CN107384343B - High-temperature-resistant oil reservoir profile control water shutoff agent - Google Patents
High-temperature-resistant oil reservoir profile control water shutoff agent Download PDFInfo
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- CN107384343B CN107384343B CN201710499417.0A CN201710499417A CN107384343B CN 107384343 B CN107384343 B CN 107384343B CN 201710499417 A CN201710499417 A CN 201710499417A CN 107384343 B CN107384343 B CN 107384343B
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- 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
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
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- 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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- 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
- C09K8/516—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
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Abstract
The invention discloses a profile control water shutoff agent for a high-temperature-resistant oil reservoir, and relates to the technical field of oil reservoir exploitation. The raw materials consist of the following substances in percentage by weight: 0.1-0.5 part of polyacrylamide, 0.5-1 part of phenol, 0.3-0.7 part of formaldehyde, 50-100 parts of superfine clay, 0.5-2 parts of potassium hydroxide, 12-25 parts of water and 5-15 parts of industrial ammonium chloride. The high-temperature-resistant oil reservoir profile control plugging agent has the high-temperature stratum profile control plugging success rate of over 95 percent, and has the advantages of high temperature resistance, high strength, uniform gelling, no hydrolysis, no water diversion, long effective time, low cost, easy popularization and the like.
Description
Technical Field
The invention relates to a profile control water shutoff agent, and belongs to the technical field of oil reservoir exploitation.
Background
In oil exploitation, the development of a novel profile control water shutoff agent is an important means for improving the recovery efficiency and the economic benefit, wherein the action capacity effect, the action time, the adaptability, the cost and the construction feasibility of the profile control water shutoff agent are key points to be considered in the profile control process. With the increase of water drive exploitation strength, each high-strength oil field enters a high water-cut stage, even an ultrahigh water-cut stage.
At present, the profile control water shutoff product for improving the recovery efficiency is mainly obvious in the precipitation yield increasing efficiency of medium and low temperature oil reservoirs (below 80 ℃), the profile control water shutoff technology of high temperature oil reservoirs (above 80 ℃) is immature, the failure rate is very high, and the low temperature profile control product can not meet the requirement of high temperature strata.
The disadvantages of common profile control products are as follows: the urea-formaldehyde resin is easy to hydrolyze at high temperature, and water can not be blocked by high-temperature profile control; the sulfonated melamine formaldehyde resin is subjected to high-temperature water diversion, and high-temperature profile control is easy to form water clusters; the water glass has low strength and short high-temperature resistant effective time; the lignin tannin extract phenolic resin has high production cost and is difficult to popularize; the aluminum and chromium crosslinked polyacrylamide gel 86 is dissolved at high temperature and cannot resist high temperature; the phenolic cross-linked polyacrylamide gel 88 is dissolved at high temperature and cannot resist high temperature; the polyacrylamide swelling particles are insoluble in water and have poor injectability, and deposit near the oil reservoir; the starch PAC formaldehyde resin has low strength and short effective time.
Therefore, the problem to be solved in the field is to provide a profile control plugging agent suitable for high-temperature oil reservoirs.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a high-temperature-resistant oil reservoir profile control water shutoff agent, which has the advantages of high-temperature-resistant oil reservoir profile control water shutoff agent, high-temperature stratum profile control water shutoff success rate of 95%, high temperature resistance, high strength, uniform gelling, no hydrolysis, no water diversion, long effective time, low cost, easy popularization and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a high-temperature-resistant oil reservoir profile control water shutoff agent comprises the following raw materials in parts by weight:
0.1-0.5 part of polyacrylamide
0.5-1 part of phenol
0.3-0.7 part of formaldehyde
50-100 parts of superfine clay
0.5-2 parts of potassium hydroxide
12-25 parts of water
5-15 parts of industrial ammonium chloride.
The preferable raw materials comprise the following substances in percentage by weight:
polyacrylamide 0.3 part
0.75 portion of phenol
0.45 part of formaldehyde
80 portions of superfine clay
1.5 parts of potassium hydroxide
17 portions of water
10 parts of industrial ammonium chloride.
The polyacrylamide was 250 million molecular weight polyacrylamide.
The preparation method of the high-temperature-resistant oil reservoir profile control water shutoff agent comprises the following steps: (1) firstly, adding polyacrylamide into water according to a formula, and stirring for 2 hours to obtain polyacrylamide slurry for later use;
(2) according to the formula, phenol, formaldehyde and potassium hydroxide are subjected to prepolymerization reaction at the temperature of 80 ℃ for 40 minutes, then are cooled to 20 ℃ by circulating water, and superfine clay is slowly added according to the formula while stirring and drying are carried out until fine particles are generated; the particles may be of different sizes;
(3) adding polyacrylamide slurry into the fine particles prepared in the step (2) to uniformly coat a layer of capsules on the surfaces of the particles;
(4) the pH was adjusted to 3.5 with ammonium chloride.
When in use, the pH value is adjusted to 3.5 by ammonium chloride.
The invention is a pre-crosslinking system, phenolic resin can not be formed under low-temperature alkaline condition, phenolic resin gel can be formed only under the action of high-temperature and acidic medium, the prior art can form gel at low temperature, and the gel is not formed at high temperature. The high temperature resistant pre-crosslinking system formula of the high temperature pre-crosslinking system is produced according to the formula, and the capsule preparation and the similar process are carried out.
The high-temperature effective time test data of the profile control water shutoff agent for the high-temperature-resistant oil reservoir are shown in the following table 1:
TABLE 1
The experimental data of the high-temperature-resistant oil reservoir profile control water shutoff agent strength are shown in the following table 2:
TABLE 2
The table shows the compressive strengths of different concentrations, less dosage, low cost and high strength.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the high-temperature-resistant oil reservoir profile control plugging agent has the high-temperature stratum profile control plugging success rate of over 95 percent, and has the advantages of high temperature resistance, high strength, uniform gelling, no hydrolysis, no water diversion, long effective time, low cost, easy popularization and the like.
Detailed Description
Example 1
The high-temperature-resistant oil reservoir profile control water shutoff agent comprises the following raw materials in parts by weight:
polyacrylamide 0.3 part
0.75 portion of phenol
0.45 part of formaldehyde
80 portions of superfine clay
1.5 parts of potassium hydroxide
17 portions of water
10 parts of industrial ammonium chloride.
The polyacrylamide was 250 million molecular weight polyacrylamide.
The preparation method comprises the following steps: (1) firstly, adding polyacrylamide into water according to a formula, and stirring for 2 hours to obtain polyacrylamide slurry for later use;
(2) according to the formula, phenol, formaldehyde and potassium hydroxide are subjected to prepolymerization reaction at the temperature of 80 ℃ for 40 minutes, then are cooled to 20 ℃ by circulating water, and superfine clay is slowly added according to the formula while stirring and drying are carried out until fine particles are generated;
(3) adding polyacrylamide slurry into the fine particles prepared in the step (2) to uniformly coat a layer of capsules on the surfaces of the particles;
(4) when in use, the pH value is adjusted to 3.5 by ammonium chloride.
Example 2
The high-temperature-resistant oil reservoir profile control water shutoff agent comprises the following raw materials in parts by weight:
polyacrylamide 0.1 part
Phenol 1 part
0.6 part of formaldehyde
100 portions of superfine clay
0.5 part of potassium hydroxide
20 portions of water
12 parts of industrial ammonium chloride.
The polyacrylamide was 250 million molecular weight polyacrylamide.
The preparation method is the same as example 1.
Example 3
The high-temperature-resistant oil reservoir profile control water shutoff agent comprises the following raw materials in parts by weight:
polyacrylamide 0.4 part
0.6 part of phenol
0.3 part of formaldehyde
70 portions of superfine clay
1.5 parts of potassium hydroxide
12 portions of water
8 parts of industrial ammonium chloride.
The polyacrylamide was 250 million molecular weight polyacrylamide.
The preparation method is the same as example 1.
Example 4
The high-temperature-resistant oil reservoir profile control water shutoff agent comprises the following raw materials in parts by weight:
polyacrylamide 0.5 part
0.9 part of phenol
0.7 part of formaldehyde
50 portions of superfine clay
1.5 parts of potassium hydroxide
25 portions of water
5 parts of industrial ammonium chloride.
The polyacrylamide was 250 million molecular weight polyacrylamide.
The preparation method is the same as example 1.
Example 5
The high-temperature-resistant oil reservoir profile control water shutoff agent comprises the following raw materials in parts by weight:
polyacrylamide 0.2 part
0.5 part of phenol
0.7 part of formaldehyde
70 portions of superfine clay
1.2 parts of potassium hydroxide
25 portions of water
15 parts of industrial ammonium chloride.
The polyacrylamide was 250 million molecular weight polyacrylamide.
The preparation method is the same as example 1.
Claims (3)
1. The high-temperature-resistant oil reservoir profile control water shutoff agent is characterized in that: the raw materials consist of the following substances in percentage by weight:
0.1-0.5 part of polyacrylamide
0.5-1 part of phenol
0.3-0.7 part of formaldehyde
50-100 parts of superfine clay
0.5-2 parts of potassium hydroxide
12-25 parts of water
5-15 parts of industrial ammonium chloride;
the preparation method comprises the following steps: (1) firstly, adding polyacrylamide into water according to a formula, and stirring for 2 hours to obtain polyacrylamide slurry for later use;
(2) according to the formula, phenol, formaldehyde and potassium hydroxide are subjected to prepolymerization reaction at the temperature of 80 ℃ for 40 minutes, then are cooled to 20 ℃ by circulating water, and superfine clay is slowly added according to the formula while stirring and drying are carried out until fine particles are generated;
(3) adding polyacrylamide slurry into the fine particles prepared in the step (2) to uniformly coat a layer of capsules on the surfaces of the particles;
(4) the pH was adjusted to 3.5 with ammonium chloride.
2. The high temperature resistant oil reservoir profile control water shutoff agent of claim 1, which is characterized in that: the raw materials consist of the following substances in percentage by weight:
0.3 part of polyacrylamide
0.75 portion of phenol
0.45 part of formaldehyde
80 portions of superfine clay
1.5 parts of potassium hydroxide
17 portions of water
10 parts of industrial ammonium chloride;
the preparation method comprises the following steps: (1) firstly, adding polyacrylamide into water according to a formula, and stirring for 2 hours to obtain polyacrylamide slurry for later use;
(2) according to the formula, phenol, formaldehyde and potassium hydroxide are subjected to prepolymerization reaction at the temperature of 80 ℃ for 40 minutes, then are cooled to 20 ℃ by circulating water, and superfine clay is slowly added according to the formula while stirring and drying are carried out until fine particles are generated;
(3) adding polyacrylamide slurry into the fine particles prepared in the step (2) to uniformly coat a layer of capsules on the surfaces of the particles;
(4) the pH was adjusted to 3.5 with ammonium chloride.
3. The high temperature resistant oil reservoir profile control water shutoff agent of claim 1 or 2, which is characterized in that: the polyacrylamide is 250 ten thousand molecular weight polyacrylamide.
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| CN201710499417.0A CN107384343B (en) | 2017-06-27 | 2017-06-27 | High-temperature-resistant oil reservoir profile control water shutoff agent |
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| CN201710499417.0A CN107384343B (en) | 2017-06-27 | 2017-06-27 | High-temperature-resistant oil reservoir profile control water shutoff agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113234425B (en) * | 2021-04-09 | 2023-02-28 | 中国石油大学(华东) | Composite aluminum gel plugging agent for deep profile control of medium-low permeability oil reservoir and preparation method and application thereof |
| CN115074097B (en) * | 2022-06-02 | 2023-08-18 | 重庆科技学院 | Fluid capable of deep profile control of inorganic particle gel, preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4485875A (en) * | 1983-02-28 | 1984-12-04 | Marathon Oil Company | Process for selectively plugging permeable zones in a subterranean formation |
| US4950698A (en) * | 1989-01-03 | 1990-08-21 | Mobil Oil Corporation | Composition for selective placement of polymer gels for profile control in thermal oil recovery |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899291B (en) * | 2009-05-27 | 2012-11-14 | 中国石油天然气股份有限公司 | Annular chemical packer material for water plugging of horizontal well |
| CN102060966A (en) * | 2010-10-29 | 2011-05-18 | 鄯善华油技术服务有限公司 | Synthesis and application in chemical control of HY2008JL high-temperature cross-linking agent |
| CN102305049A (en) * | 2011-08-19 | 2012-01-04 | 克拉玛依新科澳石油天然气技术股份有限公司 | Using method for inorganic particle plugging control agent for oil-water well |
| CN102559159B (en) * | 2011-12-14 | 2013-12-04 | 中国石油天然气股份有限公司 | High-temperature resistant phenolic resin weak gel profile control plugging agent |
| CN102604606B (en) * | 2012-02-16 | 2013-10-16 | 中国石油天然气股份有限公司 | Chemical secondary-crosslinking jelly foam water plugging and profile controlling liquid |
| CN103214639A (en) * | 2013-04-24 | 2013-07-24 | 新疆华油技术服务股份有限公司 | Production method of water-soluble phenolic resin cross-linking agent used for water shut-off and profile control of oil field |
| CN103409120A (en) * | 2013-07-05 | 2013-11-27 | 中国石油天然气股份有限公司 | Polymer nano intercalation composite plugging agent as well as preparation method and application thereof |
| CN103911134B (en) * | 2014-03-31 | 2016-08-17 | 北京恩瑞达科技股份有限公司 | Compound profile-controlling and plugging agent |
| CN104357032A (en) * | 2014-10-13 | 2015-02-18 | 中国石油化工股份有限公司 | High-temperature resistant secondary cross-linked gel profile control agent and preparation method thereof |
| CN104861945A (en) * | 2015-04-23 | 2015-08-26 | 北京市捷博特能源技术有限公司 | High temperature biological gel profile control and water plugging agent and preparation method thereof |
| CN105368424A (en) * | 2015-10-20 | 2016-03-02 | 西南石油大学 | Intercalation delay in-situ polymerization water shutoff gel for high-temperature oil reservoir |
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- 2017-06-27 CN CN201710499417.0A patent/CN107384343B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4485875A (en) * | 1983-02-28 | 1984-12-04 | Marathon Oil Company | Process for selectively plugging permeable zones in a subterranean formation |
| US4950698A (en) * | 1989-01-03 | 1990-08-21 | Mobil Oil Corporation | Composition for selective placement of polymer gels for profile control in thermal oil recovery |
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Effective date of registration: 20200617 Address after: 062550 200 meters west of Yongfeng Road, Renqiu City, Cangzhou City, Hebei Province Applicant after: RENQIU HONGHUAXING CHEMICAL Co.,Ltd. Address before: 062552 North China Petroleum and hydropower plant, Hebei, Cangzhou Applicant before: RENQIU TAIHUA PETROLEUM TECHNOLOGY Co.,Ltd. |
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