摘要
二连断陷盆地下白垩统,储层物性差,常表现为中低孔低渗储层特性,常规试油一般为低产或干层。近几年来,针对断陷盆地洼槽区陡坡、缓坡沉积砂体地质特点和以往压裂低效的技术难点,开展了压裂配套技术联合攻关,逐步完善形成了针对性强的"软、硬"低渗地层压裂配套技术。实施压裂50余井次,压裂成功率100%,有效率90%,平均日增油20 t以上,获得了明显的经济效益。
In Cretaceous system in Er-Lian fault basin,the reservoir has poor physical property such as less permeable medium -low pore with low productivity.Over recent years,aiming at geological characteristics of fault basin and poorly efficient fracturing,associated fracturing technology was studied and gradually developed for low permeability formation.So far,such technology has been deployed for over 50 wells/times,with a result of 100 percent of success rate,90 percent of efficiency ratio and no less than 20t of average incremental oil production per day.Remarkable economic benefits have been obtained.
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2009年第S2期99-103,共5页
Oil Drilling & Production Technology
关键词
二连盆地
低渗储层
压裂设计优化
压裂工艺
Erlian basin
low-permeability reservoir
fracturing design optimization
fracturing technology
