CN103666418A - Gel profile control agent - Google Patents
Gel profile control agent Download PDFInfo
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- CN103666418A CN103666418A CN201210347847.8A CN201210347847A CN103666418A CN 103666418 A CN103666418 A CN 103666418A CN 201210347847 A CN201210347847 A CN 201210347847A CN 103666418 A CN103666418 A CN 103666418A
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- gel plugging
- plugging agent
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- 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
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- 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
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
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- Sealing Material Composition (AREA)
Abstract
The invention relates to a gel profile control agent which consists of a ferric ion precipitant, a temperature-resistant and salt-resistant polymer, a crosslinking agent, a stabilizer and field water of an oil field. The gel profile control agent is mainly used for blocking water channeling channels of water-flooding oil fields so as to reduce the water yield of the oil field and increase the oil yield of the oil field. The gel profile control agent is suitable for formation water channeling channels of water-flooding oil fields with the degree of mineralization over 10000mg/L, temperature of 95-155 DEG C and the content of ferric ions of 5-100mg/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, for oil field, adjust stifled operation.
Background technology
The present invention is for waterflooding oil field shutoff water breakthrough passage.Oil-bearing stratum flooding exploitation is from well water filling, by water drive, sweeps oil in oil reservoir to oil well.Due to many reasons such as oil reservoir self nonuniformity are stronger, easily between oil and water well, form the direct channelling of water to the water breakthrough passage of oil well, cause displacement of reservoir oil by filling water efficiency low.For solving this, ask, conventionally take " adjusting stifled " measure, to well or oil well, inject the shutoff water breakthrough passages such as cross-linked polymer gel.
Cross-linked polymer gel is the whole gel that water-soluble polymers (being generally polyacrylamide and derivative thereof), Oil Field water and linking agent form.Conventional cross-linked polymer gel requires iron ion content low as far as possible (conventionally requiring ferrous iron content to be less than 2mg/L) in Oil Field water while preparing, because iron ion has very strong Degradation to polymer gel, can make cross-linked polymer gel 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.As the conventional polymer gel of initial viscosity at 12000mPa.s, under 110 ℃, iron ion content 10mg/L condition, within 14 days, reduced viscosity is to not enough 50mPa.s.
The present invention is easily degraded the existing cross-linked polymer gel of solution problem by iron ion.
Summary of the invention
The present invention will provide a kind of gel plugging agent, solve existing gel plugging agent and can not resist iron ion, thereby gel plugging agent easily be degraded and will be lost the problem of original performances such as viscosity by iron ion.
For solving the problems of the technologies described above, gel plugging agent of the present invention is comprised 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, and molecular weight is 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 more than 10000mg/L, iron ion content is between 5～100mg/L.
Compare with existing gel plugging agent, gel plugging agent of the present invention has the following advantages: have stronger anti-iron ion ability, be applicable to Oil Field water iron ion content higher (>2.0mg/L), 95 ℃～155 ℃ of temperature, 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
The required component of gel plugging agent of the present invention is industrial goods, can purchase from market.The nonmetal barrier packaging of liquid ingredient, solid ingredient requires combined package bag to pack with meeting GB9774-2002; 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, has industrial goods to sell on market.
Its production method is: with a suitable volumes open container preparation with agitating function.First in container, add Oil Field water, 0～90 ℃ of water temperature all can, start 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 continuation stirring completes the present invention after 20 minutes and prepare work.
Below in conjunction with productive experiment example and concrete application 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 is than the phenolic resin crosslinking agent 0.2% that is 0.4, precipitation of iron ions agent sodium sulphite 0.2%, stablizer sodium bisulfite 0.2%, Oil Field water 99.2%.By the gel seal of the present invention preparing, in having the steel cylinder of inner polytetrafluoroethyllayer layer, at 110 ℃, maintenance is measured its viscosity in 21 days, and measuring its viscosity is 2.73 * 10
4mPa.s.On-the-spot injection after construction, can significantly 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 is than the phenolic resin crosslinking agent 0.4% that is 0.5, precipitation of iron ions agent sodium sulphite 0.8%, stablizer sodium bisulfite 0.4%, Oil Field water 98.0%.By the gel seal of the present invention preparing, in having the steel cylinder of inner polytetrafluoroethyllayer layer, at 115 ℃, maintenance is measured its viscosity in 14 days, and measuring its viscosity is 1.17 * 10
4mPa.s.On-the-spot injection after construction, can significantly increase well oil output and (inject 2000m
3, well group increases oil more than 3.0 tons).
Embodiment 3
Adopt the high iron content ionized water of autogamy, 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% that is 0.7, precipitation of iron ions agent sodium sulphite 1.0%, and stablizer Resorcinol 1.0%, from water distribution 96.0%.By the gel seal of the present invention preparing, in having the steel cylinder of inner polytetrafluoroethyllayer layer, at 120 ℃, maintenance is measured its viscosity in 21 days, and measuring its viscosity is 2.3 * 10
4mPa.s.
Claims (8)
1. a gel plugging agent, is characterized in that being comprised 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%.
2. gel plugging agent according to claim 1, is characterized in that described precipitation of iron ions agent is sodium phosphate or sodium sulphite.
3. gel plugging agent according to claim 1, is characterized in that described salt-tolerance is acrylamide and 2-acrylamide-2-methylpro panesulfonic acid multipolymer.
4. gel plugging agent according to claim 3, is characterized in that described salt-tolerance is industrial goods dry powder, and molecular weight is more than 2,000 ten thousand.
5. gel plugging agent according to claim 1, is characterized in that described linking agent is water soluble phenol resin.
6. gel plugging agent according to claim 5, is characterized in that described linking agent phenol/formaldehyde mol ratio is between 0.2～0.75.
7. gel plugging agent according to claim 1, is characterized in that described stablizer is sodium bisulfite or Resorcinol.
8. gel plugging agent according to claim 1, it is characterized in that described Oil Field water salinity more than 10000mg/L, iron ion content is between 5～100mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210347847.8A CN103666418B (en) | 2012-09-18 | 2012-09-18 | A kind of 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 | A kind of Gel profile control agent |
Publications (2)
| Publication Number | Publication Date |
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| CN103666418A true CN103666418A (en) | 2014-03-26 |
| CN103666418B CN103666418B (en) | 2016-03-09 |
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| CN201210347847.8A Active CN103666418B (en) | 2012-09-18 | 2012-09-18 | A kind of Gel profile control agent |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105820804A (en) * | 2016-04-11 | 2016-08-03 | 中国石油天然气股份有限公司 | High-salinity-resistant reservoir in-depth fluid diversion chemical agent as well as preparation method and application thereof |
| CN106318359A (en) * | 2015-07-03 | 2017-01-11 | 中国石油化工股份有限公司 | Oil displacement agent system |
| CN109134776A (en) * | 2018-09-06 | 2019-01-04 | 西安石油大学 | A kind of matching while using type salt tolerant rubber plug and preparation method thereof |
| CN109765143A (en) * | 2019-03-01 | 2019-05-17 | 延安中杰高新工贸有限公司 | A kind of evaluation method and device being classified profile control and water plugging effect |
| CN111073625A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Modifying and flooding agent and preparation method thereof |
| CN114437688A (en) * | 2020-11-02 | 2022-05-06 | 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 |
Citations (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 |
-
2012
- 2012-09-18 CN CN201210347847.8A patent/CN103666418B/en active Active
Patent Citations (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 |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106318359A (en) * | 2015-07-03 | 2017-01-11 | 中国石油化工股份有限公司 | Oil displacement agent system |
| 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 |
| CN105820804A (en) * | 2016-04-11 | 2016-08-03 | 中国石油天然气股份有限公司 | High-salinity-resistant reservoir in-depth fluid diversion chemical agent as well as preparation method and application thereof |
| CN105820804B (en) * | 2016-04-11 | 2018-09-04 | 中国石油天然气股份有限公司 | The oil deposit deep part fluid diversion chemical agent and its preparation method of resistance to high salinity and application |
| CN109134776A (en) * | 2018-09-06 | 2019-01-04 | 西安石油大学 | A kind of matching while using type salt tolerant rubber plug and preparation method thereof |
| CN111073625A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Modifying and flooding agent 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 |
| CN109765143A (en) * | 2019-03-01 | 2019-05-17 | 延安中杰高新工贸有限公司 | A kind of evaluation method and device being classified profile control and water plugging effect |
| CN114437688A (en) * | 2020-11-02 | 2022-05-06 | 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 |
| 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 |
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| Publication number | Publication date |
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| CN103666418B (en) | 2016-03-09 |
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