CN103225496B - Profile control method for immobile pipe column of injection well - Google Patents
Profile control method for immobile pipe column of injection well Download PDFInfo
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- CN103225496B CN103225496B CN201310118133.4A CN201310118133A CN103225496B CN 103225496 B CN103225496 B CN 103225496B CN 201310118133 A CN201310118133 A CN 201310118133A CN 103225496 B CN103225496 B CN 103225496B
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- profile control
- gel
- oil pipe
- injection well
- injection
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- 238000002347 injection Methods 0.000 title claims abstract description 28
- 239000007924 injection Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000007863 gel particle Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000000499 gel Substances 0.000 claims description 28
- 239000002981 blocking agent Substances 0.000 claims description 19
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 7
- 235000020681 well water Nutrition 0.000 claims description 5
- 239000002349 well water Substances 0.000 claims description 5
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 238000011001 backwashing Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 26
- 230000000694 effects Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a profile control method for an immobile pipe column of a split injection well, which comprises the following steps of fishing up a water nozzle of the split injection well, and injecting clear water and a high-viscosity temporary plugging agent into a shaft to perform shaft pretreatment; gel particles, inorganic gel and weak gel are injected from an oil pipe in sequence to perform profile control, and the diameter of the gel particles is controlled to ensure that the gel particles can pass through a water nozzle; and (3) washing the shaft by using the high-efficiency gel breaker, reducing the viscosity of the high-viscosity temporary plugging agent, backwashing the high-viscosity temporary plugging agent out of the shaft, and completing the profile control operation of the non-movable pipe column of the split injection well. The method is simple to operate, and saves time and labor.
Description
Technical field
The present invention relates to petroleum production engineering field, be specifically related to a kind of dispensing well fixed tubular column profile control method.
Background technology
During oil field dispensing well profile control operation at present, first have to trip out former well separate injection tubing string, more lower profile control tubing string,
Profile control trips out profile control tubing string after completing, then under enter separate injection tubing string and carry out dispensing.Lower tubular column is played during this
Four times, its workload is big, and operating cost is high, and the engineering time is long.And must be to water before lift pipe string
Well pressure release, extends the engineering time, increases workload.After profile control completes, lift pipe string is the most easily because letting out
Pressure causes that blocking agent is counter tells to pit shaft, affects profile control effect.
Summary of the invention
In order to solve above technical problem, the present invention provides a kind of dispensing well fixed tubular column profile control method,
Eliminate the step repeatedly playing lower tubular column, saved the engineering time, it is to avoid blocking agent is counter tells.
This invention is achieved through the following technical solutions:
A kind of dispensing well fixed tubular column profile control method, comprises the steps:
Water nozzle on the injection well downhole flow regulator of dispensing well water injection string is picked up, vacates and lay water on described injection well downhole flow regulator
The hole of mouth, in described oil pipe, injected clear water and height glue diverting agent and carry out described oil pipe and oil jacket annular space
Pretreatment；
It is implanted sequentially gel particle, inorganic gel and Weak Gels to described oil pipe and carries out profile control, described solidifying
The diameter of glue granule meets the requirement in the hole by laying water nozzle on injection well downhole flow regulator；
Use efficient gel breaker to clean described oil pipe, reduce the viscosity of the viscous diverting agent of height, by viscous for height the most stifled
Agent backwash goes out described oil pipe, completes dispensing well fixed tubular column profile control operation.
In technique scheme, it is that partially hydrolyzed polyacrylamide (PHPA) passes through crosslinking that described height glues diverting agent
Formed.
In technique scheme, described gel particle, inorganic gel, three kinds of blocking agents of Weak Gels
Grain diameter is all in the range of 1-3mm.
In technique scheme, the total injection of described gel particle, inorganic gel and Weak Gels leads to
Cross formula V=π R2H ф (1-Sor) calculate, wherein R is the dispensing well shaft radius needing profile control, and H is
Profile control formation thickness, ф is profile control formation average porosity, SorFor remaining oil saturation.
In technique scheme, described efficient gel breaker is Ammonium persulfate. built agent.
The dispensing well fixed tubular column profile control method of the present invention is owing to having picked up water nozzle, directly by former tubing string
Oil pipe in injection profile blocking agent, eliminate the step repeatedly playing lower tubular column, decrease workload, joint
About engineering time, it is to avoid because lift pipe string causes the anti-phenomenon told of blocking agent.
Accompanying drawing explanation
The dispensing well water injection string structural representation that Fig. 1 provides for the embodiment of the present invention.
The dispensing well profile control tubular column structure schematic diagram that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
With embodiment, technical scheme is described in detail below in conjunction with the accompanying drawings.
See Fig. 1, be a kind of dispensing well water injection string structural representation of embodiment of the present invention offer,
All being picked up by water nozzle 3 on eccentric injection mandrel 2 before carrying out profile control construction, it is dispensing well and adjusts
Cut open tubing string, see Fig. 2.Inject 30 side's clear water from oil pipe 1, inject from oil pipe 1 high viscous temporary the most again
Blocking agent；High viscous diverting agent can oil pipe 1 following to injection well downhole flow regulator and oil jacket annular space 5, oil jacket annular space i.e. oil
Space between pipe 1 and sleeve pipe 4, blocks up temporarily to oil pipe 1 and oil jacket annular space 5, prevents follow-up stifled
Agent settles wherein.Then, more successively inject the gel particle as blocking agent, inorganic solidifying from oil pipe 1
Glue, Weak Gels；Gel particle, inorganic gel, Weak Gels total consumption by V=π R2H ф (1-Sor)
Obtaining, R is the dispensing well shaft radius needing profile control, is 25 meters, and H is profile control formation thickness, for
13 meters, ф is profile control formation average porosity, is 12.56%, and remaining oil saturation (is adopted through a certain
Oil method or displacement effect after, still can not extraction and residue in the crude oil in oil reservoir hole be referred to as remnants
Oil, its volume percent of shared volume in blowhole is referred to as residual oil saturation Sor), this example
In be 40%.Therefore V=3.14 × 252× 13 × 12.56% × (1-40%) ≈ 1923m3.Described gel
Grain, inorganic gel, three kinds of blocking agents of Weak Gels particle diameter all in the range of 1-3mm, blocking agent granule
The size of diameter is mainly installed the hole size of water nozzle by injection well downhole flow regulator, the expansion character of gel particle determines,
If gel diameter is excessive, it can not pass through injection well downhole flow regulator, and after additionally entering stratum, imbibition makes it
Migrate relatively difficult, be therefore extremely difficult to earth formation deep closure crack；Gel diameter is too small, after water suction
Intensity can reduce, and additionally diameter is too small, is easy to transport after entering stratum under bigger production pressure
Move so that the water breakthrough blocking agent of injection enters stratum.
Blocking agent enters oil jacket annular space 5 by laying the hole of water nozzle 3 on eccentric injection mandrel 2, then by set
Perforation on pipe 4 enters stratum.Gel particle can block crack big in stratum, and inorganic gel is right
Crack and big duct are further blocked, and strengthen the intensity of blocking agent, and Weak Gels is to fine pore
Blocking, and play the effect of the displacement of reservoir oil, three kinds of blocking agents comprehensive uses and reaches to block up, adjusts, drives phase
In conjunction with.Owing to having picked up water nozzle 3, the throttling of water nozzle 3 is not had to ensure that the throughput of blocking agent,
Conventional 1.5-3m can be reached3The throughput of/h, thereby ensure that gel particle, inorganic gel, weak solidifying
Glue is sufficiently injected at short notice, thus ensures the filling at short notice of relatively large fracture and duct in stratum
Enfeoffment is blocked up, and plays preferable profile control effect.The size controlling gel particle makes it can be joined by bias
The hole laying water nozzle 3 on hydrophone 2 can reach again preferable profile control effect, and after profile control, well water filling is normal,
Injection pressure rises, and the water-absorption surface water suction on water injection well stratum is uniformly.
After blocking agent is injected, inject efficient gel breaker, closing well about two hours, then carry out well-flushing, directly
Reach tubing string unimpeded, and the water quality of tubing string export and import is the same.
Recovering to tubing string water filling, profile control construction terminates.
The dispensing well fixed tubular column profile control method of the present invention is owing to having picked up water nozzle, directly by former tubing string
Oil pipe in injection profile blocking agent, eliminate the step repeatedly playing lower tubular column, workload reduces, operation
Low cost, saved the engineering time, profile control complete after without lift pipe string, it is to avoid because pressure release causes blocking agent
Counter tell to pit shaft, it is ensured that profile control effect.
It should be noted last that, above example only in order to the technology implementation scheme of this material to be described and
Unrestricted, although the present invention being described in detail with reference to preferred embodiment, the common skill of this area
Art personnel should be appreciated that and can modify technical scheme or equivalent, and not
Departing from the spirit and scope of technical solution of the present invention, it all should be contained in scope of the presently claimed invention
In the middle of.
Claims (1)
1. a dispensing well fixed tubular column profile control method, it is characterised in that: comprise the steps,
Water nozzle (3) on the injection well downhole flow regulator (2) of dispensing well water injection string is picked up, vacates injection well downhole flow regulator (2)
On lay the hole of water nozzle, in oil pipe (1), injected clear water and height glue diverting agent to oil pipe (1) and oil
Set annular space (5) carries out pretreatment；
It is implanted sequentially gel particle, inorganic gel and Weak Gels to oil pipe (1) and carries out profile control, described solidifying
The diameter of glue granule meets the requirement in the hole by laying water nozzle on injection well downhole flow regulator (2)；
Use efficient gel breaker to clean described oil pipe (1), reduce the viscosity of the viscous diverting agent of height, height is glued
Diverting agent backwash goes out described oil pipe (1), completes dispensing well fixed tubular column profile control operation；Described height is viscous temporarily
Blocking agent is that partially hydrolyzed polyacrylamide (PHPA) passes through to be cross-linked to form；Described gel particle, inorganic gel,
The particle diameter of three kinds of blocking agents of Weak Gels is all in the range of 1-3mm；Described gel particle, inorganic gel
Formula V=π R is passed through with the total injection of Weak Gels2Hф(1-Sor) calculate, wherein R is for needing profile control
Dispensing well shaft radius, H is the formation thickness of profile control, and ф is the formation average porosity of profile control,
Sor is remaining oil saturation；Described efficient gel breaker is Ammonium persulfate. built agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310118133.4A CN103225496B (en) | 2013-04-07 | 2013-04-07 | Profile control method for immobile pipe column of injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310118133.4A CN103225496B (en) | 2013-04-07 | 2013-04-07 | Profile control method for immobile pipe column of injection well |
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| Publication Number | Publication Date |
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| CN103225496A CN103225496A (en) | 2013-07-31 |
| CN103225496B true CN103225496B (en) | 2016-12-28 |
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| CN201310118133.4A Active CN103225496B (en) | 2013-04-07 | 2013-04-07 | Profile control method for immobile pipe column of injection well |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968635B (en) * | 2017-03-28 | 2019-03-19 | 四川光亚聚合物化工有限公司 | A kind of efficient depth profile control method of Low Damage |
| CN108825158A (en) * | 2018-06-15 | 2018-11-16 | 中国石油集团长城钻探工程有限公司 | A kind of bushing pipe reinforcing pre- blocking method of well |
| CN111827920B (en) * | 2019-04-22 | 2022-11-04 | 中国石油天然气股份有限公司 | Layered gas channeling plugging process for fireflooding production well |
| CN114961631B (en) * | 2021-02-24 | 2024-06-21 | 中国石油化工股份有限公司 | Compound water shutoff method for gel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480627A (en) * | 2003-08-05 | 2004-03-10 | 中国石油天然气股份有限公司 | Water injection well oil-containing sludge depth profile control technology |
| CN201810292U (en) * | 2010-10-22 | 2011-04-27 | 中国石油天然气股份有限公司 | Separated layer water injection process tubular column |
| CN102619493A (en) * | 2012-03-28 | 2012-08-01 | 中国石油天然气股份有限公司 | Profile control and water plugging method for thickened oil horizontal well of screen pipe well completion and combination device thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752403A (en) * | 2004-09-22 | 2006-03-29 | 中国石油天然气股份有限公司 | Composite slug method large channel oil reservoir deep profile control method |
| US20070204989A1 (en) * | 2006-02-28 | 2007-09-06 | Hongxin Tang | Preformed particle gel for conformance control in an oil reservoir |
| WO2009051881A1 (en) * | 2007-10-16 | 2009-04-23 | Exxonmobil Upstream Research Company | Fluid control apparatus and methods for production and injection wells |
| CN103013480A (en) * | 2012-12-27 | 2013-04-03 | 大庆中油泰克石油技术服务有限公司 | Modified petroleum coke granule composite profile control water blocking agent and multi-round bidirectional blocking control technology |
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2013
- 2013-04-07 CN CN201310118133.4A patent/CN103225496B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480627A (en) * | 2003-08-05 | 2004-03-10 | 中国石油天然气股份有限公司 | Water injection well oil-containing sludge depth profile control technology |
| CN201810292U (en) * | 2010-10-22 | 2011-04-27 | 中国石油天然气股份有限公司 | Separated layer water injection process tubular column |
| CN102619493A (en) * | 2012-03-28 | 2012-08-01 | 中国石油天然气股份有限公司 | Profile control and water plugging method for thickened oil horizontal well of screen pipe well completion and combination device thereof |
Non-Patent Citations (2)
| Title |
|---|
| 厚油层高渗透带化学封堵技术研究;闫建文;《大庆石油学院硕士学位论文》;20070115;第6.1.4节 * |
| 埕岛油田不动管柱堵水方法研究;王建国;《中国石油大学硕士学位论文》;20100315;第1.1.2.4节、第2.4节、第3.2节、第4.1节、第5.3节，图4-1 * |
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