低渗透砂岩储层贾敏效应实验评价及解除措施:以塔里木油田巴什托普东河塘组为例

Jamin Effect Evaluation Experiment and Release Measures of Low Permeability Sandstone Reservoir:An Example from Baxtopu Donghetang Formation within Tarim Oilfield

塔里木油田巴什托普井区东河塘组整体属于低渗透砂岩储层,在注水开发的过程中,贾敏效应对油藏的开发影响很大。针对这一情况在实验室条件下进行了贾敏效应评价实验设计和评价标准的设定,实验结果表明研究区域的贾敏效应程度为中-强,鉴于此,依据贾敏效应机理,开展了减轻贾敏效应的方法探讨,实验结果显示,通过往注入水中加入0.01%双子表面活性剂来降低油水界面张力的方法可显著削弱贾敏效应,改善开发环境。

The Baxtopu Donghetang Formation within Tarim Oilfield is low permeability sandstone reservoir.Jamin effect impacts develop ment of the reservoir.In response to this situation,Jamin effect evaluation experiment and evaluation standard are designed in the laboratory.Experimental results show that Jamin effect of the reservoir is middle-strong.According to Jamin effect mechanism,the method to realse Jiamin effect is researched and made an experiment.Experimental results show that the method reducing oil-water interfacial tension by adding ＂0.01% Gemini Surfactants＂ to injected water can graeatly realse Jamin effect and improve the development circumstance.