Sequence Stratigraphy Mode and Lithologic Traps Prediction of Napo Formation in South Block of
- 责任者：Tian Jijun (College of Geological Exploration and Engineering ; Xinjiang University ; Urumqi 830046 ; China) ; Jiang Zaixing
- 刊名：Geoscience
- 出版年：2010
- 卷期：24(4)
- 关键词：岩性圈闭 ; lithologic traps ; 层序地层学 ; sequence stratigraphy ; 厄瓜多尔 ; Ecuador
- 页码：p.678-684
- 图表：7 illus., 11 refs.
- 分类号：1003
- issnNo：ISSN1000-8527
- isbnNo：CN11-2035/P
Napo Formation in south block of Oriente Basin can be divided into 5 sequences according to sequence boundaries, such as unconformity and seismic reflective characteristics. Shelf margins systems tracts, marine transgressive and highstand systems tracts can be subdivided by the stacking patterns of stratigraphy, changes of lithology and lithofacies. Shelf margin system tract is characterized by the tidal flat, lacustrine transgressive systems tract is characterized by the wide spread of marine mudstone sedimentation, and highstand systems tract is featured by the subaqueous shoal sandstone. It is identified that tide channel sandstone is the high quality reservoirs in south block, tide channel sandstone, M1 lithologic point out zones, subaqueous shoal sandstone are the favorable lithologic traps. The oil shale of the Napo Formation marine shale can offer platitudinous hydrocarbon.