两性表面活性剂芥子酰胺丙基甜菜碱的合成与应用  

Synthesis and Application of New Amphoteric Surfactant Sinapic Amido Proyl Betaine on Acidizing

作　　者：郑云川[1] 赵立强[1] 刘平礼[1] 沈建国[2] 

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

出　　处：《钻井液与完井液》2006年第3期4-7,共4页Drilling Fluid & Completion Fluid

基　　金：塔里木油田分公司重点科技攻关项目"轮南潜山储层酸压方案评估与优选"(编号:05004)

摘　　要：针对非均质储层或者特殊性储层(高温、高渗、含H2S、裂缝性)酸化时对酸液的有效置放和克服基于聚合物的酸液体系对地层潜在伤害的问题,研制出了一种能较好解决上述问题的酸液体系,它的主要物质是合成出的一种新型两性表面活性剂———芥子酰胺丙基甜菜碱,简称SAP-BET。SAP-BET属于具有很长疏水碳链的两性粘弹性表面活性剂,用其配制的流体具有良好的粘弹性行为。恰当配方的SAP-BET酸液体系,在高温地层条件下与储层矿物反应后,会形成足够高的粘度,使其具有分流、控制滤失、增加有效作用距离等作用;这种高粘度的流体遇到地层中的碳氢化合物时自动破胶,因此不会对地层造成二次伤害。研究了SAP-BET酸液的粘弹性行为和流变性,以及各种酸液添加剂对其流变性的影响,从研究酸岩反应和酸液变粘机理入手,采用SAP-BET配制出了适用于砂岩酸化的分流酸和适用于碳酸盐岩酸化的清洁变粘酸,介绍了SAP-BET酸液在现场应用中应注意的问题。Direct to the problem of the effective placement of acid in heterogeneity formation and overcome the potential damage of the polymer acid,we developed a new acid system would excellently resolve those problem,the prime efficacy material in which is the new amphoteric surfactant——sinapic amido propyl betaine which be synthesized in this paper,reduced denominate SAP-BET,Because that SAP-BET belong to amphoteric viscoelastic surfactant which own a long water-repellent carbon chain,so the formulation fluid of SAP-BET own a favourable viscoelastic behaviour,the acid system which be produced by the SAP-BET own many excellent property: diverting,leak-off control,enhance the effective length of acid and no damage to formation.The viscoelastic behavior and rheological of SAP-BET and the impact of acid additives on the rheological properties were studied.We have developed a new sandstone diverting acid and carbonate no-polymer variable viscosity acid,by studied the mechanism of acid/rock reaction and the viscosity changing of the acid in the progress of reaction.

关 键 词：酸化 酸液添加剂 两性表面活性剂 合成 粘弹性 流变性 分流酸 清洁变粘酸 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]