CN104727796A - Construction method of horizontal well core-withdrawable sliding sleeve multistage fracturing completion pipe string - Google Patents
Construction method of horizontal well core-withdrawable sliding sleeve multistage fracturing completion pipe string Download PDFInfo
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- CN104727796A CN104727796A CN201510092721.4A CN201510092721A CN104727796A CN 104727796 A CN104727796 A CN 104727796A CN 201510092721 A CN201510092721 A CN 201510092721A CN 104727796 A CN104727796 A CN 104727796A
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- sliding sleeve
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 35
- 239000004576 sand Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
- 238000005488 sandblasting 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
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000009466 transformation Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 241000251468 Actinopterygii Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 241000372132 Hydrometridae Species 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 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
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005987 sulfurization reaction 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
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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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
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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
- 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 construction method of a horizontal well core-withdrawable sliding sleeve multistage fracturing completion pipe string. The construction method comprises the steps that a horizontal well core-withdrawable sliding sleeve multistage fracturing completion pipe string is constructed and comprises multiple stages of core-withdrawable ball-throwing fracturing sliding sleeves; then fracturing construction in each section is carried out; a coiled tubing with a core taking pipe string is adopted to enter a well, and inner core assemblies in the multi-stage core-withdrawable ball-throwing fracturing sliding sleeves are taken out; according to the need, a coiled tubing with a switch pipe string is adopted to enter the well to repeatedly open or close the corresponding core-withdrawable ball-throwing fracturing sliding sleeve in the water outlet layer section. By means of the method, pipe string post-pressing full through can be achieved, and the coiled tubing core taking pipe string is adopted to remove steps in a pipe string; compared with conventional drill-grinding, the construction efficiency is high, the risk is low and operation is convenient; a coiled tubing selective switch sliding sleeve pipe string is adopted to selectively open and close the core-withdrawable ball-throwing fracturing sliding sleeves, so that later-period repeated transformation, testing and water control measurement work are facilitated, and the important role of achieving the horizontal well yield increasing advantage to the maximum limit is brought into play.
Description
Technical field
The invention belongs to oil and gas industry horizontal well measure construction method, particularly the construction method of a kind of horizontal well desirable core sliding sleeve multistage fracturing completion tubular column.
Background technology
Along with development and the improving constantly technological requirement of oil and gas industry technology, the pressure break progression of one-trip string is constantly increased.Due to horizontal well completion tubular pile there is well after the feature that can not take out, the multistage sliding sleeve fuse existed in post-fracturing tubing string is by limit production passage, affect the test in later stage, repeat transformation, be mainly manifested in the following aspects: the multi-stage stairs existed in (1) completion tubular column, the later stage repeat transformation tubing string and production test instrument under enter difficulty; (2), after completion tubular column water outlet, later stage control water task difficulty is large, and the volume increase advantage of horizontal well cannot give full play to; (3) completion tubular column progression is more, and tubing string passage is little, causes the problems such as production throttling and limited production;
For the problems referred to above, conventional mode is by boring grinding except sliding sleeve fuse is to the restriction of hole diameter, but bores honed journey and there is greater risk, sometimes may cause high operating cost, and efficiency is low, and the later stage cannot the measure of real horizontal well control water.
Summary of the invention
Technical problem to be solved by this invention is that the deficiency existed for above-mentioned prior art provides a kind of one-trip string to take out all sliding sleeve inner cores, realize tubing string full-bore, for later stage production, test and repeat to transform the construction method providing and also can realize the horizontal well desirable core sliding sleeve multistage fracturing completion tubular column of the repeat switch of pitching fracturing sliding bush switch compared with major path.
The technical solution adopted in the present invention is: the construction method of a kind of horizontal well desirable core sliding sleeve multistage fracturing completion tubular column, is characterized in that: it comprises following construction sequence:
Step one, formation horizontal well desirable core sliding sleeve multistage fracturing completion tubular column, it comprises tieback intubate, insertion pipe packer, multiple packer, multistage desirable core pitching fracturing sliding bush, constant-pressure sliding sleeve, setting ball seat and ball-and-seat and guide shoe, described desirable core pitching fracturing sliding bush comprises the top connection connected successively from top to bottom, outer sleeve, sandblasting joint, lower contact, outer core is provided with in outer sleeve inner sleeve, described outer core is fixedly installed on outer sleeve by cutting member, core is provided with pressure break passage outside, sheathed its components in the lower end of outer core, its components is connected with outer core by locking device, described its components comprises ball seat, ball seat upper end is provided with connecting portion,
Step 2, pressing crack construction, be specially: drop into ball sealer by pressure break designing requirement order and open desirable core pitching fracturing sliding bush at different levels successively from tubing string toe-end, implement each section of pressing crack construction;
After step 3, pressing crack construction complete, adopt coiled tubing band corer to seal in well, take out its components in desirable core pitching fracturing sliding bush;
After step 4, its components take out, as required, adopt coiled tubing selective switch sliding sleeve pipe to seal in the well desirable core pitching fracturing sliding bush corresponding to water exit interval to repeat to open or shutoff operation.
By technique scheme, core joint is got described being provided with bottom of coiled tubing corer string, get core joint for fishing for its components of desirable core pitching fracturing sliding bush, the connecting portion being provided with the ball seat fishing for pawl and its components in the lower end of getting core joint is matched, on put forward coiled tubing band corer ribbon and move ball seat and move up, thus take out its components in desirable core pitching fracturing sliding bush.
By technique scheme, connector is fixedly connected with in the ball seat lower end of its components, the lower end of this connector arranges mutually with the connecting portion of ball seat upper end, connector, for taking off its components of one-level desirable core pitching fracturing sliding bush, enters its components in a coiled tubing band corer string taking-up desirable core pitching fracturing sliding bush at different levels under realization.
By technique scheme, described step 4 is specially: the sliding bunch tube of the coiled tubing selective switch provided comprises derailing switch, derailing switch comprises the top connection connected successively from top to down, central tube, lower contact, central tube is set with opened by pressure mechanism successively, lock dog, diameter changing mechanism, described opened by pressure mechanism can centrally pipe axial slip, described lock dog is fixedly installed on central tube, described opened by pressure mechanism is connected with lock dog by pin, the lower end of described opened by pressure mechanism is sleeved on the upper end of diameter changing mechanism, thus diameter changing mechanism is locked, the upper end of core is provided with the derailing switch that the sliding bunch tube of annular slot and coiled tubing selective switch is arranged and arranges mutually outside, when the derailing switch of the sliding bunch tube of coiled tubing selective switch is down to the design attitude of desirable core pitching fracturing sliding bush, turn on pump sand washing, slowly transfer the sliding bunch tube of coiled tubing selective switch simultaneously, until derailing switch improved after descending the draw-in groove of desirable core pitching fracturing sliding bush rinse discharge capacity, the pressure pushing pressure opening mechanism reaching setting when hydraulic coupling is in the process of slippage above central tube, diameter changing mechanism unlocks, the increasing radius of diameter changing mechanism also extends radially out and is installed on the draw-in groove of sliding sleeve, now, the sliding bunch tube of coiled tubing selective switch is carried slowly, and observe the change of tubing string suspending weight, judge whether the diameter changing mechanism of derailing switch is installed on the draw-in groove of desirable core pitching fracturing sliding bush outer core upper end, suspending weight increases explanation and has dragged for outer core, continuation is carried the sliding bunch tube of coiled tubing selective switch, after desirable core pitching fracturing sliding bush is closed, suspending weight will reduce instantaneously, continuation to be carried in the sliding bunch tube of coiled tubing selective switch suspending weight without significant change, until the sliding bunch tube of oil pipe selective switch will be continued take out well head.
Beneficial effect acquired by the present invention is: this construction method can realize the rear full-bore of horizontal well completion tubular pile pressure; Step in tubing string is higher than conventional brill mill efficiency of construction, risk is little to adopt coiled tubing corer string to remove, easy to operate, the sliding bunch tube of coiled tubing selective switch is adopted to implement selective switch operation to desirable core pitching fracturing sliding bush, being conducive to the later stage repeats transformation, test and control water measure operation, plays a significant role to playing horizontal well volume increase advantage to greatest extent.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of horizontal well desirable core sliding sleeve multistage fracturing completion tubular column.
Fig. 2 is the structure chart of desirable core pitching fracturing sliding bush.
Fig. 3 connects coiled tubing corer string structure schematic diagram.
Fig. 4 is the sliding bunch tube schematic diagram of coiled tubing selective switch.
Fig. 5 is the structural representation of Fig. 4 breaker in middle device.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, the construction method of a kind of horizontal well desirable core sliding sleeve multistage fracturing completion tubular column that provides of the present embodiment it comprise the steps:
Step one, configurations horizontal well desirable core sliding sleeve multistage fracturing completion tubular column, it comprises tieback intubate 42, insertion pipe packer 43, multiple packer 44,46,48,50,52, multistage desirable core sliding sleeve 45,47,49,51, constant-pressure sliding sleeve 53, setting ball seat 54 and ball-and-seat and guide shoe 55.Wherein, as shown in Figure 2, desirable core pitching fracturing sliding bush comprises the top connection 1 connected successively from top to bottom, outer sleeve 3, sandblasting joint 6, lower contact 14, outer core 4 is arranged with in outer sleeve 3, the lower end of outer core 4 extends in lower contact 14, dust ring 7 is provided with at the two ends of the pressure break passage of described sandblasting joint 6, the upper end of described outer core 4 is fixedly installed on outer sleeve 3 by cutting member 2, outside core 4 is provided with pressure break passage, combined seal ring 5 is provided with between the lower end of outer core 4 and outer sleeve 3, the lower end of outer core 4 is connected with outer support cylinder 17, the lower end of lower contact 14 is provided with the limited step for stoping outer support cylinder 17 to move downward.Sheathed its components in the lower end of outer core 4, its components is connected with outer core 4 by locking device, described its components comprises the ball seat 9, inner support cylinder 11, the connector 13 that are connected successively, is provided with the connecting portion connected with coiled tubing corer string in ball seat 9 upper end.Described connecting portion is the sawtooth internal thread 16 being arranged on ball seat 9 upper end.Connector 13 is for taking off its components of one-level desirable core pitching fracturing sliding bush, and the lower end of connector 13 arranges mutually with the connecting portion of ball seat upper end.Be provided with in the lower end of connector 13 and fish for pawl, be provided with sawtooth external screw thread fishing on pawl, conveniently fish for pawl the radial slot inside contracting deformation occurs fishing for pawl is circumferentially provided with, be convenient to better connect with the sawtooth internal thread 16 of ball seat upper end.
Described locking device comprises snap lock and refers to 10, refer to that the upper outer end of 10 is provided with positive stop lug boss in described snap lock, the lower end inner wall of core is outside provided with the groove clamping snap lock and refer to positive stop lug boss, positive stop lug boss snap lock referred to by the lower end of ball seat is fastened in groove, on inner support cylinder 11, corresponding snap lock refers to be provided with the spatial accommodation 18 allowing snap lock to refer to inside contract in radial direction generation deformation, and the lower end that described snap lock refers to is fixedly installed on its components by unlocking pin 12.
Step 2, pressing crack construction, be specially: after tubing string is lowered into position by working design, pitching sets insertion pipe packer 43 and packer 44,46,48,50,52 etc., then connect tieback oil pipe 42, and pitching is opened desirable core pitching fracturing sliding bush 45,47,49,51 etc. step by step and is carried out each section of sand fracturing construction successively.When pressure break, after stifled ball 8 arrives ball seat 9, when building the pressure to setting pressure from oil pipe, cut ring 2 to be sheared, outer core 4, ball seat 9, snap lock refer to 10, inner support cylinder 11, unlock pin 12, connector 13 moves down, when the sand jet outlet on outer core 4 aligns with the sand jet outlet of sandblasting joint 6 (when also outer support cylinder 17 moves to limited step place), sliding sleeve is fully opened, and fracturing fluid can enter stratum in tubing string.
After step 3, pressing crack construction complete, under enter coiled tubing corer string, as shown in Figure 3, coiled tubing corer string comprises coiled tubing 19, coiled tubing joint 20, safety joint 21, bumper jar 22, centralizer 23, counterbalance valve 24, gets core joint 25, the lower end of wherein getting core joint 25 is provided with fishes for pawl, is circumferentially provided with slot fishing on pawl, is convenient to the sawtooth internal thread of ball seat upper end matched, in slot, sulfuration fills elastic caoutchouc, its supporting role.
When coiled tubing corer string arrives desirable core pitching fracturing sliding bush design attitude, in coiled tubing corer string, the power of 10 ~ 20kN is applied by bumper jar 22, the portion of fishing for of coiled tubing corer string is meshed with the sawtooth inner nut of the ball seat of its components, and upper lifting pipe ribbon is moved ball seat 9 and moved up.Produced by bumper jar 22 and hit power, when on the power of hitting reach 40 ~ 50kN time, after unblock pin 12 is sheared, continuation is carried coiled tubing corer string certain distance, snap lock refers to that 10 lock and refer to adduction after the support losing ball seat 9, snap lock refer to 10 contactless with outer core 4 after, carry coiled tubing corer string on can continuing, take out ball seat 9, stifled ball 8, snap lock refer to 10, support tube 11, unlock the parts such as pin 12, connector 13, in sliding sleeve, latus rectum is extended to full-bore (consistent with outer core 4 latus rectum), also can be according to circumstances, continue to transfer coiled tubing corer string and promote stifled ball 8, ball seat 9, snap lock refers to 10, support tube 11, unlock pin 12, ball seat 9 place of connector 13 to next stage sliding sleeve, turn on pump sand washing also slowly transfers tubing string, apply the power of 10 ~ 20kN to coiled tubing corer string after, the engagement of ball seat 9 upper end of connector 13 and next stage sliding sleeve, then upper lifting pipe post, by bumper jar 22 produce on the power of hitting the inner core of sliding sleeve is unlocked, repeat above-mentioned steps, until all sliding sleeve inner cores realize unlocking and docking, finally by carry coiled tubing corer string all sliding sleeve inner cores taken out of, complete the inner core that one-trip string takes out all desirable core pitching fracturing sliding bushs, in tubing string, latus rectum is recovered.
Step 4, complete after coiled tubing gets core construction, according to the later stage condition of production and needs, under enter coiled tubing selective switch sliding bunch tube repeat switch operation carried out to desirable core pitching fracturing sliding bush.
Wherein, the upper end of core 4 is provided with the derailing switch that the sliding bunch tube of annular slot 15 and coiled tubing selective switch is arranged and arranges mutually outside.As shown in Figure 4,5, the sliding bunch tube of described coiled tubing selective switch comprises coiled tubing 19, coiled tubing joint 20, safety joint 21, bumper jar 22, communicating valve 26, centralizer 23, derailing switch 27, ball seat for subsequent use 28, counterbalance valve 24, rotates the compositions such as sand flushing tool 29.As shown in Figure 4, described derailing switch 27 comprise connect successively from top to down top connection 30, central tube 33, lower contact 41, central tube 33 is set with opened by pressure mechanism, lock dog 36, diameter changing mechanism successively, described opened by pressure mechanism can centrally pipe 33 axial slip, described lock dog 36 is fixedly installed on central tube 33, described opened by pressure mechanism is connected with lock dog 36 by pin 37, and the lower end of described opened by pressure mechanism is sleeved on the upper end of diameter changing mechanism, thus is locked by diameter changing mechanism.
Wherein, described opened by pressure mechanism comprises the upper overcoat 31 be sleeved on outside central tube 33, the supporting positive cover 35 be connected with upper overcoat, the inlet opening 34 offered on central tube 33, wherein, upper overcoat 31 can along the outer wall axial slip of top connection 30, annular space between upper overcoat 31 and central tube 33 is arranged with return spring 32, the lower end of return spring and the upper-end contact of supporting positive cover 35, for the return of opened by pressure mechanism.Described inlet opening 34 is connected with the inwall of supporting positive cover 35, is provided with sealing ring in the both sides of inlet opening 34, and the lower end of described supporting positive cover 35 is fixedly installed on lock dog 36 by pin 37.
Described diameter changing mechanism comprises some key blocks 38 that centrally pipe circumference is arranged, the two ends of key block 38 are taper, bow spring 39 is provided with in described key block 38, one end tapered portion of key block 38 is sleeved on by supporting positive cover, thus key block 38 is pressed fixing, 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 can smooth starting pressure opening mechanism, the below that central tube is positioned at inlet opening be provided with the conical surface that internal diameter diminishes, and aspect pitching builds the pressure opening pressure opening mechanism.
When the derailing switch 27 of the sliding bunch tube of coiled tubing selective switch is down to desirable core pitching fracturing sliding bush design attitude, turn on pump sand washing, slowly transfer tubing string simultaneously, until derailing switch 27 improved after descending the draw-in groove 15 of desirable core pitching fracturing sliding bush rinse discharge capacity, after hydraulic coupling passes through inlet opening 34, the upper outside cover 31 of promotion and supporting positive cover 35 are to the slippage of top connection direction, supporting positive cover 35 is in the process of slippage, key block 38 loses binding force, under the elastic force effect of bow spring 39, key block 38 extends radially out and makes key block 38 be installed on the draw-in groove 15 of sliding sleeve, (when hydraulic coupling be not enough to promote opened by pressure mechanism move time, can pitching pitching build the pressure key block 38 is stretched out), and slow upper lifting pipe post, and observe the change of tubing string suspending weight, judge whether the key block of derailing switch drags for desirable core pitching fracturing sliding bush outer core 4 upper end draw-in groove, suspending weight increases explanation and has dragged for outer core 4, continue upper lifting pipe post, sliding sleeve is closed rear suspending weight and will be reduced instantaneously, continuation is carried coiled tubing switching tube string suspending weight without significant change, until coiled tubing is taken out well head (or to have no load variations, upper lifting pipe post is smooth), as do not dragged for, then again will transfer coiled tubing, descending derailing switch to get core pitching fracturing sliding bush physical location, and slow upper lifting pipe post, be confirmed whether to drag for according to load variations.
Claims (4)
1. a construction method for horizontal well desirable core sliding sleeve multistage fracturing completion tubular column, is characterized in that: it comprises following construction sequence:
Step one, formation horizontal well desirable core sliding sleeve multistage fracturing completion tubular column, it comprises tieback intubate, insertion pipe packer, multiple packer, multistage desirable core pitching fracturing sliding bush, constant-pressure sliding sleeve, setting ball seat and ball-and-seat and guide shoe, described desirable core pitching fracturing sliding bush comprises the top connection connected successively from top to bottom, outer sleeve, sandblasting joint, lower contact, outer core is provided with in outer sleeve inner sleeve, described outer core is fixedly installed on outer sleeve by cutting member, core is provided with pressure break passage outside, sheathed its components in the lower end of outer core, its components is connected with outer core by locking device, described its components comprises ball seat, ball seat upper end is provided with connecting portion,
Step 2, pressing crack construction, be specially: drop into ball sealer by pressure break designing requirement order and open desirable core pitching fracturing sliding bush at different levels successively from tubing string toe-end, implement each section of pressing crack construction;
After step 3, pressing crack construction complete, adopt coiled tubing band corer to seal in well, take out its components in desirable core pitching fracturing sliding bush;
After step 4, its components take out, as required, adopt coiled tubing selective switch sliding sleeve pipe to seal in the well desirable core pitching fracturing sliding bush corresponding to water exit interval to repeat to open or shutoff operation.
2. the construction method of a kind of horizontal well according to claim 1 desirable core sliding sleeve multistage fracturing completion tubular column, it is characterized in that, core joint is got described being provided with bottom of coiled tubing corer string, get core joint for fishing for its components of desirable core pitching fracturing sliding bush, the connecting portion being provided with the ball seat fishing for pawl and its components in the lower end of getting core joint is matched, on put forward coiled tubing band corer ribbon and move ball seat and move up, thus take out its components in desirable core pitching fracturing sliding bush.
3. the construction method of a kind of horizontal well according to claim 2 desirable core sliding sleeve multistage fracturing completion tubular column, it is characterized in that, connector is fixedly connected with in the ball seat lower end of its components, the lower end of this connector arranges mutually with the connecting portion of ball seat upper end, connector, for taking off its components of one-level desirable core pitching fracturing sliding bush, enters its components in a coiled tubing band corer string taking-up desirable core pitching fracturing sliding bush at different levels under realization.
4. the construction method of a kind of horizontal well according to claim 1 and 2 desirable core sliding sleeve multistage fracturing completion tubular column, it is characterized in that, described step 4 is specially: the sliding bunch tube of the coiled tubing selective switch provided comprises derailing switch, derailing switch comprises the top connection connected successively from top to down, central tube, lower contact, central tube is set with opened by pressure mechanism successively, lock dog, diameter changing mechanism, described opened by pressure mechanism can centrally pipe axial slip, described lock dog is fixedly installed on central tube, described opened by pressure mechanism is connected with lock dog by pin, the lower end of described opened by pressure mechanism is sleeved on the upper end of diameter changing mechanism, thus diameter changing mechanism is locked, the upper end of core is provided with the derailing switch that the sliding bunch tube of annular slot and coiled tubing selective switch is arranged and arranges mutually outside, when the derailing switch of the sliding bunch tube of coiled tubing selective switch is down to the design attitude of desirable core pitching fracturing sliding bush, turn on pump sand washing, slowly transfer the sliding bunch tube of coiled tubing selective switch simultaneously, until derailing switch improved after descending the draw-in groove of desirable core pitching fracturing sliding bush rinse discharge capacity, the pressure pushing pressure opening mechanism reaching setting when hydraulic coupling is in the process of slippage above central tube, diameter changing mechanism unlocks, the increasing radius of diameter changing mechanism also extends radially out and is installed on the draw-in groove of sliding sleeve, now, the sliding bunch tube of coiled tubing selective switch is carried slowly, and observe the change of tubing string suspending weight, judge whether the diameter changing mechanism of derailing switch is installed on the draw-in groove of desirable core pitching fracturing sliding bush outer core upper end, suspending weight increases explanation and has dragged for outer core, continuation is carried the sliding bunch tube of coiled tubing selective switch, after desirable core pitching fracturing sliding bush is closed, suspending weight will reduce instantaneously, continuation to be carried in the sliding bunch tube of coiled tubing selective switch suspending weight without significant change, until the sliding bunch tube of oil pipe selective switch will be continued take out well head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
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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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| CN104727796A true CN104727796A (en) | 2015-06-24 |
| CN104727796B CN104727796B (en) | 2017-08-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105134092A (en) * | 2015-08-05 | 2015-12-09 | 中国海洋石油总公司 | High temperature high pressure horizontal well completion pipe string with middle shut-in well injected with hypobarism liquid |
| CN106703706A (en) * | 2015-07-24 | 2017-05-24 | 中国石油天然气股份有限公司 | Injection and production tubing string and method thereof |
| CN111237848A (en) * | 2020-01-16 | 2020-06-05 | 安徽理工大学 | Direct heating device utilizing abandoned mine and construction method thereof |
| CN113279694A (en) * | 2021-06-15 | 2021-08-20 | 成都高峰石油机械有限公司 | Ultrashort bidirectional full-hydraulic drilling jar |
| CN114059964A (en) * | 2020-07-31 | 2022-02-18 | 中国石油化工股份有限公司 | Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly |
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| CN106703706A (en) * | 2015-07-24 | 2017-05-24 | 中国石油天然气股份有限公司 | Injection and production tubing string and method thereof |
| 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 |
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| CN111237848A (en) * | 2020-01-16 | 2020-06-05 | 安徽理工大学 | Direct heating device utilizing abandoned mine and construction method thereof |
| CN114059964A (en) * | 2020-07-31 | 2022-02-18 | 中国石油化工股份有限公司 | Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly |
| CN114059964B (en) * | 2020-07-31 | 2024-05-28 | 中国石油化工股份有限公司 | Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly |
| CN113279694A (en) * | 2021-06-15 | 2021-08-20 | 成都高峰石油机械有限公司 | Ultrashort bidirectional full-hydraulic drilling jar |
| 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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| CN104727796B (en) | 2017-08-29 |
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Address after: 430035 Hubei city in Wuhan province two Qiaokou Gutian Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Patentee after: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC Address before: 430035 Hubei city in Wuhan province two Qiaokou Gutian Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Patentee before: OIL PRODUCTION TECHNOLOGY Research Institute OF JIANGHAN OILFIELD COMPANY SINOPEC |
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Effective date of registration: 20191217 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Address before: 430035 Hubei city in Wuhan province two Qiaokou Gutian Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Patentee before: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC |