CN203374205U - Slip type whipstock - Google Patents
Slip type whipstock Download PDFInfo
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- CN203374205U CN203374205U CN201320309482.XU CN201320309482U CN203374205U CN 203374205 U CN203374205 U CN 203374205U CN 201320309482 U CN201320309482 U CN 201320309482U CN 203374205 U CN203374205 U CN 203374205U
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- slips
- packing element
- cylinder
- deblocking
- core bar
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- 238000012856 packing Methods 0.000 claims abstract description 141
- 238000004873 anchoring Methods 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 210000002445 nipple Anatomy 0.000 claims description 45
- 210000004907 gland Anatomy 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 16
- 230000033001 locomotion Effects 0.000 claims description 10
- 230000001737 promoting effect Effects 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 125000006850 spacer group Chemical group 0.000 description 9
- 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
- 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 utility model discloses a slip formula whipstock, including sending into and giving up unit, packing element sealing unit, slips anchoring unit, biography power unit and deblocking recovery unit, divide into circumference slips and axial slips, the circumference slips plays circumference anchoring effect, and the axial slips plays axial anchoring effect. The utility model discloses rely on hydraulic pressure power to make slips anchoring location, realize axial, the circumference location of whipstock, need not preset the positioning seat, the position of windowing can be adjusted according to the technological requirement.
Description
Technical field
The utility model relates to a kind of whipstock used in petroleum industry branch well drilling well operations, belongs to the downhole tool class, specifically, is a kind of slips location Recoverable slant machine.
Background technology
At present, the whipstock used in petroleum drilling operation mainly contains following three kinds:
One, expendable slip-type whipstock, such whipstock is only suitable for the window sidetracking operation, not recyclable, can not adapt to the requirement of Multilateral Wells.
Two, the Recoverable slant machine of preset orientation spool, the self-positioning recoverable oblique device as the patent No. is CN200420001963.5, mainly be comprised of orientation spool assembly, whipstock assembly; The orientation spool assembly is comprised 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, lower body, two female joint, double male joint, box cupling, whipstock upper body, inclined-plane, shear screw, mill the cone form, be designed with the concave station rank in orientation spool, its internal diameter is greater than the main hole casing inner diameter; The positioning key cover, for the diagonal cut joint pipe, is fixed in orientation spool; 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, with the external splines of the directional bond of whipstock assembly, matches.The subject matter that this technology exists is: need to when setting of casing, orientation spool be connected on sleeve pipe, the whipstock assembly docks in down-hole with orientation spool, completes 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, as the patent No. a kind of Recoverable whipstock that is CN03243553.3, 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 tail pipe simultaneously, 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 matched with the base upper end, can make the directed rear inserted base smoothly of whipstock part.The subject matter that this technology exists is: circumferentially location relies on slips anchoring, axial location relies on lower contact to insert extension hanger and realizes, the position of windowing, can not be long owing to regulating drilling rod by adjusting long drill pipe to regulate, the adjusting range of position of windowing is little, and range of application is little.
Summary of the invention
The purpose of this utility model is to overcome existing whipstock above shortcomings, and a kind of slip-type whipstock is provided.The utility model relies on hydraulic coupling to make the slips anchoring location, realizes axial, the circumferential location of whipstock, does not need preset positioning seat, and the position of windowing can be according to the technological requirement adjustment.
For achieving the above object, the technical solution adopted in the utility model 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 be fixedly connected with, sending into bar is threaded with back-off sub through the through hole in the middle of centering ring, baffle ring, guiding incline, and sending into bar and back-off sub fixes by the second shear pin, centering ring is fixed on guiding incline by the first shear pin, baffle ring is fixedly installed on to be sent on 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 cylinder, 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 cylinder, packing element is fixedly connected with the packing element gland, the packing element gland is threaded with the packing element lock sleeve, the bearing torque cylinder is threaded with connecting cylinder, connect on the bearing torque cylinder 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, be provided with the sawtooth locked with the packing element jump ring on packing element lock sleeve inwall, packing element locking pipe nipple is fixedly connected with connecting cylinder,
Described slips anchoring unit comprises anchor cylinder, upper piston, the inclined-plane cylinder, circumferential slips, axial slips, the locking cylinder, 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 cylinder is positioned at anchor cylinder, cylinder 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 anchor cylinder, circumferentially slips is arranged on and coordinates protruding with the inclined-plane cylinder in circumferential slip groove, axially slips is arranged on and coordinates protruding with the inclined-plane cylinder in axial slip groove, locking cylinder upper end is threaded with anchor cylinder, lower end is connected with tail pipe, the slips jump ring is arranged in slips locking pipe nipple, slips locking pipe nipple is fixedly connected with tail pipe, be provided with ball seat in tail pipe,
Described power transmission unit comprises power transmission cylinder and bearing torque joint, power transmission cylinder upper end is threaded with guiding incline, inside and back-off sub spline fitted, lower end and bearing torque joint mesh and fix by the 3rd shear pin, and bearing torque joint, bearing torque cylinder, connecting cylinder and anchor cylinder are threaded successively.
The utility model also comprises the deblocking recovery unit, described deblocking recovery unit comprises deblocking core bar, lower deblocking core bar, packing element fixture block and slips fixture block, back-off sub, upper deblocking core bar, lower 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 on upper deblocking core bar, corresponding first-class through hole is provided with intercommunicating pore.
Be provided with two prescriptions to all downward inclined-plane on described inclined-plane cylinder, ramp coordinates with circumferential slips, and lower inclined plane coordinates with axial slips, and circumferentially slips and axial slips are fixed by shear pin and inclined-plane cylinder respectively.
Also be arranged with spacer ring on described bearing torque cylinder, described spacer ring evenly is separated into multistage by packing element.
Connect on described upper deblocking core bar and be provided with for liquid by for promoting the second through hole of piston motion, connect on lower deblocking core bar and be provided with for liquid by for promoting the 3rd opening of lower piston motion, on the inclined-plane cylinder, corresponding the 3rd opening is provided with intercommunicating pore.
Be provided with annular groove on described upper deblocking core bar outer wall, during deblocking, the packing element fixture block is positioned at the annular groove on the deblocking core bar; Be provided with annular groove on lower deblocking core bar outer wall, during deblocking, the slips fixture block is positioned at the annular groove of lower deblocking core bar.
Employing the utility model has the advantage of:
One, adopt the unit of sending into and give up in the utility model, be connected on drill string by top connection, by drill string, send into the well depth of windowing, after the directed grappling of whipstock, ground forward tubing string, the second shear pin is cut off, and sends into the left hand thread of bar and back-off sub place and throws off, and above submits into bar, baffle ring tangles centering ring, the first shear pin is cut off, and by top connection, send into bar, centering ring, baffle ring etc. and be recycled to ground, realizes that running tool gives up.
Two, adopt the packing element sealing unit in the utility model, 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 packing element lock sleeve, make packing element be locked in the state of setting after pressure release simultaneously, sets convenient and reliable.
Three, adopt the slips anchoring unit in the utility model, when ground is suppressed, highly pressurised liquid is entered by second through hole, the 3rd opening, upper lower piston can jointly promote the inclined-plane cylinder and move down, then it is protruding with axial slips to promote circumferential slips, is anchored on 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 recovery unit in the utility model, after sidetracking completes during the recovery whipstock, fishing tool hooks on guiding incline to be carried, on power transmission cylinder, back-off sub, upper and lower deblocking core bar, carry on successively, packing element fixture block, slips fixture block are retracted, and 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, in the utility model, be provided with two prescriptions to all downward inclined-plane on described inclined-plane cylinder, ramp coordinates with circumferential slips, lower inclined plane coordinates with axial slips, circumferentially slips and axial slips are fixed by shear pin and inclined-plane cylinder respectively, coordinate by inclined-plane, improved the outwardly directed reliability of slips, and guaranteed circumferential slips and the axial outwardly directed synchronism of slips.
Six, in the utility model, on described bearing torque cylinder, also be arranged with spacer ring, described spacer ring evenly is separated into multistage by packing element, adopts this structure to make packing element stressed more even.
Seven, in the utility model, connect on described upper deblocking core bar, lower deblocking core bar and be provided with for liquid by for promoting second through hole, the 3rd opening of upper piston, lower piston motion, guaranteed the uniformity of upper and lower piston movement, 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 utility model does not need to set in advance special-purpose nipple, and the whipstock position of windowing is adjustable flexibly; Salable lower part borehole, do not stay any remnants in well after reclaiming, and the well latus rectum is unaffected.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation
In figure, be labeled as: 1, top connection; 2, send into bar; 3, centering ring; 4, baffle ring; 5, guiding incline; 6, power transmission cylinder; 7, back-off sub; 8, upper deblocking core bar; 9, bearing torque joint; 10, packing element; 11, spacer ring; 12, packing element gland; 13, bearing torque cylinder; 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 cylinder; 22, lower deblocking core bar; 23, circumferential slips; 24, baffle plate; 25, screw; 26, axial slips; 27, locking cylinder; 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, the first shear pin; B, the second shear pin; C, the 3rd shear pin; A, first-class through hole; B, second through hole; C, the 3rd opening.
The specific embodiment
Embodiment 1
A kind of slip-type whipstock, 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, 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 be fixedly connected with, sending into bar 2 is threaded with back-off sub 7 through the through hole in the middle of centering ring 3, baffle ring 4, guiding incline 5, and sending into bar 2 fixes by the second shear pin b with back-off sub 7, centering ring 3 is fixed on guiding incline by the first shear pin a, baffle ring 4 is fixedly installed on to be sent on bar, and guiding incline is threaded with back-off sub 7; This unit is connected on drill string by top connection, send into by drill string the well depth of windowing, after the directed grappling of whipstock, ground forward tubing string, 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, by 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 cylinder 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 bearing torque cylinder 13, packing element is fixedly connected with the packing element gland, packing element gland 12 is threaded with packing element lock sleeve 14, bearing torque cylinder 13 is threaded with connecting cylinder 15, connect on bearing torque cylinder 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, be provided with the sawtooth locked with the packing element jump ring on packing element lock sleeve inwall, packing element locking pipe nipple 17 is fixedly 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 packing element lock sleeve 14, make 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 cylinder 21, circumferential slips 23, axial slips 26, locking cylinder 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 cylinder is positioned at anchor cylinder 19, inclined-plane cylinder 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 anchor cylinder, circumferentially slips is arranged on and coordinates protruding with the inclined-plane cylinder in circumferential slip groove, axially slips is arranged on and coordinates protruding with the inclined-plane cylinder in axial slip groove, locking cylinder 27 upper ends are threaded with anchor cylinder 19, lower end is connected with tail pipe 33, slips jump ring 30 is arranged in slips locking pipe nipple 31, slips locking pipe nipple 31 is fixedly connected with tail pipe 33, be provided with ball seat 35 in tail pipe 33, ground is suppressed, and highly pressurised liquid is entered by B hole, C hole, and the common inclined-plane cylinder 21 that promotes of upper lower piston 20,28 moves down, and promotes circumferential slips 23 protruding with axial slips 26, is anchored on 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 cylinder 6 and bearing torque joint 9, power transmission cylinder 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 cylinder 13, connecting cylinder 15 and anchor cylinder 19 are threaded successively; The pressure that guiding incline 5 is born and torsion are delivered on circumferential slips 23 and axial slips 26.
The utility model also comprises the deblocking recovery unit, described deblocking recovery unit comprises deblocking core bar 8, lower deblocking core bar 22, packing element fixture block 16 and slips fixture block 32, back-off sub 7, upper deblocking core bar 8, lower 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 on upper deblocking core bar 8, corresponding first-class through hole is provided with intercommunicating pore.After sidetracking completes during the recovery whipstock, fishing tool hooks on guiding incline to be carried, on power transmission cylinder 6, back-off sub 7, upper and lower deblocking core bar 8,22, carry on successively, packing element fixture block 8, slips fixture block 22 are retracted, 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.
In the utility model, on described inclined-plane cylinder, be provided with two prescriptions to all downward inclined-plane, ramp coordinates with circumferential slips, and lower inclined plane coordinates with axial slips, and circumferentially slips and axial slips are fixed by shear pin and inclined-plane cylinder respectively.
In the utility model, on described bearing torque cylinder 13, also be arranged with spacer ring 11, described spacer ring 11 evenly is separated into multistage by packing element 10.
In the utility model, connect on described upper deblocking core bar 8 and be provided with for liquid by the second through hole B moved for promoting upper piston 20, connect on lower deblocking core bar 22 and be provided with for liquid by for promoting the 3rd opening C of lower piston motion, on inclined-plane cylinder 21, corresponding the 3rd opening C is provided with intercommunicating pore.
In the utility model, on described upper deblocking core bar 8 outer walls, be provided with annular groove, during deblocking, packing element fixture block 16 is positioned at the annular groove on deblocking core bar 8; Be provided with annular groove on lower deblocking core bar 22 outer walls, during deblocking, slips fixture block 32 is positioned at the annular groove of lower 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.
Embodiment 2
A kind of slips location Recoverable slant machine, mainly comprise top connection 1, send into bar 2, centering ring 3, baffle ring 4, guiding incline 5, power transmission cylinder 6, back-off sub 7, upper deblocking core bar 8, bearing torque joint 9, packing element 10, spacer ring 11, packing element gland 12, bearing torque cylinder 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 cylinder 21, lower deblocking core bar 22, circumferential slips 23, baffle plate 24, screw 25, axial slips 26, locking cylinder 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 bar 2 and be connected by left hand thread with back-off sub 7 through the hole in centering ring 3, guiding incline 5, and fix with shear pin b, centering ring 3 is connected with guiding incline 5 by the first shear pin a, sends on bar 2 and is welded with baffle ring 4.Back-off sub 7 is threaded connection successively with upper deblocking core bar 8, lower deblocking core bar 22 and ball seat 35.Power transmission cylinder 6 upper ends and guiding incline 5 are threaded connection, inner and back-off sub 7 adopts spline fitted, lower end and bearing torque joint 9 are with shear pin, the engagement of flange groove structure, bearing torque joint 9 is connected by screw thread successively with bearing torque cylinder 13, connecting cylinder 15 anchor cylinders 19, and the pressure that guiding incline 5 is born and torsion are delivered on circumferential slips 23 and axial slips 26.Bearing torque cylinder 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 arranged 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 cylinder 21 upper ends of anchor cylinder 19 inside are connected with upper piston 20 screw threads, lower end and lower piston 8 screw threads join, two groups of inclined-planes of inclined-plane cylinder 21 match with inclined-plane with one group of circumferential slips 23 and one group of axial slips 26 respectively, slips is fixing with shear pin and inclined-plane cylinder 21, and baffle plate 24 is fixed on anchor cylinder 19 external surfaces by screw 25.Locking cylinder 27 upper ends are connected with anchor cylinder 19 by screw thread, lower end is by being connected with tail pipe 33, lower piston 28 is connected by screw thread with slips lock sleeve 29, and slips jump ring 30 is arranged 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.
In the utility model, 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.
While carrying on deblocking core bar (upper deblocking core bar 8, lower 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 (upper deblocking core bar 8, lower 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 form retaining mechanism.
Slips in the utility model 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 utility model is as follows:
1, the grappling of whipstock
With drill string, whipstock is transferred in well and designed the 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, then from from the A hole of deblocking core bar 8 enter the annular space under packing element gland 12, promote packing element gland 12 up, drive packing element lock sleeve 14 up simultaneously, compression packing element 10, packing element 10 expands and sets.Meanwhile packing element lock sleeve 14 is up, inner sawtooth and 18 engagements (this engaging mechanism belongs to one-way movement mechanism,, only to advance, can not move back, and after can guaranteeing pressure release, packing element is locked to the state of setting) of packing element jump ring.When packing element sets, highly pressurised liquid enters respectively the upper annulus of upper piston 20, lower piston 28 by hole B, the C of upper deblocking core bar 8, lower deblocking core bar 22, promote descent of piston, drive inclined-plane cylinder 21 descending, inclined-plane cylinder 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 is descending, drive slips lock sleeve 29 descending, the sawtooth that it is inner and 30 engagements of slips jump ring, guarantee, after pressure release, slips is locked in to the grappling state.Whipstock location grappling finishes.
2, sending into tubing string gives up
After grappling completes, ground forward tubing string, 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 pulled off, 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, complete the window sidetracking operation.
4, whipstock reclaims
After sidetracking completes, be lowered on fishing tool and carry guiding incline 5, to drive power transmission cylinder 6 up, shear pin c is cut off, drive back-off sub 7, upper deblocking core bar 8, lower 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 respectively packing element fixture block 16 and slips fixture block 32, 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 retracted, and a whole set of whipstock is tripped out to well head.
Claims (5)
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 be fixedly connected with, send into bar (2) through centering ring (3), baffle ring (4), through hole in the middle of guiding incline (5) is threaded with back-off sub (7), and it is fixing by the second shear pin (b) with back-off sub (7) to send into bar (2), centering ring (3) is fixed on guiding incline by the first shear pin (a), baffle ring (4) is fixedly installed on to be sent on bar, guiding incline is threaded with back-off sub (7),
Described packing element sealing unit comprises packing element (10), packing element gland (12), bearing torque cylinder (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 cylinder, packing element is fixedly connected with the packing element gland, packing element gland (12) is threaded with packing element lock sleeve (14), bearing torque cylinder (13) is threaded with connecting cylinder (15), the upper perforation of bearing torque cylinder (13) is provided with for liquid by promoting the first-class through hole (A) of packing element gland motion, packing element jump ring (18) is arranged in packing element locking pipe nipple (17), be provided with the sawtooth locked with the packing element jump ring on packing element lock sleeve inwall, packing element locking pipe nipple (17) is fixedly connected with connecting cylinder (15),
Described slips anchoring unit comprises anchor cylinder (19), upper piston (20), inclined-plane cylinder (21), circumferential slips (23), axial slips (26), locking cylinder (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 cylinder is positioned at anchor cylinder (19), inclined-plane cylinder (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 anchor cylinder, circumferentially slips is arranged on and coordinates protruding with the inclined-plane cylinder in circumferential slip groove, axially slips is arranged on and coordinates protruding with the inclined-plane cylinder in axial slip groove, locking cylinder (27) upper end is threaded with anchor cylinder (19), lower end is connected with tail pipe (33), slips jump ring (30) is arranged in slips locking pipe nipple (31), slips locking pipe nipple (31) is fixedly connected with tail pipe (33), be provided with ball seat (35) in tail pipe (33),
Described power transmission unit power transmission cylinder (6) and bearing torque joint (9), power transmission cylinder (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 cylinder (13), connecting cylinder (15) and anchor cylinder (19) are threaded successively; The pressure that guiding incline (5) is born and torsion are delivered on circumferential slips (23) and axial slips (26).
2. a kind of slip-type whipstock according to claim 1, it is characterized in that: also comprise the deblocking recovery unit, described deblocking recovery unit comprises deblocking core bar (8), lower deblocking core bar (22), packing element fixture block (16) and slips fixture block (32), back-off sub (7), upper deblocking core bar (8), lower 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), the upper corresponding first-class through hole of upper deblocking core bar (8) is provided with intercommunicating pore.
3. a kind of slip-type whipstock according to claim 1 and 2, it is characterized in that: on described inclined-plane cylinder (21), be provided with two prescriptions to all downward inclined-plane, ramp coordinates with circumferential slips, lower inclined plane coordinates with axial slips, and circumferentially slips and axial slips are fixed by shear pin and inclined-plane cylinder respectively.
4. a kind of slip-type whipstock according to claim 2, is characterized in that: connect on described upper deblocking core bar (8) and be provided with for liquid by the second through hole (B) moved for promoting upper piston (20); Described lower deblocking core bar (22) is upper to be connected and is provided with for liquid by for promoting the 3rd opening (C) of lower piston (28) motion, and upper corresponding the 3rd opening (C) of inclined-plane cylinder (21) is provided with intercommunicating pore.
5. a kind of slip-type whipstock according to claim 2, it is characterized in that: be provided with annular groove on described upper deblocking core bar (8) outer wall, during deblocking, packing element fixture block (16) is positioned at the annular groove on deblocking core bar (8); Be provided with annular groove on lower deblocking core bar (22) outer wall, during deblocking, slips fixture block (32) is positioned at the annular groove of lower deblocking core bar (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320309482.XU CN203374205U (en) | 2013-05-31 | 2013-05-31 | Slip type whipstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320309482.XU CN203374205U (en) | 2013-05-31 | 2013-05-31 | Slip type whipstock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374205U true CN203374205U (en) | 2014-01-01 |
Family
ID=49836748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320309482.XU Expired - Fee Related CN203374205U (en) | 2013-05-31 | 2013-05-31 | Slip type whipstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374205U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277049A (en) * | 2013-05-31 | 2013-09-04 | 中国石油集团川庆钻探工程有限公司 | Slip type whipstock |
| CN107503685A (en) * | 2017-08-03 | 2017-12-22 | 中石化石油工程技术服务有限公司 | A kind of major diameter riser pipe windowing whipstock |
| CN107542421A (en) * | 2017-09-06 | 2018-01-05 | 中国石油集团长城钻探工程有限公司 | A kind of Hydraulic Anchorage whipstock of band circulation by-passing valve |
-
2013
- 2013-05-31 CN CN201320309482.XU patent/CN203374205U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277049A (en) * | 2013-05-31 | 2013-09-04 | 中国石油集团川庆钻探工程有限公司 | Slip type whipstock |
| CN103277049B (en) * | 2013-05-31 | 2015-08-19 | 中国石油集团川庆钻探工程有限公司 | Slip type whipstock |
| CN107503685A (en) * | 2017-08-03 | 2017-12-22 | 中石化石油工程技术服务有限公司 | A kind of major diameter riser pipe windowing whipstock |
| CN107503685B (en) * | 2017-08-03 | 2024-03-01 | 中国石油化工股份有限公司 | Major diameter riser pipe whipstock that windows |
| CN107542421A (en) * | 2017-09-06 | 2018-01-05 | 中国石油集团长城钻探工程有限公司 | A kind of Hydraulic Anchorage whipstock of band circulation by-passing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20180531 |