涠洲11-1-A1井酸化实验分析

Analysis of acidizing experiments in Weizhou 11-1-A1 well

黄雷 冯虎 彭雪飞 尚希涛

Huang Lei Feng Hu Peng Xuefei Shang Xitao

中海油服油田生产事业部, 天津塘沽 300451; 中国石油大学, 北京昌平 102249

Oil Field Service Co. Ltd. of CNOOC, Tianjin 300451; China University of Petroleum, Beijing 102249

根据对涠洲11-1-A1井的油层物性、储层特征及敏感性分析,采用醇基酸作为酸化施工主处理液,这样既减少了对开发层位的损害,又保证了处理液对地层有适宜的、较高的溶蚀率,对解除钻井液和固井水泥浆造成的污染堵塞具有明显效果。经过酸液类型及浓度的确定、添加剂的筛选、流动模拟及残酸分析等室内试验研究,确定了适用于该井海上酸化的酸液配方。

Based on the reservoir characteristics and sensibility analysis of Weizhou11-1-A1 well, alcohol-base acid is used in accordance with the practical condition of pay zone in the offshore oilfield. The com-pound acid has less damage and better suitable dissolving capacity to formation. It has remarkable effects on plug removing induced by drilling fluid and cement liquid. The alcohol-base acid for Weizhou11-1-A1 well is developed after experiment of selecting the type, concentration of acid and additives and analyzing reacted acid.