摘要
涠10－3油田流三段Ⅲ油组块状砂岩是至少为两期的潮湿型冲积扇沉积。这套沉积可分为扇根、扇中（包括辫状水道、辫状水道间和碎屑流沉积）、扇端（包括漫流和末梢瓣状水道沉积）。砂体平面上呈扇形，剖面上呈透镜状，由三个主水道形成的舌状体组成，自西至东舌状体加大增厚。油田主要处在储油有利的扇中亚相带，辫状水道沉积是主力油层。最有利的储油区是扇中亚相带内的I类储油区，建议今后尽量围绕两个舌状体布生产井。
Massive sandstones in Unit 3 of L3,Weizhou 10-3 oil field represent two periods of wet alluvial fan deposits that can be divided respectively into 1).proximal fan;2).middle fan,including braided channel, interchannel and debris flow deposits;3).distal fan,consisting of distal braided channel and sheetflood de- posits.These fans show lenticular fan sand bodies composed respectively of three lobates formed by three main braided channels and in which lobate extent and lobate thickness increase gradually from the west to the east of the field. Most areas of the field are situated in the middle fan estimated as a favourable place for oil enrich- ment.The braided channel deposits are major oil producing beds.Type Ⅰ oil-bearing area within the middle fan is evaluated to be a most favourable reservoir in the field.It is suggested that new producing wells be drilled around the two lobates within this area.
出处
《中国海上油气（地质）》
1992年第4期31-36,共6页
China Offshore Oil and Gas(Geology)
