石油钻采工艺2011，Vol.33Issue(5)：110-112,3.
内衬油管油井洗井液的研究与应用
Study and application of flushing fluid for oil wells with lined tubing
摘要
Abstract
To thermally clear the wax attached in oil wells with conventional lined tubing, different surface active agents, the modified inorganic nano silicon dioxide or alumina or titanium dioxide, a very small amount of fluorocarbon surfactant, and vitamin A are combined to obtain the flushing fluid with strong wetting and foaming performance and strong surface energy, and it can be used at 50 t. The laboratory evaluation and field test prove that the flushing fluid can remove the crude on the rod and tubing, and enhance cleaning ability for wax, resin and asphaltenes. The generated small bubbles can improve the carrying capacity of the flushing fluid, and change the wettability of the inner surface of tubing and the outer surface of rod into neutral wetting, which could extend the clean out period. Field tests on more than SO wells show that the average upgoing load of rod decrease by 10.32% after the clean out operation, and the average oil production recovery period has a reduction of 54.12%, The annual oil rate growth is more than 760 tons. The technique provides a technical support for the use of lined tubing.关键词
内衬油管/洗井液/润湿性/表面能/油井Key words
lined tubing/ flushing fluid/ wettability/ surface energy/ oil well分类
能源科技引用本文复制引用
付亚荣..内衬油管油井洗井液的研究与应用[J].石油钻采工艺,2011,33(5):110-112,3.基金项目
国家发明专利"一种用于内衬油管油井的洗井液"(专利号:201010245937.7). （专利号:201010245937.7）
