CN204326969U - Method of longitudinal vibration of drilling string is converted into the device of drill bit torsional pulse - Google Patents

Method of longitudinal vibration of drilling string is converted into the device of drill bit torsional pulse Download PDF

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Publication number
CN204326969U
CN204326969U CN201420776488.2U CN201420776488U CN204326969U CN 204326969 U CN204326969 U CN 204326969U CN 201420776488 U CN201420776488 U CN 201420776488U CN 204326969 U CN204326969 U CN 204326969U
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China
Prior art keywords
spline
shell
spring
vibration
thrust bearing
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CN201420776488.2U
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Chinese (zh)
Inventor
管志川
呼怀刚
刘永旺
张会增
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China University of Petroleum Beijing CUPB
China University of Petroleum UPC East China
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China University of Petroleum UPC East China
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Abstract

The utility model is device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse, and extensional vibration assembly comprises biography and to shake axle, and pass the axle that shakes and be connected with stop collar and flower is healthy and strong, the bottom passing the axle that shakes is connected with vibration generator, vibration generator is provided with and rushes ear; Reset torsion pass assembly includes spline shell, spring, transit joint, impactor shell, and top, the bottom of spring contact respectively at the bottom of stop collar and the top of transit joint; Torsion occurs to transmit assembly and includes jump bit, and jump bit is arranged in drill headstock, is provided with helicla flute in jump bit, rushes ear and matches with helicla flute; Be provided with internal spline in spline shell, spline body matches with internal spline; The lower end of impactor shell is provided with housing spline, and the lower end of drill headstock is provided with pedestal spline, and housing spline and pedestal spline match.The method of longitudinal vibration of drilling string be harmful in drilling process can be converted into the circumferential high-frequency torsional pulse vibration acting on drill bit by the utility model, improves rate of penetration.

Description

Method of longitudinal vibration of drilling string is converted into the device of drill bit torsional pulse
Technical field
The utility model belongs to drilling engineering field, particularly relates to a kind of device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse be applied in oil, Natural Gas Drilling Operation.
Background technology
The requirement of modern energy Development Strategy to bit speed and quality is more and more higher.When creeping into deep and there is the stratum of high abrasive, rely on change efficiency of breaking rock, save main force's drill bit that the trip time improves drilling efficiency---there is serious " stick-slip " (stick-slip) oscillation phenomenon when PDC drill bit creeps into, this phenomenon make drill string matching component and the combination stressed operating mode of downhole tool severe, fatigue life is low, thus restriction even hinders deep-well, the further developing of ultradeep well.
Around in drilling process, the problem that the drilling tool failure caused due to stick-slip phenomenon and rate of penetration decline, shown by on-the-spot application and research both at home and abroad, can the crash rate of drill bit be reduced by periodically applying small size high-frequency torsional pulse on drill bit and improve rate of penetration, devise multiple torsion impact device thus to be embodied as the object that PDC drill bit applies circumferential high-frequency percussion load, mainly comprise: U.S.'s Aunar draws the torsion impact device (patent No.: US6742609B2) of company, the torsional pulse system (patent No.: US7096980B2) of Halliburton Energy Serv Inc. of the U.S., torsional impact drilling tool (the application number: 200910058083.9) of Southwest Petrol University, 201010511421.2) and the jetting type torsional impact drilling tool (application number: 201010511421.2) etc. of China Petroleum Univ. (East-China) SINOPEC's triumph Engineering Co., Ltd drilling technology is graduate turns round the instrument of punching (application number:.Although the configurations of these devices, there is common feature: the work capacity of torsion impact derives from drilling circulation medium.
Practice shows: along with the increase of well depth, drilling circulation medium pressure consumption increases, and when well depth is very large, may occur that circulatory mediator only can meet the requirement of migrating rock cuttings with circulation, said apparatus duty can be greatly affected, and occurring most probably normally working even affects the possibility that drillng operation carries out; When drilling circulation medium is the larger medium of the compressible coefficient such as air or aerated mud, said apparatus is all difficult to normal work.Therefore, research and development utilize the down-hole torsion impact generating means of new forms of energy very meaningful for deep-well, ultradeep well torsion impact drilling speed.
The oscillation phenomenon of drill string is the complex situations often run in straight well drilling well, and extensional vibration endangers the most obvious, generation vibration mode the most frequently in drillstring vibrations, it not only has influence on the efficiency of wellbore construction, also can cause the accidents such as the rupture failure of drill string, have impact on the process of drillng operation.The vibration alleviating drill string its meaning of extensional vibration especially in straight well just becomes and can not be ignored.Drive down-hole torsion impact generating means new forms of energy if this for method of longitudinal vibration of drilling string harmful energy can be converted into, improve bit speed all can have positive meaning for alleviating the loss caused due to drillstring vibrations.
Utility model content
The technical problems to be solved in the utility model is, a kind of device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse is provided, by the inner recurring structure of device, the method of longitudinal vibration of drilling string be harmful in drilling process is converted into the circumferential high-frequency torsional pulse vibration acting on drill bit, thus improves rate of penetration.
In order to solve the problems of the technologies described above, the utility model provides a kind of device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse, includes extensional vibration assembly, reset torsion pass assembly and torsion and occurs to transmit assembly;
Extensional vibration assembly comprises biography and to shake axle, and the described biography axle that shakes is connected with stop collar and flower is healthy and strong, and the shake bottom of axle of described biography is connected with vibration generator, described vibration generator is provided with and rushes ear;
Described reset torsion pass assembly includes spline shell, spring, transit joint, impactor shell, and the top of described spring contacts with the bottom of stop collar, and the bottom of described spring contacts with the top of transit joint;
Described torsion occurs to transmit assembly and includes jump bit, and described jump bit is arranged in drill headstock, is provided with helicla flute in described jump bit, and the ear that rushes of described vibration generator matches with the helicla flute of jump bit;
Be provided with internal spline in described spline shell, spline body matches with internal spline;
The lower end of described impactor shell is provided with housing spline, and the lower end of described drill headstock is provided with pedestal spline, and housing spline and pedestal spline match.
Further, described reset torsion pass assembly also includes gland and spring shell;
The top of described spline shell is provided with gland, and the external diameter of described spring shell is identical with the external diameter on the face of cylinder of linking closely; The top of described spring shell connects with spline outer casing screw, and the middle part of spring shell also has steam vent; The bottom of spring shell and the top thread connection of transit joint, the bottom of described transit joint connects with impactor outer casing screw; Described spring is arranged in spring shell, and described spring is back-moving spring, and top, the bottom of described back-moving spring are touched with the lower plane of stop collar, the upper flat face of transit joint respectively.
Further, there is to transmit assembly and also to include under thrust bearing stop collar, upper thrust bearing thrust bearing and anti-lost piece in described torsion;
Described impactor shell and drill headstock fix and form cavity in inside, and the inside of described cavity is followed successively by thrust bearing stop collar, upper thrust bearing, jump bit and lower thrust bearing from top to bottom.
Further, described impactor shell is provided with four anti-lost grooves of housing and four bolts hole;
Described drill headstock is provided with four anti-lost grooves of pedestal, and anti-lost piece can be compressed in the anti-lost groove of pedestal, be provided with little spring and be connected with anti-lost piece in the anti-lost groove of described pedestal;
The anti-lost groove of pedestal move to the anti-lost groove place of housing form cavity time, anti-lost piece is also pushed in the anti-lost groove of housing by little spring release.
Further, the top of described thrust bearing positioning sleeve holds out against the shaft shoulder of transit joint, and the bottom of thrust bearing positioning sleeve compresses upper thrust bearing.
Further, the outer upper ends of vibration generator is provided with rushes ear, and the outside lower end of vibration generator is provided with seal groove, and the upper surface rushing ear is greater than the height of jump bit to the length of seal groove.
Further, the outer setting of described jump bit has tup, and described helicla flute is two left-handed helicla flutes, and described helicla flute is the slideway rushing ear.
Further, the height of described jump bit is identical with the stroke passing the axle that shakes, and spiral fluted helical angle is identical with the anglec of rotation of jump bit.
The beneficial effect that the utility model has is:
(1) achieve by the conversion of drill string axial vibration to drill bit circumference dither, and vibration frequency can need to regulate rotary speed to obtain according to scene, the moment of torsion of drill string so just can be made to keep basicly stable and balance, reduce the torsion concussion of drill string, extend the application life of the matching component such as drill bit, drill string;
(2) high-frequency torsional pulse that this device produces directly acts on PDC drill bit, greatly eliminates the stick-slip phenomenon of PDC drill bit, has both protected drill bit and turn improved rate of penetration;
(3) work capacity of this device derives from drillstring vibrations, and energy increases along with the increase of well depth, and device reduces the harm that method of longitudinal vibration of drilling string produces;
(4) circulation of work on drilling fluid of this device does not form impact, even if tool failures, creeps into operation and circulation of drilling fluid also can proceed;
(5) this device can be applicable to, among various drillng operation, comprising: under balance pressure drilling, air drilling and balanced drilling etc.;
(6) simple, the stable performance of this apparatus structure, use procedure can not bring additional risk for drillng operation.
Accompanying drawing explanation
Fig. 1 is device initial position figure method of longitudinal vibration of drilling string being converted into drill bit torsional pulse;
Fig. 2 is device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse, state diagram when bearing maximum lower impact force;
Fig. 3 is the Local map of Fig. 1;
Fig. 4 is the Local map of Fig. 2;
Fig. 5 passes the axle schematic diagram that shakes;
Fig. 6 is the A-A generalized section in Fig. 1;
Fig. 7 is the B-B generalized section in Fig. 1;
Fig. 8 is the E-E generalized section in Fig. 2;
Fig. 9 is the generalized section of jump bit;
Figure 10 is the top view of jump bit;
Figure 11 is the C-C generalized section in Fig. 1;
Figure 12 is the D-D generalized section in Fig. 1;
Figure 13 is the generalized section of vibration generator.
In figure: 1, biography is shaken axle, 101, to link closely the face of cylinder, 102, sliding sealing surface, 103, spline body, 104, spacing screw thread, 105, the spring inner support face of cylinder, 106, connecting thread, 2, gland, 3, spline chamber seal assembly, 4, spline shell, 5, stop collar, 6, spring shell, 7, spring, 8, spring cavity seal assembly, 9, transit joint, 10, parting seal, 11, impactor shell, 12, thrust bearing stop collar, 13, sealing ring, 14, upper thrust bearing, 15, vibration generator, 1501, rush ear, 1502, seal groove, 16, jump bit, 1601, tup, 1602, helicla flute, 17, lower thrust bearing, 18, vibration generator sealing ring, 19, drill headstock, 20, drill headstock sealing ring, 21, anti-lost piece, 22, housing spline, 23, pedestal spline, 24, little spring, 25, bolt hole, 26, positive shock surface, 27, anti-shock surface, 28, the anti-lost groove of housing, 29, the anti-lost groove of pedestal.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As Figure 1-4, the utility model provides a kind of device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse, includes extensional vibration assembly, reset torsion pass assembly and torsion and occurs to transmit assembly.
Extensional vibration assembly comprises biography and to shake axle 1, and the described biography axle 1 that shakes is connected with stop collar 5 and flower is healthy and strong 103, and the shake bottom of axle 1 of described biography is connected with vibration generator 15, described vibration generator 15 is provided with and rushes ear 1501.
Described reset torsion pass assembly includes spline shell 4, spring 7, transit joint 9, impactor shell 11, and the top of described spring 7 contacts with the bottom of stop collar 5, and the bottom of described spring 7 contacts with the top of transit joint 9.Pass the axle 1 that shakes and in the internal chamber of reset torsion pass assembly, can move axially certain distance, its distance moved up is by the restriction of stop collar 5, and its distance moved down compresses quantitative limitation by spring 7.
Described torsion occurs to transmit assembly and includes jump bit 16, and described jump bit 16 is arranged in drill headstock 19, is provided with helicla flute 1602 in described jump bit 16, and the ear 1501 that rushes of described vibration generator 15 matches with the helicla flute 1602 of jump bit 16.
Internal spline is provided with in described spline shell 4, spline body 103 matches with internal spline, the rotation torque passing the axle 1 that shakes is passed to reset torsion pass assembly, the lower end of described impactor shell 11 is provided with housing spline 22, the lower end of described drill headstock 19 is provided with pedestal spline 23, housing spline 22 and pedestal spline 23 match, and rotation torque are passed to drill headstock 19, act on drill bit further.
When drill string vibrates downwards, vibration generator 15 occurs to transmit assembly relative to reset torsion pass assembly and torsion and moves downward, because the ear 1501 that rushes on vibration generator 15 is arranged in helicla flute 1602 on jump bit 16, oppress jump bit helicla flute 1602 when vibration generator 15 drives to rush when ear 1501 moves downward, thus impel jump bit 16 to produce in limited space to turn clockwise.
When rushing ear 1501 and running to certain position, the now positive shock surface 26 Churn drill headstock 19 of jump bit 16, also produces the vibration of circumferential torsion impact while drill headstock 19 bears TORQ.
When drill string is under spring 7 acts on, when upwards vibrating, vibration generator 15 occurs to transmit assembly relative to reset torsion pass assembly and torsion and moves upward, the ear 1501 that rushes on vibration generator 15 impels jump bit 16 to produce in limited space to be rotated counterclockwise, the now anti-shock surface 27 Churn drill headstock 19 of jump bit 16.
By the periodic vibration up and down of drill string, achieve by the rotary motion of the jump bit 16 that moves up and down of vibration generator 15, thus generation torsional pulse, reach the stick-slip phenomenon alleviated when PDC drill bit creeps into high grinding stratum, alleviate the harm because method of longitudinal vibration of drilling string produces, improve rate of penetration.
As shown in Figure 5, the described biography axle 1 that shakes is provided with elongated circular hole along its axis direction, and this circular hole is used for drilling fluid overcurrent; Biography shakes axle 1 top with drill collar button, for connecting the drilling assembly on top; Described biography shake axle 1 outside by top to be followed successively by bottom the face of cylinder 101 of linking closely, sliding sealing surface 102, spline body 103, for connect the spacing screw thread 104 of stop collar, the spring inner support face of cylinder 105, for connecting the connecting thread 106 of vibration generator, in the present embodiment, in order to meet the intensity of instrument, described sliding sealing surface 102 is the chromium plating face of cylinder, and the diameter of sliding sealing surface 102 is less than the diameter on the face of cylinder 101 of linking closely; The tip diameter of spline body 103 is equal with sliding sealing surface 102 external diameter, and the root diameter of spline body 103 is greater than the large footpath of spacing screw thread 104; The path of spacing screw thread 104 is greater than the diameter on the spring inner support face of cylinder 105; The external diameter of connecting thread 106 is less than the diameter on the spring inner support face of cylinder 105.
As shown in Figure 1-2, described reset torsion pass assembly includes gland 2, spline shell 4, spring shell 6, spring 7, transit joint 9, impactor shell 11, gland 2 is arranged on the top of spline shell 4, and in the present embodiment, spline shell 4 and gland 2 are thread connection.
In the present embodiment, described spline shell 4 is cylindrical shell, and the top outside spline shell 4 is that gland connects external screw thread, middle part is the face of cylinder, bottom is that spring shell connects external screw thread; Top inside spline shell 4 is righting cylinder, bottom is internal spline, and the internal diameter of righting cylinder is slightly larger than the external diameter of sliding sealing surface 102;
As shown in Figure 6, internal spline matches with the spline body 103 passing the axle 1 that shakes, and forms spline lubrication sap cavity, and the rotation torque passing the axle 1 that shakes is passed to reset torsion pass assembly, and passing the axle 1 that shakes can slide up and down relative to spline shell 4; Have oil filler point in the middle part of spline shell 4, oil filler point is used for injecting lubricating fluid in spline lubrication sap cavity, installing oil filler point plug, flowing out for preventing lubricating fluid in oil filler point.
The top inner side of spline shell 4 is provided with spline chamber seal assembly 3, and spline chamber seal assembly 3 flows into annular space for preventing the lubrication oil in spline lubrication sap cavity.
The external diameter of gland 2 is equal with the external diameter on the face of cylinder 101 of linking closely, and the top of gland 2 has circular hole, and the diameter of this circular hole is slightly larger than the external diameter of sliding sealing surface 102, and this circular hole and sliding sealing surface 102 form the gap sealing and allow.
The inside sidewalls of gland 2 is provided with end cap screw thread, and gland 2 is connected with the external screw thread of spline shell 4 by end cap screw thread; Spline chamber seal assembly 3 can be pressed in spline shell 4 by gland 2, prevents the lubrication oil in spline lubrication sap cavity from being released by spline chamber seal assembly 3.
As shown in Figure 1-2, in the present embodiment, described spring shell 6 is cylindrical shell, and described spring 7 is arranged in spring shell 6, and the external diameter of described spring shell 6 is identical with the external diameter on the face of cylinder 101 of linking closely.
Top inside spring shell 6 is upper screw thread, middle part is spring outer support face, bottom is lower screw thread; The top of described spring shell 6 and spline shell 4 thread connection, the bottom of spring shell 6 and transit joint 9 thread connection, the internal diameter in spring outer support face is greater than spring diameter 2-6mm; Have steam vent in the middle part of spring shell 6, when injecting lubricating fluid in spline lubrication sap cavity, steam vent is used for the air of spline lubrication sap cavity inside to discharge, and install steam vent plug in steam vent, steam vent plug is used for preventing lubricating fluid from flowing out.
Described spring 7 is back-moving spring, and top, the bottom of described back-moving spring are touched with the lower plane of stop collar 5, the upper flat face of transit joint 9 respectively, and back-moving spring is used for the reset of device entirety; Spring 7 adopts the combination of helical spring and liquid spring or the combination of disk spring and liquid spring.
As shown in Figure 1-2, in the present embodiment, described transit joint 9 is cylindrical shell, top outside it is spring shell connecting thread, middle part is the joint face of cylinder, bottom is impactor shell connecting thread, inner side is joint inner cylinder face, the top of described transit joint 9 and spring shell 6 thread connection, the bottom of transit joint 9 and impactor shell 11 thread connection.
The diameter of joint inner cylinder face is slightly larger than the external diameter on the spring inner support face of cylinder 105, the diameter on the joint face of cylinder is equal with the face of cylinder 101 external diameter that links closely, the upper and lower two ends of joint inner cylinder face are respectively equipped with two seals groove, be provided with spring cavity seal assembly 8 in the seal groove of upper end, in the seal groove of lower end, be provided with parting seal 10.
As shown in Figure 1-2, the external diameter of stop collar 5 is slightly less than the internal diameter in spring shell 6 spring outer support face, the external diameter of stop collar 5 is greater than the diameter of spline shell 4 spline basic circle (i.e. circle at the bottom of spline tooth), in trip-out process, stop collar 5 provides power upwards for spline shell 4, and the bottom surface of stop collar 5 is the upper supporting surface of spring 7.
Described torsion occur to transmit assembly include thrust bearing stop collar 12, upper thrust bearing 14, jump bit 16, lower thrust bearing 17, drill headstock 19, anti-lost piece 21;
As Figure 1-4, in the present embodiment, described impactor shell 11 is cylindrical shell, and the external diameter of impactor shell 11 is equal with the face of cylinder 101 external diameter that links closely; Its top and transit joint 9 thread connection.As shown in Figure 8, uniform 4 the housing splines 22 of described impactor shell 11 lower end circumference, uniform 4 the pedestal splines 23 of drill headstock 19 lower end outside, housing spline 22 and pedestal spline 23 shaft shoulder positioning gap coordinate, for transmitting TORQ to drill bit, housing spline 22 was located by anti-lost piece 21 with coordinating of pedestal spline 23.
As shown in Figure 7,8, impactor shell 11 top circumference is provided with through hole, and for discharging the air in cavity when charging-up lubricant oil and charging-up lubricant oil, install through hole plug in through hole, through hole plug is used for preventing outflow of lubrication oil; Both impactor shell 11 and drill headstock 19 fix inner formation cavity later, are followed successively by thrust bearing stop collar 12, upper thrust bearing 14, jump bit 16 and lower thrust bearing 17 in cavity from top to bottom.
As Figure 1-4, the external diameter of described thrust bearing positioning sleeve 12 is slightly less than impactor shell 11 internal diameter, and its internal diameter is greater than the cylinder on the spring inner support face of cylinder 105; The top of described thrust bearing positioning sleeve 12 holds out against the shaft shoulder of transit joint 9, and the bottom of thrust bearing positioning sleeve 12 compresses upper thrust bearing 14, and thrust bearing stop collar 12 is for fixing upper thrust bearing 14.
As shown in Figure 7, described impactor shell 11 is provided with four anti-lost grooves 28 of housing and four bolts hole 25; Described drill headstock 19 is provided with four anti-lost grooves 29 of pedestal, and anti-lost piece 21 can be compressed in the anti-lost groove 29 of pedestal, be provided with little spring 24 and be connected with anti-lost piece 21 in the anti-lost groove of described pedestal 29; When the anti-lost groove of pedestal 29 moves to housing anti-lost groove 28 place formation cavity, little spring 24 discharges and pushes to anti-lost piece 21 in the anti-lost groove 28 of housing.When demounting tool, to be compressed to be positioned at the anti-lost groove 29 of pedestal completely by bolt hole 25 by anti-lost piece 21, impactor shell 11 and drill headstock 19 are axially staggered reaches the object of dismounting simultaneously.
As shown in Figure 9, the outer upper ends of vibration generator 15 is provided with rushes ear 1501, the outside lower end of vibration generator 15 is provided with seal groove, the upper surface rushing ear 1501 is greater than the height of jump bit 16, to ensure that vibration generator 15, drill headstock 19, impactor shell 11 and transit joint 9 form the seal of cavity to the length of seal groove.
As shown in Figure 10,11, the outer setting of described jump bit 16 has tup 1601, and the internal placement of described jump bit 16 has two left-handed helicla flutes 1602, and described helicla flute 1602 is for rushing the slideway of ear 1501.The height of described jump bit 16 is identical with the stroke passing the axle 1 that shakes, and the helical angle of helicla flute 1602 is identical with the anglec of rotation of jump bit 16.
Jump bit 16 is located in the cavity of thrust bearing 14, drill headstock 19 and lower thrust bearing 17 composition, and can rotate to an angle around central axis.
When device is installed, rush ear 1501 upper surface and to contact with upper thrust bearing 14 lower surface and with the upper end surface of jump bit 16 in same plane; During device work, only can the vibration generator 15 of axially-movable move up and down, vibration generator 15 upper punch ear 1501 is oppressed jump bit helicla flute 1602 and is impelled jump bit 16 to produce in limited space to rotate in a circumferential direction.
As shown in Figure 1,3, during device original state, ear 1501 upper surface that rushes of vibration generator 15 contacts with the upper surface of jump bit 16; As shown in Figure 2,4, device is when by maximum lower impact force, and it is parallel with the lower surface of jump bit 16 that vibration generator 15 rushes ear 1501 lower surface.
As Figure 1-4, described drill headstock 19 is placed in the inside of impactor shell 11, and drill headstock 19 inside is the hollow structure of upper and lower UNICOM, and the cavity corresponding to jump bit 16 profile is arranged at top, is provided with jump bit 16 and lower thrust bearing 17 in cavity from top to bottom; Drill headstock 19 top is equipped with thrust bearing 14, and lower thread connects drill bit; Upper thrust bearing 14 upper, drill headstock 19 under, form cavity after both are fixing, as shown in Figure 12,13, cavity inside has vibration generator 15 and jump bit 16 from inside to outside successively; Seal groove is arranged at drill headstock 19 bottom, is provided with drill headstock sealing ring 20 in seal groove, vibration generator 15 is provided with vibration generator sealing ring 18.
Its operating principle of the utility model is as follows:
As Figure 1-5, TORQ by passing the spline body 103 of axle 1 of shaking, spline shell 4 internal spline, spline shell 4, spring shell 6, transit joint 9, impactor shell 11, drill headstock 19 transfer to drill bit.
When drill string vibrates downwards, vibration generator 15 occurs to transmit assembly relative to reset torsion pass assembly and torsion and moves downward, because the ear 1501 that rushes on vibration generator 15 is arranged in left-turn spiral groove 1602 on jump bit 16, oppress jump bit helicla flute 1602 when vibration generator 15 drives to rush when ear 1501 moves downward, thus impel jump bit 16 to produce in limited space to turn clockwise.
When rushing ear 1501 lower surface and moving to lower thrust bearing 17 upper surface, jump bit 16 just state shown in state motion to Figure 13 as shown in Figure 12, the now positive shock surface 26 Churn drill headstock 19 of jump bit 16, this motion makes drill headstock 19 while bearing TORQ, also produce the vibration of circumferential torsion impact.
When drill string upwards vibrates, vibration generator 15 occurs to transmit assembly relative to reset torsion pass assembly and torsion and moves upward, due to the effect of thrust bearing stop collar 12 and upper thrust bearing 14, jump bit 16 can not move upward, the ear 1501 that rushes now on vibration generator 15 moves upward relative to dither transmission assembly and oppresses jump bit helicla flute 1602 in left-turn spiral groove 1602, thus impels jump bit 16 to produce in limited space to be rotated counterclockwise.When rushing ear 1501 upper surface and moving to upper thrust bearing 14 lower surface, jump bit 16 just state shown in state motion to Fig. 7, the now anti-shock surface 27 Churn drill headstock 19 of jump bit 16 as shown in Figure 8.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection domain of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.

Claims (8)

1. method of longitudinal vibration of drilling string is converted into a device for drill bit torsional pulse, it is characterized in that, include extensional vibration assembly, reset torsion pass assembly and torsion and occur to transmit assembly;
Extensional vibration assembly comprises biography and to shake axle, and the described biography axle that shakes is connected with stop collar and flower is healthy and strong, and the shake bottom of axle of described biography is connected with vibration generator, described vibration generator is provided with and rushes ear;
Described reset torsion pass assembly includes spline shell, spring, transit joint, impactor shell, and the top of described spring contacts with the bottom of stop collar, and the bottom of described spring contacts with the top of transit joint;
Described torsion occurs to transmit assembly and includes jump bit, and described jump bit is arranged in drill headstock, is provided with helicla flute in described jump bit, and the ear that rushes of described vibration generator matches with the helicla flute of jump bit;
Be provided with internal spline in described spline shell, spline body matches with internal spline;
The lower end of described impactor shell is provided with housing spline, and the lower end of described drill headstock is provided with pedestal spline, and housing spline and pedestal spline match.
2. device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse according to claim 1, is characterized in that, described reset torsion pass assembly also includes gland and spring shell; The top of described spline shell is provided with gland; The top of described spring shell connects with spline outer casing screw, and the middle part of spring shell also has steam vent; The bottom of spring shell and the top thread connection of transit joint, the bottom of described transit joint connects with impactor outer casing screw; Described spring is arranged in spring shell, and described spring is back-moving spring, and top, the bottom of described back-moving spring are touched with the lower plane of stop collar, the upper flat face of transit joint respectively.
3. device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse according to claim 2, is characterized in that, described torsion assembly occurs to transmit and also to include under thrust bearing stop collar, upper thrust bearing thrust bearing and anti-lost piece; Described impactor shell and drill headstock fix and form cavity in inside, and the inside of described cavity is followed successively by thrust bearing stop collar, upper thrust bearing, jump bit and lower thrust bearing from top to bottom.
4. device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse according to claim 3, is characterized in that, described impactor shell is provided with four anti-lost grooves of housing and four bolts hole;
Described drill headstock is provided with four anti-lost grooves of pedestal, and anti-lost piece can be compressed in the anti-lost groove of pedestal, be provided with little spring and be connected with anti-lost piece in the anti-lost groove of described pedestal;
The anti-lost groove of pedestal move to the anti-lost groove place of housing form cavity time, anti-lost piece is also pushed in the anti-lost groove of housing by little spring release.
5. device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse according to claim 4, is characterized in that, the top of described thrust bearing positioning sleeve holds out against the shaft shoulder of transit joint, and the bottom of thrust bearing positioning sleeve compresses upper thrust bearing.
6. device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse according to claim 5, it is characterized in that, the outer upper ends of vibration generator is provided with rushes ear, and the outside lower end of vibration generator is provided with seal groove, and the upper surface rushing ear is greater than the height of jump bit to the length of seal groove.
7. device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse according to claim 6, is characterized in that, the outer setting of described jump bit has tup, and described helicla flute is two left-handed helicla flutes, and described helicla flute is the slideway rushing ear.
8. device method of longitudinal vibration of drilling string being converted into drill bit torsional pulse according to claim 7, is characterized in that, the height of described jump bit is identical with the stroke passing the axle that shakes, and spiral fluted helical angle is identical with the anglec of rotation of jump bit.
CN201420776488.2U 2014-12-11 2014-12-11 Method of longitudinal vibration of drilling string is converted into the device of drill bit torsional pulse Withdrawn - After Issue CN204326969U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104499941A (en) * 2014-12-11 2015-04-08 中国石油大学(华东) Device for converting longitudinal vibration of drill stem into torsional impact of drill bit
WO2020031075A1 (en) * 2018-08-07 2020-02-13 Jaron Lyell Mcmillan Percussion device
CN111197463A (en) * 2018-11-19 2020-05-26 中国石油化工股份有限公司 Oscillator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104499941A (en) * 2014-12-11 2015-04-08 中国石油大学(华东) Device for converting longitudinal vibration of drill stem into torsional impact of drill bit
WO2020031075A1 (en) * 2018-08-07 2020-02-13 Jaron Lyell Mcmillan Percussion device
CN111197463A (en) * 2018-11-19 2020-05-26 中国石油化工股份有限公司 Oscillator

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