CN102206483A - Surfactant/polymer water repellent identification composite oil displacement agent and preparation method thereof - Google Patents
Surfactant/polymer water repellent identification composite oil displacement agent and preparation method thereof Download PDFInfo
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- CN102206483A CN102206483A CN2011100896415A CN201110089641A CN102206483A CN 102206483 A CN102206483 A CN 102206483A CN 2011100896415 A CN2011100896415 A CN 2011100896415A CN 201110089641 A CN201110089641 A CN 201110089641A CN 102206483 A CN102206483 A CN 102206483A
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
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Abstract
The invention relates to a surfactant/polymer water repellent identification composite oil displacement agent for improving the mining rate of crude oil in an oil field and a preparation method of the oil displacement agent. The oil displacement agent can be used for oil displacement in a cooperation way, has water repellent and identification functions and cannot be adsorbed by stratum. In the technical scheme, the composite oil displacement agent comprises the following raw materials and components in percentage by mass: 2.7*10<-4> percent of surfactant which is one of sodium dodecyl benzene sulfonate, cetyltrimethylammonium chloride or nonyl phenol poly ethoxylate polyoxyethylene ether, and 1.2*10<-3> percent of polymer which is prepared by mixing allyl cyclodextrin or maleic anhydride modified cyclodextrin with acrylamide and acrylic acid according to a certain proportion by using grafted cyclodextrin acrylamide, adding chelates, potassium persulfate and sodium hydrosulfite into the mixture, introducing nitrogen for oxygen removal and reacting for 6 to 8 hours. The preparation method comprises the following steps of: preparing solution by using the surfactant and the polymer respectively; mixing according to the volume ratio of 1 to 300; and stirring at the temperature of between 30 and 40 DEG C for 12 to 48 hours to obtain the composite oil displacement agent. The composite oil displacement agent has a good oil displacement effect, can improve the mining rate of the crude oil and can be used as an oil displacement agent in the oil field.
Description
Technical field
The present invention relates to a kind of oil play oil field that is used for and improve the tensio-active agent of crude oil recovery ratio/polymer hydrophobic identification compound oil displacement agent and preparation method.
Technical background
In order to improve the crude oil recovery ratio, often use oil-displacing agent in the oil field, and often use single a kind of oil-displacing agent.Compound oil displacement agent is often referred to two or more combination arbitrarily in the oil-displacing agents such as polymer oil-displacing agent, surfactant flooding agent, alkali oil-displacing agent and biological oil-displacing agent.Though the surfactant flooding agent can be played the synergy that " washing oil ", polymer oil-displacing agent can play " displacement of reservoir oil " in theory, but owing to exist tensio-active agent easily shortcoming such as to be lost by stratum absorption and polymkeric substance viscosity in the stratum, its synergy is not obvious.Therefore, the research of compound oil displacement agent is risen just gradually.
Summary of the invention
The objective of the invention is to: work in coordination with the displacement of reservoir oil in order to make polymkeric substance and tensio-active agent, and have hydrophobic recognition function, do not adsorbed by the stratum, the spy provides a kind of tensio-active agent/polymer hydrophobic identification compound oil displacement agent and preparation method.
In order to achieve the above object, the present invention is by the following technical solutions: tensio-active agent/polymer hydrophobic identification compound oil displacement agent, be to constitute by tensio-active agent and scion grafting cyclodextrin acrylamide polymer, it is characterized in that: compound oil displacement agent mass ratio raw materials used and each component is as follows, wherein mass unit is gram, 2.7 * 10 of surfactant comprise raw material total mass
-4% be with Sodium dodecylbenzene sulfonate or palmityl trimethyl ammonium chloride, or polyoxyethylene nonylphenol ether is a kind of; Polymkeric substance accounts for 1.2 * 10 of raw material total mass
-3%, be with scion grafting cyclodextrin acrylamide, be among 0.01g/L allyl group cyclodextrin or maleic anhydride modified cyclodextrin or the acrylic acid modified cyclodextrin aqueous solution 40-60mL in concentration earlier, adding concentration is that 0.5g/L acrylamide soln 4-8mL and concentration are 0.5g/L acrylic acid solution 2-6mL, and acrylamide, vinylformic acid and allyl group cyclodextrin or maleic anhydride modified cyclodextrin or acrylic acid modified cyclodextrin three mol ratio are 69.2～84.2:30～15:0.8; Adding concentration then successively is that 0.5g/L disodium ethylene diamine tetraacetate inner complex 0.5-2mL and concentration are the Potassium Persulphate oxygenant 0.5-2mL of 0.5g/L and the sodium bisulfite reductive agent 0.3-1mL that concentration is 1.0g/L; Above-mentioned solution being mixed back inflated with nitrogen 20-40min remove oxygen, is 30-50 ℃ of reaction 6-8h down in temperature again; Being neutralized to pH with NaOH solution at last is 6-7, makes the grafted cyclodextrin acrylamide polymer; All the other are water.
Scion grafting cyclodextrin acrylamide polymer structure is as follows:
Wherein the molar percentage of X is 5-8%, and the molar percentage of Y is 2-10%.
Be the cyclodextrin structure unit.
The preparation method of tensio-active agent/polymer hydrophobic identification compound oil displacement agent: elder generation is a kind of with tensio-active agent Sodium dodecylbenzene sulfonate or palmityl trimethyl ammonium chloride or polyoxyethylene nonylphenol ether, adds entry and is made into the solution that concentration is 800mg/L; Again the scion grafting cyclodextrin acrylamide polymer that make is above added water and be made into the solution that concentration is 1200mg/L; Then with surfactant soln and the polymers soln of preparation by volume 1:300 mix, churning time 12～48 hours, whipping temp is 30～40 ℃, makes tensio-active agent/polymer hydrophobic at last and discerns compound oil displacement agent.
The present invention compared with prior art, its beneficial effect is: in a single day scion grafting cyclodextrin acrylamide polymer-tensio-active agent Subjective and Objective oil recovery system enters oil reservoir contact oil-water interface, tensio-active agent (object) is just excited release by the oil reservoir component, performance surfactant flooding effect; When polymkeric substance contacts with oil phase, part surface promoting agent (object) in the polymer body is replaced by the reservoir oil phase component, make the polymkeric substance front end lipophilicity that contacts with oil phase strengthen, and the polymkeric substance back segment is still preserved former hydrophily, the result water and oil at the interface polymkeric substance be straightened and unfold, polymkeric substance interchain frictional force increases, and is big thereby viscosity becomes, and becomes more effective polymer flooding.
Embodiment
The present invention is further described below by embodiment.
The preparation method of scion grafting cyclodextrin acrylamide polymer may further comprise the steps.
Be in 0.01g/mL allyl group cyclodextrin or maleic anhydride modified cyclodextrin or the acrylic acid modified cyclodextrin aqueous solution in 50mL concentration earlier, adding concentration is acrylamide (AM) 6mL of 0.5g/mL and the vinylformic acid 3mL that concentration is 0.5g/mL, and acrylamide, vinylformic acid and allyl group cyclodextrin or maleic anhydride modified cyclodextrin or acrylic acid modified cyclodextrin three mol ratio are followed successively by 69.2～84.2:30～15:0.8; And then to add concentration successively be that 0.5g/mL disodium ethylene diamine tetraacetate sequestrant 1mL, concentration are that Potassium Persulphate oxygenant 1mL and the concentration of 0.5g/mL is 1.0g/mL sodium bisulfite reductive agent 0.5mL; Inflated with nitrogen 20-40min the deoxygenation of mixed evenly back, again at 30-50 ℃ of reaction 6-8h down, with in the NaOH solution and pH be 6-7, get scion grafting cyclodextrin acrylamide polymer;
Embodiment 1.
Getting concentration is the palmityl trimethyl ammonium chloride solution 1mL of 800mg/L and the scion grafting cyclodextrin acrylamide polymer (R that concentration is 1200mg/L
1Be CH
2, R
2Be Na, the molar percentage of X is 5%, and the molar percentage of Y is 8%) the 300mL mixing, stirred 36 hours, whipping temp is 40 ℃.Obtain tensio-active agent/polymer hydrophobic identification compound oil displacement agent.Simulation rock core displacement test result shows that oil recovery factor is 87.2%;
Reference examples 1.
Scion grafting cyclodextrin acrylamide polymer is changed into partially hydrolyzed polyacrylamide, and other conditionally completes are identical, repeat above-mentioned experiment and obtain tensio-active agent/polymkeric substance compound oil displacement agent.Simulation rock core displacement test result shows that oil recovery factor is 48.6%;
Embodiment 2.
Getting concentration is the Sodium dodecylbenzene sulfonate solution 1mL of 800mg/L and the scion grafting cyclodextrin acrylamide polymer (R that concentration is 1200mg/L
1Be CH
2, R
2Be Na, the molar percentage of X is 5%, and the molar percentage of Y is 8%) the 300mL mixing, stirred 36 hours, whipping temp is 40 ℃.Obtain tensio-active agent/polymer hydrophobic identification compound oil displacement agent.Simulation rock core displacement test result shows that oil recovery factor is 92.1%;
Reference examples 2.
Scion grafting cyclodextrin acrylamide polymer is changed into partially hydrolyzed polyacrylamide, and other conditionally completes are identical, repeat above-mentioned experiment and obtain tensio-active agent/polymkeric substance compound oil displacement agent.Simulation rock core displacement test result shows that oil recovery factor is 71.4%;
Embodiment 3.
Getting concentration is the palmityl trimethyl ammonium chloride solution 1mL of 800mg/L and the scion grafting cyclodextrin acrylamide polymer (R that concentration is 1200mg/L
1Be C=O, R
2Be Na, the molar percentage of X is 5%, and the molar percentage of Y is 8%) the 300mL mixing, stirred 36 hours, whipping temp is 40 ℃.Obtain tensio-active agent/polymer hydrophobic identification compound oil displacement agent.Simulation rock core displacement test result shows that oil recovery factor is 78.9%;
Embodiment 4.
Getting concentration is the Sodium dodecylbenzene sulfonate solution 1mL of 800mg/L and the scion grafting cyclodextrin acrylamide polymer (R that concentration is 1200mg/L
1Be C=O, R
2Be Na, the molar percentage of X is 5%, and the molar percentage of Y is 8%) the 300mL mixing, stirred 36 hours, whipping temp is 40 ℃.Obtain tensio-active agent/polymer hydrophobic identification compound oil displacement agent.Simulation rock core displacement test result shows that oil recovery factor is 88.5%.
Claims (2)
1. tensio-active agent/polymer hydrophobic identification compound oil displacement agent is to be made of tensio-active agent and scion grafting cyclodextrin acrylamide polymer, it is characterized in that: compound oil displacement agent mass ratio raw materials used and each component is as follows, wherein mass unit is gram, 2.7 * 10 of surfactant comprise raw material total mass
-4% be with Sodium dodecylbenzene sulfonate or palmityl trimethyl ammonium chloride, or polyoxyethylene nonylphenol ether is a kind of; Polymkeric substance accounts for 1.2 * 10 of raw material total mass
-3%, be with scion grafting cyclodextrin acrylamide, be among 0.01g/L allyl group cyclodextrin or maleic anhydride modified cyclodextrin or the acrylic acid modified cyclodextrin aqueous solution 40-60mL in concentration earlier, adding concentration is that 0.5g/L acrylamide soln 4-8mL and concentration are 0.5g/L acrylic acid solution 2-6mL, and acrylamide, vinylformic acid and allyl group cyclodextrin or maleic anhydride modified cyclodextrin or acrylic acid modified cyclodextrin three mol ratio are 69.2～84.2:30～15:0.8; Adding concentration then successively is that 0.5g/L disodium ethylene diamine tetraacetate inner complex 0.5-2mL and concentration are the Potassium Persulphate oxygenant 0.5-2mL of 0.5g/L and the sodium bisulfite reductive agent 0.3-1mL that concentration is 1.0g/L; Above-mentioned solution being mixed back inflated with nitrogen 20-40min remove oxygen, is 30-50 ℃ of reaction 6-8h down in temperature again; Being neutralized to pH with NaOH solution at last is 6-7, makes the grafted cyclodextrin acrylamide polymer; All the other are water.
2. preparation method as compound oil displacement agent as described in claims 1, it is characterized in that: elder generation is a kind of with tensio-active agent Sodium dodecylbenzene sulfonate or palmityl trimethyl ammonium chloride or polyoxyethylene nonylphenol ether, adds entry and is made into the solution that concentration is 800mg/L; Again the scion grafting cyclodextrin acrylamide polymer that make is above added water and be made into the solution that concentration is 1200mg/L; Then with surfactant soln and the polymers soln of preparation by volume 1:300 mix, churning time 12～48 hours, whipping temp is 30～40 ℃, makes tensio-active agent/polymer hydrophobic at last and discerns compound oil displacement agent.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504109A (en) * | 2011-11-15 | 2012-06-20 | 西南石油大学 | Cyclodextrin supported hydrogel and preparation method thereof |
| CN102660250A (en) * | 2012-04-17 | 2012-09-12 | 西南石油大学 | Cation hydrophobic associating polymer oil displacement agent and preparation method thereof |
| CN103242814A (en) * | 2012-02-08 | 2013-08-14 | 中国石油天然气股份有限公司 | Slow blocking remover for deep part of oil and water well |
| CN103627383A (en) * | 2013-11-12 | 2014-03-12 | 吉林化工学院 | Supermolecular composite retardance acidifying agent for carbonate reservoir and preparation method thereof |
| CN103820094A (en) * | 2013-12-04 | 2014-05-28 | 克拉玛依市正诚有限公司 | Mixed type surface active agent and preparation method thereof |
| CN103937482A (en) * | 2014-04-01 | 2014-07-23 | 西南石油大学 | Zwitterionic copolymer oil-displacing agent and synthesis method thereof |
| CN104762077A (en) * | 2014-12-09 | 2015-07-08 | 西南石油大学 | High-temperature-resistant salt-resistant polymer oil-displacement agent |
| CN104804149A (en) * | 2015-04-16 | 2015-07-29 | 西南石油大学 | Preparation method of AA (acrylic acid)/AM (acrylamide)/AMPS (2-acrylamido-2-methylpropane sulfonic acid)/MAH (maleic anhydride)-beta-CD (cyclodextrin) quaternary oil displacement agent |
| CN104877078A (en) * | 2015-04-16 | 2015-09-02 | 西南石油大学 | Method for preparing AA/AM/MAH-beta-CD ternary oil-displacing agent |
| CN105626012A (en) * | 2014-10-29 | 2016-06-01 | 中国石油化工股份有限公司 | Pressure-reducing injection-increasing agent and pressure-reducing injection-increasing method for water injection oil well |
| CN106833593A (en) * | 2016-12-06 | 2017-06-13 | 西南石油大学 | A kind of preparation method of the aqueous fracturing fluid of superior performance |
| CN107304240A (en) * | 2016-04-19 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of polymeric system for intensity controlled of associating |
| CN108912268A (en) * | 2018-07-17 | 2018-11-30 | 中国石油集团渤海钻探工程有限公司 | A kind of hydrophobic coating film of electric attraction, proppant and preparation method thereof |
| CN109607633A (en) * | 2018-12-27 | 2019-04-12 | 长江大学 | A kind of technique removing neopelex in aqueous solution containing HPAM |
| CN111808594A (en) * | 2020-07-10 | 2020-10-23 | 中国石油大学(华东) | High-molecular polymer oil-displacing surfactant for oil field and preparation method thereof |
| CN114602434A (en) * | 2022-03-08 | 2022-06-10 | 中国地质大学（武汉） | Cyclodextrin-based adsorption material and preparation method and application thereof |
| CN115057966A (en) * | 2022-07-29 | 2022-09-16 | 山东诺尔生物科技有限公司 | Polyacrylamide oil displacement agent and preparation method thereof |
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Patent Citations (2)
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| US4316809A (en) * | 1979-11-13 | 1982-02-23 | Standard Oil Company (Indiana) | Micellar fluid for low and high hardness crude oil displacement |
| CN101818051A (en) * | 2010-03-19 | 2010-09-01 | 西南石油大学 | AM (Acrylamide)/DMDAAC (Dimethyl Diallyl Ammonium Chloride)/cyclodextrin polymer filtrate reducer and preparation method thereof |
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| CN102504109A (en) * | 2011-11-15 | 2012-06-20 | 西南石油大学 | Cyclodextrin supported hydrogel and preparation method thereof |
| CN103242814A (en) * | 2012-02-08 | 2013-08-14 | 中国石油天然气股份有限公司 | Slow blocking remover for deep part of oil and water well |
| CN103242814B (en) * | 2012-02-08 | 2015-05-27 | 中国石油天然气股份有限公司 | Slow blocking remover for deep part of oil and water well |
| CN102660250A (en) * | 2012-04-17 | 2012-09-12 | 西南石油大学 | Cation hydrophobic associating polymer oil displacement agent and preparation method thereof |
| CN102660250B (en) * | 2012-04-17 | 2014-10-15 | 西南石油大学 | Cation hydrophobic associating polymer oil displacement agent and preparation method thereof |
| CN103627383A (en) * | 2013-11-12 | 2014-03-12 | 吉林化工学院 | Supermolecular composite retardance acidifying agent for carbonate reservoir and preparation method thereof |
| CN103820094B (en) * | 2013-12-04 | 2016-03-02 | 克拉玛依市正诚有限公司 | Mixed surfactant and preparation method thereof |
| CN103820094A (en) * | 2013-12-04 | 2014-05-28 | 克拉玛依市正诚有限公司 | Mixed type surface active agent and preparation method thereof |
| CN103937482A (en) * | 2014-04-01 | 2014-07-23 | 西南石油大学 | Zwitterionic copolymer oil-displacing agent and synthesis method thereof |
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| CN106833593B (en) * | 2016-12-06 | 2019-02-22 | 西南石油大学 | A kind of preparation method of aqueous fracturing fluid |
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| CN111808594A (en) * | 2020-07-10 | 2020-10-23 | 中国石油大学(华东) | High-molecular polymer oil-displacing surfactant for oil field and preparation method thereof |
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| CN114602434A (en) * | 2022-03-08 | 2022-06-10 | 中国地质大学（武汉） | Cyclodextrin-based adsorption material and preparation method and application thereof |
| CN114602434B (en) * | 2022-03-08 | 2023-03-28 | 中国地质大学（武汉） | Cyclodextrin-based adsorption material and preparation method and application thereof |
| CN115057966A (en) * | 2022-07-29 | 2022-09-16 | 山东诺尔生物科技有限公司 | Polyacrylamide oil displacement agent and preparation method thereof |
| CN115057966B (en) * | 2022-07-29 | 2024-04-09 | 山东诺尔生物科技有限公司 | Polyacrylamide oil displacement agent and preparation method thereof |
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