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目前,研究抑制化学驱油过程中表面活性剂损失的主要途径有:改进表面活性剂的分子结构;进行多种表面活性剂的复配;选择适宜的顶替表面活性剂损失的牺牲剂。一、表面活性剂的分子结构对粘土矿物表面吸附性能的影响表面活性剂的吸附与其化学势有关,而化学势又与表面活性剂的分子结构有关。单一表面活性剂分子,如烷基苯磺酸钠,每一个甲基引起的表面活性剂分子的化学势变化,是由水溶液向高岭土表面的跃迁,d(△(?))/d(CH_2)=-0.99kcal/mol;由水溶液
At present, the main ways of inhibiting the surfactant loss during chemical flooding are as follows: improving the molecular structure of the surfactant; compounding a plurality of surfactants; and selecting a suitable sacrificial agent for replacing the surfactant loss. First, the molecular structure of surfactants on the adsorption properties of clay minerals Surfactant adsorption and its chemical potential, and chemical potential and the surfactant molecular structure. A single surfactant molecule, such as sodium alkylbenzenesulfonate, changes in the chemical potential of the surfactant molecule due to each methyl group from the aqueous solution to the surface of the kaolin, d (Δ (?)) / D (CH 2) = -0.99 kcal / mol; from aqueous solution