• 责任者：Wang Zhaoming (Tarim Oilfield Company ; PetroChina ; Korla 841000 ; China) ; He Ai’dong
• 刊名：Xinjiang Petroleum Geology
• 出版年：2009
• 卷期：30(2)
• 关键词：油气聚集 ; oil and gas accumulation ; 塔里木盆地 ; Tarim Basin
• 页码：p.153-156
• 图表：2 illus., 8 refs.
• 分类号：1003
• issnNo：ISSN1001-3873
• isbnNo：CN65-1107/TE

The mid-western Tabei uplift in Tarim Basin is in good prospects for petroleum exploration, but has complex petroleum geological features. The regional geologic data analysis indicates that the mid-section of south Tianshan oceanic basin was formed in Late Ordovician-Early Silurian, and Tabei slope was good geological background for oil-gas enrichment in this area. It is indicated from Yingshan Formation source rock samples of Ha-6 Well that the organic carbon content in its dolomitic limestone with thickness of 130 m is higher than 0.5%, showing the Lower Ordovician in this area belongs to commercial source rocks, which could broaden the depth and domain of exploration here. Study shows that the mid-western Tabei uplift is of conditions of complex paleo-karst system, along the unconformity and adjacent pinch-out are favorable areas for large-scale paleo-karst oil-gas reservoirs.