CN104653157B - Multi-stage separate-layer water injection string and working method thereof - Google Patents
Multi-stage separate-layer water injection string and working method thereof Download PDFInfo
- Publication number
- CN104653157B CN104653157B CN201310585664.4A CN201310585664A CN104653157B CN 104653157 B CN104653157 B CN 104653157B CN 201310585664 A CN201310585664 A CN 201310585664A CN 104653157 B CN104653157 B CN 104653157B
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- China
- Prior art keywords
- well
- water
- different levels
- oil pipe
- packer
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000002347 injection Methods 0.000 title claims abstract description 40
- 239000007924 injection Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 claims description 5
- 210000002445 nipple Anatomy 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract 1
- 238000011161 development Methods 0.000 description 2
- 230000032798 delamination Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
Landscapes
- 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a multi-stage separate-layer water injection pipe column and a working method thereof, which are designed for improving the testing and allocating success rate and efficiency of a water distributor. The pipe column is sequentially connected with all levels of bridge type concentric water distributors separated by all levels of step-by-step unsealing packers, a preset working barrel, a double-acting valve, a sieve pipe and a plug through oil pipes. The tubular column is connected with the technical steps of well entering, packer setting, water injection, seal checking, layered water injection quantity adjustment, well washing and the like through the tubular column, and the packer step-by-step deblocking and water distribution operation mode of a water distributor central channel are realized. The packer setting device can sequentially unseal a plurality of packers from top to bottom, can effectively solve the problems of large tripping load and high operation risk of the conventional multi-stage separate injection pipe column, meets the packer setting requirement under the closed state of the water nozzle, improves the measurement and adjustment efficiency, the success rate and the measurement and adjustment precision, and meets the multi-stage separate injection requirement of a highly-deviated well, a deep well and a produced water reinjection well. The seal checking effect can be directly read on the ground, the seal checking efficiency and the success rate are high, and the data are reliable.
Description
Technical field
The present invention relates to a kind of multilevel hierarchy water injection string and its method of work, belongs to mechanical delamination water injection well production technique
Field.
Background technology
Seperated layer water injection is to separate each water filling interval using packer, and each interval Geologic Requirements water distribution is pressed with injection well downhole flow regulator, with
Expand floood conformance volume, improve water-flooding performance.Packer effectively sets and unsealed and the successful test of stratified water amount
Allocate has conclusive effect to the validity and waterflooding development effect of separate injection tubing string.
With the progress of oil field development technical merit, multilevel hierarchy water injection well increases year by year.At present, oil field multistage water injection well
Separate injection tubing string mainly uses Y341 packers and bridge type eccentric injection mandrel.During Y341 removing seal for packer, due to overall upper lifting pipe post,
So that the deblocking load of packers at different levels is acted on tubing string simultaneously, so as to increase deblocking load, increase operating risk, limitation is more
Level dispensing ability.The water nozzle of bridge type eccentric injection mandrel be arranged on the inclined hole of injection well downhole flow regulator in, it is necessary to finely mechanical guiding, positioning and
Dropping-fishing test is realized in docking.With the injection well downhole flow regulator on high angle hole, deep-well and produced-water reinjection well, by hole deviation, well depth, recovered water
The factors such as water quality, injection well downhole flow regulator guiding and measurement and adjustment instrument device precision influence, and exist and are measured and tuned into power is low, efficiency is low and operating risk is big etc.
Problem.
The content of the invention
It is an object of the invention to provide a kind of multilevel hierarchy water injection string and its method of work, to improve the survey of injection well downhole flow regulator
Examination allotment success rate and efficiency.
This multilevel hierarchy water injection string is sequentially connected the bridge-types at different levels separated by gradually deblocking packers at different levels by oil pipe
Concentric roater regulator, most next stage injection well downhole flow regulator lower end are sequentially connected preset seating nipple, double acting valve, screen casing and silk by oil pipe
It is stifled.
This multilevel hierarchy water injection string by tubing string connect into well, packer setting, water filling, test envelope, regulation seperated layer water injection
The processing step such as amount and well-flushing, realizes efficient packer gradually deblocking and injection well downhole flow regulator central passage water distribution work pattern.
The present invention insulates reservoir using gradually deblocking packer, and the deblocking successively of multiple packers from top to bottom can be achieved,
Can effectively solve the problem that conventional multistage separate injection tubing string trip-out load is big and operating risk is high.Using bridge-type concentric roater regulator water filling
The packer setting demand under water nozzle closed mode can be met, survey can be improved and adjust efficiency, success rate and survey tune precision, met big oblique
Spend the multistage water injection requirement of well, deep-well and produced-water reinjection well.Envelope effect can be tested in ground directly-reading, test envelope efficiency and success rate
High, Dependable Data.
Brief description of the drawings
Fig. 1 is multilevel hierarchy water injection string structural representation.
Embodiment
Embodiment：
Reference picture 1 further illustrates to embodiments of the invention：
This multilevel hierarchy water injection string is sequentially connected the bridge-types at different levels separated by gradually deblocking packers 1 at different levels by oil pipe
Concentric roater regulator 2, most next stage injection well downhole flow regulator lower end are sequentially connected preset seating nipple 3, double acting valve 4, the and of screen casing 5 by oil pipe
Plug 6.
The method of work of multilevel hierarchy water injection string is as follows：
1) connect multilevel hierarchy water injection string and be lowered into predetermined position in pit shaft, with supporting magnetic orientation device school
Deep downhole tool；
2) well mouth oil pipe water filling gate is opened, the liquid feeding pressure into oil pipe, sets piston in gradually deblocking packers 1 at different levels
Related lock ring is promoted, and cutting sets pin, compresses packing element, and lock ring is connected to lock ring and hung up, and realizes packer settings at different levels；
3) the concentric downhole measurement adjusting instrument of tripping in out of oil pipe, water filling is carried out after being docked with bridge-type concentric roater regulators 2 at different levels；
4) the electronic direct-reading seal-checking instrument of tripping in out of oil pipe, realized after being docked with bridge-type concentric roater regulators 2 at different levels and test envelope, with true
Packers at different levels are protected effectively to set；
5) the tripping in downhole measurement adjusting instrument out of oil pipe, after being docked with bridge-type concentric roater regulators 2 at different levels, concentric roater regulator 2 is rotated,
Regulation activity water nozzle aperture, regulation layered waterflooding quantity is required according to injection allocation；
6) wellhead casing pipe gate is opened, the liquid feeding pressure into oil jacket annular space, promotes well-flushing piston and compression spring, opens packing
Device well-flushing passage；Flushing fluid flows through gradually deblocking packer 1, screen casing 5, double acting valve 4 and preset seating nipples 3 at different levels successively,
Well head is returned out out of oil pipe；
7) this multilevel hierarchy water injection string is above carried with working rig at well head, oil pipe drives the gradually deblocking packer of the first order
1 top connection is moved upwards, is driven seating nipple to cut deblocking pin, is pulled pressure cap, well-flushing piston and compression spring to move up,
Space is conceded, reclaims packing element, realizes removing seal for packer；Continue upper lifting pipe post, gradually deblocking packers 1 at different levels is realized successively
Deblocking.
Claims (1)
1. a kind of method of work of multilevel hierarchy water injection string, its concrete technology step are as follows：
1) connect multilevel hierarchy water injection string and be lowered into predetermined position in pit shaft, with supporting magnetic orientation device school
Deep downhole tool；
2) well mouth oil pipe water filling gate is opened, the liquid feeding pressure into oil pipe, sets piston company in gradually deblocking packers (1) at different levels
Band lock ring is promoted, and cutting sets pin, compresses packing element, and lock ring is connected to lock ring and hung up, and realizes packer settings at different levels；
3) the concentric downhole measurement adjusting instrument of tripping in out of oil pipe, water filling is carried out after being docked with bridge-type concentric roater regulators (2) at different levels；
4) the electronic direct-reading seal-checking instrument of tripping in out of oil pipe, realized after being docked with bridge-type concentric roater regulators (2) at different levels and test envelope, to ensure
Packers at different levels are effectively set；
5) the tripping in downhole measurement adjusting instrument out of oil pipe, after being docked with bridge-type concentric roater regulators (2) at different levels, concentric roater regulator (2) is rotated,
Regulation activity water nozzle aperture, regulation layered waterflooding quantity is required according to injection allocation；
6) wellhead casing pipe gate is opened, to oil sets annular space liquid feeding pressure, well-flushing piston and compression spring is promoted, opens packer
Well-flushing passage；Flushing fluid flows through gradually deblocking packers at different levels (1), screen casing (5), double acting valve (4) and preset work successively
Cylinder (3), returns out well head out of oil pipe；
7) this multilevel hierarchy water injection string is above carried with working rig at well head, oil pipe drives the gradually deblocking packer (1) of the first order
Top connection move upwards, drive seating nipple to cut deblocking pin, pull pressure cap, well-flushing piston and compression spring to move up,
Space is conceded, reclaims packing element, packer realizes deblocking；Continue upper lifting pipe post, make gradually deblocking packers at different levels (1) real successively
Now unseal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585664.4A CN104653157B (en) | 2013-11-19 | 2013-11-19 | Multi-stage separate-layer water injection string and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585664.4A CN104653157B (en) | 2013-11-19 | 2013-11-19 | Multi-stage separate-layer water injection string and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104653157A CN104653157A (en) | 2015-05-27 |
| CN104653157B true CN104653157B (en) | 2018-03-09 |
Family
ID=53244729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310585664.4A Active CN104653157B (en) | 2013-11-19 | 2013-11-19 | Multi-stage separate-layer water injection string and working method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104653157B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822291B (en) * | 2016-03-17 | 2017-09-12 | 北京金科龙石油技术开发有限公司 | Water injection well multistage injection well downhole flow regulator sensing data communication network construction method and structure |
| CN106089150A (en) * | 2016-07-18 | 2016-11-09 | 西安石油大学 | A kind of adaptive layered water filling adjusting control valve |
| CN107762458A (en) * | 2016-08-16 | 2018-03-06 | 中国石油天然气股份有限公司 | Concentric separate injection and small-displacement acidification integrated system and process |
| CN109681161B (en) * | 2018-04-03 | 2024-07-19 | 中国石油化工股份有限公司 | Multi-layer quality-dividing and pressure-dividing water injection method and water injection pipe column |
| CN110905462B (en) * | 2018-09-14 | 2021-11-02 | 中国石油天然气股份有限公司 | Water injection packer |
| CN112709555B (en) * | 2019-10-24 | 2023-02-21 | 中国石油化工股份有限公司 | Efficient separate-prevention separate-injection tubular column for water injection well and construction method |
| CN113323649B (en) * | 2021-07-26 | 2023-01-24 | 东营市鑫吉石油技术有限公司 | Integrated flow-collecting bridge type testing, adjusting, inspecting, sealing and injecting system and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201843594U (en) * | 2010-11-11 | 2011-05-25 | 中国石油天然气股份有限公司 | Fine separate layer water injection process pipe column |
| CN102839954A (en) * | 2011-06-24 | 2012-12-26 | 中国石油化工股份有限公司 | Method for achieving separated layer water distribution by pressure pulse |
| CN202832438U (en) * | 2012-08-23 | 2013-03-27 | 中国石油天然气股份有限公司 | Long-acting layered water injection string for deep well |
| CN202832439U (en) * | 2012-08-23 | 2013-03-27 | 中国石油天然气股份有限公司 | Oil field in-situ subdivision water injection process pipe string |
-
2013
- 2013-11-19 CN CN201310585664.4A patent/CN104653157B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201843594U (en) * | 2010-11-11 | 2011-05-25 | 中国石油天然气股份有限公司 | Fine separate layer water injection process pipe column |
| CN102839954A (en) * | 2011-06-24 | 2012-12-26 | 中国石油化工股份有限公司 | Method for achieving separated layer water distribution by pressure pulse |
| CN202832438U (en) * | 2012-08-23 | 2013-03-27 | 中国石油天然气股份有限公司 | Long-acting layered water injection string for deep well |
| CN202832439U (en) * | 2012-08-23 | 2013-03-27 | 中国石油天然气股份有限公司 | Oil field in-situ subdivision water injection process pipe string |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104653157A (en) | 2015-05-27 |
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