暂堵酸化技术及应用  

Diverting and Acidizing Technique and Its Application

作　　者：王新[1] 刘云柱 宋家泽[1] 潘朝军[1] 

机构地区：[1]河南石油勘探局,河南桐柏474780

出　　处：《河南石油》1997年第1期20-22,共3页Henan Petroleum

摘　　要：介绍了暂堵酸化的原理、选井条件及施工要求．现场施工24口井77个层段，有效成功率97．6％，累计增加注水量55．692万m3／d，创效益4817．9万元，平均有效期181d，且部分井继续有效。结论是暂堵酸化为常规酸化工艺的一个改进，对地层没有伤害、适用于多层段、薄夹层、层间物性变化较大以及井下套管变形或井斜过大不能下封隔器进行分层酸化的井。该技术可实现一次施工，达到多层同时被改造的目的。This artic1e introduces the princip1e of diverting and acidizing, well selection and treatment requirements. The effective ratio in 24 wells(77 layers)treated is 97.6%, the accumulated water injection rate 55697O m3 /d. Cost saving is up to 4.8179 million Yuan (RMB), and average effective time 181 days with some still effectivc. As a further improved method based on conventional acidizing, the technique has no damage to the formations. It is applicable to the wells that have multiple zones, thin sublayers and zones with large variance of physical roperties, and the wells that can not be separated by packers.Multilaycrs can be treatcd in only one trip with the technique.

关 键 词：酸化 低渗透储集层 油田 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]