摘要
研制了一种可用于油气储层防漏堵漏的新型高失水酸溶性暂堵剂XA,其最佳组成为碳酸钙(CC)80%~85%、氧化钙(CL)5%~10%、新闻纸(NP)5%~10%和皮革纤维(LF)5%~10%.这种新型暂堵剂在15%盐酸中的酸溶率可达90%以上,用于储层防漏堵漏时,易于酸化解堵,不会伤害油气层.利用DS—2堵漏仪对XA各组分与其堵漏性能的关系进行了系统研究,优化了其组成配方,分析和评价了其作为一种高失水酸溶性暂堵剂的性能,并提供了现场使用方法.
A new acid dissoluble loss circulation material XA is developed.Effects of every components of XA on its plugging properties are studied with DS 2 loss circulation material test apparatus.The formula of XA is optimized,and its optimum formula is 80%~85% calcium carbonate,5%~10% calcium oxide,5~10% newsprint and 5%~10% leather fiber.The solubility of the loss circulation material in carbonic acid with 15% concentration is above 90%.Therefore it can be used for leak protection and loss circulation without formation damage.
出处
《西安石油学院学报》
CAS
1998年第5期40-43,共4页
Journal of Xi'an Petroleum Institute
关键词
井漏
酸溶性暂堵剂
油气层
loss circulation material,oil and gas formation,evaluation