Discovery and Its Petroleum Geological Significance of the Slump Fans in Nenjiang No.2 Member of Maoxing Region
详细信息
- 责任者：Jin Mingyu (Exploration and Development Research Institute of Daqing Oilfield Company Ltd. ; Daqing 163712 ; China)
- 刊名：Petroleum Geology & Oilfield Development in Daqing
- 出版年：2011
- 卷期：30(4)
- 关键词：油气勘探 ; petroleum exploration ; 滑塌构造 ; slump structure ; 松辽平原 ; Songliao Plain
- 页码：p.1-4
- 图表：2 illus., 1 table, 21 refs.
- 分类号：1003
- issnNo：ISSN1000-3754
- isbnNo：CN23-1286/TQ
摘要
With the help of 3D seismic data and drilling geological sections, the slump fan complex is discovered in Nenjiang No. 2 Member of Maoxing region of Songliao Basin. In general, the complex takes the form of spindle with NNE strike for its long axis. Its totally affected area is about 61.5 km2, the maximum thickness is 55 m, the average thickness is 39 m; the maximum sandstone thickness is 7 m, the average thickness is 3.8 m. The complex is made up of 7 mono-bodies which are vertically crossed and superimposed and moreover horizontally mosaicked. In the sections, the fans deposit thick towards the source area while their ends are rather thin, so the thickness possesses skip and ripple characteristics. In horizontal, there are arc-like and wavy morphological characteristics. The palaeo-slope exceeds 0. 006°, the palaeo-water is more than 30 m deep, the slip distance is within 2 ~10 km. The slump turbidite fans are first discovered in Nenjiang Formation and part of them are oil-bearing. Among them, HT6 fan body is located in the structure low and moreover owns commercial oil by oil test, so it is proven that the slump fans have much better exploration potentials in Songliao Basin.