双子表活剂解除低渗透油藏水锁伤害实验研究

The Research of Waterlock Prevention of Low Permeability Oilfield by Gemini Surfactant

双子表活剂比常规表活剂具有更低的表界面张力,是目前在油田助剂领域应用比较广泛的一种新型表活剂。低渗透油井作业过程中,经常发生作业液渗滤到近井地带,使油气井产液量和油气产量下降,给油气田正常生产带来困扰。胜利油田昌邑分公司CH68区块为一低渗透区块,多口油井作业后受到水锁伤害而造成产量下降。在分析水锁伤害机理后对目的区块进行双子表活剂解除水锁伤害技术评价及现场应用,现场施工效果显著。

Gemini surfactant is a good new surfactant during the process of operation. The question of waters infiltrating into wellbore nearby often happens, which can make the output dropping and bring regular production the trouble. CH 68 of Shengli oilfield is an oil pool of low permeability, the outputs of many oil wells drop after operating. After analyzing the cause of waterlock effect, the method for water locking damage prevention and removal is evaluated and used. The significant result has been achieved.