• 责任者：Xie Daqing (Exploration and Production Research Institute ; Urumqi 830011 ; China) ; Zheng Menglin
• 刊名：Geotectonica et Metallogenia
• 出版年：2013
• 卷期：37(3)
• 关键词：隆起 ; uplifts ; 油气藏形成 ; reservoir formation ; 塔里木盆地 ; Tarim Basin
• 页码：p.398-409
• 图表：6 illus., 32 refs.
• 分类号：1003
• issnNo：ISSN1001-1552
• isbnNo：CN44-1595/P

     The Shaya Uplift is an important oil and gas accumulation unit in the Tarim Basin. There is controversy on the tectonic evolution and factors controlling hydrocarbon accumulation. In this paper, remnant strata distribution of the pre-Carboniferous is identified by the analysis of drilling cores and seismic data. The key tectonic event and uplift evolution are confirmed. The complex oil and gas reservoir distribution and its control factors are discussed. The uplift experienced many tectonic events and formed multiple strata unconformities. There are different tectonic characteristics in different evolution stages. There are a sedimentary Palaeo-high during Cambrian-Ordovician, a tectonic Palaeo-high during Silurian-Cretaceous and a buried Palaeo-high during Cenozoic. The Yakela faulted convex was formed by pre-Silurian tectonic events, and became the sedimentary material source during Silurian. Yingmaili anticline, Halahatang syncline, Akekule anticline, and Caohu syncline are formed in the early Hercynian accompanied by SN, EW, NW, NE-trending faults. A weak stretch and shear tectonism led to the re-activity of the pre-faults in Paleogene and a series of en echelon faults forms in the upper strata along pre-faults. The Eogene tectonism led to the Mesozoic tendency reverse. Buried after Cretaceous, the Shaya Uplift is located in the slope area of the Tarim Cenozoic basin. The Shaya Uplift structure controlled the accumulation and distribution of the oil and gas. Two oil and gas aceumutation zones formed along the Tiergen North-Yaha-Dayouertusi-Yangtake fault belts and Luntai-Yakela-Donghetang-Hongqi fault belts. In the south of the Shaya Uplift, it is a regional hydrocarbon accumulation area. There are deep and shallow oil and gas reservoirs in this area. The deep oil and gas reservoirs formed in the carbonate formations and secondary hydrocarbon reservoirs formed in the clastic rocks. The secondary hydrocarbon reservoirs are generally located above the large oil and gas reservoirs hosted in the carbonate. The oil and gas accumulation is controlled by the faults fractures, folds and unconformities. The dissolution difference of carbonate rocks led to the oil and gas reservoir complexity.