摘要
应用储层沉积学理论，依据10口井岩心和4079口井测井资料，对松辽盆地三肇凹陷葡萄花油层储层沉积特征进行了系统研究，结果表明：葡萄花油层属于典型的河控浅水三角洲沉积体系，发育的微相类型主要为分流河道砂体，河口坝、远砂坝等微相不发育；密井网沉积微相研究表明葡萄花油层整体为水退→水进的沉积演化序列，中部葡152小层砂体最发育，为葡萄花油层的水退最大期。通过对重点沉积时间单元内单砂体展布特征的研究，认识到葡萄花油层主要储层水下分流河道砂体比原认识更连续，且延伸较远，其多与断层匹配形成断层-岩性油藏，这对深入认识该区油藏类型、油气分布规律具有重要意义。
This paper studies sedimentary characteristics of Putaohua Reservoir in Sanzhao Sag in Songliao Basin systematically with sedimentology theory and on the basis of cores from 10 wells and logging data of 4079 wells. Results indicate that Putaohua Reservoir is fluvial-dominated shallow water delta system. Microfacies types are mainly distributary channel sand body, while mouth bar, distal bar and others are not developed. Study on sedimentary microfacies in dense well patterns indicate that Putaohua Reservoir is the sedimentary evolution series of dereliction→water advancing. A Sand bodies of PI52 in the middle is most developed, being the maximum period of dereliction in Putaohua Reservoir. By studying extension characteristics of single sand body in key sedimentation period unit, it is real- ized that main underwater distributary channel sand bodies in Putaohua Reservoir are more continuous extend further than those realized originally and, and they match with faults more to form the fauh-lithologic reservoir, which has an importance for deep realization of reservoir type and oil and gas distribution rule study of this area.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2009年第1期19-21,共3页
Petroleum Geology & Oilfield Development in Daqing
关键词
三肇凹陷
葡萄花油层
沉积特征
油气分布规律
Sanzhao Sag
Putaohua Reservoir
sedimentary characteristics
oil and gas distribution rule
