CN104929521A - Top drive lower sleeve device - Google Patents
Top drive lower sleeve device Download PDFInfo
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- CN104929521A CN104929521A CN201510312492.2A CN201510312492A CN104929521A CN 104929521 A CN104929521 A CN 104929521A CN 201510312492 A CN201510312492 A CN 201510312492A CN 104929521 A CN104929521 A CN 104929521A
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Abstract
A top drive lower sleeve device mainly consists of a bearing body and a clamping tool, wherein the bearing body is in threaded connection with a mandrel of a top drive and is communicated with a water hole of the top drive. The clamping tool comprises no less than two groups of clamping tool teeth, the clamping tool teeth are radially and evenly distributed in the bearing body, and the clamping tool teeth and the bearing body form a plane threaded pair. The cross section of the clamping tool body is wedge-shaped, and the clamping tool teeth are in sliding connection with the clamping tool body. The top drive lower sleeve device ingeniously utilizes the plane threaded pair to convert rotation of the mandrel of the top drive into radial movement of the clamping tool in the bearing body and utilizes sliding of the clamping tool teeth on the wedge-shaped face of the clamping tool body to enable the radial size to be further increased and achieve meshing between the clamping tool teeth and a sleeve. A diameter change range of an envelope circle formed by a motion track of the clamping tool teeth is greater than the diameter change range of a common wedge-shaped face, so that casting pipes identical in specification and different in wall thickness are clamped, or even casing pipes having not large change on clamping specification are clamped. Therefore, the top drive lower sleeve device has better adaptability and is free of hydraulic drive and more environment-friendly.
Description
Technical field
The present invention relates to top and drive casing pipe running device, be the special purpose device that the rig driven with top carries out setting of casing operation, belong to oil gas production equipment technical field.
Background technology
In order to packing stratum, Reinforcing Shaft, every mouthful of Oil/gas Well all will carry out corresponding setting of casing (namely sleeve pipe being coupled together and G.I.H), well cementing operation after having bored.The setting of casing time of a bite well accounts for 12 ~ 20% of total rig time.Therefore cased automaticity produces considerable influence to drilling completion efficiency.
Conventional cased method is: use simple and easy elevator to promote single sleeve pipe; Install retaining ring make-up; Use the single sleeve pipe of hydraulic casing tongs rotary top to complete the upper button of sleeve pipe when connecting; Start top air operated slips, unclamp lower floor air operated slips, make the total weight of top air operated slips support set tubing string, transfer casing string; In time on request in casing string, note mud, complete a sleeve pipe G.I.H.Repeat above flow process, until whole sleeve pipe is connected also at the bottom of lower going-into-well.
Conventional cased method effectively can be joined together to form casing string G.I.H by single for sleeve pipe, but still there is following problem: (1) sleeve pipe spinner is complicated, labour intensity is large and moment of torsion not easily accurately controls, the excessive destructive envelope pipe thread of moment of torsion, the sleeve pipe that do not link closely on moment of torsion is too small causes leakage; (2) because top air operated slips is without slurry channel, cause in cased process and can not realize rotation limit, limit circulating mud, under sleeve pipe, easily cause the down-hole accidents such as sticky card less than the position of specifying due to long-time inertia casing string; (3) casing job efficiency is not high, and labour intensity is large and need high-altitude application, therefore there is great potential safety hazard.
Along with pushing up the birth of driving, top is driven setting of casing and is just arisen at the historic moment.As Chinese patent literature CN101487277B discloses the cased method of one top-drive drilling, describe the structure that a kind of hydraulic-driven slips opens and regains.As Chinese patent literature CN 202249762 U discloses a kind of inner-clamping type top-driving casing pipe running device, its basic structure is the same with CN101487277B, difference be slips make into can the slips of spot replace to improve its compliance.Casing pipe running device is driven on the top of above-mentioned two patents, improves the automaticity of casing job, and brill completion efficiency gets a promotion, labour intensity is reduced, and part solves the foregoing problems that conventional setting of casing runs into.
But the top of above-mentioned two patents is driven casing pipe running device and all adopted hydraulic-driven, easy oil leakage contaminated environment, and hydraulic oil is larger by such environmental effects.In addition, the clamping range of the slips in above-mentioned two patents is less, can not adapt to the use of multiple caliber sleeve pipe.
Summary of the invention
The invention reside in and improve the automaticity of casing job, and solve existing top and drive casing pipe running device contaminated environment and the less problem of the scope of application.
For this reason, the invention provides a kind of top and drive casing pipe running device, primarily of carrying main body and slips composition, carrying main body and push up the mandrel thread of driving and is connected, is connected with the hydrophthalmia that top is driven, and slips is arranged on and carries in main body and through radial displacement and sleeve pipe clutch; Slips forms about carrying main body place center line is uniform primarily of slip insert, the slips main body being no less than 2 groups; Wherein the cross section of slips main body is wedge shape, and its both ends of the surface have the tooth arcuation flat thread determined radius and be equally spaced; The external surface of slip insert have the tooth engageable with sleeve pipe; Slide rail and/or slideway connection is formed between slip insert, slips main body; Carrying main body has and identical with slips quantity anti-ly turns round draw-in groove, carrying main body has two parallel ring surfaces of band flat thread; Above-mentioned slips is arranged on carrying the anti-of main body and turns round in draw-in groove, and it is secondary that above-mentioned slips midplane screw thread and carrying main body midplane screw thread form flat thread.
The top of this invention is driven in casing pipe running device, and the mandrel thread that carrying main body and top are driven is connected, and pushes up the rotation rotarily driving carrying main body of the mandrel driven.Slips radial equipartition is in carrying main body, and and two ring surfaces formation flat threads pairs of carrying main body.When carrying main body and rotating forward, slips is radial under the effect of flat thread to be expanded until tooth bites internal surface of sleeve pipe.Carrying main body further rotate and sleeve pipe deadweight under, slip insert is slide downward on the slide rail and/or slideway of the lozenges of slips main body, radial dimension expand further until hold tightly sleeve pipe formed engagement.When carrying main body and reversely rotating, slips radial direction under the effect of flat thread reduces, and gomphiasis opens internal surface of sleeve pipe; Slips returns initial position under carrying main body further rotates.
Therefore, casing pipe running device is driven on the top of this invention, make use of the rotation that flat thread adjutant pushes up the mandrel driven cleverly and be converted into slips moving radially in carrying main body, and then utilize the slip of slip insert on the lozenges of slips main body radial dimension is expanded further and reaches the engagement with sleeve pipe.In this invention, the excursion of the envelope circular diameter that slip insert movement locus is formed is more much bigger than the diameter excursion of common lozenges, so just can clamp the sleeve pipe of any wall thickness of same specification, even can clamp the little sleeve pipe of specifications vary, therefore there is stronger compliance, and without hydraulic-driven, more environmental protection.
As further improvement, casing pipe running device is driven on the top of this invention, is further characterized in that above-mentioned slips main body both sides have groove, is provided with the anti-lost ring through being bolted to carrying main body in groove.Drop from anti-turning round draw-in groove when can prevent slips main body radial direction from expanding like this.
As further improvement, casing pipe running device is driven on the top of this invention, is further characterized in that above-mentioned slips main body is provided with stopper slot or limited block.The relative displacement range of slip insert in slips main body can be limited like this.
As a kind of preferred version, the top of this invention is driven in casing pipe running device, and above-mentioned carrying main body comprises conversion head, conversion overcoat, carrying main shaft, supporting body, lower main body; Wherein, internal thread is established on the top of conversion head; The bottom of conversion head is provided with external splines; The lower surface surrounding of the bottom of conversion head is also provided with gear shaping one; Conversion is outer is arranged with internal spline, and when conversion head moves down, external splines inserts internal spline, and conversion head and conversion overcoat form spline joint; The bottom of conversion overcoat has external screw thread, and the top of supporting body has internal thread, and conversion overcoat and supporting body are formed and be threaded; The upper surface of carrying main shaft is provided with gear shaping two; When conversion head moves down, gear shaping one engages with gear shaping two, and conversion head and carrying main shaft are formed can being fixedly connected with of clutch; The bottom of supporting body is evenly equipped with 3 and prevents turning round draw-in groove; Lower main body and carrying main shaft axiality are fixed; The carrying lower surface of main shaft and the upper surface of lower main body are ring surface, have the flat thread in involute curve.
Like this, be divided into multiple component to combine carrying main body, be not only beneficial to manufacture, processing, convenient installation, maintenance, can realize clutch operation simultaneously, and be beneficial to optimization function power.
As further optimization, above-mentioned carrying main body also comprises two stop pins; The hydrophthalmia both sides, bottom of conversion head have two stop pin connecting holes, and the hydrophthalmia both sides, top of carrying main shaft have two stop pin fixing holes, slide in one end of two stop pins in stop pin connecting hole, and the other end is fixed in the stop pin fixing hole of carrying main shaft.This prevents carrying main shaft and produce relative rotation with between conversion head, ensure that the accurate centering clutch of gear shaping one and gear shaping two.
As further optimization, above-mentioned carrying main body also comprises extension spring, and extension spring one end is fixed on supporting body, and the other end is connected with slip insert.The deadweight of an extension spring carrying slip insert part, to make slip insert maintain a certain distance in original state and limited block, reserves enough spaces for producing of short duration skidding in single sleeve pipe and slip insert engagement process.
As preferred further, the cross section of above-mentioned slips main body, slip insert is three sections of wedge shapes, slips main body has dovetail groove, slip insert is provided with dovetails, dovetails and dovetail groove form slide rail and/or slideway, be convenient to the slip of slip insert in slips main body like this, facilitate in single sleeve pipe and slip insert engagement process to produce and skid.
As further optimization, above-mentioned carrying main body also comprises intubate, and intubate is positioned at the hydrophthalmia of above-mentioned conversion head, and when conversion head moves up and down, intubate forms movable sealing to hydrophthalmia sidewall, prevents side leakage.
As further optimization, above-mentioned carrying main body also comprises the bearing screwed cap be connected with above-mentioned carrying spindle thread, and is installed on the locking hoop on above-mentioned carrying main shaft.Bearing screwed cap is mainly used for carrying the weight of casing string.Locking hoop is arranged in the draw-in groove of carrying main shaft, plays a locking effect to bearing screwed cap.
As further optimization, above-mentioned carrying main body also comprises sealing guidance set, and sealing guidance set is threaded on above-mentioned carrying main shaft.Sealing guidance set drives on top when casing pipe running device inserts single sleeve pipe and plays guide effect, plays self-packing effect time after casing pipe running device insertion sleeve pipe is driven on top at circulating mud.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is that the operating diagram of casing pipe running device on rig is driven on top of the present invention, for clarity sake, have employed the simple and easy technique of painting and eliminate parts thereof to rig;
Fig. 2 is the structure chart that casing pipe running device is driven on top of the present invention, for clarity sake, have employed and analyses and observe the technique of painting;
Fig. 3 is M place partial enlarged drawing in Fig. 2;
Fig. 4 is A direction view in Fig. 2, for clarity sake, eliminates parts thereof and have employed the amplification technique of painting;
Fig. 5 is the structural blast figure that casing pipe running device is driven on top of the present invention, for clarity sake, eliminates parts thereof, and wherein slips main body, slip insert only have one group of explosion;
Fig. 6 is the stereogram that slips main body in casing pipe running device is driven on this top;
Fig. 7 is the stereogram that slip insert in casing pipe running device is driven on top of the present invention.
Wherein, 1 for driving on top, 2 for driving casing pipe running device in top, 21 is conversion head, 21-1 is external splines, 21-2 is internal thread, 22 is intubate, 23 is conversion overcoat, 23-1 is internal spline, 24 is stop pin, 24-1 is stop pin connecting hole, 25 is carrying main shaft, 25-1 is plane internal thread one, 26 is bearing, 27 is supporting body, 27-1 turns round draw-in groove for anti-, 27-2 is chamfering, 28 is extension spring, 29 is slip insert, 29-1 is ridge, 210 is slips main body, 210-1 is plane external screw thread one, 210-2 plane external screw thread two, 211 is limited block, 212 is lower main body, 212-1 plane internal thread two, 213 is bearing screwed cap, 214 is locking hoop, 215 is anti-lost ring, 216 is sealing guidance set, 3 is lifting manipulator, 30 is hydrophthalmia, 41 is single sleeve pipe, 42 is casing string, 5 is rig floor slips.K1 is gear shaping one, K2 be gear shaping two, K3 is T-slot, and K4 is stopper slot, and V1 is dovetail groove one, V2 be dovetail groove two, V11 be dovetails one, V21 is dovetails two.
detailed description of the invention:
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As shown in Figure 1, this top is driven casing pipe running device 2 and is fixedly connected on top and drives on 1 mandrel; Lifting manipulator 3 directly to be grabbed from well site single sleeve pipe 41 to drilling floor surface and is driven casing pipe running device 2 with top and realizes centering; Top is driven 1 drive top and is driven casing pipe running device 2 and transfer together, and top is driven 1 mandrel and rotarily driven top and drive casing pipe running device 2 and hold single sleeve pipe 41 tightly; Single sleeve pipe 41 and casing string 42 are detained; Unclamp rig floor slips 5, transfer casing string 42; Top is driven 1 mandrel and is reversely rotated, and top is driven casing pipe running device 2 and unclamped casing string 42, and top is driven casing pipe running device 2 and driven with top the correct position that 1 rises to derrick; Repetition lifting manipulator 4 is caught single sleeve pipe 41 to give rise to top from well site and is driven the operation after immediately below casing pipe running device 2, transfers to shaft bottom until whole sleeve pipe is connected.
As shown in Figure 2, this top is driven casing pipe running device 2 center and is provided with hydrophthalmia 30, top drive 1 drive top drive casing pipe running device 2 rotate simultaneously mud can drive from top 1 main shaft hydrophthalmia and the top hydrophthalmia 30 that drives casing pipe running device 2 pour into casing string 42, realize limit and to trap tube edge circulating mud.
In addition, be equipped with top and drive torque sensor (not shown), can realize the accurate control of sleeve pipe spinner moment of torsion, error can be controlled in about 5/1000ths.
As shown in Fig. 2, Fig. 5, this top is driven casing pipe running device and is comprised conversion head 21, intubate 22, conversion overcoat 23, stop pin 24, carrying main shaft 25, bearing 26, supporting body 27, extension spring 28, slip insert 29, slips main body 210, limited block 211, lower main body 212, bearing screwed cap 213, locking hoop 214, anti-lost ring 215, sealing guidance set 216.
Wherein, conversion head 21 is the bicylindrical shape of inverted T shape in central cross-section, establishes the internal thread 21-2 meeting API standard in its top small column, can be threaded with the main shaft external screw thread that top drives 1, thus realizes top and drive casing pipe running device 2 and be fixedly attached to top and drive on 1.
Wherein, the bottom big column of conversion head 21 is provided with external splines 21-1, and conversion overcoat 23 is provided with internal spline 23-1.When conversion head 21 moves down, external splines 21-1 inserts internal spline 23-1, and conversion head 21 and conversion overcoat 23 form spline joint.Conversion overcoat 23 bottom has external screw thread (not marking), and supporting body 27 top has internal thread, and conversion overcoat 23 and supporting body 27 are formed and be threaded.Therefore, formed through conversion overcoat 23 and supporting body 27 can being fixedly connected with of clutch for conversion head 21.
Wherein, the lower surface surrounding of the bottom big column of conversion head 21 is also provided with gear shaping one K1, and the upper surface of carrying main shaft 25 is provided with gear shaping two K2, when conversion head 21 continues to move down, gear shaping one K1 engages with gear shaping two K2, and conversion head 21 and carrying main shaft 25 are formed can being fixedly connected with of clutch.
In addition, bottom hydrophthalmia 30 both sides of conversion head 21 have two stop pin connecting hole 24-1, and top hydrophthalmia 30 both sides of carrying main shaft 25 have two stop pin fixing hole (not shown)s.Slide in one end of two stop pins 2 in stop pin connecting hole 24-1, the other end is fixed in the stop pin fixing hole (not shown) of carrying main shaft 25, prevent carrying main shaft 25 to produce relative rotation with between conversion head 21, ensure that the accurate centering clutch of gear shaping one K1 and gear shaping two K2.
Supporting body 27 lower cylindrical is evenly equipped with 3 and anti-turns round draw-in groove 27-1, three groups of slips main bodys 210, slip insert 29 block to be placed in respectively anti-ly to be turned round in draw-in groove 27-1 and can produce radial displacement.Supporting body 27 lower cylindrical outer face has chamfering 27-2, inserts in single sleeve pipe 41 to facilitate supporting body 27.
The lower surface of carrying main shaft 25 is annular, there is plane internal thread one 25-1 in involute curve, the upper surface of slips main body 210 has tooth arcuation plane external screw thread one 210-1 determining radius and be equally spaced, and it is secondary that plane internal thread one 25-1, plane external screw thread one form the flat thread shown in Fig. 3; Lower main body 212 upper surface is annular, there is plane internal thread two 212-1 in involute curve, the lower surface of slips main body 210 has tooth arcuation plane external screw thread two 210-2 determining radius and be equally spaced, and it is secondary that plane internal thread two 212-1, plane external screw thread two 210-2 form flat thread; The secondary common moment of torsion transmitted needed for radial dimension change of above-mentioned two flat threads.When carrying main shaft 25 and lower main body 212 forward synchronous rotary, three slips main body 210 radial directions are opened; When carrying main shaft 25 and lower main body 212 reverse sync rotates, slips main body 210 radial contraction.
Intubate 22 is positioned at hydrophthalmia, is to form movable sealing when conversion head 21 moves up and down to hydrophthalmia sidewall, prevents side leakage.Bearing screwed cap 213 is connected with carrying main shaft 25 by screw thread, is mainly used for carrying the weight of casing string.Locking hoop 214 is arranged in the draw-in groove of carrying main shaft 25, plays a locking effect to bearing screwed cap 213.Sealing guidance set 216 is connected with carrying main shaft 25 by screw thread, drives when casing pipe running device inserts single sleeve pipe 41 play guide effect on top, plays self-packing effect time after casing pipe running device insertion sleeve pipe is driven on top at circulating mud.
As shown in Fig. 2, Fig. 4, Fig. 6, Fig. 7, the cross section of slips main body 210, slip insert 29 is three sections of wedge shapes.Slips main body 210 has dovetail groove one V1 and dovetail groove two V2, slip insert 29 is provided with dovetails one V11 and dovetails two V21, and dovetails one V11/ dovetails two V21 and dovetail groove one V1, dovetail groove two V2 form slide rail and slideway.In slips main body 210 two sides T-slot in be provided with the anti-lost ring 215 being bolted to supporting body 27, prevent slips main body radial direction expand time drop.Slips main body 210 is provided with stopper slot K4, and limited block 211 is arranged in stopper slot K4 to limit the relative displacement range of slip insert 29 in slips main body 210.Slip insert 29 external surface has ridge 29-1, makes single sleeve pipe 41 enough with the engaging friction power of slip insert 29.Extension spring 28 one end is fixed on supporting body 27, the other end is connected with slip insert 29, extension spring 28 carries the deadweight of slip insert 29 part, to make slip insert 29 maintain a certain distance in original state and limited block 211, reserve enough spaces for producing of short duration skidding in single sleeve pipe 41 and slip insert 29 engagement process.
As shown in Figures 1 to 7.Top is driven casing pipe running device 2 and is fixedly connected on top and drives on 1 mandrel.Lifting manipulator 3 directly to be grabbed from well site single sleeve pipe 41 to drilling floor surface and is realized automatic centering with the sealing guidance set 216 that casing pipe running device 2 is driven on top.Top is driven 1 and to be driven together with casing pipe running device 2 with top and transfer in the process inserting single sleeve pipe 41 endoporus, and supporting body 27 is sitting on single sleeve pipe 41.Conversion head 21 drives 1 with top and axially continues to transfer until gear shaping one K1 of conversion head 21 engage with gear shaping two K2 of carrying main shaft 25 along stop pin 24, pushes up the rotation torque driving 1 and is just delivered to and carries main shaft 25.Carrying main shaft 25 is connected on supporting body 27 by bearing 26.Now, top is driven the most of weight of casing pipe running device 2 and is acted on single sleeve pipe 41 by bearing 26, supporting body 27.Carrying main shaft 25 rotates, and drives lower main body 212 synchronous rotary be fixedly connected with it, and the plane internal thread carried in main shaft 25 and lower main body 212 engages with the external screw thread of the lower planes of slips main body 210.Top drives the most of weight of casing pipe running device 2 acts on single sleeve pipe frictional force by supporting body 27 for slip insert 29 and watt main body 210 provides enough initial reaction torques, thus makes the radial increase of slip insert 29, and the tooth of slip insert 29 bites the inwall of single sleeve pipe 41.Top is driven and is driven top to drive casing pipe running device 2 to rotate with single sleeve pipe 41, complete with casing string 42 on detain.
Unclamp rig floor slips 5, top is driven and is transferred single sleeve pipe 41 and casing string 42, in the process transferred by top drive 1 main shaft hydrophthalmia and the top hydrophthalmia that drives casing pipe running device 2 be in the milk in single sleeve pipe 41 and casing string 42, realize transferring while circulating mud.Single sleeve pipe 41 is transferred and is shown that rig floor slips 5 fixes single sleeve pipe 41 to using during drilling floor surface correct position, top is driven mandrel and is reversely rotated, slip insert 29 radial direction reduces, top is driven casing pipe running device 2 and is extracted from single sleeve pipe 41 inwall, top is driven casing pipe running device 2 and is driven with top the correct position that 1 rises to derrick, repetition lifting manipulator 4 is caught single sleeve pipe 41 to give rise to top from well site and is driven the operation after immediately below casing pipe running device 2, transfers to shaft bottom until whole sleeve pipe is connected.
More than casing pipe running device is driven on top, the rotation utilizing top to drive realizes slip insert 29 radial direction and expands, and after slip insert 29 bites single sleeve pipe 41 inwall, under the deadweight of casing string, drive slip insert 29 to move axially at the lozenges of slips main body 210 further, radial dimension expands further until hold casing string tightly.The excursion of the envelope circular diameter that slip insert 29 movement locus that therefore casing pipe running device is driven on top is formed is more much bigger than the diameter excursion of common lozenges, so just can clamp the sleeve pipe of any wall thickness of same specification, even can clamp the little sleeve pipe of specifications vary, therefore there is stronger compliance, and without hydraulic-driven, more environmental protection.
Be more than one of embodiments of the present invention, for those skilled in the art, do not spend performing creative labour, multiple change can be done in the basis of above-described embodiment, object of the present invention can be realized equally.But this change obviously should in the protection domain of claims of the present invention.
Claims (10)
1. push up and drive casing pipe running device, primarily of carrying main body and slips composition, the mandrel thread that carrying main body and top are driven is connected, and is connected with the hydrophthalmia that top is driven, and slips is arranged on and carries in main body and through radial displacement and sleeve pipe clutch, it is characterized in that:
Slips forms about carrying main body place center line is uniform primarily of slip insert, the slips main body being no less than 2 groups; Wherein the cross section of slips main body is wedge shape, and its both ends of the surface have the tooth arcuation flat thread determined radius and be equally spaced; The external surface of slip insert have the tooth engageable with sleeve pipe; Slide rail and/or slideway connection is formed between slip insert, slips main body;
Carrying main body has and identical with slips quantity anti-ly turns round draw-in groove, there are two parallel ring surfaces of band flat thread;
Above-mentioned slips is arranged on carrying the anti-of main body and turns round in draw-in groove, and it is secondary that above-mentioned slips midplane screw thread and carrying main body midplane screw thread form flat thread.
2. casing pipe running device is driven on top according to claim 1, it is characterized in that above-mentioned slips main body both sides have groove, is provided with the anti-lost ring through being bolted to carrying main body in groove.
3. casing pipe running device is driven on top according to claim 1 and 2, it is characterized in that above-mentioned slips main body is provided with stopper slot or limited block.
4. casing pipe running device is driven on top according to claim 3, it is characterized in that above-mentioned carrying main body comprises conversion head, conversion overcoat, carrying main shaft, supporting body, lower main body;
Wherein, internal thread is established on the top of conversion head; The bottom of conversion head is provided with external splines; The lower surface surrounding of the bottom of conversion head is also provided with gear shaping one;
Conversion is outer is arranged with internal spline, and when conversion head moves down, external splines inserts internal spline, and conversion head and conversion overcoat form spline joint;
The bottom of conversion overcoat has external screw thread, and the top of supporting body has internal thread, and conversion overcoat and supporting body are formed and be threaded;
The upper surface of carrying main shaft is provided with gear shaping two; When conversion head moves down, gear shaping one engages with gear shaping two, and conversion head and carrying main shaft are formed can being fixedly connected with of clutch;
The bottom of supporting body is evenly equipped with 3 and prevents turning round draw-in groove;
Lower main body and carrying main shaft axiality are fixed; The carrying lower surface of main shaft and the upper surface of lower main body have the flat thread in involute curve.
5. casing pipe running device is driven on top according to claim 4, it is characterized in that above-mentioned carrying main body also comprises two stop pins; The hydrophthalmia both sides, bottom of conversion head have two stop pin connecting holes, and the hydrophthalmia both sides, top of carrying main shaft have two stop pin fixing holes, slide in one end of two stop pins in stop pin connecting hole, and the other end is fixed in the stop pin fixing hole of carrying main shaft.
6. casing pipe running device is driven on the top according to claim 4 or 5, and it is characterized in that above-mentioned carrying main body also comprises extension spring, extension spring one end is fixed on supporting body, and the other end is connected with slip insert.
7. casing pipe running device is driven on top according to claim 6, and it is characterized in that slips main body, the cross section of slip insert is three sections of wedge shapes, slips main body has dovetail groove, and slip insert is provided with dovetails, and dovetails and dovetail groove form slide rail and/or slideway.
8. casing pipe running device is driven on top according to claim 7, and it is characterized in that above-mentioned carrying main body also comprises intubate, intubate is positioned at the hydrophthalmia of above-mentioned conversion head, and when conversion head moves up and down, intubate forms movable sealing to hydrophthalmia sidewall.
9. casing pipe running device is driven on top according to claim 8, it is characterized in that above-mentioned carrying main body also comprises the bearing screwed cap be connected with above-mentioned carrying spindle thread, and is installed on the locking hoop on above-mentioned carrying main shaft.
10. casing pipe running device is driven on top according to claim 9, it is characterized in that above-mentioned carrying main body also comprises sealing guidance set, and sealing guidance set is threaded on above-mentioned carrying main shaft.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510312492.2A CN104929521B (en) | 2015-06-10 | 2015-06-10 | Top drive lower sleeve device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510312492.2A CN104929521B (en) | 2015-06-10 | 2015-06-10 | Top drive lower sleeve device |
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| Publication Number | Publication Date |
|---|---|
| CN104929521A true CN104929521A (en) | 2015-09-23 |
| CN104929521B CN104929521B (en) | 2017-04-26 |
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| CN201510312492.2A Active CN104929521B (en) | 2015-06-10 | 2015-06-10 | Top drive lower sleeve device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106338438A (en) * | 2016-09-29 | 2017-01-18 | 西南石油大学 | Pipe column slip ultimate bearing capacity testing device |
| CN112627735A (en) * | 2020-11-24 | 2021-04-09 | 中国石油集团渤海钻探工程有限公司 | Top drive rotation casing pipe equipment prevents swing arm rotary mechanism down |
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| CN203729878U (en) * | 2013-12-20 | 2014-07-23 | 彭广盛 | Mechanical top-drive casing running device |
| CN104234627A (en) * | 2014-09-17 | 2014-12-24 | 中国石油天然气集团公司 | Casing device and casing method based on top drive operation |
| CN204691678U (en) * | 2015-06-10 | 2015-10-07 | 四川宏华石油设备有限公司 | Casing pipe running device is driven on top |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338438A (en) * | 2016-09-29 | 2017-01-18 | 西南石油大学 | Pipe column slip ultimate bearing capacity testing device |
| CN112627735A (en) * | 2020-11-24 | 2021-04-09 | 中国石油集团渤海钻探工程有限公司 | Top drive rotation casing pipe equipment prevents swing arm rotary mechanism down |
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