摘要
近年来,以火山岩、泥岩、碳酸盐岩和砂砾岩等特殊岩性为主要储层的油气勘探开发不断取得新突破,特殊岩性储层的增产措施研究变得越来越重要。在分析特殊岩性储层岩心矿物成分的基础上,开展了特殊岩性储层岩心与酸液适应性研究。通过考察盐酸、土酸、磷酸、多氢酸等对查干油田的三种特殊岩性储层岩心(意2井火山岩,力平1井灰岩,锡3-69井白云泥质岩)的酸化适应性发现:盐酸、土酸对于这三种特殊岩性岩心的溶蚀率过高,不适合作这三种特殊岩性储层酸化液,而具有多级电离特性的磷酸和多氢酸酸液对该类岩心的溶蚀率适中,且能有效降低酸岩反应速率,适合作该类储层的酸化液。
In recent years, the oil and gas exploration of particular lithology reservoir such as volcanic, mud, carbonate and glutenite rocks continued to make new breakthroughs. Therefore, the investigation of particular lithology reservoir stimulation treatment becomes increasingly important. Based on the analyzing the mineral composition of particular lithology reservoir cores, the adaptability between particular lithology reservoir cores and acidizing fluid was studied. Hydrochloric acid, mud acid, phosphoric acid and multi-hydrogen acid were used to acidize the particular lithology cores which include Yi-2 well volcanic rocks, LiPing-1 well limestone rocks and Xi-3-69 well dolomite-mud rocks of Chagan Oilfield. The results indicated that the dissolution rates of hydrochloric acid and mud acid to the cores were too high to be suited for the reservoir acidizing, the dissolution rates of phosphoric acid and multi-hydrogen acid to the cores were moderate, and the two acids could decrease the reaction rate between acids and cores, they were suited for the reservoir acidizing.
出处
《钻采工艺》
CAS
北大核心
2013年第1期88-90,13-14,共3页
Drilling & Production Technology
基金
西南石油大学课外开放实验项目"特殊岩性矿物组成与酸化工作液关联性"(KSZ1119)
关键词
特殊岩性
酸化
溶蚀率
酸化液
particular lithology, acidization, dissolution rate, acidizing fluid
