Structural Pattern and Its Control on Hydrocarbon Accumulations in Wushi Sag, Kuche Depression, Tarim Basin

详细信息   

• 责任者：Zheng Min （Lanzhou Oil and Gas Resources Center ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Lanzhou 730000 ; China） ; Peng Gengxin
• 刊名：Petroleum Exploration and Development
• 出版年：2008
• 卷期：35(4)
• 关键词：构造样式 ; tectonic style ; 含油气系统 ; petroleum system ; 库车坳陷 ; Kuche Depression
• 页码：p.444-451
• 图表：5 illus., 32 refs.
• 分类号：1003
• issnNo：ISSN1000-0747
• isbnNo：CN11-2360/TE

摘要

Affected by the South Tianshan orogenesis, the faulted structure patterns in the Wushi Sag are very complex. Aimed to find out the basic characteristics of the structures, this paper studies many seismic profile sections, the regional geology, the structural patterns and the formative stage of the structures. The Wushi Sag has three main fault patterns(face to face thrust, back to back thrust, sphenoid thrust),and many local fault structural patterns (fault-bend fold, fault-propagation fold, duplex structure, outburst structure, growth structure, etc). There mainly develops four groups of reverse faults (NE, NEE, NW, EW) and one group of NNW trending strike-slip faults. According to the structural background, seismic profiles and balanced cross sections, the main fault in the studied area experienced at least five evolving stages which are pre-Mesozoic, Late Permian-Early Tertiary, Jurassic, Late Jurassic-early Cretaceous, and Late Neogene.