粘弹性表面活性剂胶束酸在砂岩储层分流酸化中的应用  

Sandstone diversion acidization technology of viscoelastic surfactant micelle fluid

作　　者：郑云川[1] 赵立强[2] 刘平礼[2] 杜志敏[2] 

机构地区：[1]四川石油管理局井下作业公司,四川成都610051 [2]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500

出　　处：《石油学报》2006年第6期93-95,99,共4页Acta Petrolei Sinica

基　　金：国家自然科学基金项目(No.50474039)资助

摘　　要：粘弹性表面活性剂(VES)技术已在碳酸盐岩油气藏压裂、酸化中得到成功的应用,同样VES技术可应用于砂岩酸化。实验合成出新型粘弹性表面活性剂———芥子酰胺丙基甜菜碱(SAP-BET),由于SAP-BET为具有很长疏水碳链的两性粘弹性表面活性剂,所以用其配制的胶束流体具有良好的粘弹性行为,可用其配制具有自主分流、控滤失等特性的酸液或清洁压裂液。根据粘性表皮系数,建立了砂岩VES胶束流体分流酸化技术。该酸化工艺适合高温非均质多层砂岩油藏分流酸化。Viscoelastic surfactants （VES） technology has been widely utilized in fracturing and acid treatment of carbonate reservoir and acid treatment of sandstone. A new viscoelastic surfactant（sinapic amido propyl betaine, SAP-BET） was synthesized. The SAPBET belongs to amphoteric viscoelastic surfactant with a long water-repellent carbon chain, so the formulation fluid of SAP-BET has favorable viscoelastic behavior. The SAP-BET could be used to develop self-diverting VES acid and non-polymer fracturing fluid. The sandstone diversion acidization technology of VES micelle fluid was developed according to the viscous skin coefficient. This technology is suitable for diversion acidization of high temperature heterogeneous multiple-layer sandstone reservoir.

关 键 词：粘弹性表面活性剂 芥子酰胺丙基甜菜碱 VES胶束流体 分流 砂岩 酸化 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]