CN104727796B - A kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction method - Google Patents
A kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction method Download PDFInfo
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- CN104727796B CN104727796B CN201510092721.4A CN201510092721A CN104727796B CN 104727796 B CN104727796 B CN 104727796B CN 201510092721 A CN201510092721 A CN 201510092721A CN 104727796 B CN104727796 B CN 104727796B
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 32
- 239000004576 sand Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005488 sandblasting Methods 0.000 claims description 5
- 238000002627 tracheal intubation Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 241000372132 Hydrometridae Species 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 241000251468 Actinopterygii Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction method, its construction procedure is：Formation horizontal well can use core sliding sleeve multistage fracturing completion tubular column, and it can coring pitching fracturing sliding bush including multistage；Then each section of pressing crack construction is implemented；Well is sealed in using coiled tubing band corer, take out can be in coring pitching fracturing sliding bush its components；As needed, using coiled tubing belt switch pipe seal in well it is corresponding to water exit interval can coring pitching fracturing sliding bush carry out repeat be turned on and off operation.This construction method can realize full-bore after tubing string pressure；Step is released in tubing string than conventional bore using coiled tubing corer string and grinds that efficiency of construction is high, risk is small, it is easy to operate, using coiled tubing selective switch slide bunch tube pair can coring pitching fracturing sliding bush implement selective switch operation, be conducive to the later stage to repeat transformation, test and control water measure operation, played a significant role to playing horizontal well volume increase advantage to greatest extent.
Description
Technical field
The invention belongs to oil and gas industry horizontal well measure construction method, more particularly to a kind of horizontal well can coring cunning
Cover the construction method of multistage fracturing completion tubular column.
Background technology
With continuing to develop and continuous improvement to technological requirement for oil and gas industry technology, the pressure break of one-trip string
Series is continuously increased.Exist because horizontal well completion tubular pile has in the characteristics of can not being taken out after well, post-fracturing tubing string
Multistage sliding sleeve fuse by limit produce passage, influence the later stage test, repeat transform, be mainly manifested in the following aspects：
（1）The multi-stage stairs existed in completion tubular column, the later stage repeats transformation tubing string and the tripping in of production test instrument is difficult；（2）Completion tubular
After post water outlet, later stage control water task difficulty is big, and the volume increase advantage of horizontal well can not give full play to；（3）Completion tubular column series is more,
Tubing string passage is small, the problems such as causing production to throttle and limit the production；
In view of the above-mentioned problems, conventional mode is by boring grinding except limitation of the sliding sleeve fuse to hole diameter, but bore honed journey
There is greater risk, there may come a time when to cause high operating cost, and efficiency is low, and the later stage can not horizontal well control water measure in fact.
The content of the invention
The technical problems to be solved by the invention are a kind of pipe of not enough offer existed for above-mentioned prior art
Post takes out all sliding sleeve inner cores, realizes tubing string full-bore, for later stage production, test and repeats transformation and provides larger passage and can
With realize pitching fracturing sliding bush switch repeat switch horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction method.
The technical solution adopted in the present invention is：A kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction party
Method, it is characterised in that：It includes following construction procedure：
Step 1: formation horizontal well can use core sliding sleeve multistage fracturing completion tubular column, it includes tieback intubation, intubation packing
Device, multiple packers, multistage can coring pitching fracturing sliding bush, constant-pressure sliding sleeve, setting ball seat and ball-and-seat and guide shoe, it is described can
Coring pitching fracturing sliding bush includes top connection, outer sleeve, sandblasting joint, the lower contact being sequentially connected from top to bottom, in outer sleeve
Outer core is inside arranged with, outer core is fixedly installed on outer sleeve by cutting member, pressure break passage is provided with outer core, outside
Its components are arranged in the lower end of core, its components are connected by locking device with outer core, its components include ball seat,
Ball seat upper end is provided with connecting portion；
Step 2: pressing crack construction, is specially：Opened successively from tubing string toe-end by pressure break design requirement order input ball sealer
It is at different levels can coring pitching fracturing sliding bush, implement each section of pressing crack construction；
Step 3: after the completion of pressing crack construction, well is sealed in using coiled tubing band corer, taking-up can coring pitching pressure break cunning
Its components in set；
Step 4: after its components take out, as needed, well is sealed in going out using coiled tubing selective switch sliding sleeve pipe
Water layer section it is corresponding can coring pitching fracturing sliding bush carry out repeat be turned on and off operation.
By above-mentioned technical proposal, the bottom of the coiled tubing corer string is provided with coring joint, coring joint
For fish for can coring pitching fracturing sliding bush its components, be provided with the lower end of coring joint and fish for pawl and its components
The connecting portion of ball seat is matched, above carries the dynamic ball seat of coiled tubing band corer ribbon and moves up, can coring pitching so as to take out
Its components in fracturing sliding bush.
By above-mentioned technical proposal, connector is fixedly connected with the ball seat lower end of its components, the lower end of the connector with
The connecting portion of ball seat upper end is mutually arranged, connector be used for remove one-level can coring pitching fracturing sliding bush its components, under realization
Enter a coiled tubing and take out its components that can be in coring pitching fracturing sliding bush at different levels with corer string.
By above-mentioned technical proposal, the step 4 is specially：The coiled tubing selective switch of offer, which slides bunch tube, to be included
Derailing switch, derailing switch includes top connection, central tube, the lower contact being sequentially connected from top to down, is set with successively on central tube
Opened by pressure mechanism, closing piece, diameter changing mechanism, the opened by pressure mechanism can be fixed along central tube axial slip, the closing piece
On centrally disposed pipe, the opened by pressure mechanism is connected by pin with closing piece, the lower end suit of the opened by pressure mechanism
In the upper end of diameter changing mechanism, so that diameter changing mechanism be locked, annular slot is provided with the upper end of outer core and is selected with coiled tubing
The derailing switch set on property switching sliding sleeve pipe string is mutually arranged；Slide and extremely may be used under the derailing switch of bunch tube when coiled tubing selective switch
During the design attitude of coring pitching fracturing sliding bush, turn on pump sand washing, while slowly decentralization coiled tubing selective switch slides bunch tube,
Until derailing switch, which was descended, to improve flushing discharge capacity after the neck of coring pitching fracturing sliding bush, when hydraulic coupling reaches that the pressure of setting is pushed away
During dynamic pressure opener slides to central tube top, diameter changing mechanism unblock, the increasing radius and radial direction of diameter changing mechanism
Stretching is installed on the neck of sliding sleeve, now, is slowly above carried coiled tubing selective switch and is slided bunch tube, and observes tubing string suspending weight
Change, whether judging the diameter changing mechanism of derailing switch, be installed on can be on the outer core upper end neck of coring pitching fracturing sliding bush, and suspending weight increases
Illustrate to have dragged for carried in outer core, continuation coiled tubing selective switch slide bunch tube, when can coring pitching fracturing sliding bush close after
Suspending weight will reduce moment, and coiled tubing selective switch is carried in continuation and slides in bunch tube that suspending weight is without significant change, until will be continuous
Oil pipe selective switch slides bunch tube and takes out well head.
Having the beneficial effect that acquired by the present invention：This construction method can realize full-bore after horizontal well completion tubular pile pressure；Adopt
Step, which is released in tubing string, with coiled tubing corer string than conventional bore grinds that efficiency of construction is high, risk is small, it is easy to operate, using continuous
Oil pipe selective switch slide bunch tube pair can coring pitching fracturing sliding bush implement selective switch operation, be conducive to the later stage repeat change
Water measure operation is made, tested and controlled, is played a significant role to playing horizontal well volume increase advantage to greatest extent.
Brief description of the drawings
Fig. 1 be horizontal well can coring sliding sleeve multistage fracturing completion tubular column schematic diagram.
Fig. 2 for can coring pitching fracturing sliding bush structure chart.
Fig. 3 connects coiled tubing corer string structure schematic diagram.
Fig. 4 is that coiled tubing selective switch slides bunch tube schematic diagram.
Fig. 5 is the structural representation of derailing switch in Fig. 4.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, the present embodiment provide a kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction party
Method it comprise the following steps：
Step 1: configurations horizontal well can coring sliding sleeve multistage fracturing completion tubular column, it include tieback intubation 42, intubation
Packer 43, multiple packers 44,46,48,50,52, multistage can coring sliding sleeve 45,47,49,51, constant-pressure sliding sleeve 53, setting balls
Seat 54 and ball-and-seat and guide shoe 55.Wherein, as shown in Fig. 2 can coring pitching fracturing sliding bush include be sequentially connected from top to bottom
Top connection 1, outer sleeve 3, sandblasting joint 6, lower contact 14, outer core 4 is arranged with outer sleeve 3, the lower end of outer core 4 is extended to
In lower contact 14, dust ring 7 is provided with the two ends of the pressure break passage of the sandblasting joint 6, the upper end of outer core 4 passes through
Cutting member 2 is fixedly installed on outer sleeve 3, pressure break passage is provided with outer core 4, between the lower end of outer core 4 and outer sleeve 3
Combined seal ring 5 is provided with, the lower end of outer core 4 is connected with outer support cylinder 17, is provided with the lower end of lower contact 14 for preventing
The limited step that outer support cylinder 17 is moved downward.Be arranged its components in the lower end of outer core 4, its components by locking device with
Outer core 4 is connected, and its components include the ball seat 9, inner support cylinder 11, connector 13 being sequentially connected, and are set in the upper end of ball seat 9
There is the connecting portion being coupled with coiled tubing corer string.The connecting portion is the sawtooth internal thread 16 for being arranged on the upper end of ball seat 9.Even
Joint 13 be used to removing one-level can coring pitching fracturing sliding bush its components, the lower end of connector 13 and the connection of ball seat upper end
Portion is mutually arranged.It is provided with the lower end of connector 13 and fishes for pawl, sawtooth external screw thread is provided with pawl is fished for, the edge on pawl is fished for
Circumference, which is provided with, conveniently to be fished for pawl and occurs radially to inside contract the slot of deformation, is easy to more preferable with the sawtooth internal thread 16 of ball seat upper end
Mating.
The locking device refers to 10 including snap lock, and the upper outer end for referring to 10 in the snap lock is provided with positive stop lug boss,
The groove that clamp snap lock refers to positive stop lug boss is provided with the lower end inner wall of outer core, the limit for referring to snap lock by the lower end of ball seat
Position boss be fastened in groove, on interior support tube 11 correspondence snap lock refer to be provided with permission snap lock refer to radial direction produce inside contract
The receiving space 18 of deformation, the lower end that the snap lock refers to is fixedly installed on its components by unlocking pin 12.
Step 2: pressing crack construction, is specially：Tubing string is pressed after detail design tripping in place, and pitching sets insertion pipe packer 43
And packer 44,46,48,50,52 etc., then connect tieback oil pipe 42, and successively pitching open step by step can coring pitching
Fracturing sliding bush 45,47,49,51 etc. carries out each section of sand fracturing construction.In pressure break, after stifled ball 8 reaches ball seat 9, from oil pipe
When building the pressure to setting pressure, cut ring 2 and be sheared, outer core 4, ball seat 9, snap lock refer to 10, inner support cylinder 11, unblock pin 12, connected
Joint 13 is moved down, when the sand jet outlet on outer core 4 aligns with the sand jet outlet of sandblasting joint 6（Namely outer support cylinder 17 is moved
When to limited step）, sliding sleeve is fully opened, and fracturing fluid can enter stratum out of tubing string.
Step 3: after the completion of pressing crack construction, tripping in coiled tubing corer string, as shown in figure 3, coiled tubing corer string
Including coiled tubing 19, coiled tubing joint 20, safety joint 21, bumper jar 22, centralizer 23, counterbalance valve 24, coring
Joint 25, the lower end of wherein coring joint 25, which is provided with, fishes for pawl, and slot is circumferentially provided with pawl is fished for, and is easy to and ball seat
The sawtooth internal thread of upper end is matched, vulcanization filling elastic caoutchouc, its supporting role in slot.
When coiled tubing corer string reach can coring pitching fracturing sliding bush design attitude when, by bumper jar 22 to continuous
Apply 10~20kN power, the sawtooth of the ball seat for fishing for portion and its components of coiled tubing corer string in oil pipe corer string
Inner nut is meshed, and upper lifting pipe ribbon is moved ball seat 9 and moved up.Produced by bumper jar 22 and hit power, 40 are reached when above hitting power
During~50kN, after unblock pin 12 is sheared, coiled tubing corer string certain distance is carried in continuation, snap lock refers to 10 and lost
Lock refers to interior receipts after the support of ball seat 9, snap lock refer to 10 with outer core 4 it is contactless after, can continue above to carry coiled tubing corer string, take
Go out ball seat 9, stifled ball 8, snap lock and refer to latus rectum in the parts such as 10, support tube 11, unblock pin 12, connector 13, sliding sleeve to be extended to
Full-bore（It is consistent with the outer latus rectum of core 4）；Also can according to circumstances, continue to transfer coiled tubing corer string promote stifled ball 8, ball seat 9,
Snap lock refers to 10, support tube 11, unblock pin 12, at the ball seat 9 of connector 13 to next stage sliding sleeve, turn on pump sand washing and it is slow under
Tubing string is put, after the power for applying 10~20kN to coiled tubing corer string, connector 13 and the upper end of ball seat 9 of next stage sliding sleeve
Engagement, then upper lifting pipe post, by bumper jar 22 produce on hit power and unlock the inner core of sliding sleeve, repeat the above steps,
Until all sliding sleeve inner cores are realized unblock and docked, finally by above carrying coiled tubing corer string by core ribbon in all sliding sleeves
Go out, complete one-trip string take out it is all can coring pitching fracturing sliding bush inner core, latus rectum is recovered in tubing string.
Step 4: completing after the construction of coiled tubing coring, according to the later stage condition of production and needs, the selection of tripping in coiled tubing
Property switching sliding sleeve pipe string pair can coring pitching fracturing sliding bush carry out repeat switch operation.
Wherein, annular slot 15 is provided with the upper end of outer core 4 and slides setting on bunch tube with coiled tubing selective switch
Derailing switch mutually arrange.As shown in Figure 4,5, the coiled tubing selective switch slide bunch tube include coiled tubing 19, it is continuous
Oil connection 20, safety joint 21, bumper jar 22, communicating valve 26, centralizer 23, derailing switch 27, standby ball seat 28, back pressure
The compositions such as valve 24, rotation sand flushing tool 29.As shown in figure 4, the derailing switch 27 includes the top connection being sequentially connected from top to down
30th, central tube 33, lower contact 41, are set with opened by pressure mechanism, closing piece 36, diameter changing mechanism successively on central tube 33, described
Opened by pressure mechanism can be fixedly installed on central tube 33 along the axial slip of central tube 33, the closing piece 36, and the pressure is opened
Open mechanism by pin 37 with closing piece 36 to be connected, the lower end of the opened by pressure mechanism is sleeved on the upper end of diameter changing mechanism, so that
Diameter changing mechanism is locked.
Wherein, the opened by pressure mechanism include being sleeved on upper overcoat 31 outside central tube 33, with helping that upper overcoat is connected
Positive set 35, the inlet opening 34 opened up on central tube 33, wherein, upper overcoat 31 can along top connection 30 outer wall axial slip,
Annular space between upper overcoat 31 and central tube 33 is arranged with return spring 32, lower end and the supporting positive cover 35 of return spring
Upper-end contact, the return for opened by pressure mechanism.The inlet opening 34 is connected with the inwall of supporting positive cover 35, in inlet opening 34
Both sides be provided with sealing ring, the lower end of the supporting positive cover 35 is fixedly installed on closing piece 36 by pin 37.
The diameter changing mechanism is included along the circumferentially disposed some key blocks 38 of central tube, and the two ends of key block 38 are taper, institute
State and bow spring 39 is provided with key block 38, one end tapered portion of key block 38 is sleeved on by supporting positive cover, so that key block 38 is pressed into solid
Fixed, the other end configuration lock tube 40 of key block 38, lock tube 40 is fixed by a pin in lower contact 41.
In the present embodiment, in order to be able to smoothly start opened by pressure mechanism, set on central tube positioned at the lower section of inlet opening
There is a conical surface that internal diameter diminishes, aspect pitching builds the pressure Opening pressure opener.
Being slided when coiled tubing selective switch extremely can coring pitching fracturing sliding bush design attitude under the derailing switch 27 of bunch tube
When, turn on pump sand washing, while slowly transferring tubing string, can be improved until derailing switch 27 was descended after the neck 15 of coring pitching fracturing sliding bush
Discharge capacity is rinsed, promotes upper overcoat 31 and supporting positive cover 35 to be slid to top connection direction after hydraulic coupling is by inlet opening 34, supporting positive cover
35 during sliding, and key block 38 loses binding force, and under the elastic force effect of bow spring 39, key block 38 extends radially out and makes key block
38 are installed on the neck 15 of sliding sleeve,（When hydraulic coupling is not enough to promote the movement of opened by pressure mechanism, can pitching pitching build the pressure and make
Key block 38 is stretched out）, and slow upper lifting pipe post, and observe the change of tubing string suspending weight, whether judging the key block of derailing switch, drag for can coring
The outer upper end neck of core 4 of pitching fracturing sliding bush, suspending weight increase explanation has dragged for outer core 4, continues upper lifting pipe post, suspending weight after sliding sleeve is closed
It will reduce moment, coiled tubing switching tube string suspending weight carried in continuation without significant change, until coiled tubing is taken out into well head（Or
Load variations are had no, upper lifting pipe post is smooth）；As do not dragged for, then coiled tubing will be transferred again, derailing switch was descended into coring pitching
Fracturing sliding bush physical location, and slow upper lifting pipe post, are confirmed whether to drag for according to load variations.
Claims (4)
1. a kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction method, it is characterised in that：It includes applying as follows
Work step is rapid：
Step 1: formation horizontal well can use core sliding sleeve multistage fracturing completion tubular column, it includes tieback intubation, insertion pipe packer, many
Individual packer, multistage can coring pitching fracturing sliding bush, constant-pressure sliding sleeve, setting ball seat and ball-and-seat and guide shoe, it is described can coring
Pitching fracturing sliding bush includes top connection, outer sleeve, sandblasting joint, the lower contact being sequentially connected from top to bottom, in outer sleeve inner sleeve
Provided with outer core, outer core is fixedly installed on outer sleeve by cutting member, and the cutting member is cuts ring, the ring of cutting
Snip is fastened in the neck that outer core periphery is set, and pressure break passage is provided with outer core, the lower end of each pressure break passage is all provided with
Have in long thin seam, the lower end of outer core and be arranged its components, its components are connected by locking device with outer core, its components
Lower part connected by unlocking the bottom split-phase of pin and locking device, its components include ball seat, are set in ball seat upper end
It is equipped with connecting portion；
Step 2: pressing crack construction, is specially：Open at different levels successively from tubing string toe-end by pressure break design requirement order input ball sealer
Can coring pitching fracturing sliding bush, each section of pressing crack construction of implementation；
Step 3: after the completion of pressing crack construction, well is sealed in using coiled tubing band corer, taking-up can be in coring pitching fracturing sliding bush
Its components；
Step 4: after its components take out, as needed, well is sealed in water-yielding stratum using coiled tubing selective switch sliding sleeve pipe
Section it is corresponding can coring pitching fracturing sliding bush carry out repeat be turned on and off operation.
2. a kind of horizontal well according to claim 1 can coring sliding sleeve multistage fracturing completion tubular column construction method, it is special
Levy and be, coring joint is provided with the bottom of the coiled tubing corer string, coring joint can coring throwing for fishing for
Its components of ball fracturing sliding bush, the connecting portion that the ball seat for fishing for pawl and its components is provided with the lower end of coring joint matches
Connect, above put forward coiled tubing band corer ribbon and move ball seat and move up, so as to take out inner core that can be in coring pitching fracturing sliding bush
Component.
3. a kind of horizontal well according to claim 2 can coring sliding sleeve multistage fracturing completion tubular column construction method, it is special
Levy and be, connector is fixedly connected with the ball seat lower end of its components, the lower end of the connector and the connecting portion of ball seat upper end
Mutually arrange, connector be used for remove one-level can coring pitching fracturing sliding bush its components, realize time coiled tubing band of tripping in
Corer string takes out its components that can be in coring pitching fracturing sliding bush at different levels.
4. a kind of horizontal well according to claim 1 or 2 can coring sliding sleeve multistage fracturing completion tubular column construction method, its
It is characterised by, the step 4 is specially：The coiled tubing selective switch of offer, which slides bunch tube, includes derailing switch, derailing switch bag
The top connection being sequentially connected from top to down, central tube, lower contact are included, opened by pressure mechanism, lock is set with successively on central tube
Block, diameter changing mechanism, the opened by pressure mechanism can be fixedly installed on central tube along central tube axial slip, the closing piece,
The opened by pressure mechanism is connected by pin with closing piece, and the lower end of the opened by pressure mechanism is sleeved on the upper of diameter changing mechanism
End, so that diameter changing mechanism be locked, annular slot is provided with the upper end of outer core and slides bunch tube with coiled tubing selective switch
The derailing switch of upper setting is mutually arranged；Being slided when coiled tubing selective switch extremely can coring pitching pressure break cunning under the derailing switch of bunch tube
During the design attitude of set, turn on pump sand washing, while slowly decentralization coiled tubing selective switch slides bunch tube, until derailing switch was descended
Flushing discharge capacity can be improved after the neck of coring pitching fracturing sliding bush, when hydraulic coupling reaches the pressure pushing pressure opener of setting
During sliding above central tube, diameter changing mechanism unblock, the increasing radius of diameter changing mechanism simultaneously extends radially out and is installed on sliding sleeve
Neck on, now, slowly above carry coiled tubing selective switch slide bunch tube, and observe tubing string suspending weight change, judge switch
Whether the diameter changing mechanism of device is installed on can be on the outer core upper end neck of coring pitching fracturing sliding bush, and suspending weight increase explanation has dragged for outer
Carried in core, continuation coiled tubing selective switch slide bunch tube, when can coring pitching fracturing sliding bush close after suspending weight will moment
Reduce, coiled tubing selective switch is carried in continuations and slides in bunch tube that suspending weight is without significant change, up to continuous oil pipe is selectively opened
Close sliding bunch tube and take out well head.
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| CN201510092721.4A CN104727796B (en) | 2015-03-02 | 2015-03-02 | A kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction method |
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| CN201510092721.4A CN104727796B (en) | 2015-03-02 | 2015-03-02 | A kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106703706B (en) * | 2015-07-24 | 2018-11-16 | 中国石油天然气股份有限公司 | Injection-production column jacket and the method for using it |
| CN105134092B (en) * | 2015-08-05 | 2017-07-28 | 中国海洋石油总公司 | The HTHP horizontal well completion tubular column of middle part shut-in well injection low-gravity liquid |
| CN111237848B (en) * | 2020-01-16 | 2021-06-29 | 安徽理工大学 | Direct heating device utilizing abandoned mine and construction method thereof |
| CN113279694B (en) * | 2021-06-15 | 2022-05-20 | 成都高峰石油机械有限公司 | Ultrashort two-way full-hydraulic drilling jar |
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| CN201714364U (en) * | 2010-07-02 | 2011-01-19 | 中国石油集团川庆钻探工程有限公司 | Tubular column for horizontal well barefoot well completion staged fracturing acidizing tool |
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| CN202280447U (en) * | 2011-09-30 | 2012-06-20 | 中国石油化工股份有限公司 | Control valve used for fracturing well completion and capable of being opened and closed |
| CN202832376U (en) * | 2012-08-07 | 2013-03-27 | 新疆华油油气工程有限公司 | Full-bore closable stratified sliding sleeve |
| CN103277078A (en) * | 2013-06-04 | 2013-09-04 | 中国海洋石油总公司 | Hydraulic sliding sleeve |
| CN103362488A (en) * | 2012-03-31 | 2013-10-23 | 大港油田集团有限责任公司 | Sand blasting device allowing fracturing sliding sleeve to be fished |
| CN203321474U (en) * | 2013-05-14 | 2013-12-04 | 中国石油天然气股份有限公司 | Gas field horizontal well immovable string hydraulic power sand blast clustering multistage fracturing string |
| CN203716933U (en) * | 2014-02-19 | 2014-07-16 | 中国海洋石油总公司 | Hydraulic sliding sleeve opening and closing tool |
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2015
- 2015-03-02 CN CN201510092721.4A patent/CN104727796B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201714364U (en) * | 2010-07-02 | 2011-01-19 | 中国石油集团川庆钻探工程有限公司 | Tubular column for horizontal well barefoot well completion staged fracturing acidizing tool |
| CN102022104A (en) * | 2010-11-06 | 2011-04-20 | 大庆油田有限责任公司 | Open-hole packer for open-hole horizontal well and preset connector fracturing well completion method |
| CN202280447U (en) * | 2011-09-30 | 2012-06-20 | 中国石油化工股份有限公司 | Control valve used for fracturing well completion and capable of being opened and closed |
| CN103362488A (en) * | 2012-03-31 | 2013-10-23 | 大港油田集团有限责任公司 | Sand blasting device allowing fracturing sliding sleeve to be fished |
| CN202832376U (en) * | 2012-08-07 | 2013-03-27 | 新疆华油油气工程有限公司 | Full-bore closable stratified sliding sleeve |
| CN203321474U (en) * | 2013-05-14 | 2013-12-04 | 中国石油天然气股份有限公司 | Gas field horizontal well immovable string hydraulic power sand blast clustering multistage fracturing string |
| CN103277078A (en) * | 2013-06-04 | 2013-09-04 | 中国海洋石油总公司 | Hydraulic sliding sleeve |
| CN203716933U (en) * | 2014-02-19 | 2014-07-16 | 中国海洋石油总公司 | Hydraulic sliding sleeve opening and closing tool |
Also Published As
| Publication number | Publication date |
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| CN104727796A (en) | 2015-06-24 |
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