Monosulfonate and betaine binary compound system as well as preparation method and application thereof

• Main Authors: CAO XIAOPENG, ZHANG SHUDONG, TANG ZHANHONG, JI YANFENG, YUAN FUQING, MA BAODONG, DING YUJUAN, ZHOU MIN, XING XIAOXUAN, ZHANG WEN
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2023
• Subjects: ADHESIVES; CHEMISTRY; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES

The invention relates to the technical field of oilfield development, in particular to a monosulfonate and betaine binary compound system as well as a preparation method and application thereof. The compound system is prepared from the following components in percentage by weight: 0.01%-0.3% of a monosulfonate composition, 0.05%-0.3% of betaine and the balance of mineralized water. According to the compound system, the oil-water interfacial tension can be reduced to an ultralow numerical value (lt); 1 * 10 <-3 > mN/m), and has good oil reservoir applicability. 本发明涉及油田开发技术领域，具体涉及一种单磺酸盐和甜菜碱二元复配体系及其制备方法和应用。所述复配体系由以下组分组成：单磺酸盐组合物0.01％～0.3％，甜菜碱0.05～0.3％，余量为矿化水。本发明所述复配体系可使油水界面张力降至超低数值(<1×10-3mN/m)，且具有良好的油藏适用性。