CN103666418B - Gel profile control agent - Google Patents
Gel profile control agent Download PDFInfo
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- CN103666418B CN103666418B CN201210347847.8A CN201210347847A CN103666418B CN 103666418 B CN103666418 B CN 103666418B CN 201210347847 A CN201210347847 A CN 201210347847A CN 103666418 B CN103666418 B CN 103666418B
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- agent
- water
- oil
- gel
- salt
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- 229910052742 iron Inorganic materials 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- -1 iron ions Chemical class 0.000 claims description 23
- 239000002332 oil field water Substances 0.000 claims description 15
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 12
- 230000015784 hyperosmotic salinity response Effects 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 6
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 6
- 235000010265 sodium sulphite Nutrition 0.000 claims description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical group NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 4
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical group [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 4
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 4
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001488 sodium phosphate Substances 0.000 claims description 3
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical group [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- 239000003129 oil well Substances 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 abstract description 5
- 239000003431 cross linking reagent Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 230000005465 channeling Effects 0.000 abstract 2
- 230000033558 biomineral tissue development Effects 0.000 abstract 1
- 230000018109 developmental process Effects 0.000 abstract 1
- 239000012716 precipitator Substances 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 229920006037 cross link polymer Polymers 0.000 description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910001448 ferrous ion Inorganic materials 0.000 description 3
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 230000010165 autogamy Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/5045—Compositions based on water or polar solvents containing inorganic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a gel profile control agent, which consists of an iron ion precipitator, a temperature-resistant and salt-tolerant polymer, a cross-linking agent, a stabilizer and oilfield field water. The gel plugging agent is mainly used for plugging a water channeling channel in a water injection development oil field, reducing the water yield of an oil well and increasing the oil yield of the oil well. The gel plugging agent is suitable for plugging stratum water channeling passages of oil fields with the mineralization degree of more than 10000mg/L, the temperature of 95-155 ℃ and the iron ion content of 5-100 mg/L.
Description
Technical field
The present invention relates to the cross-linked polymer gel of iron ion in the anti-Oil Field water of a kind of energy, adjust stifled operation for oil field.
Background technology
The present invention is used for waterflooding oil field shutoff water breakthrough passage.Oil-bearing stratum flooding exploitation, namely from well water filling, sweeps oil in oil reservoir to oil well by water drive.Due to many reasons such as oil reservoir self nonuniformity are stronger, between oil and water well, easily form the water breakthrough passage of the direct channelling of water to oil well, cause displacement of reservoir oil by filling water efficiency low.Asking for solving this, usually taking " adjusting stifled " measure, namely injecting the shutoff water breakthrough passages such as cross-linked polymer gel to well or oil well.
Cross-linked polymer gel is the overall gel that water-soluble polymers (being generally polyacrylamide and derivative thereof), Oil Field water and linking agent are formed.Iron ion content low as far as possible (usually requiring that ferrous iron content is less than 2mg/L) in Oil Field water is required when conventional cross-linked polymer gel is prepared, because iron ion has very strong Degradation to polymer gel, cross-linked polymer gel can be made to lose original performances such as viscosity.
Existing polymer gel is difficult to stablize in the Oil Field water of ferric ion content, and under high temperature, iron ion degradation polymer gel is rapider.If initial viscosity is at the conventional polymer gel of 12000mPa.s, 110 DEG C, under iron ion content 10mg/L condition, within 14 days, viscosity is reduced to less than 50mPa.s.
The present invention will solve existing cross-linked polymer gel easily by problem that iron ion is degraded.
Summary of the invention
The present invention will provide a kind of Gel profile control agent, and solving existing Gel profile control agent can not iron-resistant ion, and namely Gel profile control agent is easily degraded by iron ion thus lost the problem of original performances such as viscosity.
For solving the problems of the technologies described above, inventive gel plugging agent is made up of the component of following mass percent: precipitation of iron ions agent 0.1 ~ 6%, salt-tolerance 0.1 ~ 6%, linking agent 0.1 ~ 6%, stablizer 0.1 ~ 6%, Oil Field water 90-99.5%.
Above-mentioned precipitation of iron ions agent is sodium phosphate or sodium sulphite.
Above-mentioned salt-tolerance is acrylamide and 2-acrylamide-2-methylpro panesulfonic acid multipolymer
Above-mentioned salt-tolerance is industrial goods dry powder, molecular weight more than 2,000 ten thousand.
Above-mentioned linking agent is water soluble phenol resin.
Above-mentioned linking agent phenol/formaldehyde mol ratio is between 0.2 ~ 0.75.
Aforementioned stable agent is sodium bisulfite or Resorcinol.
Above-mentioned Oil Field water salinity at more than 10000mg/L, iron ion content between 5 ~ 100mg/L.
Compare with existing Gel profile control agent, inventive gel plugging agent has the following advantages: have stronger iron-resistant ion energy, be applicable to Oil Field water iron ion content higher (>2.0mg/L), temperature 95 DEG C ~ 155 DEG C, field condition, resistance to iron ion scope reaches the resistance to iron ion of the existing gel of 5 ~ 100mg/L(and is less than 2mg/L); After gelling system plastic, viscosity is high, and gel viscosity can reach 100000mPa.s.
Embodiment
Needed for inventive gel plugging agent, component is industrial goods, can purchase from market.The nonmetal barrier packaging of liquid ingredient, with meeting GB9774-2002, solid ingredient requires that combined package bag is packed; Precipitation of iron ions agent, for making precipitation of iron ions medicament out in Oil Field water, is sodium phosphate or sodium sulphite; Salt-tolerance is generally the multipolymer of acrylamide and other monomer, salt-tolerance of the present invention is acrylamide and 2-acrylamide-2-methylpro panesulfonic acid multipolymer, its preparation method can be found in open source literature, market has industrial goods sell.
Its production method is: the suitable volumes open container preparation with agitating function.First add Oil Field water in a reservoir, water temperature 0 ~ 90 DEG C, starts stirring, then drop into precipitation of iron ions agent, stir 5 ~ 10 minutes, in 20 minutes, add all the other components, all the other components are without addition sequence requirement, and namely continuation stirring completes the present invention and prepare work after 20 minutes.
Below in conjunction with productive experiment example and embody rule process, the present invention is described in further detail:
Embodiment 1
Oil Field water, salinity 2.1 × 10
4mg/L; Ferrous ion content 17mg/L; Adopt salt-tolerance 0.2%, phenol/aldehyde than the phenolic resin crosslinking agent 0.2% being 0.4, precipitation of iron ions agent sodium sulphite 0.2%, stablizer sodium bisulfite 0.2%, Oil Field water 99.2%.Be sealed in the steel cylinder of inner polytetrafluoroethyllayer layer by the inventive gel prepared, at 110 DEG C, maintenance measures its viscosity in 21 days, and measuring its viscosity is 2.73 × 10
4mPa.s.After on-the-spot injection construction, significantly can increase well oil output and (inject 3000m
3, well group increases oil more than 5.0 tons).
Embodiment 2
Oil Field water, salinity 2.7 × 10
4mg/L; Ferrous ion content 37mg/L; Adopt salt-tolerance 0.4%, phenol/aldehyde than the phenolic resin crosslinking agent 0.4% being 0.5, precipitation of iron ions agent sodium sulphite 0.8%, stablizer sodium bisulfite 0.4%, Oil Field water 98.0%.Be sealed in the steel cylinder of inner polytetrafluoroethyllayer layer by the inventive gel prepared, at 115 DEG C, maintenance measures its viscosity in 14 days, and measuring its viscosity is 1.17 × 10
4mPa.s.After on-the-spot injection construction, significantly can increase well oil output and (inject 2000m
3, well group increases oil more than 3.0 tons).
Embodiment 3
Adopt autogamy high iron content ionized water, salinity 2.2 × 10
4mg/L; Ferrous ion content 57mg/L; Adopt salt-tolerance 1.0%, phenol/aldehyde is than the phenolic resin crosslinking agent 1.0% being 0.7, and precipitation of iron ions agent sodium sulphite 1.0%, stablizer Resorcinol 1.0%, from water distribution 96.0%.Be sealed in the steel cylinder of inner polytetrafluoroethyllayer layer by the inventive gel prepared, at 120 DEG C, maintenance measures its viscosity in 21 days, and measuring its viscosity is 2.3 × 10
4mPa.s.
Claims (1)
1. a Gel profile control agent, is characterized in that being made up of the component of following mass percent: precipitation of iron ions agent 0.1 ~ 6%, salt-tolerance 0.1 ~ 6%, linking agent 0.1 ~ 6%, stablizer 0.1 ~ 6%, Oil Field water 90-99.5%;
Described precipitation of iron ions agent is sodium phosphate or sodium sulphite;
Described salt-tolerance is acrylamide and 2-acrylamide-2-methylpro panesulfonic acid multipolymer;
Described salt-tolerance is industrial goods dry powder, molecular weight more than 2,000 ten thousand;
Described linking agent is water soluble phenol resin;
Described linking agent phenol/formaldehyde mol ratio is between 0.2 ~ 0.75;
Described stablizer is sodium bisulfite or Resorcinol;
Described Oil Field water salinity at more than 10000mg/L, iron ion content between 5 ~ 100mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210347847.8A CN103666418B (en) | 2012-09-18 | 2012-09-18 | Gel profile control agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210347847.8A CN103666418B (en) | 2012-09-18 | 2012-09-18 | Gel profile control agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103666418A CN103666418A (en) | 2014-03-26 |
| CN103666418B true CN103666418B (en) | 2016-03-09 |
Family
ID=50305209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210347847.8A Active CN103666418B (en) | 2012-09-18 | 2012-09-18 | Gel profile control agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103666418B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106318359B (en) * | 2015-07-03 | 2019-10-18 | 中国石油化工股份有限公司 | A kind of oil displacement agent system |
| CN105820804B (en) * | 2016-04-11 | 2018-09-04 | 中国石油天然气股份有限公司 | Hypersalinity-resistant oil reservoir deep liquid flow diversion chemical agent and preparation method and application thereof |
| CN109134776B (en) * | 2018-09-06 | 2020-11-03 | 西安石油大学 | Ready-to-use salt-resistant rubber plug and preparation method thereof |
| CN111073625B (en) * | 2018-10-22 | 2022-10-04 | 中国石油化工股份有限公司 | Modifying and flooding agent and preparation method thereof |
| CN109765143B (en) * | 2019-03-01 | 2022-09-30 | 延安中杰高新工贸有限公司 | Method and device for evaluating grading profile control and water shutoff effects |
| CN114437688B (en) * | 2020-11-02 | 2023-04-11 | 中国石油化工股份有限公司 | Plugging agent raw material composition, polymer gel plugging agent, preparation method and application of polymer gel plugging agent and oil reservoir exploitation method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475794A (en) * | 2009-01-12 | 2009-07-08 | 中国石化集团西北石油局 | High temperature resistant and salt resistant chemical water blockoff agent and production method thereof |
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2012
- 2012-09-18 CN CN201210347847.8A patent/CN103666418B/en active Active
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| Publication number | Publication date |
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| CN103666418A (en) | 2014-03-26 |
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| C14 | Grant of patent or utility model | ||
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