) middle part between the shoulder of the shoulder of mandrel (21) and shell (22) lower end, one group of joint ring (23) is positioned between mandrel (21) top and the shell (22) and with mandrel (21) and consists of piston, another group joint ring (23) is positioned between the shoulder and mandrel (21) of shell (22) lower end, and shell (22) upper end is provided with screw thread;
When waterpower pressurization assembly (2) was positioned at the upper end of by-pass valve assembly (1), mandrel (21) lower end and by-pass valve assembly (1) upper end were threaded connection;
When waterpower pressurization assembly (2) was positioned between by-pass valve assembly (1) and the motor assembly (3), shell (22) upper end was threaded connection with by-pass valve assembly (1) lower end, and mandrel (21) lower end and motor assembly (3) upper end are threaded connection;
When waterpower pressurization assembly (2) when connecting successively, mandrel (21) lower end of shell (22) upper end and superposed waterpower pressurization assembly (2) that is positioned at the waterpower pressurization assembly (2) of bottom is threaded connection;
When waterpower pressurization assembly (2) was positioned at the upper end of drilling rod (7), mandrel (21) lower end and drilling rod (7) upper end were threaded connection;
When waterpower pressurization assembly (2) was positioned at the lower end of drilling rod (7), shell (22) upper end was threaded connection with drilling rod (7) lower end.
CN 201220406394 2012-08-16 2012-08-16 Impact screw drilling tool Withdrawn - After Issue CN202745686U (en)

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CN 201220406394 CN202745686U (en) 2012-08-16 2012-08-16 Impact screw drilling tool

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102777122A (en) * 2012-08-16 2012-11-14 熊继有 Impact screw drilling tool
CN106522829A (en) * 2016-11-27 2017-03-22 天津市高原瑞丰工贸有限公司 Churn screw drill for drilling
CN106639866A (en) * 2016-12-30 2017-05-10 成都海猛石油机械有限公司 Novel rotary percussion drilling tool
CN107255016A (en) * 2017-07-25 2017-10-17 盐城市荣嘉机械制造有限公司 One kind can adjust hollow shunting screw drill
CN108204219A (en) * 2018-02-02 2018-06-26 西南石油大学 A kind of activation drilling tool by-pass valve infinitely
CN109872623A (en) * 2019-03-02 2019-06-11 吉林省农业科学院 A kind of potato field experiment Sign Board

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102777122A (en) * 2012-08-16 2012-11-14 熊继有 Impact screw drilling tool
CN102777122B (en) * 2012-08-16 2014-07-09 熊继有 Impact screw drilling tool
CN106522829A (en) * 2016-11-27 2017-03-22 天津市高原瑞丰工贸有限公司 Churn screw drill for drilling
CN106639866A (en) * 2016-12-30 2017-05-10 成都海猛石油机械有限公司 Novel rotary percussion drilling tool
CN107255016A (en) * 2017-07-25 2017-10-17 盐城市荣嘉机械制造有限公司 One kind can adjust hollow shunting screw drill
CN107255016B (en) * 2017-07-25 2019-12-17 盐城市荣嘉机械制造有限公司 Adjustable cavity reposition of redundant personnel screw drill
CN108204219A (en) * 2018-02-02 2018-06-26 西南石油大学 A kind of activation drilling tool by-pass valve infinitely
CN109872623A (en) * 2019-03-02 2019-06-11 吉林省农业科学院 A kind of potato field experiment Sign Board

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