CN104213846B - Casing completion multi-section fracturing horizontal well selective production pipe column and working method thereof - Google Patents
Casing completion multi-section fracturing horizontal well selective production pipe column and working method thereof Download PDFInfo
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- CN104213846B CN104213846B CN201310219765.XA CN201310219765A CN104213846B CN 104213846 B CN104213846 B CN 104213846B CN 201310219765 A CN201310219765 A CN 201310219765A CN 104213846 B CN104213846 B CN 104213846B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000005065 mining Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000003780 insertion Methods 0.000 abstract 4
- 230000037431 insertion Effects 0.000 abstract 4
- 238000005192 partition Methods 0.000 abstract 2
- 230000018109 developmental process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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Abstract
The invention discloses a casing completion multi-section fracturing horizontal well selective exploitation tubular column and a working method thereof, which are designed for realizing the selective and section-by-section exploitation of a horizontal well. The multi-stage packer of the separation sleeve is connected outside the water-proof oil pipe of the pipe column; the water-proof oil pipe is internally connected with a deep well pump, a connecting sealing insertion pipe, a constant pressure valve and a sealing cylinder which are opposite to each partition section of the sleeve and a bottom guide plug; the upper end of the bottom-sealing perforated pipe is connected with a sealing insertion pipe, and the pipe body is connected with a constant pressure valve and a sealing cylinder in each partition section. When the horizontal well is in operation, the packer is used for separating the horizontal well section, then the sealing insertion pipe and the bottom-sealing perforated pipe are put in, the sealing barrel is combined in the separation pipe column to form a secondary sealing section, the sealing insertion pipe is dragged, and selective exploitation of the horizontal section and sectional production water exploration are carried out. The invention can be used in multiple stages, the number of stages is not limited, selective exploitation under the conditions of casing pipe micro-deformation and damage can be realized, or the exploitation from top to bottom section by section and the production and water exploration by section can be realized, the flooding of the whole well can be avoided, and the good development effect can be ensured.
Description
Technical field
The present invention relates to a kind of cased hole completion multistage frac water horizontal well selectivity mining tubular column and method of work thereof, belong to oil extraction in oil field technical field.
Background technology
Utilize horizontal wells low permeability oil field can suggestions for improvement largely, improve recovery ratio.Along with the progress of horizontal well drilling technology and transformation means, the horizontal segment of horizontal well is more and more longer, and transformation hop count gets more and more.By the impact of waterflooding extraction and fracture development, the problem that each interval of horizontal well also exists unbalance stress and contribution differs.The water logging of part of horizontal section can bring disaster to full well, quickly increase in well moisture, shorten water-free oil production period, accelerate decline production, if indefinite water breakthrough direction and layer position, it is unclear that each stressor layer and production capacity situation, without dynamic field regulating measures targetedly, down-hole casing can be made to be damaged and deform, have a strong impact on the development effectiveness of horizontal well.
At present, the selectivity exploitation of hyposmosis low discharge horizontal well and segmentation production test water detection substantially adopt derailing switch timing controlled and produce each interval one by one, moisture each section of ground assay, it is judged that water exit interval.But, downhole on-off actuator switch is normally no can only be known after test terminates, if malfunctioning switch, it will cause test crash.It addition, micro-change of horizontal well casing pipe and fouling can make cannot enter down from sealed packer, meet oil and expand and cannot drag and trip out.
Summary of the invention
It is an object of the invention to provide a kind of cased hole completion multistage frac water horizontal well selectivity mining tubular column and method of work thereof, it can solve above-mentioned technical problem, it is achieved product and water detection are asked in horizontal well optionally exploitation piecemeal, segmentation.
The technology contents of this cased hole completion multistage frac water horizontal well selectivity mining tubular column is as follows:
The multiple-string packer separating sleeve pipe it is sequentially connected with from top to bottom outside this tubing string water proof oil pipe；The sealing be sequentially connected with deep well pump in water proof oil pipe from top to bottom, connecting back-off packer intubates, the constant pressure valve of each compartment of facing sleeve and sealing drum, and water proof oil pipe bottom connects guiding plug；Back cover pipe upper end with holes connects sealing and intubates, and pipe shaft connects the constant pressure valve in each compartment and sealing drum.
The method of work of this cased hole completion multistage frac water horizontal well selectivity mining tubular column is as follows:
Net horizontal section is separated first with the multiple-string packer separating tubing string；Enter down sealing again and intubate pipe with holes with back cover, form secondary seal section separating in tubing string in conjunction with sealing drum；Dragging sealing intubates, and carries out the exploitation of horizontal segment selectivity and product water detection is asked in segmentation.
The present invention can multistage use, and progression is unrestricted, selectivity exploitation when can realize the micro-change of sleeve pipe and damage, or product water detection is asked in exploitation piecemeal and segmentation from top to bottom, is avoided that full well water floods, it is ensured that good development effectiveness.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that cased hole completion multistage frac water horizontal well selectivity mining tubular column carries out recovering the oil in the middle part of horizontal well.
Detailed description of the invention
Embodiment:
With reference to Fig. 1, embodiments of the invention are further illustrated:
This tubing string water proof oil pipe 10 outside is sequentially connected with the separation Y445 back-off packer 12 of sleeve pipe 14 from top to bottom, Y441 intubates upper packer 7 and Y441 intubates lower packet 3；The sealing be sequentially connected with deep well pump 13 in water proof oil pipe 10 from top to bottom, connecting Y445 back-off packer 12 intubates 11, the upper constant pressure valve 9 of compartment on facing sleeve 14 and the middle constant pressure valve 5 of compartment in upper seal bore 8, facing sleeve 14 and lower seal cylinder 4, the lower constant pressure valve 2 of 14 times compartments of facing sleeve and guiding plug 1；Back cover pipe 6 with holes upper end connects sealing and intubates 11, and pipe shaft connects the constant pressure valve in each compartment and sealing drum.
The method of work of this tubing string is as follows:
1) enter to separate tubing string under: first, by hop count and certain distance requirement, it is directed to plug 1, each packer, each constant pressure valve and each sealing drum be connected with water proof oil pipe 10 installation, then G.I.H relevant position, enters the Y445 back-off packer 12 after well, Y441 intubates upper packer 7 and Y441 intubates lower packet 3 and sleeve pipe 14 is separated into four sections.
2) set: suppress 20MPa with cementing truck from well head, build the pressure in pipe, make Y441 intubate upper packer 7 and Y441 intubates lower packet 3 and first sets；Then proceed to pressurization, constant pressure valve 9, middle constant pressure valve 5 and lower constant pressure valve 2 in unlatching, link up oil reservoir.
3) pitching after well head release, after the back-off sub ball seat that Y445 back-off packer 12 fallen by steel ball, once suppressing with pump truck that to fall suddenly to pressure be zero, inner sleeve of now giving up departs from back-off sub, tripping out the water proof oil pipe 10 of more than back-off sub, all the other tubing strings are arranged on down-hole.
4) enter flow string under: sealing is intubated 11 and back cover pipe with holes enter for 6 times in water proof oil pipe 10, connect each sealing drum in down-hole string, form new each secondary seal section.
5) turn on pump recovers the oil: production horizon section as required, drags sealing and intubates 11 and back cover pipe 6 with holes, links up the oil reservoir in any section, exploit.
6) trip out separation tubing string: first trip out sealing and intubate 11 and back cover pipe 6 with holes, then under enter fishing socket, salvage Y445 back-off packer 12 step by step, Y441 intubates upper packer 9 and Y441 intubates lower packet 4.
Claims (1)
1. the method for work of a cased hole completion multistage frac water horizontal well selectivity mining tubular column, it is characterised in that separate net horizontal section first with the multiple-string packer separating tubing string；Enter down sealing again and intubate pipe with holes with back cover, form secondary seal section separating in tubing string in conjunction with sealing drum；Dragging sealing intubates, and carries out the exploitation of horizontal segment selectivity and product water detection is asked in segmentation；
The specific works step of described method of work is as follows:
1) enter to separate tubing string under: first, by hop count and certain distance requirement, it is directed to plug (1), each packer, each constant pressure valve and each sealing drum be connected with water proof oil pipe (10) installation, then G.I.H relevant position, enters the Y445 back-off packer (12) after well, Y441 intubates upper packer (7) and Y441 intubates lower packet (3) and sleeve pipe (14) is separated into four sections；
2) set: suppress 20MPa with cementing truck from well head, build the pressure in pipe, make Y441 intubate upper packer (7) and Y441 intubates lower packet (3) and first sets；Then proceed to pressurization, constant pressure valve (9), middle constant pressure valve (5) and lower constant pressure valve (2) in unlatching, link up oil reservoir；
3) pitching after well head release, after the back-off sub ball seat that Y445 back-off packer (12) fallen by steel ball, once suppress with pump truck that to fall suddenly to pressure be zero, inner sleeve of now giving up departs from back-off sub, tripping out the water proof oil pipe (10) of more than back-off sub, all the other tubing strings are arranged on down-hole；
4) enter flow string under: sealing intubated and enter in water proof oil pipe (10) under (11) and back cover pipe with holes (6), connect each sealing drum in down-hole string, form new each secondary seal section；
5) turn on pump recovers the oil: production horizon section as required, drags sealing and intubates (11) and back cover pipe with holes (6), links up the oil reservoir in any section, exploit；
6) separation tubing string is tripped out: first trip out sealing and intubate (11) and back cover pipe with holes (6), enter fishing socket down again, step by step salvage Y445 back-off packer (12), Y441 intubates upper packer (7) and Y441 intubates lower packet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219765.XA CN104213846B (en) | 2013-06-05 | 2013-06-05 | Casing completion multi-section fracturing horizontal well selective production pipe column and working method thereof |
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| CN201310219765.XA CN104213846B (en) | 2013-06-05 | 2013-06-05 | Casing completion multi-section fracturing horizontal well selective production pipe column and working method thereof |
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| Publication Number | Publication Date |
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| CN104213846A CN104213846A (en) | 2014-12-17 |
| CN104213846B true CN104213846B (en) | 2016-07-13 |
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Families Citing this family (10)
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|---|---|---|---|---|
| CN106437641B (en) * | 2015-08-11 | 2018-12-04 | 中国石油化工股份有限公司 | The long-acting two-tube water injection string of independent safety |
| CN105134184B (en) * | 2015-09-11 | 2018-04-03 | 中国石油天然气股份有限公司 | Horizontal well continuous channeling checking process pipe column and method |
| CN105937393B (en) * | 2016-06-27 | 2022-11-04 | 中国石油天然气股份有限公司 | Horizontal well dragging type liquid production profile testing pipe column and testing method thereof |
| RU2653216C1 (en) * | 2017-04-26 | 2018-05-07 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина | Method and device for research and operation of horizontal well with zones of permeability variations |
| CN107956457B (en) * | 2018-01-08 | 2023-09-26 | 北京合力奇点科技有限公司 | Oil extraction water control device, directional well oil extraction pipe string for well completion and well completion method thereof |
| CN109653715A (en) * | 2018-12-29 | 2019-04-19 | 中国石油天然气股份有限公司 | Horizontal well section staggered displacement and imbibition oil displacement injection-production tubular column and method |
| RU2726662C1 (en) * | 2019-12-09 | 2020-07-15 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина | Device for serial operation of formation of horizontal well |
| CN111577257B (en) * | 2020-06-19 | 2023-03-28 | 陕西捷奥能源科技有限公司 | Horizontal well subsection setting type flow metering water exploration pipe column and water exploration method thereof |
| CN111852428A (en) * | 2020-08-03 | 2020-10-30 | 中国石油天然气股份有限公司 | Method for fracturing outer packing and coiled tubing in combined operation |
| CN117514115B (en) * | 2023-12-18 | 2024-05-10 | 河南省地质研究院 | Completion device and method for fracturing horizontal well based on high-rank coal bed gas |
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| CN101864921A (en) * | 2010-06-11 | 2010-10-20 | 大港油田集团有限责任公司 | Well completion and oil production string of horizontal well and well completion and oil production processes thereof |
| CN201705276U (en) * | 2010-06-11 | 2011-01-12 | 大港油田集团有限责任公司 | Well completion and flow string of horizontal well |
| CN102505921A (en) * | 2011-11-04 | 2012-06-20 | 中国石油天然气股份有限公司 | Open hole horizontal well water exploration pipe column |
| CN203321480U (en) * | 2013-06-05 | 2013-12-04 | 中国石油天然气股份有限公司 | Casing completion multi-section fracturing horizontal well selective exploitation pipe string |
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2013
- 2013-06-05 CN CN201310219765.XA patent/CN104213846B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2309246C1 (en) * | 2006-02-02 | 2007-10-27 | Олег Марсович Гарипов | Downhole machine |
| CN201474673U (en) * | 2009-08-19 | 2010-05-19 | 中国石油天然气股份有限公司 | Oil production pipe column for sectional water control of horizontal well |
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| CN104213846A (en) | 2014-12-17 |
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