【作者】 时保宏； 赵靖舟； 王清华；

【Author】 SHI Bao-hong;ZHAO Jing-zhou;WANG Qing-hua;School of Oil-Gas Resource,Xi’an University of Petroleum;Department of Geology,Northwest University;Institute of Exploration and Development,Tarim Oil and Gas Branch Company;

【机构】 西安石油大学油气资源学院； 西北大学地质学系； 塔里木油田分公司勘探开发研究院；

【摘要】 目的探讨塔里木盆地东部英吉苏凹陷天然气成藏地质条件和勘探前景。方法运用石油地质综合分析方法。结果通过对英吉苏凹陷的构造背景、油源条件、储盖层条件、聚集和保存条件的分析,认为英吉苏凹陷发育的古生界寒武-奥陶系及中生界侏罗系两套烃源岩具有可观的生油潜力,优越的构造背景和发育的储盖组合为油气聚集和保存创造了良好条件。中生界储盖组合是英吉苏凹陷主要勘探目的层和今后油气勘探的主攻方向,下古生界储盖组合是探索碳酸盐岩大油气田的有利勘探领域。结论英吉苏凹陷具备良好的成藏条件,勘探前景广阔。同时,由于该区寒武—奥陶系处于高成熟-过成熟阶段和侏罗系烃源岩处于未熟—低熟阶段的缺憾,勘探风险较高。更多还原

【Abstract】 Aim To discuss the geologic conditions controlling gas accumulation formation and exploration potential in Yingjisu Sag.Methods The method of comprehensive studying on petroleum geology.Results Through the studying on the all controls of the accumulation formation,Cambrian-Ordovician source rock and Jurassic source rock in Yingjisu Sag have considerable prospect to produce oil and gas.Furthermore,there are feasible tectonic backgrounds and good reservoirs and roof rocks forming good controls for oil ang gas to accumulate.Conclusion There are favorable conditions for accumulation formation and vastitude prospect for oil and gas exploration in Yingjisu Sag.At the same time,because of the disadvantages of source rocks,risks of exploration are high.更多还原