CN210460489U - Torsional impact device for well drilling - Google Patents
Torsional impact device for well drilling Download PDFInfo
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- CN210460489U CN210460489U CN201920613718.6U CN201920613718U CN210460489U CN 210460489 U CN210460489 U CN 210460489U CN 201920613718 U CN201920613718 U CN 201920613718U CN 210460489 U CN210460489 U CN 210460489U
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- limiting plate
- hammer body
- impact hammer
- reversing valve
- outer barrel
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Abstract
The utility model discloses a torsional impact device for well drilling, which comprises an outer barrel, wherein an upper end joint is fixedly connected with the upper end of the outer barrel, a lower end joint is fixedly connected with the lower end of the outer barrel, an impact hammer body is arranged in the outer barrel, a reversing valve is arranged in the impact hammer body, the upper end of the outer barrel is provided with an upper limiting plate, the lower end of the upper limiting plate is supported on a positioning step at the upper end of the outer barrel, the upper end of the upper limiting plate is positioned through the upper end joint, the upper end surface of the lower limiting plate is positioned through a positioning step at the lower end of the outer barrel, the lower end surface of the lower limiting plate is supported on the upper end surface of the lower end joint, two shaft ends of the impact hammer body and the reversing valve are respectively axially positioned through the upper limiting plate and the lower limiting plate, and first thrust bearings, and second thrust bearings are arranged between the two shaft ends of the reversing valve and the upper limiting plate and between the two shaft ends of the reversing valve and the lower limiting plate respectively. The abrasion of the structure is greatly reduced, the service life of the device is prolonged, and the structure runs stably.
Description
Technical Field
The utility model relates to an oil, natural gas exploitation drilling tool technical field, in particular to well drilling is with twisting impact device.
Background
With the great increase of the oil gas demand of the country, the exploration and development of the petroleum and natural gas are continuously increased. The drilling quantity of deep wells and ultra-deep wells is increasing day by day, and the drilling difficulty is also increasing continuously. Stick-slip vibration is a common important factor which easily causes the failure of a drilling tool and leads to the reduction of the mechanical drilling speed in the process of drilling a deep well and an ultra-deep well, and is particularly obvious when drilling a deep hard formation. Existing axial-percussion drilling does not effectively mitigate stick-slip vibrations of the lower tool (lower tool torque is periodically built up and released) and may even exacerbate the stick-slip vibrations by increasing the bite of the drill bit. Recent theoretical and experimental studies have shown that high frequency torsional shocks applied to the lower drill can be used to suppress its stick-slip vibrations.
The existing torsion impact tool has a complex flow passage structure, rapid structural abrasion and poor positioning and sealing effects of the impact unit, and drilling fluid contains various additives, barite and the like, but the existing torsion impact tool is not provided with a sand removal device, so that the impact unit can not normally operate due to sand sedimentation.
Disclosure of Invention
The utility model aims at providing a torsional impact device for well drilling that can solve above-mentioned a problem at least to the not enough that prior art corresponds.
The utility model aims at adopting the following scheme to realize: the utility model discloses a torsional impact device for well drilling, which comprises an outer barrel, an upper end connector and a lower end connector, wherein the upper end connector is used for connecting a drill rod, the lower end connector is used for connecting a drill bit, the upper end connector is fixedly connected with the upper end of the outer barrel, the lower end connector is fixedly connected with the lower end of the outer barrel, an impact hammer body is arranged in the outer barrel, a reversing valve is arranged in the impact hammer body, two ends of the outer barrel are respectively provided with a positioning step, the upper end of the outer barrel is provided with an upper limiting plate, the lower end of the upper limiting plate is supported on the positioning step at the upper end of the outer barrel, the upper end of the upper limiting plate is positioned through the upper end connector, a space is arranged between the upper end surface of the upper limiting plate and the lower end surface of the upper end connector, the upper end surface of the lower limiting plate is positioned through the positioning step at the lower end of the outer barrel, the lower end surface of the, the two shaft ends of the impact hammer body and the reversing valve are axially positioned through an upper limiting plate and a lower limiting plate respectively, first thrust bearings are arranged between the two shaft ends of the impact hammer body and the upper limiting plate and between the two shaft ends of the impact hammer body and the lower limiting plate respectively, second thrust bearings are arranged between the two shaft ends of the reversing valve and the upper limiting plate and between the two shaft ends of the reversing valve and the lower limiting plate respectively, and two concentric annular mounting grooves are formed in the upper limiting plate and the lower limiting plate and used for mounting the first thrust bearings and the second thrust bearings respectively.
The hole both ends of urceolus all are equipped with the location step, form the shoulder hole, the aperture of the hole interlude of urceolus is greater than the aperture at both ends.
The first thrust bearing comprises a steel ball retainer, two thrust base plates and a plurality of steel balls, the steel ball retainer is arranged between the first thrust base plate and the second thrust base plate, the steel balls are arranged on the steel ball retainer between the first thrust base plate and the second thrust base plate, the first thrust base plate and the second thrust base plate are respectively provided with an annular groove, the first thrust base plate, the steel ball retainer and the steel balls are arranged in annular mounting grooves formed in an upper limiting plate and a lower limiting plate, the second thrust base plates are fixed at two shaft ends of the impact hammer body, and the second thrust base plates at two shaft ends of the impact hammer body respectively extend into the annular mounting grooves formed in the upper limiting plate and the lower limiting plate and are in clearance fit with the steel balls.
The second thrust bearing comprises a steel ball retainer, two thrust base plates and a plurality of steel balls, the steel ball retainer is arranged between the first thrust base plate and the second thrust base plate, the steel balls are mounted on the steel ball retainer between the first thrust base plate and the second thrust base plate, the first thrust base plate and the second thrust base plate are respectively provided with an annular groove, the first thrust base plate, the steel ball retainer and the steel balls are mounted in annular mounting grooves formed in the upper limiting plate and the lower limiting plate, the second thrust base plates are fixed at two shaft ends of the reversing valve, and the second thrust base plates at two shaft ends of the reversing valve respectively extend into the annular mounting grooves formed in the upper limiting plate and the lower limiting plate to be in clearance fit with the steel balls.
An annular base plate is arranged between the upper end face of the upper limiting plate and the lower end face of the upper end joint, so that a space is reserved between the upper end face of the upper limiting plate and the lower end face of the upper end joint; an annular base plate is arranged between the lower end face of the lower limiting plate and the upper end face of the lower end connector, so that a space is reserved between the lower end face of the lower limiting plate and the upper end face of the lower end connector.
The upper end connector and the lower end connector are both provided with axial through holes, the circumferential inner wall of the outer barrel is provided with two impact hammer body grooves extending along the axial direction of the outer barrel, the two impact hammer body grooves are centrosymmetric about the axial lead of the outer barrel, the outer barrel is positioned on the circumferential inner walls of two sides of the impact hammer body grooves and is respectively and symmetrically provided with two liquid inlet grooves and one liquid outlet groove, the outer barrel is positioned between the two liquid inlet grooves, the liquid outlet grooves and the liquid inlet grooves are both penetrated through the outer barrel along the axial extension of the outer barrel, the circumferential outer wall of the impact hammer body is provided with two hammer heads extending along the axial direction of the impact hammer body, the two hammer heads are centrosymmetric about the axial lead of the impact hammer body, the impact hammer body is positioned in the outer barrel, the outer wall of the impact hammer body is in clearance fit with the inner wall of the outer barrel, the two hammer heads of the impact hammer body are, the circular inner wall of the impact hammer body is provided with two bulges which extend along the axial direction of the impact hammer body, the two bulges of the impact hammer body are in central symmetry about the axial lead of the impact hammer body, the reversing valve is positioned in the impact hammer body, the outer wall of the reversing valve is provided with two arc-shaped convex blocks which are in central symmetry, the arc-shaped convex blocks are provided with openings and communicated with a central shaft hole of the reversing valve, the arc-shaped convex blocks of the reversing valve are in clearance fit with the inner wall of the impact hammer body, the outer wall of the reversing valve is positioned at two sides of each arc-shaped convex block and is respectively provided with the bulges which extend along the axial direction, liquid cavities are respectively formed between each arc-shaped convex block and the bulges at the left side and the right side of the arc-shaped convex block, a reversing cavity is formed between two adjacent bulges at the outer wall of the reversing valve, the bulges at the inner wall of the impact hammer body extend into the two adjacent, the first overflowing hole on one side of the bulge of the impact hammer body is used for communicating a reversing cavity of the reversing valve with a liquid inlet groove of the outer barrel, the first overflowing hole on the other side of the bulge of the impact hammer body is used for communicating the reversing cavity of the reversing valve with a liquid outlet groove of the outer barrel, the two sides of the hammer head of the impact hammer body are respectively provided with a second overflowing hole which radially penetrates through the impact hammer body, the second overflowing hole on one side of the hammer head of the impact hammer body is used for communicating an opening on an arc-shaped lug of the reversing valve with the impact hammer body groove of the outer barrel, the second overflowing hole on the other side of the hammer head of the impact hammer body is used for communicating the liquid outlet cavity of the reversing valve with the impact hammer body groove of the outer barrel, the upper limiting plate and the lower limiting plate are respectively located at the two axial ends of the outer barrel, the impact hammer body and the reversing valve are located between the upper limiting plate and the lower limiting plate, a, the feed liquor groove that is equipped with on the urceolus respectively corresponds the intercommunication, be equipped with two first overflowing holes on the lower limiting plate and correspond the intercommunication with two play liquid grooves that are equipped with on the urceolus respectively, be equipped with two second overflowing holes on the lower limiting plate, correspond the intercommunication with two play liquid cavities that are equipped with on the switching-over valve.
The line of the central symmetry points of the two bulges of the impact hammer body is vertical to the line of the central symmetry points of the two hammers, and the intersection point is positioned on the axis of the impact hammer body.
The four bulges of the outer wall of the reversing valve and the outer wall of the arc-shaped convex block are positioned on the same circumference.
The upper limiting plate is provided with a central through hole which is communicated with the axial through hole of the upper end connector and the central shaft hole of the reversing valve respectively, and the lower limiting plate is provided with a central through hole which is communicated with the axial through hole of the lower end connector and the central shaft hole of the reversing valve respectively.
The liquid outlet cavities at the left side and the right side of each arc-shaped convex block are communicated.
The downstream end of the axial through hole of the upper end joint is in a conical shape with a small upper part and a big lower part.
The utility model has the advantages that: the torsional impact device for drilling comprises an outer barrel, an upper end connector and a lower end connector, wherein the upper end connector is used for connecting a drill rod, the lower end connector is used for connecting a drill bit, the upper end connector is fixedly connected with the upper end of the outer barrel, the lower end connector is fixedly connected with the lower end of the outer barrel, an impact hammer body is arranged in the outer barrel, a reversing valve is arranged in the impact hammer body, positioning steps are respectively arranged at two ends of the outer barrel, an upper limiting plate is arranged at the upper end of the outer barrel, the lower end of the upper limiting plate is supported on the positioning steps at the upper end of the outer barrel, the upper end of the upper limiting plate is positioned through the upper end connector, a space is arranged between the upper end surface of the upper limiting plate and the lower end surface of the upper end connector, the upper end surface of the lower limiting plate is positioned through the positioning steps at the lower end of the outer barrel, the lower end surface of the lower limiting, the two shaft ends of the impact hammer body and the reversing valve are axially positioned through an upper limiting plate and a lower limiting plate respectively, first thrust bearings are arranged between the two shaft ends of the impact hammer body and the upper limiting plate and between the two shaft ends of the reversing valve and the lower limiting plate respectively, and second thrust bearings are arranged between the two shaft ends of the reversing valve and the upper limiting plate and between the two shaft ends of the reversing valve and the lower limiting plate. By adopting the structure, the abrasion of the structure is greatly reduced, the service life of the device is prolonged, and the structure runs stably.
The utility model discloses an go up the limiting plate, down the limiting plate to strike hammer block and switching-over valve axial positioning, avoided strikeing hammer block and switching-over valve to take place axial displacement. A gap is reserved between the upper limiting plate and the lower end face of the upper end connector, so that a small part of drilling fluid flows into the liquid inlet groove of the outer barrel through the overflowing hole of the upper limiting plate after being filtered. By utilizing the structure of the upper limiting plate, the lower limiting plate, the outer cylinder, the reversing valve and the impact hammer body and the mutual matching among the upper limiting plate, the lower limiting plate, the outer cylinder, the reversing valve and the impact hammer body, during drilling, drilling fluid enters the stepped filter pipe through the inner hole of the upper end connector, most of the drilling fluid flows into the central shaft hole of the reversing valve, a small part of the drilling fluid flows into the liquid inlet groove of the outer barrel through the overflowing hole of the upper limiting plate after being filtered, the drilling fluid in the central shaft hole of the reversing valve enters the arc-shaped lug through the opening of the reversing valve after being filtered, then enters the impact hammer body groove of the outer barrel through the second overflowing hole on one side of the hammer head of the impact hammer body, the drilling fluid pushes the impact hammer body to rotate clockwise, the liquid in the impact hammer body groove of the outer barrel enters the liquid outlet cavity of the reversing valve through the second overflowing hole on the other side of the hammer head of the impact hammer body, then enters the inner hole of the lower end joint through a second overflowing hole of the lower limiting plate, and the reversing valve rotates clockwise along with the impact hammer by means of inertia and liquid pushing force. After the impact hammer body reaches the extreme position, the impact hammer body gives a knocking force to the outer cylinder clockwise, namely a clockwise knocking force to a PDC drill bit connected with the lower end. Meanwhile, the drilling fluid entering the liquid inlet groove of the outer barrel enters the reversing cavity of the reversing valve through the first overflowing hole on one side of the bulge of the impact hammer body, the drilling fluid pushes the reversing valve to continue rotating clockwise, the liquid in the reversing cavity of the reversing valve enters the liquid outlet groove of the outer barrel through the first overflowing hole on the other side of the bulge of the impact hammer body, and sequentially enters the groove communicated with the inner hole of the lower end connector through the liquid outlet groove of the outer barrel and the first overflowing hole of the lower limiting plate. The switching-over valve reachs extremely after the position, thereby realizes for strikeing the switching-over of hammer block, and the impact hammer block is counter-clockwise motion in the turn, like this the utility model discloses can last provide a periodic percussion power for the PDC drill bit, can improve the mechanical drilling speed in the poor stratum of drillability, can also solve the "card of a drill bit drilling string" smooth "problem simultaneously to improve the PDC drill bit and cut broken rock efficiency, effectively solve the poor difficult problem of deep well stratum drillability.
Drawings
Fig. 1 is a first cross-sectional view of a first embodiment of a torsional impact device for drilling according to the present invention;
fig. 2 is a second cross-sectional view of a first embodiment of the torsional impact device for drilling according to the present invention;
fig. 3 is a third sectional view of a first embodiment of the torsional impact device for drilling according to the present invention;
FIG. 4 is a schematic structural view of the outer barrel of the present invention;
FIG. 5 is a top view of the impact hammer of the present invention;
FIG. 6 is a schematic structural view of the impact hammer of the present invention;
FIG. 7 is a schematic view taken along line A-A of FIG. 6;
fig. 8 is a cross-sectional view of the reversing valve of the present invention;
fig. 9 is a top view of the diverter valve of the present invention;
FIG. 10 is a schematic view of FIG. 9 taken in the direction B;
fig. 11 is a schematic structural view of the upper limiting plate of the present invention;
fig. 12 is a schematic structural view of a lower retainer plate according to the present invention;
fig. 13 is a schematic structural view of the thrust bearing of the present invention;
fig. 14 is a schematic structural view of a retainer of a thrust bearing according to the present invention;
fig. 15 is a first cross-sectional view of a first embodiment of the torsional impact device for drilling according to the present invention;
fig. 16 is a second cross-sectional view of a first embodiment of the torsional impact device for drilling according to the present invention.
In the attached drawing, 1 is an outer cylinder, 1-1 is an impact hammer body groove, 1-2 is a liquid inlet groove, 1-3 is a liquid outlet groove, 2 is a lower end joint, 3 is a stepped filter pipe, 4 is an upper limiting plate, 4-1 is an overflowing hole of the upper limiting plate, 4-2 is an annular mounting groove of the upper limiting plate, 5 is a lower limiting plate, 5-1 is a first overflowing hole of the lower limiting plate, 5-2 is a second overflowing hole of the lower limiting plate, 5-3 is an annular mounting groove of the lower limiting plate, 6 is a reversing valve, 6-1 is an arc-shaped bump, 6-2 is an opening, 6-3 is a protrusion of the reversing valve, 6-4 is a reversing cavity, 6-5 is a liquid outlet cavity, 7 is an impact hammer body, 7-1 is a hammer head, 7-2 is a protrusion of the impact hammer body, 7-3 is a first overflowing hole of the impact hammer body, 7-4 is a second overflowing hole of the impact hammer body, 8 is a pin shaft, 9 is a plug screw, 10 is an annular base plate, 11 is an upper end connector, 12 is a first thrust bearing, 13 is a steel ball retainer, and 14 is a second thrust bearing.
Detailed Description
Example one
Referring to fig. 1 to 14, the present embodiment provides a torsional impact device for drilling, including an outer cylinder 1, an upper end connector 11 for connecting a drill rod, and a lower end connector 2 for connecting a drill bit, the upper end connector is fixedly connected with the upper end of the outer cylinder, the lower end connector is fixedly connected with the lower end of the outer cylinder, a hammer body is installed in the outer cylinder, a reversing valve is installed in the hammer body, positioning steps are respectively installed at two ends of the outer cylinder, an upper limit plate 4 is installed at the upper end of the outer cylinder, the lower end of the upper limit plate is supported on the positioning steps at the upper end of the outer cylinder, the upper end of the upper limit plate is positioned by the upper end connector, a gap is provided between the upper end surface of the upper limit plate and the lower end surface of the upper end connector, the upper end surface of the lower limit plate 5 is positioned by the positioning steps at the lower end of the outer cylinder, the lower end surface, the lower end face of the lower limiting plate and the upper end face of the lower end joint are spaced, the two shaft ends of the impact hammer body 7 and the reversing valve 6 are axially positioned through the upper limiting plate and the lower limiting plate respectively, first thrust bearings are arranged between the two shaft ends of the impact hammer body and the upper limiting plate and between the two shaft ends of the impact hammer body and the lower limiting plate respectively, second thrust bearings are arranged between the two shaft ends of the reversing valve and the upper limiting plate and between the two shaft ends of the reversing valve and the lower limiting plate respectively, and the upper limiting plate and the lower limiting plate are provided with two concentric annular mounting grooves for mounting the first thrust bearings and the second thrust bearings respectively.
The hole both ends of urceolus all are equipped with the location step, form the shoulder hole, the aperture of the hole interlude of urceolus is greater than the aperture at both ends.
The first thrust bearing 12 comprises a steel ball retainer 13, two thrust base plates and a plurality of steel balls, the steel ball retainer is arranged between the first thrust base plate and the second thrust base plate, the steel balls are arranged on the steel ball retainer between the first thrust base plate and the second thrust base plate, the first thrust base plate and the second thrust base plate are respectively provided with an annular groove, the first thrust base plate, the steel ball retainer and the steel balls are arranged in the annular mounting grooves formed in the upper limiting plate and the lower limiting plate, the second thrust base plates are fixed at two shaft ends of the impact hammer body, and the second thrust base plates at two shaft ends of the impact hammer body respectively extend into the annular mounting grooves formed in the upper limiting plate and the lower limiting plate and are in clearance fit with the steel balls.
The second thrust bearing 14 comprises a steel ball retainer, two thrust base plates and a plurality of steel balls, the steel ball retainer is arranged between the first thrust base plate and the second thrust base plate, the steel balls are arranged on the steel ball retainer between the first thrust base plate and the second thrust base plate, the first thrust base plate and the second thrust base plate are respectively provided with an annular groove, the first thrust base plate, the steel ball retainer and the steel balls are arranged in annular mounting grooves formed in the upper limiting plate and the lower limiting plate, the second thrust base plates are fixed at two shaft ends of the reversing valve, and the second thrust base plates at two shaft ends of the reversing valve respectively extend into the annular mounting grooves formed in the upper limiting plate and the lower limiting plate to be in clearance fit with the steel balls. Annular bulges are respectively arranged at two shaft ends of the reversing valve and the impact hammer body, the annular bulges at the two shaft ends of the reversing valve and the impact hammer body correspondingly extend into the annular mounting groove 4-2 of the upper limiting plate and the annular mounting groove 5-3 of the lower limiting plate, and a sealing ring is arranged between the annular bulges and the inner wall of the annular mounting groove.
An annular base plate is arranged between the upper end face of the upper limiting plate and the lower end face of the upper end joint, so that a space is reserved between the upper end face of the upper limiting plate and the lower end face of the upper end joint; an annular base plate 10 is arranged between the lower end face of the lower limiting plate and the upper end face of the lower end joint, so that a space is reserved between the lower end face of the lower limiting plate and the upper end face of the lower end joint.
The upper end connector and the lower end connector are respectively provided with an axial through hole, the circumferential inner wall of the outer barrel is provided with two impact hammer body grooves 1-1 extending along the axial direction of the outer barrel, the two impact hammer body grooves are in central symmetry about the axial lead of the outer barrel, the circumferential inner walls of the two sides of the outer barrel, which are positioned on the impact hammer body grooves, are respectively and symmetrically provided with two liquid inlet grooves 1-2 and one liquid outlet groove 1-3, the liquid outlet groove of the outer barrel, which is positioned on each side of the impact hammer body grooves, is positioned between the two liquid inlet grooves, the liquid outlet grooves and the liquid inlet grooves respectively penetrate through the outer barrel along the axial extension of the outer barrel, the circumferential outer wall of the impact hammer body is provided with two hammer heads 7-1 extending along the axial direction of the impact hammer body, the two hammer heads are in central symmetry about the axial lead of the impact hammer body, the impact hammer body is positioned in the outer barrel, the outer wall of the impact hammer, the inner wall of the circumference of the impact hammer body is provided with two bulges 7-2 extending along the axial direction of the impact hammer body, the two bulges of the impact hammer body are in central symmetry about the axial lead of the impact hammer body, the reversing valve is positioned in the impact hammer body, the outer wall of the reversing valve is provided with two arc-shaped convex blocks 6-1 in central symmetry, the arc-shaped convex blocks are provided with openings 6-2 which are communicated with the central shaft hole of the reversing valve, the arc-shaped convex blocks of the reversing valve are in clearance fit with the inner wall of the impact hammer body, the outer wall of the reversing valve is positioned at two sides of each arc-shaped convex block and is respectively provided with bulges 6-3 extending along the axial direction, liquid outlet cavities 6-5 are respectively formed between each arc-shaped convex block and the bulges at the left side and the right side of the arc-shaped convex block, a reversing cavity 6-4 is formed between two adjacent bulges at the outer wall of the, the two sides of the bulge of the impact hammer body are respectively provided with a first overflowing hole 7-3 which radially penetrates through the impact hammer body, the first overflowing hole on one side of the bulge of the impact hammer body is used for communicating a reversing cavity of the reversing valve with a liquid inlet groove of the outer barrel, the first overflowing hole on the other side of the bulge of the impact hammer body is used for communicating the reversing cavity of the reversing valve with a liquid outlet groove of the outer barrel, the two sides of the hammer head of the impact hammer body are respectively provided with a second overflowing hole 7-4 which radially penetrates through the impact hammer body, the second overflowing hole on one side of the hammer head of the impact hammer body is used for communicating an opening on an arc-shaped lug of the reversing valve with an impact hammer body groove of the outer barrel, the second overflowing hole on the other side of the hammer head of the impact hammer body is used for communicating a liquid outlet cavity of the reversing valve with the impact hammer body groove of the outer barrel, the upper limiting plate and the lower limiting plate are respectively, the upper limiting plate is provided with a gap with the lower end face of the upper end connector, the upper limiting plate is provided with four overflowing holes 4-1 which are respectively communicated with a liquid inlet groove arranged on the outer barrel correspondingly, the lower limiting plate is provided with two first overflowing holes 5-1 which are respectively communicated with two liquid outlet grooves arranged on the outer barrel correspondingly, and the lower limiting plate is provided with two second overflowing holes 5-2 which are respectively communicated with two liquid outlet cavities arranged on the reversing valve correspondingly. The second overflowing holes of the lower limiting plate are arc-shaped strip-shaped holes.
The line of the central symmetry points of the two bulges of the impact hammer body is vertical to the line of the central symmetry points of the two hammers, and the intersection point is positioned on the axis of the impact hammer body.
The four bulges of the outer wall of the reversing valve and the outer wall of the arc-shaped convex block are positioned on the same circumference.
The upper limiting plate is provided with a central through hole which is communicated with the axial through hole of the upper end connector and the central shaft hole of the reversing valve respectively, and the lower limiting plate is provided with a central through hole which is communicated with the axial through hole of the lower end connector and the central shaft hole of the reversing valve respectively.
The liquid outlet cavities at the left side and the right side of each arc-shaped convex block are communicated.
The downstream end of the axial through hole of the upper end joint is in a conical shape with a small upper part and a big lower part.
The hole both ends of urceolus all are equipped with the ladder, form the shoulder hole, the aperture of the hole interlude of urceolus is greater than the aperture at both ends.
The upper end connector adopts a male buckle or a female buckle; the upper end joint is fixedly connected with the outer barrel in the circumferential direction through a pin shaft 8. And the upper end connector is provided with a key groove matched with the spline of the outer barrel. The pin shaft is fixed on the outer cylinder and the upper end connector through a plug screw. The lower end joint is fixedly connected with the outer barrel in the circumferential direction through a pin shaft. The pin shaft is fixed on the outer cylinder and the lower end connector through a plug screw 9. The upper end of the lower end connector is provided with a key groove matched with the spline of the outer barrel, and the lower end of the lower end connector is provided with a female buckle. The upper end joint and the outer cylinder can be fixedly connected by threads or bolts or welded and the like. The lower end joint and the outer cylinder can be fixedly connected by threads or bolts or welded and the like.
Example two
Referring to fig. 3 to 16, this embodiment further includes a stepped filter tube 3, the stepped filter tube is supported on the upper limiting plate, and the small diameter section of the stepped filter tube is located in the central axial hole of the reversing valve, and the large diameter section of the stepped filter tube is in clearance fit with the axial through hole of the upper end joint. The path section of notch cuttype filter tube extends to down in the central through hole that the limiting plate was equipped with, the axial through hole of upper end joint is big shoulder hole from top to bottom, the upper end of notch cuttype filter tube stretches into in the big footpath section of upper end joint axial through hole. And a plurality of filtering holes are uniformly distributed on the pipe wall of the stepped filtering pipe. And no filtering hole is formed in the pipe wall of one section of the stepped filtering pipe matched with the large-diameter section of the axial through hole of the upper end connector. After the stepped filter pipe is arranged, an annular base plate does not need to be arranged between the upper end face of the upper limiting plate and the lower end face of the upper end connector, and the upper end of the upper limiting plate is positioned through the stepped filter pipe. The utility model discloses a notch cuttype filter tube filters the sand grain deposit in the drilling fluid, makes the drilling fluid after filtering get into urceolus, impact hammer block and switching-over valve in, guarantees to strike unit normal operating. The stepped filter tube can also guide the reversing valve. Other technical features of the present embodiment are the same as those of the first embodiment.
During the use, the utility model discloses the upper end links to each other with the drilling rod through last end joint pin thread, and the box that the lower extreme passes through the lower extreme joint links to each other with the PDC drill bit. During drilling, drilling fluid enters the stepped filter pipe through an inner hole of the upper end connector, most of the drilling fluid flows into a central shaft hole of the reversing valve, a small part of the drilling fluid flows into a fluid inlet groove of the outer barrel through an overflowing hole of the upper limiting plate after being filtered, the drilling fluid in the central shaft hole of the reversing valve enters an impact hammer body groove of the outer barrel through a second overflowing hole on one side of a hammer head of the impact hammer body after being filtered through an opening of the reversing valve, the drilling fluid pushes the impact hammer body to rotate clockwise, liquid in the impact hammer body groove of the outer barrel enters a liquid outlet cavity of the reversing valve through a second overflowing hole on the other side of the hammer head of the impact hammer body and then enters an inner hole of the lower end connector through a second overflowing hole of the lower limiting plate, and the reversing valve rotates clockwise along with the impact hammer by means of inertia and liquid pushing force. After the impact hammer body reaches the extreme position, the impact hammer body gives a knocking force to the outer cylinder clockwise, namely a clockwise knocking force to a PDC drill bit connected with the lower end. Meanwhile, the drilling fluid entering the liquid inlet groove of the outer barrel enters the reversing cavity of the reversing valve through the first overflowing hole on one side of the bulge of the impact hammer body, the drilling fluid pushes the reversing valve to continue rotating clockwise, the liquid in the reversing cavity of the reversing valve enters the liquid outlet groove of the outer barrel through the first overflowing hole on the other side of the bulge of the impact hammer body, and sequentially enters the groove communicated with the inner hole of the lower end connector through the liquid outlet groove of the outer barrel and the first overflowing hole of the lower limiting plate. The switching-over valve reachs extremely after the position to the realization is given the switching-over of impact hammer block, and impact hammer block anticlockwise motion next promptly, like this the utility model discloses can last provide a periodic percussion power for the PDC drill bit.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A torsional impact device for well drilling is characterized in that: including urceolus and be used for connecting the upper end joint of drilling rod and the lower extreme joint that is used for connecting the drill bit, upper end joint and urceolus upper end fixed connection, lower extreme joint and urceolus lower extreme fixed connection, install the impact hammer body in the urceolus, install the switching-over valve in the impact hammer body, the both ends of urceolus are equipped with the location step respectively, the upper end of urceolus is equipped with last limiting plate, go up the lower extreme of limiting plate and support on the location step of urceolus upper end, go up the upper end of limiting plate and pass through the upper end joint location, go up and be equipped with the interval between the up end of limiting plate and the lower terminal surface of upper end joint, the up end of lower limiting plate is fixed in the location step of urceolus lower extreme, the lower terminal surface of lower limiting plate supports the up end of lower end joint, be equipped with the interval between the lower terminal surface of, Two shaft ends of the reversing valve are axially positioned through an upper limiting plate and a lower limiting plate respectively, first thrust bearings are arranged between the two shaft ends of the impact hammer body and the upper limiting plate and between the two shaft ends of the impact hammer body and the lower limiting plate respectively, second thrust bearings are arranged between the two shaft ends of the reversing valve and the upper limiting plate and between the two shaft ends of the reversing valve and the lower limiting plate respectively, and two concentric annular mounting grooves are formed in the upper limiting plate and the lower limiting plate and used for mounting the first thrust bearings and the second thrust bearings respectively.
2. The torsional impact device for drilling as claimed in claim 1, wherein: the first thrust bearing comprises a steel ball retainer, two thrust base plates and a plurality of steel balls, the steel ball retainer is arranged between the first thrust base plate and the second thrust base plate, the steel balls are arranged on the steel ball retainer between the first thrust base plate and the second thrust base plate, the first thrust base plate and the second thrust base plate are respectively provided with an annular groove, the first thrust base plate, the steel ball retainer and the steel balls are arranged in annular mounting grooves formed in an upper limiting plate and a lower limiting plate, the second thrust base plates are fixed at two shaft ends of the impact hammer body, and the second thrust base plates at two shaft ends of the impact hammer body respectively extend into the annular mounting grooves formed in the upper limiting plate and the lower limiting plate and are in clearance fit with the steel balls.
3. The torsional impact device for drilling as claimed in claim 1, wherein: the second thrust bearing comprises a steel ball retainer, two thrust base plates and a plurality of steel balls, the steel ball retainer is arranged between the first thrust base plate and the second thrust base plate, the steel balls are mounted on the steel ball retainer between the first thrust base plate and the second thrust base plate, the first thrust base plate and the second thrust base plate are respectively provided with an annular groove, the first thrust base plate, the steel ball retainer and the steel balls are mounted in annular mounting grooves formed in the upper limiting plate and the lower limiting plate, the second thrust base plates are fixed at two shaft ends of the reversing valve, and the second thrust base plates at two shaft ends of the reversing valve respectively extend into the annular mounting grooves formed in the upper limiting plate and the lower limiting plate to be in clearance fit with the steel balls.
4. The torsional impact device for drilling as claimed in claim 1, wherein: an annular base plate is arranged between the upper end face of the upper limiting plate and the lower end face of the upper end joint, so that a space is reserved between the upper end face of the upper limiting plate and the lower end face of the upper end joint; an annular base plate is arranged between the lower end face of the lower limiting plate and the upper end face of the lower end connector, so that a space is reserved between the lower end face of the lower limiting plate and the upper end face of the lower end connector.
5. The torsional impact device for drilling as claimed in claim 1, wherein: the upper end connector and the lower end connector are both provided with axial through holes, the circumferential inner wall of the outer barrel is provided with two impact hammer body grooves extending along the axial direction of the outer barrel, the two impact hammer body grooves are centrosymmetric about the axial lead of the outer barrel, the outer barrel is positioned on the circumferential inner walls of two sides of the impact hammer body grooves and is respectively and symmetrically provided with two liquid inlet grooves and one liquid outlet groove, the outer barrel is positioned between the two liquid inlet grooves, the liquid outlet grooves and the liquid inlet grooves are both penetrated through the outer barrel along the axial extension of the outer barrel, the circumferential outer wall of the impact hammer body is provided with two hammer heads extending along the axial direction of the impact hammer body, the two hammer heads are centrosymmetric about the axial lead of the impact hammer body, the impact hammer body is positioned in the outer barrel, the outer wall of the impact hammer body is in clearance fit with the inner wall of the outer barrel, the two hammer heads of the impact hammer body are, the circular inner wall of the impact hammer body is provided with two bulges which extend along the axial direction of the impact hammer body, the two bulges of the impact hammer body are in central symmetry about the axial lead of the impact hammer body, the reversing valve is positioned in the impact hammer body, the outer wall of the reversing valve is provided with two arc-shaped convex blocks which are in central symmetry, the arc-shaped convex blocks are provided with openings and communicated with a central shaft hole of the reversing valve, the arc-shaped convex blocks of the reversing valve are in clearance fit with the inner wall of the impact hammer body, the outer wall of the reversing valve is positioned at two sides of each arc-shaped convex block and is respectively provided with the bulges which extend along the axial direction, liquid cavities are respectively formed between each arc-shaped convex block and the bulges at the left side and the right side of the arc-shaped convex block, a reversing cavity is formed between two adjacent bulges at the outer wall of the reversing valve, the bulges at the inner wall of the impact hammer body extend into the two adjacent, the first overflowing hole on one side of the bulge of the impact hammer body is used for communicating a reversing cavity of the reversing valve with a liquid inlet groove of the outer barrel, the first overflowing hole on the other side of the bulge of the impact hammer body is used for communicating the reversing cavity of the reversing valve with a liquid outlet groove of the outer barrel, the two sides of the hammer head of the impact hammer body are respectively provided with a second overflowing hole which radially penetrates through the impact hammer body, the second overflowing hole on one side of the hammer head of the impact hammer body is used for communicating an opening on an arc-shaped lug of the reversing valve with the impact hammer body groove of the outer barrel, the second overflowing hole on the other side of the hammer head of the impact hammer body is used for communicating the liquid outlet cavity of the reversing valve with the impact hammer body groove of the outer barrel, the upper limiting plate and the lower limiting plate are respectively located at the two axial ends of the outer barrel, the impact hammer body and the reversing valve are located between the upper limiting plate and the lower limiting plate, a, the feed liquor groove that is equipped with on the urceolus respectively corresponds the intercommunication, be equipped with two first overflowing holes on the lower limiting plate and correspond the intercommunication with two play liquid grooves that are equipped with on the urceolus respectively, be equipped with two second overflowing holes on the lower limiting plate, correspond the intercommunication with two play liquid cavities that are equipped with on the switching-over valve.
6. The torsional impact device for well drilling according to claim 5, wherein: the line of the central symmetry points of the two bulges of the impact hammer body is vertical to the line of the central symmetry points of the two hammers, and the intersection point is positioned on the axis of the impact hammer body.
7. The torsional impact device for well drilling according to claim 5, wherein: the four bulges of the outer wall of the reversing valve and the outer wall of the arc-shaped convex block are positioned on the same circumference.
8. The torsional impact device for well drilling according to claim 5, wherein: the upper limiting plate is provided with a central through hole which is communicated with the axial through hole of the upper end connector and the central shaft hole of the reversing valve respectively, and the lower limiting plate is provided with a central through hole which is communicated with the axial through hole of the lower end connector and the central shaft hole of the reversing valve respectively.
9. The torsional impact device for well drilling according to claim 5, wherein: the liquid outlet cavities at the left side and the right side of each arc-shaped convex block are communicated.
10. The torsional impact device for drilling as claimed in claim 1, wherein: the downstream end of the axial through hole of the upper end joint is in a conical shape with a small upper part and a big lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920613718.6U CN210460489U (en) | 2019-04-29 | 2019-04-29 | Torsional impact device for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920613718.6U CN210460489U (en) | 2019-04-29 | 2019-04-29 | Torsional impact device for well drilling |
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| Publication Number | Publication Date |
|---|---|
| CN210460489U true CN210460489U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920613718.6U Expired - Fee Related CN210460489U (en) | 2019-04-29 | 2019-04-29 | Torsional impact device for well drilling |
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| Country | Link |
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| CN (1) | CN210460489U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456624A (en) * | 2020-05-20 | 2020-07-28 | 中国石油集团渤海钻探工程有限公司 | Impeller driving torsion impactor for well drilling |
| CN111720050A (en) * | 2020-06-30 | 2020-09-29 | 合力（天津）能源科技股份有限公司 | Deflector rod reversing valve torsion impactor |
-
2019
- 2019-04-29 CN CN201920613718.6U patent/CN210460489U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456624A (en) * | 2020-05-20 | 2020-07-28 | 中国石油集团渤海钻探工程有限公司 | Impeller driving torsion impactor for well drilling |
| CN111720050A (en) * | 2020-06-30 | 2020-09-29 | 合力（天津）能源科技股份有限公司 | Deflector rod reversing valve torsion impactor |
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Granted publication date: 20200505 |