摘要
川中大安寨油层属于碳酸岩裂缝性油藏 ,大多数井都需要通过酸化才能投产。受到井口条件的限制 ,以前的酸化工艺一直停留在小酸量、低排量的解堵酸化水平上。通过降阻酸工艺的应用 ,有效降低了施工泵注摩阻 ,提高了施工排量 ,形成了一套高泵压、大排量、分层挤酸的酸化新工艺体系。在大安寨油层获得了可喜效果。
Daanzhai reservoir in the middle of Sichuan is a carbonate fractured reservoir in which most wells need to be acidized before putting into production.But because of the restriction of wellhead conditions,the acidization method before was only on the level of little amount of acids and low pump rate.Using friction-reducing acids in a new acidization system,the pumping frictional resistance was effectivly reduced,pumping rate was enhanced,and acidization can be operated separatly with high pumping pressure.This method was successfully used in Daanzhai reservoir.
出处
《钻采工艺》
CAS
2002年第6期89-90,93,共3页
Drilling & Production Technology
