氨基聚醇是多元醇及聚合多元醇、聚合醇胺等多种有机物的液体混合物。主要作用机理为:聚合多元醇在溶液中部分解离形成的铵基阳离子,通过静电作用中和黏土表面负电荷,降低黏土水化斥力;同时聚胺与黏土晶层表面形成氢键强化吸附,静电引力和氢键二者共同作用将黏土片层束缚在一起,并排挤出部分层间吸附水,减弱黏土水化;SDA 吸附在黏土表面之后,增强黏土表面疏水性,阻止水分子的进入,进一步抑制黏土水化膨胀。因此,氨基聚醇表现出优异的抑制性能。该产品荧光级别低,不影响地质录井。
Amino polyols are liquid mixtures of polyols, polyols, polyamines and other organic compounds. The main mechanism of the reaction is as follows: the ammonium-based cations formed by the partial dissociation of polyols in solution can neutralize the negative charge on the clay surface by electrostatic action and reduce the repulsion of hydration of the clay; The adsorption of SDA on the clay surface enhances the hydrophobicity of the clay surface and prevents the entry of water molecules. The adsorption of SDA on the clay surface enhances the hydrophobicity of the clay surface, further inhibiting the hydration expansion of clay. Therefore, Amino polyols exhibit excellent inhibition properties. The product has low fluorescence level and does not affect geological logging.