• 责任者：Zhou Xinyuan (Tarim Oilfield Company ; PetroChina ; Korla 841000 ; China) ; Lü Xiuxiang
• 刊名：Acta Petrolei Sinica
• 出版年：2013
• 卷期：34(4)
• 关键词：走滑断层 ; strike-slip faults ; 碳酸盐岩油气藏 ; carbonate reservoir ; 塔里木盆地 ; Tarim Basin
• 页码：p.628-637
• 图表：illus., 42 refs.
• 分类号：1003
• issnNo：ISSN0253-2697
• isbnNo：CN11-2128/TE

     A series of NE strike-slip faults are developed in the northern slope of Tazhong area. Activities of these strike-slip faults gener- ated a great deal of fractures and enlarge reservoir space, form massive dissolved pores and carities by deep thermal fluid from faults, which improves reservoir property significantly and increases development depth of karst reservoirs. Studies on source rock-reservoir re lationship, active stages of faults and trace element distribution of crude oils indicated that strike-slip faults are an important pathway for hydrocarbon migration in the Tazhong area, together with unconformity of the Yingshan Formation, form a Lower Ordovician hydrocar- bon transportation framework that controls hydrocarbon redistribution. The northern slope of the Tazhong area can he divided into twenty structural blocks with extension direction of major strike-slip faults and thrust faults. Each block has a normal differentiation of oil, gas and water. The extent of hydrocarbon enrichment in individual blocks has a certain correlation with distance away from strike- slip faults, smaller distance away from strike-slip faults, better property of reservoirs and higher extent of hydrocarbon enrichment. In addition, different blocks show obviously different characteristics of hydrocarbon enrichment.