CN104100224A - Oil well water plugging method - Google Patents
Oil well water plugging method Download PDFInfo
- Publication number
- CN104100224A CN104100224A CN201310114412.3A CN201310114412A CN104100224A CN 104100224 A CN104100224 A CN 104100224A CN 201310114412 A CN201310114412 A CN 201310114412A CN 104100224 A CN104100224 A CN 104100224A
- Authority
- CN
- China
- Prior art keywords
- water
- stratum
- agent
- polyacrylamide
- water shutoff
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- 235000020681 well water Nutrition 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 12
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 6
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims abstract description 4
- 241000209094 Oryza Species 0.000 claims description 12
- 235000007164 Oryza sativa Nutrition 0.000 claims description 12
- 235000009566 rice Nutrition 0.000 claims description 12
- 241000237858 Gastropoda Species 0.000 claims description 5
- 235000013339 cereals Nutrition 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 229940079827 sodium hydrogen sulfite Drugs 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract 2
- 239000013543 active substance Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000002981 blocking agent Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a water plugging method for an oil well; injecting polyacrylamide, LJ-2 cross-linking agent and large-particle water-swelling water shutoff agent into stratum for 3-5 m, wherein the injection amount is 18-40m per 1 m perforation section thickness3(ii) a And a second slug, injecting polyacrylamide and the small-particle water-swelling water shutoff agent into the stratum for 3-5 m, wherein the injection amount is 25-45m per 1 m perforation section thickness3(ii) a Thirdly, injecting polyacrylamide and LJ-2 cross-linking agent water shutoff agent into the stratum for 7-9 m, wherein the injection amount is 35-55m per 1 m of perforation section thickness3(ii) a Fourthly, the polyacrylamide, the acrylamide, the cross-linking agent, the oil-soluble resin and the OP-10 surface are coatedThe active agent and the sodium bisulfite water shutoff agent are injected into the stratum for 1-2 m, and the injection amount per 1 m perforation section thickness is 2-4m3(ii) a The method realizes the plugging of cracks and large pore passages of the water flooded oil well, enables oil flow to flow out from other small pore passages around, reduces the water content, and improves the single well liquid production and the single well daily oil yield.
Description
Technical field
The present invention relates to a kind of oilwell water shutoff method, especially relate to plugging function and the intensity of four slugs of oilwell water shutoff.
Background technology
The three existing oilwell water shutoff methods of factory of recovering the oil are to rely on producer and colleges and universities to study and field conduct, because shutoff method is of a great variety, different blocks shutoff method used lacks specific aim, do not form rounded system, be not suitable with the effective exploitation of low permeability oil field, cause construction after efficient on the low side, the cycle that takes effect is short, individual well day oil increment low.The powder performance evaluation simultaneously relating in oilwell water shutoff method also lacks monitoring means.Therefore, invent a kind of oilwell water shutoff method that cost is low, effective, the cycle is long, be not only applicable to LOW PERMEABILITY OILFIELD DEVELOPMENT demand, and after site of deployment, crack and the macropore of effective shutoff water logging oil well, oil stream is flowed out from other aperture road around, thereby reduce moisturely, improve single well liquid measure, individual well day produce oil.
Summary of the invention
The object of this invention is to provide a kind of oilwell water shutoff method, this oilwell water shutoff method is to be divided into four slugs oilwell water shutoff agent is injected to oil well, slug one is the temperature by stratum, plastic under the regular hour, crack in shutoff stratum and macropore, slug two is to guarantee that blocking agent effectively enters earth formation deep, slug one is protected simultaneously, slug three is migrations continuously in reservoir of porous medium, utilize formation temperature, further effective shutoff is carried out in fracture duct, slug four enters behind stratum under the impact of formation temperature, become fast the colloid of jelly shape, realize the sealing of final step, preventing that blocking agent that leading portion injects from returning tells.
Oilwell water shutoff method of the present invention is to be divided into four slugs oilwell water shutoff agent is injected to oil well:
Slug one, according to mass percent concentration, in water, add the acrylamide bulky grain hydroexpanding body preparation water shutoff agent that 0.3% polyacrylamide, 0.35%LJ-2 crosslinking agent, 4% particle diameter are 5-15mm, after preparing, inject 3-5 rice to stratum, every 1 meter of perforated interval thickness injection rate is 18-40m
3;
Slug two adds the acrylamide granule hydroexpanding body preparation water shutoff agent that 0.2% polyacrylamide and 2% particle diameter are 2-5mm according to mass percent concentration in water, after preparing, injects 3-5 rice to stratum, and every 1 meter of perforated interval thickness injection rate is 25-45m
3;
Slug three adds 0.3% polyacrylamide and 0.4%LJ-2 crosslinking agent preparation water shutoff agent according to mass percent concentration in water, after preparing, injects 7-9 rice, every 1 meter of perforated interval thickness injection rate 35-55m to stratum
3;
Slug four, according to mass percent concentration, in water, add 0.3% polyacrylamide, 8% acrylamide, 0.2% crosslinking agent, 8% oil-soluble resin, 0.2%OP-10 surfactant and 0.1% sodium hydrogensulfite preparation water shutoff agent, after preparing, to stratum, inject 1-2 rice, every 1 meter of perforated interval thickness injection rate is 2-4m
3.
The present invention has following effect:
(1) the present invention is specially adapted to the effective exploitation of low permeability oil field.
(2) measure effect is good, instant effect, and after using at the scene, oil well instant effect, the moisture range of decrease is large, and liquid measure rises many, and innage increases day by day.
(3) cost is low, economically feasible.The water blockoff medicament expense that a bite oil well needs is 11.5 ten thousand yuan, and operating expenses is 50,000 yuan, adds up to 16.5 ten thousand yuan, than other shutoff methods, saves 8.5 ten thousand yuan.
(4) life cycle is long.This oilwell water shutoff method is used at the scene and is reached rear effective period more than 200 days, than general shutoff method, extends 110 days effective period.
The specific embodiment
Field conduct is to utilize cementing truck to divide following step to inject stratum four slugs:
Step 1, after slug one prepares according to the ratio of 0.3% polyacrylamide, 0.35%LJ-2 crosslinking agent, 4% bulky grain hydroexpanding body, injects 3-5 rice to stratum, every 1 meter of perforated interval thickness injection rate is 18-40m
3.
Step 2, after slug two prepares according to 0.2% polyacrylamide and 2% granule hydroexpanding body ratio, injects to stratum and to stratum, injects 3-5 rice, and every 1 meter of perforated interval thickness injection rate is 25-45m
3.
Step 3, after slug three prepares according to 0.3% polyacrylamide and 0.4%LJ-2 crosslinking agent ratio, injects 7-9 rice, every 1 meter of perforated interval thickness injection rate 35-55m to stratum
3.
Step 4, after slug four prepares according to 0.3% polyacrylamide, 8% acrylamide, 0.2% crosslinking agent, 8% oil-soluble resin, 0.2% surfactant and 0.1% sodium hydrogensulfite ratio, injects 1-2 rice to stratum, every 1 meter of perforated interval thickness injection rate is 2-4m
3.
Claims (1)
1. an oilwell water shutoff method, is characterized in that: be divided into four slugs oilwell water shutoff agent is injected to oil well:
Slug one, according to mass percent concentration, in water, add the acrylamide bulky grain hydroexpanding body preparation water shutoff agent that 0.3% polyacrylamide, 0.35%LJ-2 crosslinking agent, 4% particle diameter are 5-15mm, after preparing, inject 3-5 rice to stratum, every 1 meter of perforated interval thickness injection rate is 18-40m
3;
Slug two adds the acrylamide granule hydroexpanding body preparation water shutoff agent that 0.2% polyacrylamide and 2% particle diameter are 2-5mm according to mass percent concentration in water, after preparing, injects 3-5 rice to stratum, and every 1 meter of perforated interval thickness injection rate is 25-45m
3;
Slug three adds 0.3% polyacrylamide and 0.4%LJ-2 crosslinking agent preparation water shutoff agent according to mass percent concentration in water, after preparing, injects 7-9 rice, every 1 meter of perforated interval thickness injection rate 35-55m to stratum
3;
Slug four, according to mass percent concentration, in water, add 0.3% polyacrylamide, 8% acrylamide, 0.2% crosslinking agent, 8% oil-soluble resin, 0.2%OP-10 surfactant and 0.1% sodium hydrogensulfite preparation water shutoff agent, after preparing, to stratum, inject 1-2 rice, every 1 meter of perforated interval thickness injection rate is 2-4m
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114412.3A CN104100224B (en) | 2013-04-03 | 2013-04-03 | Oil well water plugging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114412.3A CN104100224B (en) | 2013-04-03 | 2013-04-03 | Oil well water plugging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104100224A true CN104100224A (en) | 2014-10-15 |
| CN104100224B CN104100224B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310114412.3A Active CN104100224B (en) | 2013-04-03 | 2013-04-03 | Oil well water plugging method |
Country Status (1)
| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104610950A (en) * | 2014-12-31 | 2015-05-13 | 中国石油天然气股份有限公司 | Suspended gel particle plugging agent and application thereof |
| CN105733545A (en) * | 2016-01-20 | 2016-07-06 | 陕西海山环保能源科技有限公司 | Profile control and displacement agent for oily sludge profile control and displacement plugging and technique thereof |
| CN106468152A (en) * | 2015-08-14 | 2017-03-01 | 中国石油化工股份有限公司 | A kind of thick oil horizontal well intensity adjustable shutoff method |
| CN108019192A (en) * | 2016-11-01 | 2018-05-11 | 中国石油化工股份有限公司 | A kind of hydroexpanding body blocking agent profile control blocks removal of bridge formation method |
| CN111087997A (en) * | 2018-10-24 | 2020-05-01 | 中国石油化工股份有限公司 | Method for blocking water in oil reservoir and oil well |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104610950A (en) * | 2014-12-31 | 2015-05-13 | 中国石油天然气股份有限公司 | Suspended gel particle plugging agent and application thereof |
| CN104610950B (en) * | 2014-12-31 | 2017-12-01 | 中国石油天然气股份有限公司 | Suspended gel particle plugging agent and application thereof |
| CN106468152A (en) * | 2015-08-14 | 2017-03-01 | 中国石油化工股份有限公司 | A kind of thick oil horizontal well intensity adjustable shutoff method |
| CN106468152B (en) * | 2015-08-14 | 2018-10-19 | 中国石油化工股份有限公司 | A kind of thick oil horizontal well intensity adjustable shutoff method |
| CN105733545A (en) * | 2016-01-20 | 2016-07-06 | 陕西海山环保能源科技有限公司 | Profile control and displacement agent for oily sludge profile control and displacement plugging and technique thereof |
| CN105733545B (en) * | 2016-01-20 | 2018-08-24 | 陕西海山能源发展有限公司 | A kind of formula and its preparation process of greasy dirt transfer drive closure transfer drive medicament |
| CN108019192A (en) * | 2016-11-01 | 2018-05-11 | 中国石油化工股份有限公司 | A kind of hydroexpanding body blocking agent profile control blocks removal of bridge formation method |
| CN108019192B (en) * | 2016-11-01 | 2019-11-08 | 中国石油化工股份有限公司 | A kind of hydroexpanding body blocking agent profile control blocking removal of bridge formation method |
| CN111087997A (en) * | 2018-10-24 | 2020-05-01 | 中国石油化工股份有限公司 | Method for blocking water in oil reservoir and oil well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104100224B (en) | 2016-12-28 |
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