Sulfonate anionic-nonionic surfactant for oilfield oil driving and preparation method thereof
A surfactant, non-ionic surface technology, applied in chemical instruments and methods, drilling compositions, organic chemistry, etc., can solve problems such as difficulty in industrialization, corrosion of equipment, environmental pollution, etc., to achieve less environmental pollution, reaction Gentle, high-conversion effect
Inactive Publication Date: 2017-12-01
黄叶芳
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Abstract
The invention discloses a sulfonate anion nonionic surfactant used for oil field displacement. The general structural formula is: wherein, the R group is a C12-C18 alkyl; Na+ or K+; the invention also discloses the preparation method of the surfactant, step 1) adding the non-ionic surfactant a and acrylic acid b into the reactor at a molar ratio of 1:1-3, using a strong acidic ion exchange resin as Catalyst, synthesize nonionic surfactant c with double bond in the end group; step 2) react 1 mole of c aqueous solution with 1-2 mole of sulfite or bisulfite, distill off water, and use ethanol for the crude product After extraction with a mixed solvent of water/water, the solvent is removed to obtain the target product. The invention adopts strongly acidic ion exchange resin as catalyst, and the catalyst is easy to separate; adopts sulfite or bisulfite as sulfonating agent, and has the advantages of good safety, mild reaction, low toxicity and little environmental pollution.
Application Domain
Organic chemistryDrilling composition
Technology Topic
SolventDouble bond +11
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