摘要
大庆油田主力油层聚合物驱油技术已大规模推广应用13 a,在油田后备潜力不足的情况下,开展了大庆油田首个上返二类油层工业化聚合物驱油试验。北一二排西部上返聚合物驱为一套陆相河流-三角洲碎屑岩沉积,由于储层发育的地质因素差异使得二类油层适合的聚合物驱油相对分子质量有别于主力油层。通过渗透率、孔喉半径、控制程度与聚合物相对分子质量关系研究,认为二类油层适合中分子聚合物驱油。
Polymer flooding technology has been widely applied in major reservoirs of Daqing Oilfield for 13 years.In the case of potential insufficiency,the first industrialized upward-return polymer flooding for Class II reservoirs is performed.Upward-return polymer flooding area in the west of second array of Bei I block is a set of continental fluvial and delta clastic deposition.Because of geologic differences of reservoirs,molecular weight in polymer flooding for Class II reservoirs is different from major reservoirs.By studying on permeability,pore throat radius,control degree and their relations to relative molecular weight of polymer,this paper proposes that medium molecular weight polymer flooding is suitable for Class II resercoirs.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2006年第6期91-92,114,共3页
Petroleum Geology & Oilfield Development in Daqing
