费尔干纳盆地形成演化及其对油气成藏的控制作用.docx

第37卷 第1期 2016年2月Vol.37,No.1 Feb.2016新 疆 石 第37卷 第1期 2016年2月 Vol.37,No.1 Feb.2016 XINJIANG PETROLEUM GEOLOGY 文章编号：1001-3873(2016)01-0120-05 DOI:10.7657/XJP费尔干纳盆地形成演化及其对油气成藏的控制作用 刘 阵，王 鹏，张洪美，梁全胜，仓 辉，刘 瑛 (陕西延长石油(集团)有限责任公司研究院，西安710075) 摘 要：通过对费尔干纳盆地钻井、取心和地球物理资料的综合分析，结合区域地质认识，研究了天山造山带的活动 与费尔干纳盆地形成演化之间的关系，阐述了盆地形成演化对油气成藏的控制作用，并探讨了影响盆地形成演化的 地球动力学背景。研究认为，费尔干纳盆地的形成演化与天山造山带和帕米尔地块的活动密切相关，盆地东北缘的 塔拉斯一费尔干纳断裂对盆地的形成演化与沉积展布有重要的制约作用；盆地经历了晚二叠世一早三叠世山间拗陷 阶段、晚三叠世构造抬升阶段、早侏罗世一中侏罗世盆地雏形形成阶段、晚侏罗世一早白垩世构造抬升阶段、晚白垩 世—古近纪持续沉降阶段和新近纪一第四纪构造抬升阶段；费尔干纳盆地生油层、储集层和盖层形成于构造平静期， 油气运移和成藏于构造活跃期。 关键词：费尔干纳盆地；构造运动；南天山；油气成藏；帕米尔地块；塔拉斯一费尔干纳断裂 中图分类号：TE111.1 文献标识码：A Formation and Evolution of Fergana Basin and Its Controlling Effect on Hydrocarbon Accumulation LIU Zhen, WANG Peng, ZHANG Hongmei, LIANG Quansheng, CANG Hui, LIU Ying (Research Institute of Shaanxi Yanchang Petroleum (Group) Co.,LTD, Xian, Shaanxi 710075, China) Abstract:This paper analyzed the drilling, coring and geophysical data from Fergana basin, studied the relationship between Tianshan oro- genic belt activities and Fergana basin formation and evolution, combined with the previous regional geology recognitions, illustrated the controlling effect of its formation and evolution on hydrocarbon accumulation, and discussed the geodynamic setting influencing this basins formation and evolution. It is recognized that the formation and evolution of Fergana basin are closely related to Tianshan orogenic belt and Pamir massif activity, the Talas-Fergana fault in northeastern margin of Fergana basin has an important restrictive function on formation, evolution and sedimentary distribution of the basin; this basin experiences six stages in evolution: the intermountain depression (P2-Ti), the tectonic uplift (P), the prototype basin formation (J-J), the tectonic uplift (J3-K;), the continuous subsidence (Kz-E), and the tectonic up- lift (N-Q); the source, reservoir and cap rocks are formed in the tectonic quiet period, and