CN103277049A - Slip type whipstock - Google Patents
Slip type whipstock Download PDFInfo
- Publication number
- CN103277049A CN103277049A CN2013102120817A CN201310212081A CN103277049A CN 103277049 A CN103277049 A CN 103277049A CN 2013102120817 A CN2013102120817 A CN 2013102120817A CN 201310212081 A CN201310212081 A CN 201310212081A CN 103277049 A CN103277049 A CN 103277049A
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- slips
- packing element
- deblocking
- tube
- slip
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- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000004873 anchoring Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000012856 packing Methods 0.000 claims description 141
- 210000002445 nipple Anatomy 0.000 claims description 46
- 210000004907 gland Anatomy 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 16
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 9
- 230000001737 promoting effect Effects 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The invention discloses a slip-type whipstock, which comprises a feeding and releasing unit, a rubber cylinder sealing unit, a slip anchoring unit, a force transmission unit and a deblocking recovery unit, wherein the feeding and releasing unit is divided into a circumferential slip and an axial slip, the circumferential slip plays a role in circumferential anchoring, and the axial slip plays a role in axial anchoring. The invention anchors and positions the slips by hydraulic pressure, realizes axial and circumferential positioning of the whipstock, does not need to preset a positioning seat, and can adjust the windowing position according to the process requirement.
Description
Technical field
The present invention relates to a kind of whipstock of using in the petroleum industry branch well drilling well operations, belong to the downhole tool class, specifically, is that a kind of slips is located recyclable whipstock.
Background technology
At present, the whipstock that uses in the petroleum drilling operation mainly contains following three kinds:
One, expendable slip-type whipstock, such whipstock only are fit to the window sidetracking operation, and be not recyclable, can not adapt to the requirement of Multilateral Wells.
Two, presetting the recyclable whipstock of orientation spool, is the self-align recyclable whipstock of CN200420001963.5 as the patent No., mainly is made up of orientation spool assembly, whipstock assembly; The orientation spool assembly is made up of positioning key cover, orientation spool, sealing ring, top connection, and this assembly is connected with the main hole bunch tube; The whipstock assembly by target seeker, key spring, directional bond, down body, two female joint, two public pipe nipple, box cupling, whipstock upper body, inclined-plane, shear screw, mill awl and form, designing in the orientation spool has the concave station rank, its internal diameter is greater than the main hole casing inner diameter; The positioning key cover is fixed in the orientation spool for the diagonal cut joint pipe; Directional bond is fixed on the target seeker of whipstock bottom, and between target seeker and directional bond spring is housed, and the directional bond cover is processed with internal spline, matches with the external splines of the directional bond of whipstock assembly.The subject matter that this technology exists is: need when setting of casing orientation spool be connected on the sleeve pipe, the whipstock assembly docks in the down-hole with orientation spool, finishes directed location, and the orientation spool position is fixed, the whipstock position of windowing can't be adjusted temporarily, and practicality is not strong.
Three, rely on the whipstock of tail pipe location, be a kind of recoverable whipstock of CN03243553.3 as the patent No., the base lower end is connected with bottom branch well hole completion tail pipe tubing string, during bottom branch well hole completion practice it is lowered to simultaneously with tail pipe, the base upper end of supporting as whipstock is processed with special internal spline, when the branch well hole sidetracking of needs top, orientable insertion whipstock part, the orientation of whipstock part is inserted the mandrel lower end and is processed with the special spline structure that matches with the base upper end, can make the directed back of whipstock part insert base smoothly.The subject matter that this technology exists is: circumferentially the location relies on slips anchoring, axial location relies on lower contact to insert extension hanger and realizes, the position of windowing is regulated by transferring long drill pipe, can not be long owing to regulate drilling rod, the adjusting range of position of windowing is little, and range of application is little.
Summary of the invention
The objective of the invention is to overcome existing whipstock above shortcomings, a kind of slip-type whipstock is provided.The present invention relies on hydraulic coupling to make the slips anchoring location, realizes axial, the circumferential location of whipstock, need not preset positioning seat, and the position of windowing can be according to the technological requirement adjustment.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of slip-type whipstock is characterized in that: comprise the unit of sending into and give up, packing element sealing unit, slips anchoring unit and power transmission unit;
Described send into and the unit of giving up comprises top connection, sends into bar, centering ring, baffle ring, guiding incline and back-off sub, top connection with send into bar and fixedly connected, sending into the through hole that bar passes in the middle of the centering ring, baffle ring, guiding incline is threaded with back-off sub, and sending into bar and back-off sub fixes by second shear pin, centering ring is fixed on the guiding incline by first shear pin, baffle ring is fixedly installed on to be sent on the bar, and guiding incline is threaded with back-off sub;
Described packing element sealing unit comprises packing element, the packing element gland, the bearing torque tube, connecting cylinder, the packing element lock sleeve, packing element locking pipe nipple and packing element jump ring, packing element and packing element gland are set on the bearing torque tube, packing element is fixedlyed connected with the packing element gland, the packing element gland is threaded with the packing element lock sleeve, the bearing torque tube is threaded with connecting cylinder, connect on the bearing torque tube and be provided with for liquid by promoting the first-class through hole of packing element gland motion, the packing element jump ring be arranged on packing element locking pipe nipple in, packing element lock sleeve inwall is provided with the sawtooth that locks with the packing element jump ring, and packing element locking pipe nipple is fixedlyed connected with connecting cylinder;
Described slips anchoring unit comprises anchor cylinder, upper piston, the inclined-plane tube, circumferential slips, axial slips, the locking tube, lower piston, the slips lock sleeve, the slips jump ring, slips locking pipe nipple and tail pipe, the packing element lock sleeve is connected with anchor cylinder by shear pin, the inclined-plane tube is positioned at anchor cylinder, tube upper end, inclined-plane and upper piston screwed connection, lower end and lower piston screwed connection, have circumferential slip groove and axial slip groove on the anchor cylinder, circumferentially slips is arranged on and cooperates protruding with the inclined-plane tube in the circumferential slip groove, axially slips is arranged on and cooperates protruding with the inclined-plane tube in the axial slip groove, locking tube upper end is threaded with anchor cylinder, the lower end is connected with tail pipe, the slips jump ring is arranged in the slips locking pipe nipple, slips locking pipe nipple is fixedlyed connected with tail pipe, is provided with ball seat in the tail pipe;
Described power transmission unit comprises power transmission tube and bearing torque joint, power transmission tube upper end is threaded with guiding incline, inside and back-off sub spline fitted, lower end and bearing torque joint are meshed and are fixed by the 3rd shear pin, and bearing torque joint, bearing torque tube, connecting cylinder and anchor cylinder are threaded successively.
The present invention comprises that also deblocking reclaims the unit, described deblocking reclaims the unit and comprises deblocking core bar, following deblocking core bar, packing element fixture block and slips fixture block, back-off sub, last deblocking core bar, following deblocking core bar and ball seat are threaded successively, packing element locking pipe nipple is fixed by packing element fixture block and connecting cylinder, slips locking pipe nipple is fixed by slips fixture block and tail pipe, and corresponding first-class through hole is provided with intercommunicating pore on the last deblocking core bar.
Described inclined-plane tube is provided with two prescriptions to all downward inclined-plane, and ramp cooperates with circumferential slips, and lower inclined plane cooperates with axial slips, and circumferentially slips and axial slips are fixed by shear pin and inclined-plane tube respectively.
Also be arranged with spacer ring on the described bearing torque tube, described spacer ring evenly is separated into multistage with packing element.
Connect on the described upward deblocking core bar and be provided with for liquid by being used for promoting second opening of piston motion.
Connect on the described deblocking core bar down and be provided with the 3rd opening that passes through to be used for promoting the lower piston motion for liquid, corresponding the 3rd opening is provided with intercommunicating pore on the inclined-plane tube.
The described deblocking core bar outer wall of going up is provided with annular groove, and the packing element fixture block is positioned at the annular groove on the deblocking core bar during deblocking; Following deblocking core bar outer wall is provided with annular groove, and the slips fixture block is positioned at the annular groove of deblocking core bar down during deblocking.
Employing the invention has the advantages that:
One, the unit of sending into and give up among employing the present invention, be connected on the drill string by top connection, send into the well depth of windowing by drill string, after the directed grappling of whipstock, the positive tube post in ground, second shear pin is cut off, send into the left hand thread of bar and back-off sub place and throw off, on submit into bar, baffle ring tangles centering ring, first shear pin is cut off, and with top connection, send into bar, centering ring, baffle ring etc. and be recycled to ground, realizes that running tool gives up.
Two, the packing element sealing unit among employing the present invention, when ground is suppressed, highly pressurised liquid enters from first-class through hole, promote the packing element gland, the packing element lock sleeve is up, the compression packing element sets, engagement on packing element jump ring and the packing element lock sleeve makes packing element be locked in the state of setting after pressure release simultaneously, sets convenient and reliable.
Three, the slips anchoring unit among employing the present invention, when ground is suppressed, highly pressurised liquid is entered by second opening, the 3rd opening, last lower piston can promote the inclined-plane tube jointly and move down, and it is protruding with axial slips to promote circumferential slips again, is anchored on the internal surface of sleeve pipe, simultaneously, the sawtooth of slips lock sleeve and the engagement of slips jump ring make slips be locked in the grappling state after pressure release, and grappling is convenient and reliable equally.
Four, the deblocking among the present invention reclaims the unit, when reclaiming whipstock after sidetracking is finished, fishing tool hooks on the guiding incline to be carried, carry on successively on power transmission tube, back-off sub, the upper and lower deblocking core bar, packing element fixture block, the withdrawal of slips fixture block, packing element locking pipe nipple, the release of slips locking pipe nipple make packing element and slips lose latching force, reach deblocking and reclaim purpose, deblocking reliable in action.
Five, among the present invention, described inclined-plane tube is provided with two prescriptions to all downward inclined-plane, ramp cooperates with circumferential slips, lower inclined plane cooperates with axial slips, circumferentially slips and axial slips are fixed by shear pin and inclined-plane tube respectively, cooperate by the inclined-plane, improved the outwardly directed reliability of slips, and guaranteed circumferential slips and the axial outwardly directed synchronism of slips.
Six, among the present invention, also be arranged with spacer ring on the described bearing torque tube, described spacer ring evenly is separated into multistage with packing element, adopts this structure to make packing element stressed more even.
Seven, among the present invention, connect on described upward deblocking core bar, the following deblocking core bar and be provided with second opening, the 3rd opening by moving for promotion upper piston, lower piston for liquid, guaranteed the uniformity of upper and lower piston motion, can significantly reduce the needed fluid pressure of slips anchoring, thereby can guarantee that circumferential slips is stressed protruding equably with axial slips.
To sum up, the present invention need not set in advance special-purpose pipe nipple, and the whipstock position of windowing is adjustable flexibly; Salable lower part borehole reclaims in the well of back and does not stay any remnants, and the well latus rectum is unaffected.
Description of drawings
Fig. 1 is structural representation of the present invention
Be labeled as among the figure: 1, top connection; 2, send into bar; 3, centering ring; 4, baffle ring; 5, guiding incline; 6, power transmission tube; 7, back-off sub; 8, go up the deblocking core bar; 9, bearing torque joint; 10, packing element; 11, spacer ring; 12, packing element gland; 13, bearing torque tube; 14, packing element lock sleeve; 15, connecting cylinder; 16, packing element fixture block; 17, packing element locking pipe nipple, 18, the packing element jump ring; 19, anchor cylinder; 20, upper piston; 21, inclined-plane tube; 22, following deblocking core bar; 23, circumferential slips; 24, baffle plate; 25, screw; 26, axial slips; 27, locking tube; 28, lower piston; 29, slips lock sleeve; 30, slips jump ring; 31, slips locking pipe nipple; 32, slips fixture block; 33 tail pipes; 34, steel ball; 35, ball seat; A, first shear pin; B, second shear pin; C, the 3rd shear pin; A, first-class through hole; B, second opening; C, the 3rd opening.
The specific embodiment
Embodiment 1
A kind of slip-type whipstock comprises the unit of sending into and give up, packing element sealing unit, slips anchoring unit and power transmission unit.
Described send into and the unit of giving up comprises top connection 1, sends into bar 2, centering ring 3, baffle ring 4, guiding incline 5 and back-off sub 7, top connection 1 with send into bar 2 and fixedly connected, sending into the through holes that bar 2 passes in the middle of the centering ring 3, baffle ring 4, guiding incline 5 is threaded with back-off sub 7, and sending into bar 2 fixes by the second shear pin b with back-off sub 7, centering ring 3 is fixed on the guiding incline by the first shear pin a, baffle ring 4 is fixedly installed on to be sent on the bar, and guiding incline is threaded with back-off sub 7; This unit is connected on the drill string by top connection, send into the well depth of windowing by drill string, after the directed grappling of whipstock, the positive tube post in ground, the second shear pin b cuts off, and sends into bar 2 and throws off with the left hand thread at back-off sub 7 places, on submit into bar, baffle ring 4 tangles centering ring 3, and shear pin a cuts off, with top connection 1, send into bar 2, centering ring 3, baffle ring 4 etc. and be recycled to ground.
Described packing element sealing unit comprises packing element 10, packing element gland 12, bearing torque tube 13, connecting cylinder 15, packing element lock sleeve 14, packing element locking pipe nipple 17 and packing element jump ring 18, packing element 10 and packing element gland 12 are set on the bearing torque tube 13, packing element is fixedlyed connected with the packing element gland, packing element gland 12 is threaded with packing element lock sleeve 14, bearing torque tube 13 is threaded with connecting cylinder 15, connect on the bearing torque tube 13 and be provided with for liquid by promoting the first-class through hole A of packing element gland motion, packing element jump ring 18 be arranged on packing element locking pipe nipple 17 in, packing element lock sleeve inwall is provided with the sawtooth that locks with the packing element jump ring, and packing element locking pipe nipple 17 is fixedlyed connected with connecting cylinder 15; Ground is suppressed, and highly pressurised liquid enters from the A hole, promotes packing element gland 12, packing element lock sleeve 14 is up, and the compression packing element sets, and the engagement on packing element jump ring 18 and the packing element lock sleeve 14 makes packing element be locked in the state of setting after pressure release simultaneously.
Described slips anchoring unit comprises anchor cylinder 19, upper piston 20, inclined-plane tube 21, circumferential slips 23, axial slips 26, locking tube 27, lower piston 28, slips lock sleeve 29, slips jump ring 30, slips locking pipe nipple 31 and tail pipe 33, packing element lock sleeve 14 is connected with anchor cylinder 19 by shear pin, the inclined-plane tube is positioned at anchor cylinder 19, inclined-plane tube 21 upper ends and upper piston 20 screwed connections, lower end and lower piston 28 screwed connections, have circumferential slip groove and axial slip groove on the anchor cylinder, circumferentially slips is arranged on and cooperates protruding with the inclined-plane tube in the circumferential slip groove, axially slips is arranged on and cooperates protruding with the inclined-plane tube in the axial slip groove, locking tube 27 upper ends are threaded with anchor cylinder 19, the lower end is connected with tail pipe 33, slips jump ring 30 is arranged in the slips locking pipe nipple 31, slips locking pipe nipple 31 is fixedlyed connected with tail pipe 33, is provided with ball seat 35 in the tail pipe 33; Ground is suppressed, and highly pressurised liquid is entered by B hole, C hole, and last lower piston 20, the 28 common inclined-plane tubes 21 that promote move down, and it is protruding with axial slips 26 to promote circumferential slips 23, is anchored on the internal surface of sleeve pipe.Simultaneously, the sawtooth of slips lock sleeve 29 and 30 engagements of slips jump ring make slips be locked in the grappling state after pressure release.
Described power transmission unit power transmission tube 6 and bearing torque joint 9, power transmission tube 6 upper ends are threaded with guiding incline 5, inside and back-off sub 7 spline fitted, lower end and bearing torque joint 9 mesh and fix by the 3rd shear pin c, and bearing torque joint 9, bearing torque tube 13, connecting cylinder 15 and anchor cylinder 19 are threaded successively; Pressure and torsion that guiding incline 5 is born are delivered on circumferential slips 23 and the axial slips 26.
The present invention comprises that also deblocking reclaims the unit, described deblocking reclaims the unit and comprises deblocking core bar 8, following deblocking core bar 22, packing element fixture block 16 and slips fixture block 32, back-off sub 7, last deblocking core bar 8, following deblocking core bar 22 and ball seat 35 are threaded successively, packing element locking pipe nipple 17 is fixing with connecting cylinder 15 by packing element fixture block 16, slips locking pipe nipple 31 is fixing with tail pipe 33 by slips fixture block 32, and corresponding first-class through hole is provided with intercommunicating pore on the last deblocking core bar 8.When reclaiming whipstock after sidetracking is finished, fishing tool hooks on the guiding incline to be carried, carry on successively on power transmission tube 6, back-off sub 7, the upper and lower deblocking core bar 8,22, packing element fixture block 8,22 withdrawals of slips fixture block, packing element locking pipe nipple 17,31 releases of slips locking pipe nipple, make packing element and slips lose latching force, reach deblocking and reclaim purpose.
Among the present invention, described inclined-plane tube is provided with two prescriptions to all downward inclined-plane, and ramp cooperates with circumferential slips, and lower inclined plane cooperates with axial slips, and circumferentially slips and axial slips are fixed by shear pin and inclined-plane tube respectively.
Among the present invention, also be arranged with spacer ring 11 on the described bearing torque tube 13, described spacer ring 11 evenly is separated into multistage with packing element 10.
Among the present invention, connect on the described upward deblocking core bar 8 and be provided with for liquid by being used for promoting the second opening B that upper piston 20 moves, connect on the following deblocking core bar 22 and be provided with the 3rd opening C by moving for the promotion lower piston for liquid, corresponding the 3rd opening C is provided with intercommunicating pore on the inclined-plane tube 21.
Among the present invention, described deblocking core bar 8 outer walls of going up are provided with annular groove, and packing element fixture block 16 is positioned at the annular groove on the deblocking core bar 8 during deblocking; Following deblocking core bar 22 outer walls are provided with annular groove, and slips fixture block 32 is positioned at the annular groove of deblocking core bar 22 down during deblocking; Make packing element locking pipe nipple 17, slips locking pipe nipple 31 lose connection, and then make packing element, slips lose coupling mechanism force and reach the deblocking purpose.
Embodiment 2
A kind of slips is located recyclable whipstock, mainly comprises top connection 1, send into bar 2, centering ring 3, baffle ring 4, guiding incline 5, power transmission tube 6, back-off sub 7, last deblocking core bar 8, bearing torque joint 9, packing element 10, spacer ring 11, packing element gland 12, bearing torque tube 13, packing element lock sleeve 14, connecting cylinder 15, packing element fixture block 16, packing element locking pipe nipple 17, packing element jump ring 18, anchor cylinder 19, upper piston 20, inclined-plane tube 21, following deblocking core bar 22, circumferential slips 23, baffle plate 24, screw 25, axial slips 26, locking tube 27, lower piston 28, slips lock sleeve 29, slips jump ring 30, slips locking pipe nipple 31, slips fixture block 32, tail pipe 33, steel ball 34, ball seat 35.
Annexation is: send into hole and the back-off sub 7 that bar 2 passes in centering ring 3, the guiding incline 5 and link to each other by left hand thread, and fix with shear pin b, centering ring 3 is connected with guiding incline 5 by the first shear pin a, sends into and is welded with baffle ring 4 on the bar 2.Back-off sub 7 and last deblocking core bar 8, deblocking core bar 22 and ball seat 35 be successively by being threaded down.Power transmission tube 6 upper ends and guiding incline 5 are by being threaded, spline fitted are adopted in inner and back-off sub 7, lower end and bearing torque joint 9 are with shear pin, the engagement of flange groove structure, bearing torque joint 9 links to each other by screw thread successively with bearing torque tube 13, connecting cylinder 15 anchor cylinders 19, and pressure and torsion that guiding incline 5 is born are delivered on circumferential slips 23 and the axial slips 26.Bearing torque tube 13 outer setting have packing element 10, spacer ring 11 and packing element gland 12, and packing element gland 12 is threaded with packing element lock sleeve 14.Packing element jump ring 18 is installed in the rectangular channel of packing element locking pipe nipple 17, and packing element locking pipe nipple 17 is fixing with connecting cylinder 15 by packing element fixture block 16, and packing element lock sleeve 14 is connected with anchor cylinder 19 by shear pin.Inclined-plane tube 21 upper ends of anchor cylinder 19 inside link to each other with upper piston 20 screw threads, lower end and lower piston 8 screw threads join, two groups of inclined-planes of inclined-plane tube 21 match with the inclined-plane with the axial slips of one group of circumferential slips 23 and a group 26 respectively, slips is fixing with shear pin and inclined-plane tube 21, and baffle plate 24 is fixed on anchor cylinder 19 external surfaces by screw 25.Locking tube 27 upper ends link to each other with anchor cylinder 19 by screw thread, the lower end is by linking to each other with tail pipe 33, lower piston 28 and slips lock sleeve 29 link to each other by screw thread, and slips jump ring 30 is installed in the rectangular channel of slips locking pipe nipple 31, and slips locking pipe nipple 31 is fixing with tail pipe 33 by slips fixture block 32.
Among the present invention, packing element 10 is positioned at the top of slips, both can play the effect of sealed lower portion well, can also prevent that the top drilling cuttings from depositing to the slips position.
When carrying on the deblocking core bar (going up deblocking core bar 8, following deblocking core bar 22), positioning wedged block (packing element fixture block 16), slips fixture block 32 return to the annular groove of deblocking core bar (going up deblocking core bar 8, following deblocking core bar 22), make packing element locking pipe nipple 17, slips locking pipe nipple 31 lose connection, and then make packing element, slips lose coupling mechanism force and reach the deblocking purpose.Packing element lock sleeve 14, slips lock sleeve 29, packing element jump ring 18, slips jump ring 30, packing element locking pipe nipple 17, slips locking pipe nipple 31, packing element fixture block 16, slips fixture block 32 etc. can be formed retaining mechanism.
Slips among the present invention comprises circumferential slips 23 and axial slips 26, and circumferentially slips 23 plays circumferential grappling effect, and axially slips 26 plays axial grappling effect.
Slips sets and promotes piston employing two-layer configuration (upper piston 20, lower piston 28), and its usefulness is significantly to reduce the needed fluid pressure of slips anchoring.
Operating principle of the present invention is as follows:
1, the grappling of whipstock
With drill string whipstock is transferred in the well design position of windowing, directed, drop into steel ball 34, ground is suppressed, highly pressurised liquid by top connection 1, send into bar 2, back-off sub 7 enters upper and lower deblocking core bar 8,22, enters the annular space under the packing element gland 12 again from the A hole from last deblocking core bar 8, it is up to promote packing element gland 12, it is up to drive packing element lock sleeve 14 simultaneously, compression packing element 10, and packing element 10 expands and sets.Meanwhile packing element lock sleeve 14 is up, inner sawtooth mesh with packing element jump ring 18 (this engaging mechanism belongs to one-way movement mechanism, namely only to advance, can not move back, can guarantee pressure release after, packing element is locked to the state of setting).When packing element sets, highly pressurised liquid is respectively by last deblocking core bar 8, following hole B, the C of deblocking core bar 22 upper annulus that enters upper piston 20, lower piston 28, promote descent of piston, it is descending to drive inclined-plane tube 21, inclined-plane tube 21 promotes circumferential slips 23 again and axially slips 26 is protruding, and then on the grappling internal surface of sleeve pipe.When lower piston 28 was descending, it was descending to drive slips lock sleeve 29, and the sawtooth that it is inner and 30 engagements of slips jump ring guarantee after the pressure release slips to be locked in the grappling state.Whipstock location grappling finishes.
2, sending into tubing string gives up
After grappling is finished, the positive tube post in ground, shear pin b is cut off, and sends into the screw thread of bar 2 and the left hand thread of back-off sub 7 and throws off.The upper lifting pipe post, baffle ring 4 drives centering rings 3 and moves up, and the shear pin a that centering ring 3 is connected with guiding incline 5 is broken, and top connection 1, sends into bar 2, centering ring 3, baffle ring 4 and gives up, and trips out well head.
3, window sidetracking
Be lowered to the drilling tool of windowing, finish the window sidetracking operation.
4, whipstock reclaims
After sidetracking is finished, be lowered to and carry guiding incline 5 on the fishing tool, to drive power transmission tube 6 up, shear pin c is cut off, drive back-off sub 7, last deblocking core bar 8, descend deblocking core bar 22 simultaneously up, at this moment packing element fixture block 16, slips fixture block 32 slip in the groove of deblocking core bar, packing element locking pipe nipple 17 and slips locking pipe nipple 31 are thrown off packing element fixture block 16 and slips fixture block 32 respectively, make packing element 10, circumferential slips 23, axial slips 26 lose coupling mechanism force, packing element 10 retractions, continue the upper lifting pipe post, slips is also withdrawn, and a whole set of whipstock is tripped out well head.
Claims (7)
1. a slip-type whipstock is characterized in that: comprise the unit of sending into and give up, packing element sealing unit, slips anchoring unit and power transmission unit;
Described send into and the unit of giving up comprises top connection (1), send into bar (2), centering ring (3), baffle ring (4), guiding incline (5) and back-off sub (7), top connection (1) with send into bar (2) and fixedly connected, send into bar (2) and pass centering ring (3), baffle ring (4), through hole in the middle of the guiding incline (5) is threaded with back-off sub (7), and it is fixing by second shear pin (b) with back-off sub (7) to send into bar (2), centering ring (3) is fixed on the guiding incline by first shear pin (a), baffle ring (4) is fixedly installed on to be sent on the bar, and guiding incline is threaded with back-off sub (7);
Described packing element sealing unit comprises packing element (10), packing element gland (12), bearing torque tube (13), connecting cylinder (15), packing element lock sleeve (14), packing element locking pipe nipple (17) and packing element jump ring (18), packing element (10) and packing element gland are set on the bearing torque tube, packing element is fixedlyed connected with the packing element gland, packing element gland (12) is threaded with packing element lock sleeve (14), bearing torque tube (13) is threaded with connecting cylinder (15), bearing torque tube (13) is gone up to connect and is provided with for liquid by promoting the first-class through hole (A) of packing element gland motion, packing element jump ring (18) be arranged on packing element locking pipe nipple (17) in, packing element lock sleeve inwall is provided with the sawtooth that locks with the packing element jump ring, and packing element locking pipe nipple (17) is fixedlyed connected with connecting cylinder (15);
Described slips anchoring unit comprises anchor cylinder (19), upper piston (20), inclined-plane tube (21), circumferential slips (23), axial slips (26), locking tube (27), lower piston (28), slips lock sleeve (29), slips jump ring (30), slips locking pipe nipple (31) and tail pipe (33), packing element lock sleeve (14) is connected with anchor cylinder (19) by shear pin, the inclined-plane tube is positioned at anchor cylinder (19), inclined-plane tube (21) upper end and upper piston (20) screwed connection, lower end and lower piston (28) screwed connection, have circumferential slip groove and axial slip groove on the anchor cylinder, circumferentially slips is arranged on and cooperates protruding with the inclined-plane tube in the circumferential slip groove, axially slips is arranged on and cooperates protruding with the inclined-plane tube in the axial slip groove, locking tube (27) upper end is threaded with anchor cylinder (19), the lower end is connected with tail pipe (33), slips jump ring (30) is arranged in the slips locking pipe nipple (31), slips locking pipe nipple (31) is fixedlyed connected with tail pipe (33), is provided with ball seat (35) in the tail pipe (33);
Described power transmission unit power transmission tube (6) and bearing torque joint (9), power transmission tube (6) upper end is threaded with guiding incline (5), inside and back-off sub (7) spline fitted, lower end and bearing torque joint (9) engagement and fixing by the 3rd shear pin (c), bearing torque joint (9), bearing torque tube (13), connecting cylinder (15) and anchor cylinder (19) are threaded successively; Pressure and torsion that guiding incline (5) is born are delivered on circumferential slips (23) and the axial slips (26).
2. slip-type whipstock according to claim 1, it is characterized in that: comprise that also deblocking reclaims the unit, described deblocking reclaims the unit and comprises deblocking core bar (8), following deblocking core bar (22), packing element fixture block (16) and slips fixture block (32), back-off sub (7), last deblocking core bar (8), following deblocking core bar (22) and ball seat (35) are threaded successively, packing element locking pipe nipple (17) is fixing by packing element fixture block (16) and connecting cylinder (15), slips locking pipe nipple (31) is fixing by slips fixture block (32) and tail pipe (33), and last deblocking core bar (8) is gone up corresponding first-class through hole and is provided with intercommunicating pore.
3. slip-type whipstock according to claim 1 and 2, it is characterized in that: described inclined-plane tube (21) is provided with two prescriptions to all downward inclined-plane, ramp cooperates with circumferential slips, lower inclined plane cooperates with axial slips, and circumferentially slips and axial slips are fixed by shear pin and inclined-plane tube respectively.
4. slip-type whipstock according to claim 1 and 2, it is characterized in that: also be arranged with spacer ring (11) on the described bearing torque tube (13), described spacer ring (11) evenly is separated into multistage with packing element (10).
5. slip-type whipstock according to claim 2, it is characterized in that: slip-type whipstock according to claim 1 is characterized in that: described upward deblocking core bar (8) is gone up to connect and is provided with for liquid by being used for second opening (B) of promotion upper piston (20) motion.
6. slip-type whipstock according to claim 2, it is characterized in that: described deblocking core bar (22) is down gone up to connect and is provided with the 3rd opening (C) that passes through to be used for promoting lower piston (28) motion for liquid, and inclined-plane tube (21) is gone up correspondence the 3rd opening (C) and is provided with intercommunicating pore.
7. according to claim 5 or 6 described slip-type whipstocks, it is characterized in that: described deblocking core bar (8) outer wall of going up is provided with annular groove, and packing element fixture block (16) is positioned at the annular groove on the deblocking core bar (8) during deblocking; Following deblocking core bar (22) outer wall is provided with annular groove, and slips fixture block (32) is positioned at the annular groove of deblocking core bar (22) down during deblocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212081.7A CN103277049B (en) | 2013-05-31 | 2013-05-31 | Slip type whipstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212081.7A CN103277049B (en) | 2013-05-31 | 2013-05-31 | Slip type whipstock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103277049A true CN103277049A (en) | 2013-09-04 |
| CN103277049B CN103277049B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310212081.7A Expired - Fee Related CN103277049B (en) | 2013-05-31 | 2013-05-31 | Slip type whipstock |
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| Country | Link |
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| CN (1) | CN103277049B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747099A (en) * | 2015-03-25 | 2015-07-01 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Screw drill locking and unlocking device |
| CN105604515A (en) * | 2016-02-29 | 2016-05-25 | 河北中荣石油机械有限责任公司 | Recyclable whipstock and recycling tool thereof |
| CN105840126A (en) * | 2016-06-21 | 2016-08-10 | 荆州市赛瑞能源技术有限公司 | Linked-release hanger delivery tool |
| CN110863793A (en) * | 2019-12-18 | 2020-03-06 | 贵州高峰石油机械股份有限公司 | Double-slip hydraulic anchoring packer for window sidetracking |
| CN111206896A (en) * | 2020-03-06 | 2020-05-29 | 西华大学 | Anchoring tool for mechanical hydraulic double-acting slope guiding device |
| CN112483041A (en) * | 2019-09-12 | 2021-03-12 | 中国石油化工股份有限公司 | Bridge plug matched with branch well |
| CN115637945A (en) * | 2022-12-23 | 2023-01-24 | 东营市瑞丰石油技术发展有限责任公司 | Branch borehole window positioning tool |
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| US5829531A (en) * | 1996-01-31 | 1998-11-03 | Smith International, Inc. | Mechanical set anchor with slips pocket |
| GB2340519A (en) * | 1998-08-03 | 2000-02-23 | Smith International | Deflector tool |
| CN2668822Y (en) * | 2003-12-24 | 2005-01-05 | 中国石化胜利油田有限公司井下作业公司 | Side-drilling windowing whipstock |
| CN203374205U (en) * | 2013-05-31 | 2014-01-01 | 中国石油集团川庆钻探工程有限公司 | Slip type whipstock |
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| US5829531A (en) * | 1996-01-31 | 1998-11-03 | Smith International, Inc. | Mechanical set anchor with slips pocket |
| GB2340519A (en) * | 1998-08-03 | 2000-02-23 | Smith International | Deflector tool |
| CN2668822Y (en) * | 2003-12-24 | 2005-01-05 | 中国石化胜利油田有限公司井下作业公司 | Side-drilling windowing whipstock |
| CN203374205U (en) * | 2013-05-31 | 2014-01-01 | 中国石油集团川庆钻探工程有限公司 | Slip type whipstock |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747099A (en) * | 2015-03-25 | 2015-07-01 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Screw drill locking and unlocking device |
| CN105604515A (en) * | 2016-02-29 | 2016-05-25 | 河北中荣石油机械有限责任公司 | Recyclable whipstock and recycling tool thereof |
| CN105840126A (en) * | 2016-06-21 | 2016-08-10 | 荆州市赛瑞能源技术有限公司 | Linked-release hanger delivery tool |
| CN112483041A (en) * | 2019-09-12 | 2021-03-12 | 中国石油化工股份有限公司 | Bridge plug matched with branch well |
| CN110863793A (en) * | 2019-12-18 | 2020-03-06 | 贵州高峰石油机械股份有限公司 | Double-slip hydraulic anchoring packer for window sidetracking |
| CN111206896A (en) * | 2020-03-06 | 2020-05-29 | 西华大学 | Anchoring tool for mechanical hydraulic double-acting slope guiding device |
| CN111206896B (en) * | 2020-03-06 | 2021-07-23 | 西华大学 | Anchoring tool for mechanical hydraulic double-acting slope guiding device |
| CN115637945A (en) * | 2022-12-23 | 2023-01-24 | 东营市瑞丰石油技术发展有限责任公司 | Branch borehole window positioning tool |
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|---|---|
| CN103277049B (en) | 2015-08-19 |
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