CN204113118U - The casing pipe running device of operation is driven based on top - Google Patents

The casing pipe running device of operation is driven based on top Download PDF

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Publication number
CN204113118U
CN204113118U CN201420535130.0U CN201420535130U CN204113118U CN 204113118 U CN204113118 U CN 204113118U CN 201420535130 U CN201420535130 U CN 201420535130U CN 204113118 U CN204113118 U CN 204113118U
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CN
China
Prior art keywords
grab
cam
wheel case
spinner
lower cam
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Expired - Fee Related
Application number
CN201420535130.0U
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Chinese (zh)
Inventor
韩飞
王力
李雪辉
任荣权
王宏伟
郑万江
阳文发
纪友哲
郭慧娟
耿莉
朱英杰
杨磊
范应璞
于永亮
张士彬
刘洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Engineering Technology R&D Co Ltd
Original Assignee
China National Petroleum Corp
CNPC Drilling Research Institute Co Ltd
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Priority to CN201420535130.0U priority Critical patent/CN204113118U/en
Application granted granted Critical
Publication of CN204113118U publication Critical patent/CN204113118U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model provides a kind of casing pipe running device driving operation based on top, casing pipe running device comprises locking assembly, locking assembly comprises locking mandrel, slips, epirelief wheel case, lower cam cover, and locking mandrel has the centre bore run through vertically, and the upper end of locking mandrel can be driven with top and is connected; Slip sleeve is located at locking mandrel exterior, is provided with sleeve pipe in slips outer cover; Epirelief wheel case is socketed in locking mandrel exterior; Lower cam cover is set in locking mandrel exterior, and lower cam cover to be positioned at below epirelief wheel case and to be connected with slips; Epirelief wheel case lower end is provided with overhead cam, and overhead cam lower end is provided with grab; Lower cam set upper side is provided with lower cam, and lower cam upper end is provided with the lower grab that can be engaged mutually with upper grab.The casing pipe running device driving operation based on top of the present utility model adopts Mechanical Driven, compared with hydraulic-driven, have structure simple, operate simple and easy, that reliability is high advantage.

Description

The casing pipe running device of operation is driven based on top
Technical field
The utility model is about oil and gas well drilling field, particularly relates to a kind of casing pipe running device driving operation based on top for casing job.
Background technology
Top is driven and is widely used in oil-well rig as a kind of Advanced Equipment, and the advantage that top is driven is mainly reflected in efficiently creeping into of drill string and effectively solves creeps into the aspects such as accident.Along with the development of drilling equipment technology, the function that top is driven is also in continuous expansion.At present, related scientific research unit have developed top and has driven casing pipe running device, and it drives the functions such as spinner, the at any time circulating mud realizing sleeve pipe by top, and what substantially increase sleeve pipe transfers efficiency.
Conventional top is driven casing pipe running device and is adopted hydraulic-driven, has the following disadvantages:
1, hydraulic oil easily leaks, and pollutes the environment after leakage, and hydraulic oil is larger by such environmental effects (as temperature etc.);
2, fluid pressure line and matching component many (as hydraulic control valve, hydraulic line and hydraulic pump etc.);
3, system reliability is poor, and such as, hydraulic top drives casing pipe running device to be needed to work under long-time hydraulic action, causes seal reliability relatively poor, as rotatory sealing;
4, the installing/dismounting time is longer, not easy care.
Driving the above-mentioned defect of casing pipe running device existence for solving existing top, being necessary the casing pipe running device driving operation based on top designing the driving of a kind of complete mechanical
Utility model content
The purpose of this utility model is to provide a kind of casing pipe running device driving operation based on top, to solve the above-mentioned defect that casing pipe running device existence is driven on existing hydraulic-driven top.
For achieving the above object, the utility model proposes a kind of casing pipe running device driving operation based on top, comprise locking assembly, described locking assembly comprises: locking mandrel, has the centre bore run through vertically; Slips, is set in described locking mandrel exterior, at the outside sheathed sleeve pipe of described slips; Epirelief wheel case, is socketed in described locking mandrel exterior; Lower cam cover, is set in described locking mandrel exterior, and described lower cam cover to be positioned at below described epirelief wheel case and to be connected with described slips; Wherein,
Described epirelief wheel case and described lower cam cover, by relatively rotating, realize the switching of snap close state and trip status; In snap close state, described epirelief wheel case and described lower cam overlap the clamping formed axially; At trip status, described epirelief wheel case and described lower cam overlap depart from described in clamping axially, what formed in axial locked and circumference is unidirectional locked, and described slips clamps described sleeve pipe.
Drive the casing pipe running device of operation as above based on top, wherein, described epirelief wheel case lower end is provided with overhead cam, and described overhead cam lower end is provided with grab; Described lower cam set upper side is provided with lower cam, and described lower cam upper end is provided with the lower grab that can be engaged mutually with described upper grab; In snap close state, described epirelief wheel case and described lower cam cover are engaged by described upper grab and described lower grab the clamping formed axially; At trip status, described upper grab departs from described lower grab and is engaged, and the bottom surface of described overhead cam and described lower grab to be formed in axial locked and circumference unidirectional locked.
Drive the casing pipe running device of operation as above based on top, wherein, described overhead cam is also provided with the spinner inclined-plane be connected with described upper grab, described spinner inclined-plane is positioned at the bottom surface of described overhead cam, and the bottom end face of described upper grab is also provided with shackle inclined-plane; The end face of described lower cam is also provided with guiding surface, the oblique bottom extending to described lower grab of described guiding surface; The top of described lower grab have respectively to both sides tilt can with the unidirectional locked spinner latch ramp in described spinner inclined-plane and can locked shackle latch ramp unidirectional with described shackle inclined-plane;
In snap close state, described upper grab is engaged mutually with described lower grab, and described guiding surface and described shackle inclined-plane fit;
At trip status, described upper grab departs from described lower grab and is engaged, and described spinner inclined-plane can be unidirectional locked with described spinner latch ramp, and described shackle inclined-plane can be unidirectional locked with described shackle latch ramp.
The casing pipe running device of operation is driven as above based on top, wherein, described overhead cam and described spinner inclined-plane are arc, and all extend along the circumferencial direction of described epirelief wheel case, described spinner inclined-plane is downward-sloping gradually in the counterclockwise direction, described upper grab is connected to the least significant end on described spinner inclined-plane, and described upper grab is to lateral buckling in described epirelief wheel case;
Described lower cam is arc, and extend along the circumferencial direction of described lower cam cover, described guiding surface tilts to described lower grab bottom in the counterclockwise direction obliquely by described lower cam bottom, described spinner latch ramp is by described lower grab top oblique inclined downward to the right, and described shackle latch ramp is by described lower grab top oblique inclined downward left.
Drive the casing pipe running device of operation as above based on top, wherein, described overhead cam is two and is arranged by two upper gap intervals, and described lower cam is two and is arranged by two lower gap intervals;
In snap close state, described lower cam stretches in the upper gap between two described overhead cams, described overhead cam stretches in the lower gap between two described lower cams, and two the described upper grab correspondences be located on described overhead cam are engaged mutually with two that are located on described lower cam described lower grabs;
At trip status, described lower grab locks mutually with the bottom surface of first described overhead cam, or described lower grab locks mutually with the bottom surface of second described overhead cam.
Drive the casing pipe running device of operation as above based on top, wherein, between described epirelief wheel case and described lower cam overlap, compress spring;
In snap close state, described spring is in compressive state, and described epirelief wheel case and described lower cam cover realize clamping axially by described spring.
The casing pipe running device of operation is driven as above based on top, wherein, described locking mandrel upper end is arranged with upper joint sleeve, described upper joint sleeve is connected to described overhead cam cover top, the outside of described epirelief wheel case and described lower cam cover is located at by described spring housing, and described spring compression is between described upper joint sleeve and described lower cam overlap.
The casing pipe running device of operation is driven as above based on top, wherein, slip spider is arranged with between described locking mandrel and described slips, described slip spider is fixedly connected with described slips, slip sleeve is connected with above described slip spider, described slip sleeve is connected to described lower cam cover below, and described spring compression is between described upper joint sleeve and described slip sleeve.
The casing pipe running device of operation is driven as above based on top, wherein, the lower end of described locking mandrel has conical outer wall face, the external diameter in described conical outer wall face from top to bottom increases gradually, described slip spider has the conical inboard wall face of matching with described conical outer wall face, and the internal diameter in described conical inboard wall face from top to bottom increases gradually.
The casing pipe running device of operation is driven as above based on top, wherein, described spring outer cover is provided with overcoat, described overcoat outer cover is provided with catch ring, described outer set upper side is connected with described upper joint sleeve, described catch ring is grooved, and described spring compression is between described overcoat and described catch ring, and described catch ring, described slip sleeve and described lower cam cover are fixedly connected.
Drive the casing pipe running device of operation as above based on top, wherein, described casing pipe running device also comprises top and drives, and the upper end of described locking mandrel is driven with described top and is connected.
The casing pipe running device of operation is driven as above based on top, wherein, described casing pipe running device also comprises the seal assembly be located at below described locking assembly, described seal assembly comprises: sealing mandrel, be connected to below described locking mandrel, the centre bore of described sealing mandrel is connected with the centre bore of described locking mandrel; Seal rubber plug, is set in described sealing mandrel exterior.
Of the present utility modelly drive the feature of the casing pipe running device of operation based on top and advantage is:
1, casing pipe running device of the present utility model is Mechanical Driven, by control epirelief wheel case and lower cam cover move axially and circumference unidirectional locked, realize the spinner operation to sleeve pipe and shackle operation, compared with hydraulic-driven, structure is simple, and operate simple and easy, reliability is high, there will not be the situation of hydraulic fluid leak, overcome fluid pressure line complexity, defect that parts are many;
2, casing pipe running device of the present utility model realizes axial clamping by the occlusion of upper grab and lower grab, by arrange on lower cam guiding surface on grab and lower grab occlusion and depart from occlusion guiding be provided, by overhead cam, on grab arranges spinner inclined-plane, shackle inclined-plane respectively, and correspondence arranges spinner latch ramp, shackle latch ramp on lower grab, when epirelief wheel case is rotated and lower cam overlap and lock, thus adopt the mode of cam structure mechanical caging to realize the clamping operation of sleeve pipe;
3, the locking mandrel in the utility model is matched by taper surface with slip spider, and when moving up vertically to make locking mandrel, taper surface impels slips expansion clamping internal surface of sleeve pipe, realizes the control to sleeve pipe.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the schematic diagram driving the casing pipe running device of operation based on top of the present utility model;
Fig. 2 is the schematic diagram that the upper grab of epirelief wheel case is engaged mutually with the lower grab that lower cam overlaps;
Fig. 3 is that the upper grab of epirelief wheel case departs from the lower grab that lower cam overlaps the schematic diagram be engaged;
The schematic diagram that when Fig. 4 is spinner job state, spinner inclined-plane is mutually locked with spinner latch ramp;
The schematic diagram that when Fig. 5 is shackle job state, shackle inclined-plane is mutually locked with shackle latch ramp;
Fig. 6 is the schematic diagram that lower grab that the upper grab of epirelief wheel case and lower cam overlap recovers interlocking pattern;
Fig. 7 is the schematic diagram of protection joint.
Critical element label declaration:
1 locking assembly 10 locks mandrel
11 slips
111 slip spider 1111 fixed heads
112 slip sleeve 113 slip spider baffle rings
12 epirelief wheel cases
121 overhead cam 1211 spinner inclined-planes
Grab medial surface on grab 1221 shackle inclined-plane 1222 on 122
13 times cam covers
131 times cam 1311 guiding surfaces
132 times grabs
1321 spinner latch ramp 1322 shackle latch ramps, 1323 times grab medial surfaces
1324 spinner guiding surfaces
14 spring 15 upper joint sleeve 16 overcoats
17 catch rings
2 seal assemblies
20 sealing mandrel 21 retainer ring 22 baffle rings
23 seal rubber plug 24 plug fixed covers
3 sleeve pipes
4 protection joints
41 dividing plates 42 are located hole and are located hole 43 times
5 well head grip sleeves
Detailed description of the invention
As described in Figure 1, the utility model provides a kind of casing pipe running device driving operation based on top, and this casing pipe running device comprises locking assembly 1, and locking assembly 1 comprises: locking mandrel 10, have the centre bore run through vertically, the upper end of locking mandrel 10 can be driven with top and is connected; Slips 11, is set in locking mandrel 10 outside, is provided with sleeve pipe 3 in slips 11 outer cover; Epirelief wheel case 12, is socketed in locking mandrel 10 outside; Lower cam cover 13, is set in locking mandrel 10 outside, and lower cam cover 13 to be positioned at below epirelief wheel case 12 and to be connected with slips 11;
Wherein, epirelief wheel case 12 lower end is provided with overhead cam 121, and overhead cam 121 lower end is provided with grab 122; Lower cam overlaps 13 upper ends and is provided with lower cam 131, and lower cam 131 upper end is provided with the lower grab 132 that can be engaged mutually with upper grab 122;
Overhead cam 121 is also provided with the spinner inclined-plane 1211 be connected with upper grab 122, spinner inclined-plane 1211 is positioned at the bottom surface of overhead cam 121, and the bottom end face of upper grab 122 is also provided with shackle inclined-plane 1221; The side of lower cam 131 is also provided with the guiding surface 1311 that can fit with shackle inclined-plane 1221, the oblique bottom extending to lower grab 132 of guiding surface 1311; The top of lower grab 132 have respectively to both sides tilt can with the unidirectional locked spinner latch ramp 1321 in spinner inclined-plane 1211 and can locked shackle latch ramp 1322 unidirectional with shackle inclined-plane 1221.
The operating principle of the casing pipe running device in this embodiment is: overlap 13 relatively rotate by epirelief wheel case 12 and lower cam, epirelief wheel case 121 and lower cam overlap the switching forming snap close state and trip status between 131; Specifically:
In snap close state, epirelief wheel case 12 and lower cam overlap 13 and are engaged by upper grab 122 and lower grab 132 clamping formed axially, guiding surface 1311 and shackle inclined-plane 1221 fit, and relatively rotating in the relative movement that can realize under external force axially and circumference; In addition, under snap close state, slips 11 is in the minimum state of external diameter, the non-grip sleeve 3 of the slip insert on slips 11 inwall;
At trip status, epirelief wheel case 12 and lower cam overlap 13 by relatively rotating in relative movement axially and circumference, grab 122 is made to depart from lower grab 132 clamping being engaged and departing from axially, and it is unidirectional locked that the bottom surface of overhead cam 121 and lower grab 132 are formed in axial locked and circumference, namely go up grab 122 to glide along guiding surface 1311 under external force, depart from lower grab 132 and be engaged, spinner inclined-plane 1211 is by rotating with spinner latch ramp 1321 unidirectional locked relative to spinner latch ramp 1321 to first direction, shackle inclined-plane 1221 is by rotating with shackle latch ramp 1322 unidirectional locked relative to shackle latch ramp 1322 to second direction, first direction is different from second direction, and first direction and second direction are clockwise direction or counter clockwise direction, in addition, under trip status, slips 11 expands and is in the maximum state of external diameter, and slip insert clamping sleeve pipe 3 inwall on slips 11, can carry out spinner operation or shackle operation.
Further, overhead cam 121 and spinner inclined-plane 1211 are arc, and all extend along the circumferencial direction of epirelief wheel case 12, and spinner inclined-plane 1211 is downward-sloping gradually in the counterclockwise direction, upper grab 122 is connected to the least significant end on spinner inclined-plane 1211, and the interior lateral buckling of the convex wheel case of upper grab 122 12; Lower cam 131 is arc, and extend along the circumferencial direction of lower cam cover 13, guiding surface 1311 tilts to lower grab 132 bottom in the counterclockwise direction obliquely by lower cam 131 bottom, spinner latch ramp 1321 is by lower grab 132 top oblique inclined downward to the right, and shackle latch ramp 1322 is by lower grab 132 top oblique inclined downward left.
Therefore, at trip status, epirelief wheel case 12 glides along guiding surface 1311 under External Force Acting downward vertically, and upper grab 122 departs from lower grab 132 and is engaged; Epirelief wheel case 12 and lower cam overlap about 13 be separated after, the epirelief that turns clockwise wheel case 12 (lower cam overlap 13 motionless), make spinner latch ramp 1321 and spinner inclined-plane 1211 unidirectional locked, namely spinner inclined-plane 1211 is by rotating unidirectional locked relative to spinner latch ramp 1321 clockwise direction, the epirelief that turns clockwise wheel case 12 (lower cam overlap 13 motionless), make shackle latch ramp 1322 and shackle inclined-plane 1221 unidirectional locked, namely shackle inclined-plane 1221 is by counterclockwise rotating unidirectional locked relative to shackle latch ramp 1322.
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, below in conjunction with accompanying drawing and preferred embodiment, to of the present utility model based on pushing up detailed description of the invention, structure, feature and the effect of driving the casing pipe running device of operation, be described in detail as follows.In addition, by the explanation of detailed description of the invention, when can to the utility model for the technological means reaching predetermined object and take and effect are goed deep into concrete understanding more, but institute's accompanying drawing be only to provide with reference to and use is described, is not used for being limited the utility model.Wherein, describe part of speech or adverbial modifier " level " and " vertically ", " upward " and " down ", or the use of " clockwise " and " counterclockwise " is also only the relative reference for the ease of organizing between term more, and also any specific direction of non-depicted to modified term limits.Identical parts, adopt identical label.
As described in Figure 1, the utility model provides a kind of casing pipe running device driving operation based on top, its casing pipe running device driven for complete mechanical, comprise locking assembly 1 and seal assembly 2 two parts, wherein lock assembly 1 to transfer to carry out sleeve pipe for lock collar 3, seal assembly 2 is for realizing the sealing of mud circulation process.
The epirelief wheel case 12 that locking assembly 1 comprises the locking mandrel 10 with centre bore and is sheathed on locking mandrel 10 outside from top to bottom successively, the lower cam coordinated with epirelief wheel case 12 overlap 13, slips 11, wherein, the outside wall surface of slips 11 has slip insert, the upper end of the centre bore of locking mandrel 10 is processed with cone button, the central tube that locking mandrel 10 drives by cone button and top is connected, and locks the passage of centre bore as mud circulation of mandrel 10.Epirelief wheel case 12 and lower cam overlap 13 such as side direction has the sleeve-shaped of gap (breach).Epirelief wheel case 12 and lower cam also compress spring 14 between overlapping 13, and epirelief wheel case 12 and lower cam overlap 13 clampings realizing axially by spring 14.
The upper end of locking mandrel 10 is also arranged with upper joint sleeve 15, upper joint sleeve 15 is connected to above epirelief wheel case 12, be connected by spline between upper joint sleeve 15 with locking mandrel 10, specifically, the lower end of upper joint sleeve 15 has annular inner convex platform and annular outer platform, annular inner convex platform is extended internally by the inwall of upper joint sleeve 15 and is formed, the internal face of annular inner convex platform has internal spline, to being provided with external splines by internal spline on the outer wall of locking mandrel 10, the external splines of locking mandrel 10 matches with the internal spline of upper joint sleeve 15, for transmitting torque; Annular outer platform is stretched out by the outer wall of upper joint sleeve 15 and is formed; Spring 14 is sheathed on the outside of epirelief wheel case 12 and lower cam cover 13, and spring 14 is pressed on upper joint sleeve 15 and lower cam overlaps between 13.
It is outside that epirelief wheel case 12 is socketed in locking mandrel 10, and be positioned at below upper joint sleeve 15, the top of epirelief wheel case 12 is annular body, the bottom of epirelief wheel case 12 is provided with two to downward-extension and the overhead cam 121 along the circumferential direction extended, overhead cam 121 is arc, in other words overhead cam 121 in the horizontal direction be projected as annular or arc, two overhead cams 121 are arranged by two upper gap intervals, namely two overhead cams 121 relatively and intervals arrange; The lower end of two overhead cams 121 is respectively equipped with a upper grab 122, and as shown in Fig. 4, Fig. 5, Fig. 6, upper grab 122 is hook-shaped in being projected as of side direction or main apparent direction, and the projection in the horizontal direction of upper grab 122 is such as arc.Wherein:
Spinner inclined-plane 1211: the bottom surface of overhead cam 121 is spinner inclined-plane 1211, spinner inclined-plane 1211 is arc or horizontal projection is annular, namely spinner inclined-plane 1211 extends along the circumferencial direction of epirelief wheel case 12, and spinner inclined-plane 1211 is downward-sloping gradually in the counterclockwise direction, it is the inclined-plane forming certain inclination angle (being greater than zero degree) with horizontal plane, therefore, spinner inclined-plane 1211 has a peak and a minimum point, the peak on spinner inclined-plane 1211 and the distance on epirelief wheel case 12 top are less than the distance on other arbitrfary point and epirelief wheel case 12 top on spinner inclined-plane 1211, the minimum point on spinner inclined-plane 1211 and the distance on epirelief wheel case 12 top are greater than the distance on other arbitrfary point and epirelief wheel case 12 top on spinner inclined-plane 1211, when epirelief wheel case 12 rotates clockwise, spinner inclined-plane 1211 can be used for locking lower cam cover 13,
Shackle inclined-plane 1221: be the end face in the outside bottom upper grab 122, upper grab 122 is connected to the least significant end on spinner inclined-plane 1211, also extended to form obliquely upward by lateral buckling in the convex wheel case 12 in one end of the minimum point on spinner inclined-plane 1211, shackle inclined-plane 1221 is positioned at the outside of grab 122, and shackle inclined-plane 1221 extends from the oblique upper of the inner side of the convex wheel case 12 of the minimum point on spinner inclined-plane 1211, namely shackle inclined-plane 1221 is consistent with the bearing of trend of upper grab 122, when epirelief wheel case 12 rotates counterclockwise, shackle inclined-plane 1221 can be used for locking lower cam cover 13,
Upper grab medial surface 1222: the inner side being positioned at grab 122, is oppositely arranged with shackle inclined-plane 1221, namely goes up the inside and outside both sides that grab medial surface 1222 and shackle inclined-plane 1221 lay respectively at grab 122.
It is outside that lower cam cover 13 is sheathed on locking mandrel 10, and be positioned at below epirelief wheel case 12, the bottom of lower cam cover 13 is annular body, the top of lower cam cover 13 is provided with two and upwards extends and the lower cam 131 along the circumferential direction extended, the projection in the horizontal direction of lower cam 131 is such as annular or arc, two lower cams 131 are arranged by two lower gap intervals, namely two lower cams 131 are relatively also arranged at interval, two lower cams 131 can corresponding stretch in the upper gap between two overhead cams 121, two overhead cams 121 can corresponding stretch in the lower gap between two lower cams 131, from front view, a left side for lower cam 131, right both sides are inclined-plane, therefore the front view of cam 131 is descended to be trapezoidal shape, the upper end of two lower cams 131 is respectively equipped with a lower grab 132, as shown in Figure 2 and Figure 3, lower grab 132 is barb-like in being projected as of side direction or main apparent direction, as shown in Fig. 4, Fig. 5, Fig. 6, the projection in the horizontal direction of lower grab 132 is such as arc, instantly, when cam 131 stretches between two overhead cams 121, two upper grab 122 correspondences be located on overhead cam 121 are engaged mutually with two that are located on lower cam 131 lower grabs 132, form clamping (snap close state), overhead cam 121, by rotating relative to lower cam 131, lower grab 132 and the bottom surface of first overhead cam 121 are locked mutually, or lower grab 132 locks (trip status) mutually with the bottom surface of second overhead cam 121.Wherein:
Lower grab medial surface 1323: be positioned at inside lower grab 132, when upper grab 122 is engaged mutually with lower grab 132, upper grab medial surface 1222 fits with lower grab medial surface 1323, namely goes up grab 122 and is engaged by interior clamping with lower grab 132;
Guiding surface 1311: the end face of lower cam 131 is provided with guiding surface 1311, guiding surface 1311 is adjacent with the outside wall surface of lower cam 131 and mutually vertical, guiding surface 1311 tilts to lower grab 132 bottom in the counterclockwise direction obliquely by lower cam 131 bottom, guiding surface 1311 tilts oblique upper (in the counterclockwise direction obliquely) to the right from the end face of the annular body of lower cam cover 13 in other words, when upper grab 122 is engaged mutually with lower grab 132, guiding surface 1311 and shackle inclined-plane 1221 fit, instantly cam is pressed when overlapping 12, upper grab 122 can glide along guiding surface 1311, epirelief wheel case 12 is rotated along clockwise direction simultaneously, grab 122 is departed from lower grab 132 be engaged, guiding surface 1311 is engaged and realizes occlusion for upper grab 122 and lower grab 132 depart from and provides guiding,
Spinner latch ramp 1321 and shackle latch ramp 1322: the top of lower cam 131 is located at by lower grab 132, both sides, the top correspondence of lower grab 132 is provided with spinner latch ramp 1321 and shackle latch ramp 1322, spinner latch ramp 1321 and shackle latch ramp 1322 intersect at the peak of lower grab 132, and to tilt respectively to both sides from the peak of lower grab 132 or extend, spinner latch ramp 1321 and shackle latch ramp 1322 are respectively by top tiltedly below and the oblique inclined downward in a left side, the extension to the right of lower grab 132 in other words, shackle inclined-plane 1221 and lower grab medial surface 1323 are oppositely arranged, spinner inclined-plane 1211 and shackle inclined-plane 1221 can corresponding coordinate locked with spinner latch ramp 1321 and shackle latch ramp 1322, lower cam cover 13 is locked to make epirelief wheel case 12, specifically, make lower cam overlap 13 to maintain static, when epirelief wheel case 12 turns clockwise, spinner inclined-plane 1211 can coordinate with the spinner latch ramp 1321 of lower grab 132 and locked, to carry out spinner operation, wherein, if angle of inclination with respect to the horizontal plane, spinner inclined-plane 1211 is identical with spinner latch ramp 1321 angle of inclination with respect to the horizontal plane, it is face contact when the two is locked, if angle of inclination with respect to the horizontal plane, spinner inclined-plane 1211 is different from spinner latch ramp 1321 angle of inclination with respect to the horizontal plane, be linear contact lay when the two is locked, when implementing, the contact of preferred face, to increase the steadiness of lock-out state, when epirelief wheel case 12 is rotated counterclockwise, shackle inclined-plane 1221 can coordinate with the shackle latch ramp 1322 of lower grab 132 and locked, to carry out shackle operation, in other words, the shackle latch ramp 1322 of the spinner latch ramp 1321 of lower grab 132 and the spinner inclined-plane 1211 of upper grab 122 and lower grab 132 is outer snap lock with the shackle inclined-plane 1221 of overhead cam 121.
Spinner guiding surface 1324: spinner guiding surface 1324 is located at the top-side of lower grab 132, adjacent with spinner latch ramp 1321, from Fig. 3, spinner guiding surface 1324 is positioned at the right side of spinner latch ramp 1321, spinner guiding surface 1324 is tiltedly inclined downward or extension to the right from the junction of itself and spinner latch ramp 1321, when carrying out spinner operation, play guide effect, namely when turning clockwise epirelief wheel case 12, can be spinner inclined-plane 1211 and provide guiding, being directed to matches with spinner latch ramp 1321 locks.
As shown in Figure 1, epirelief wheel case 12 and lower cam overlaps 13 and are all set in and locks mandrel 10 outside, epirelief wheel case 12 with lock mandrel 10 and be connected, such as the inwall of epirelief wheel case 12 is provided with internal thread, locking mandrel 10 correspondence is provided with external screw thread, and epirelief wheel case 12 is screwed together with locking mandrel 10; Upper joint sleeve 15 is fixedly connected on above epirelief wheel case 12; The outside that epirelief wheel case 12 and lower cam overlap 13 is also arranged with overcoat 16, overcoat 16 upper end is connected with upper joint sleeve 15, namely the upper end of overcoat 16 extends internally and forms annular stop portion, the top in annular stop portion is against the annular outer platform of upper joint sleeve 15, and be bolted to connection, the inwall in annular stop portion reclines mutually with the outer wall of epirelief wheel case 12, makes overcoat 16 and epirelief wheel case 12 and lower cam overlap the spring groove forming energy putting spring 14 between 13; In addition, overcoat 16 outer cover is provided with catch ring 17, and catch ring 17 is grooved, spring 14 against and be pressed between the annular stop portion of overcoat 16 and catch ring 17, the outer rim of catch ring 17 ringwise, and is coated on overcoat 16 outside, and screw can be adopted to be fixed on by catch ring 17 below lower cam cover 13.Spring 14 is sheathed on the outside of epirelief wheel case 12 and lower cam cover 13, when upper grab 122 is engaged with lower grab 132, spring 14 is in compressive state, and by the thrusting action of the restoring force of spring 14, upper grab 122 and lower grab 132 are in and sting tight, gripping orientation, when upper grab 122 and lower grab 132 depart from be engaged time, by the restoring force overcoming spring 14 make epirelief wheel case 12 and lower cam overlap 13 depart from described in clamping axially.
Again as shown in Figure 1, the lower end outer wall of locking mandrel 10 has conical outer wall face, and the upper end external diameter in conical outer wall face is less than lower end external diameter, namely the external diameter in conical outer wall face from top to bottom increases gradually, slip spider 111 is arranged with between the conical outer wall face of locking mandrel 10 and slips 11, slip spider 111 is fixedly connected with slips 11, screw can be adopted slips 11 and slip spider 111 to be fixed together from radial direction, this conical outer wall face of the inwall correspondence locking mandrel 10 of slip spider 111 is provided with conical inboard wall face, and the upper-end inner diameter in conical inboard wall face is less than bottom diameter, namely the internal diameter in conical inboard wall face from top to bottom increases gradually, to match with conical outer wall face, in the present embodiment, the conical outer wall mask of locking mandrel 10 has 3, and along locking the axially-aligned of mandrel 10, correspondingly, the conical inboard wall face of slips 11 also has 3, and be combined together with conical outer wall face one_to_one corresponding.When locking mandrel 10 and moving up, the lower end (one end that external diameter is larger) in conical outer wall face gradually near the upper end (one end that internal diameter is less) in conical inboard wall face, thus makes slips 11 expand.
Preferably, the tapering in conical outer wall face and conical inboard wall face is 1:3.
The slip sleeve 112 being sheathed on locking mandrel 10 outside is also connected with above slip spider 111, the lower end of slip sleeve 112 has (setting to the concave) step formed through undergauge, slip spider baffle ring 113 is resisted against step lower end, screw is adopted slip spider baffle ring 113 and slip sleeve 112 to be fixed together from radial direction, the top of slip spider 111 upwards protrudes out and forms fixed head 1111, can be ring-type fixing plate, fixed head 1111 stretches into and is fixed between slip sleeve 112 and slip spider baffle ring 113, specifically, slip spider baffle ring 113 is as baffle plate, the radial displacement of the fixed head 1111 of slip spider 111 is limited, the axial displacement of fixed head 1111 is limited by frame for movement, fixed head 1111 can be fixed like this, slip sleeve 112 be connected to lower cam cover 13 below, the upper end of slip sleeve 112 and lower cam overlap 13 and catch ring 17 be fixedly connected, such as can adopt soket head cap screw by catch ring 17, slip sleeve 112, lower cam overlap 13 successively cross-under fix.
As shown in Figures 2 to 6, by pressing down, on carry, rotate top and drive, the position relationship change between epirelief wheel case 12 and lower cam cover 13 is as follows:
(1) during original state, spring 14 is in compressive state, under the thrusting action of spring 14 restoring force, upper grab 122 is engaged with lower grab 132, in be snapped together, shackle inclined-plane 1221 and guiding surface 1311 fit, and upper grab medial surface 1222 fits with lower grab medial surface 1323, epirelief wheel case 12 and lower cam overlap 13 whole height minimum, as shown in Figure 2, locking mandrel 10 mates completely with slip spider 111, and the external diameter of slips 11 is minimum;
(2) instantly bear down on one when driving, locking mandrel 10 drives epirelief wheel case 12 to move down vertically, and upper grab 122 glides along guiding surface 1311, and overhead cam 121 and lower cam 131 rotate in the direction away from each other simultaneously, grab 122 is departed from lower grab 132 be engaged, as shown in Figure 3;
(3) again on carry top and drive, epirelief wheel case 12 and lower cam overlap about 13 and separate, top is driven and locking mandrel 10 can be driven to move up simultaneously, the conical outer wall face of locking mandrel 10 makes the conical inboard wall surface expansion of slip spider 111, impel slips 11 evagination, slip insert stings tightly (clamping) sleeve pipe 3 inwall;
(4) top that then turns clockwise is driven, locking mandrel 10 drives epirelief wheel case 12 to turn clockwise, the spinner inclined-plane 1211 of overhead cam 121 fastens with the spinner latch ramp 1321 of lower grab 132, top of continuing to turn clockwise is driven and is rotated until epirelief wheel case 12 cannot be rotated, now spinner inclined-plane 1211 and spinner latch ramp 1321 machinery locked (or stuck), it is the relation mutually extruded between spinner inclined-plane 1211 and spinner latch ramp 1321, namely spinner inclined-plane 1211 and spinner latch ramp 1321 apply pressure mutually, lower grab 132 is locked together by outer clamping with overhead cam 121, as shown in Figure 4, and then mandrel 10 will be locked, slips 11 and sleeve pipe 3 lock together, making it drive on top when rotating clockwise can circumferentially synchronous axial system, realize spinner operation,
(5) if need shackle operation be carried out, be rotated counterclockwise top again to drive, locking mandrel 10 drives epirelief wheel case 12 to be rotated counterclockwise, after spinner inclined-plane 1211 and spinner latch ramp 1321 depart from fastening state, the shackle inclined-plane 1221 of overhead cam 121 fastens with the shackle latch ramp 1322 of lower cam 131, continuing to be rotated counterclockwise top drives until epirelief wheel case 12 cannot be rotated, now shackle inclined-plane 1221 and shackle latch ramp 1322 machinery locked (or stuck), it is the relation mutually extruded between shackle inclined-plane 1221 and shackle latch ramp 1322, namely mutually pressure is applied between shackle inclined-plane 1221 and shackle latch ramp 1322, lower grab 132 is locked together by outer clamping with upper grab 122, as shown in Figure 5, and then mandrel 10 will be locked, slips 11 and sleeve pipe 3 lock together, making it drive on top when rotating counterclockwise can circumferentially synchronous axial system, realize shackle operation,
(6) last slow circumvolve in the other direction transfer epirelief wheel case 12, upper grab 122 is interlocked again with lower grab 132 again, as shown in Figure 6, spring 14 is in compressive state again, locking mandrel 10 mates completely with slip spider 111, slips 11 external diameter gets back to minimum state, and slip insert departs from the occlusion to sleeve pipe 3 inwall.
Again as shown in Figure 1, casing pipe running device of the present utility model also comprises the seal assembly 2 be connected to below locking assembly 1, seal assembly 2 comprises and is connected to sealing mandrel 20 below locking mandrel 10, is set in the sealing seal rubber plug 23 of mandrel 20 outside and plug fixed cover 24, wherein, sealing mandrel 20 is connected with the centre bore of locking mandrel 10, the two concentric and center-hole diameter is also identical, sealing mandrel 20 is such as threaded togather mutually with locking mandrel 10, is also arranged with retainer ring 21 at sealing mandrel 20 and the outside of locking mandrel 10 junction.
Seal rubber plug 23 is set in the outside of sealing mandrel 20, also against there being baffle ring 22 above seal rubber plug 23, baffle ring 22 is set in sealing mandrel 20 outside and is resisted against below the annular boss on sealing mandrel 20 outer wall, plug fixed cover 24 is set in sealing mandrel 20 outside and is positioned at below seal rubber plug 23, plug fixed cover 24 is threaded, in order to be fixed by the seal rubber plug be positioned at above plug fixed cover 24 23 mutually with sealing mandrel 20.
When transferring sleeve pipe 3, need to use protection joint 4, as shown in Figure 7, the inner chamber of protection joint 4 by dividing plate 41 be divided into top on be located hole 42 and bottom under be located hole 43, be above located hole 42 and under be located hole 43 and be respectively used to be located the sleeve pipe that two are treated spinner.
The above-mentioned using method of driving the casing pipe running device of operation based on top, comprises the following steps:
Steps A, snap close operation: lower caving is driven, until epirelief wheel case 12 and lower cam overlap 13 form clamping axially;
Step B, dropout operation: after steps A, continues lower caving and drives, and makes epirelief wheel case 12 and lower cam overlaps 13 and passes through relative movement axially and circumference relatively rotate disengaging clamping axially; Carry top again to drive, make epirelief wheel case 12 and lower cam overlap 13 and realize being separated up and down, slips 11 expands and clamps sleeve pipe 3 simultaneously; Rotation top is driven, and makes epirelief wheel case 12 and lower cam overlaps 13 and forms locked unidirectional locked with in circumference of axis;
Step C: continue to rotate top and drive the rotation realized sleeve pipe 3.
Wherein, in snap close operation, epirelief wheel case 12 and lower cam overlap 13 clampings in the axial direction, are that the lower grab 132 overlapping 13 by the upper grab 122 of epirelief wheel case 12 and lower cam is engaged mutually and realizes.
In addition, in dropout operation, order about the restoring force that epirelief wheel case 12 overcomes spring 14 move down vertically by continuing lower caving, go up that grab 122 glides along the guiding surface of lower cam 131, epirelief wheel case 12 is rotated relative to lower cam cover 13 simultaneously, upper grab 122 departs from lower grab 132 and is engaged.
Further, in dropout operation, epirelief wheel case 12 and lower cam overlap about 13 be separated after, if rotate top to first direction to drive, the spinner inclined-plane 1211 of overhead cam 121 is mutually locked with the spinner latch ramp 1321 of lower grab 132, continue to rotate top to first direction to drive, realize the spinner operation to sleeve pipe 3; If rotate top to second direction to drive, the shackle inclined-plane 1221 of upper grab 122 is mutually locked with the shackle latch ramp 1322 of lower grab 132, continue to rotate top to second direction to drive, realize the shackle operation to sleeve pipe 3, wherein, first direction is different from second direction, and first direction and second direction are clockwise direction or counter clockwise direction.
In addition, above-mentioned setting of casing method also comprises step D, casing pipe running device separating operation: after spinner operation or shackle operation, reversely rotate and lower caving drive, until there is relative rotation with sleeve pipe 3 in casing pipe running device, epirelief wheel case 12 and lower cam overlaps 13 snap-lock again, and now the external diameter of slips 11 is in minimum state again, and Shang Tiding drives and can make casing pipe running device disengaging sleeve pipe 3.
Below describe the concrete operation step adopting casing pipe running device of the present utility model to transfer sleeve pipe in detail:
Step 1: be located sleeve pipe.Protection joint is located hole 43 for 4 times to be sitting on the box cupling of well head grip sleeve 5; adopt routine work mode; hold well head by elevator by outstanding for sleeve pipe 3, transfer sleeve pipe 3 and be located in hole 42, until the dividing plate 41 of the screw thread lower surface contact protection joint 4 of sleeve pipe 3 to protection joint 4.
Step 2: be located the casing pipe running device driving operation based on top.Be threaded togather by the central tube that locking mandrel 10 and top are driven, lower caving is driven, and the seal assembly 2 of casing pipe running device first inserts in sleeve pipe 3, continues lower caving and drives until catch ring 17 contacts with the box cupling upper surface of sleeve pipe 3; Now go up grab 122 to be interlocked with lower grab 132, the external diameter of slips 11 is in minimum state.
Step 3: spinner operation.Concrete steps are as follows:
A () is continued lower caving and is driven, till overcoat 16 does not have relative movement with catch ring 17, in the process, upper grab 122 glides along the guiding surface 1311 of lower grab 132, spring 14 is compressed simultaneously, when overcoat 16 does not have relative movement with catch ring 17, illustrate that grab 122 slides to down the bottom of guiding surface 1311, upper grab 122 departs from lower grab 132 and is engaged;
B () Shang Tiding drives, locking mandrel 10 and epirelief wheel case 12 all move up, and locking mandrel 10 moves relative on slip spider 111, and slips 11 expands, slip insert evagination the inwall of grip sleeve 3, makes sleeve pipe 3 be fixed on slips 11 outside; When locking mandrel 10 and cannot continuing to move up under the restriction in conical outer wall face, epirelief wheel case 12 also just on move to and overlap about 13 with lower cam and be separated, namely epirelief wheel case 12 and lower cam cover 13 unlock (releasing snap close state);
C the () top that turns clockwise is driven, epirelief wheel case 12 also turns clockwise, until spinner inclined-plane 1211 is locked with spinner latch ramp 1321 machinery, epirelief wheel case 12 and lower cam overlap 13 and also lock together;
D () Shang Tiding drives and sleeve pipe 3, taken out by protection joint 4;
E under (), caving is driven and sleeve pipe 3, top of continuing to turn clockwise is driven, can by sleeve pipe 3 with well head grip sleeve 5 spinner, link closely, thus complete spinner operation.
Step 4: casing job.After sleeve pipe 3 and well head grip sleeve 5 spinner, circulating mud, (power slip is positioned at well head to unclamp power slip, be used for revolving the sleeve pipe holding lower going-into-well), carry out normal casing job, sleeve pipe 3 is transferred to well head, power slip clamps sleeve pipe 3.
If need shackle operation be carried out, such as, sleeve pipe be hampered cannot transfer to design attitude need propose sleeve pipe 3, now need shackle, continue perform following steps 5:
Step 5: shackle operation.Be rotated counterclockwise top to drive, epirelief wheel case 12 is also rotated counterclockwise, until shackle inclined-plane 1221 is locked with shackle latch ramp 1322 machinery, epirelief wheel case 12 and lower cam overlap 13 and also lock together, continue to be rotated counterclockwise top to drive, by sleeve pipe 3 and well head grip sleeve 5 shackle, thus shackle operation can be completed.
Step 6: tubing string separating operation.Reverse slow circumvolve also lower caving drives, until instrument transferred by sleeve pipe and relatively rotation place appears in sleeve pipe 3, now initial mated condition is got back in the locking conical outer wall face of mandrel 10 and the conical inboard wall face of slip spider 111, the external diameter of slips 11 is in minimum state again, slip insert departs from the clamping to sleeve pipe 3 inwall, on carry top and drive, upper grab 122 is interlocked again with lower grab 132, and epirelief wheel case 12 and lower cam overlap 13 and get back to initial lock-out state.
Step 7: repeat above-mentioned operation, until the end of job.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.And it should be noted that, each ingredient of the present utility model is not limited in above-mentioned overall applicability, the each technical characteristic described in manual of the present utility model can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the utility model covers other relevant with this case inventive point in the nature of things and combines and embody rule.

Claims (12)

1. drive a casing pipe running device for operation based on top, it is characterized in that, described casing pipe running device comprises locking assembly, and described locking assembly comprises:
Locking mandrel, has the centre bore run through vertically;
Slips, is set in described locking mandrel exterior, at the outside sheathed sleeve pipe of described slips;
Epirelief wheel case, is socketed in described locking mandrel exterior;
Lower cam cover, is set in described locking mandrel exterior, and described lower cam cover to be positioned at below described epirelief wheel case and to be connected with described slips;
Wherein, described epirelief wheel case and described lower cam cover, by relatively rotating, realize the switching of snap close state and trip status;
In snap close state, described epirelief wheel case and described lower cam overlap the clamping formed axially;
At trip status, described epirelief wheel case and described lower cam overlap depart from described in clamping axially, what formed in axial locked and circumference is unidirectional locked, and described slips clamps described sleeve pipe.
2. drive the casing pipe running device of operation as claimed in claim 1 based on top, it is characterized in that, described epirelief wheel case lower end is provided with overhead cam, and described overhead cam lower end is provided with grab;
Described lower cam set upper side is provided with lower cam, and described lower cam upper end is provided with the lower grab that can be engaged mutually with described upper grab;
In snap close state, described epirelief wheel case and described lower cam cover are engaged by described upper grab and described lower grab the clamping formed axially;
At trip status, described upper grab departs from described lower grab and is engaged, and the bottom surface of described overhead cam and described lower grab to be formed in axial locked and circumference unidirectional locked.
3. the casing pipe running device of operation is driven as claimed in claim 2 based on top, it is characterized in that, described overhead cam is also provided with the spinner inclined-plane be connected with described upper grab, described spinner inclined-plane is positioned at the bottom surface of described overhead cam, and the bottom end face of described upper grab is also provided with shackle inclined-plane;
The end face of described lower cam is also provided with guiding surface, the oblique bottom extending to described lower grab of described guiding surface; The top of described lower grab have respectively to both sides tilt can with the unidirectional locked spinner latch ramp in described spinner inclined-plane and can locked shackle latch ramp unidirectional with described shackle inclined-plane;
In snap close state, described upper grab is engaged mutually with described lower grab, and described guiding surface and described shackle inclined-plane fit;
At trip status, described upper grab departs from described lower grab and is engaged, and described spinner inclined-plane can be unidirectional locked with described spinner latch ramp, and described shackle inclined-plane can be unidirectional locked with described shackle latch ramp.
4. the casing pipe running device of operation is driven as claimed in claim 3 based on top, it is characterized in that, described overhead cam and described spinner inclined-plane are arc, and all extend along the circumferencial direction of described epirelief wheel case, described spinner inclined-plane is downward-sloping gradually in the counterclockwise direction, described upper grab is connected to the least significant end on described spinner inclined-plane, and described upper grab is to lateral buckling in described epirelief wheel case;
Described lower cam is arc, and extend along the circumferencial direction of described lower cam cover, described guiding surface tilts to described lower grab bottom in the counterclockwise direction obliquely by described lower cam bottom, described spinner latch ramp is by described lower grab top oblique inclined downward to the right, and described shackle latch ramp is by described lower grab top oblique inclined downward left.
5. the casing pipe running device driving operation based on top as described in any one of claim 2 to 4, is characterized in that, described overhead cam is two and is arranged by two upper gap intervals, and described lower cam is two and is arranged by two lower gap intervals;
In snap close state, described lower cam stretches in the upper gap between two described overhead cams, described overhead cam stretches in the lower gap between two described lower cams, and two the described upper grab correspondences be located on described overhead cam are engaged mutually with two that are located on described lower cam described lower grabs;
At trip status, described lower grab locks mutually with the bottom surface of first described overhead cam, or described lower grab locks mutually with the bottom surface of second described overhead cam.
6. the casing pipe running device driving operation based on top as described in any one of Claims 1-4, is characterized in that, compress spring between described epirelief wheel case and described lower cam overlap;
In snap close state, described spring is in compressive state, and described epirelief wheel case and described lower cam cover realize clamping axially by described spring.
7. the casing pipe running device of operation is driven as claimed in claim 6 based on top, it is characterized in that, described locking mandrel upper end is arranged with upper joint sleeve, described upper joint sleeve is connected to described overhead cam cover top, the outside of described epirelief wheel case and described lower cam cover is located at by described spring housing, and described spring compression is between described upper joint sleeve and described lower cam overlap.
8. the casing pipe running device of operation is driven as claimed in claim 7 based on top, it is characterized in that, slip spider is arranged with between described locking mandrel and described slips, described slip spider is fixedly connected with described slips, slip sleeve is connected with above described slip spider, described slip sleeve is connected to described lower cam cover below, and described spring compression is between described upper joint sleeve and described slip sleeve.
9. the casing pipe running device of operation is driven as claimed in claim 8 based on top, it is characterized in that, the lower end of described locking mandrel has conical outer wall face, the external diameter in described conical outer wall face from top to bottom increases gradually, described slip spider has the conical inboard wall face of matching with described conical outer wall face, and the internal diameter in described conical inboard wall face from top to bottom increases gradually.
10. the casing pipe running device of operation is driven as claimed in claim 8 based on top, it is characterized in that, described spring outer cover is provided with overcoat, described overcoat outer cover is provided with catch ring, described outer set upper side is connected with described upper joint sleeve, described catch ring is grooved, and described spring compression is between described overcoat and described catch ring, and described catch ring, described slip sleeve and described lower cam cover are fixedly connected.
11. as claimed in claim 1 based on pushing up the casing pipe running device driving operation, and it is characterized in that, described casing pipe running device also comprises top and drives, and the upper end of described locking mandrel is driven with described top and is connected.
12. as claimed in claim 1 based on pushing up the casing pipe running device driving operation, and it is characterized in that, described casing pipe running device also comprises the seal assembly be located at below described locking assembly, and described seal assembly comprises:
Sealing mandrel, be connected to below described locking mandrel, the centre bore of described sealing mandrel is connected with the centre bore of described locking mandrel;
Seal rubber plug, is set in described sealing mandrel exterior.
CN201420535130.0U 2014-09-17 2014-09-17 The casing pipe running device of operation is driven based on top Expired - Fee Related CN204113118U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104975810A (en) * 2015-07-14 2015-10-14 黑龙江北方双佳钻采机具有限责任公司 Totally-mechanical top-drive casing device by adoption of externally-clamping mode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104975810A (en) * 2015-07-14 2015-10-14 黑龙江北方双佳钻采机具有限责任公司 Totally-mechanical top-drive casing device by adoption of externally-clamping mode

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