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CN102876357A 油田采出液的破乳脱水方法 有权

油田采出液的破乳脱水方法
摘要：
一种油田采出液的破乳脱水方法，包括：将油田采出液、破乳助剂和破乳剂混合，进行破乳脱水；所述的油田采出液中含有乳化降粘剂；以油田采出液的质量为基准，破乳助剂的用量为10-200ppm；所述的破乳助剂为具有通式[R1P+(R2)3]nXn-的化合物，其中R1为C6-C22的烷基或烷氧基；R2为C1-C4的烷基、羟烷基、苯基、苄基或甲苯基；n为1-3的整数，n＝1时，X为Cl-、Br-或HCOO-，n＝2时，X为SO42-，n＝3时，X为PO43-。
摘要（英）：

A demulsifying dehydration method of an oilfield produced fluid comprises a step that the demulsifying dehydration is carried out through mixing the oilfield produced fluid, a demulsifying assistant and a demulsifying agent. The oilfield produced fluid contains an emulsified viscosity reducer; the application amount of the demulsifying assistant is 10-200ppm on the basis of the quality of the oilfield produced fluid; and the demulsifying assistant has a structure represented by a general formula of [R1P<+>(R2)3]nX, R1 is a C6-22 alkyl or alkoxy group, R2 is a C1-4 alkyl, hydroxyalkyl, phenyl, benzyl or tolyl group, n is an integer between 1 and 3, X is Cl<->, Br<-> or HCOO<-> when n is 1, X is SO4<2-> when n is 2, and X is PO4<3-> when n is 3.

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