地层水中主要酸类对储层物性影响因素研究  

EFFECT OF MAJOR ACIDS IN FORMATION WATER ON PHYSICAL PROPERTIES OF RESERVOIR

作　　者：黄福堂[1] 邹信方[1] 张作祥[1] 

机构地区：[1]大庆石油管理局勘探开发研究院

出　　处：《大庆石油地质与开发》1998年第3期7-9,共3页Petroleum Geology & Oilfield Development in Daqing

摘　　要：本文概述了模拟实验方法，研究了不同酸类、浓度和温度对储层物性的影响，以及岩石矿物组分变化特征。实验结果表明，酸溶蚀能力是：乙酸＞草酸＞碳酸＞丙酸；高浓度大于低浓度；高温条件大于低温条件。薄片分析结果说明，地层水中有机酸主要是与长石作用，同时也造成矿物中ＳｉＯ２和Ａｌ３＋迁移。This paper discusses the effect of acid concentration and temperature on the physical properties of reservoir, and the features of different rock mineral components. According to model tests the corrasion ability of acids lists as below: acetic acid > oxalic acid > carbonic acid > propionic acid; high concentrated acid > low concentrated acid; high temperatured acid > low temperatured acid. The organic acid in formation water mainly acts with feldspar, and results in the migration of SiO 2 and Al 3+ in minerals. So we can determine the development of secondary pores according to the components of organic acids and minerals in formation water.

关 键 词：有机酸 储层 次生孔隙 地层水 油气藏 

分 类 号：P618.130.2[天文地球—矿床学]