塔河油田深层碳酸盐岩油藏混气酸压实践  

Practice of aerated acid fracturing for deep carbonate reservoirs in Tahe oilfield

作　　者：刘成[1] 徐君[1] 刘雄飞[2] 时际明[2] 曹丽 

机构地区：[1]吐哈油田公司勘探开发研究院 [2]吐哈石油勘探开发指挥部井下公司 [3]长庆油田公司油气所

出　　处：《油气地质与采收率》2001年第5期76-78,共3页Petroleum Geology and Recovery Efficiency

摘　　要：塔河油田碳酸盐岩储集层具有岩性纯、埋藏深、地温高、裂缝连通性差的特点。酸压改造的关键是制造连通裂缝 ,实施混注氮气工艺 ,有效控制酸液滤失 ,减缓酸岩反应速度 ,增加裂缝的穿透距离。混气酸压的作用机理在于注入氮气的降滤、缓速、助排作用。介绍了混气酸压工艺技术和注气特点 ,结合酸液滤失特性确定出施工各阶段混注氮气程序 ,现场应用效果较好。The carbonate reservoirs in Tahe oilfield have the features of pure lithology, d eep burial depth, high formation temperature, poor connection of the fractures. The key of acid fracturing transformation is to make the connected fractures, to carry out the technique of mixed nitrogen injection, to control the filter loss of acidizing fluid effectively, to slow down the response speed of acidizing ro cks and to lengthen the penetrated distance of the fractures. Operation mechanis m of the aerated acid fracturing lies in reducing the filter loss, retarding and cleanup the role of the injected nitrogen. The aerated acid fracturing technolo gy and nitrogen injection feature are introduced, the program of the mixed nitro gen injection at different operated stages are determined combined with the filt ration property of the acidizing fluid. Excellent effect has been achieved by fi eld application.

关 键 词：塔河油田 碳酸盐岩油气藏 酸化压裂 注氮气 滤失 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]