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作 者:周新桂 杜治利 ZHOU Xingui;DU Zhili(Oil&Gas Survey,China Geological Suvey,Beijing 100083,China)
机构地区:[1]中国地质调查局油气资源调查中心
出 处:《中国地质调查》2019年第4期1-10,共10页Geological Survey of China
基 金:中国地质调查局“天山—兴蒙构造带油气基础地质调查工程(编号:0211)”项目资助
摘 要:“天山—兴蒙构造带油气基础地质调查工程”全力支撑北方新区新层系油气调查科技攻坚战,按北方石炭系—二叠系、大型盆地深层和山前构造带3个层次开展工作部署。主攻北方石炭系—二叠系,查明西北地区石炭系—二叠系沉积充填序列,恢复岩相古地理,建立油气成藏模式,优选战略突破目标,支撑并实现银额盆地居延海坳陷、准噶尔盆地南部博格达山前和柴达木盆地东部3个重要油气突破;重点评价塔里木盆地深层震旦系—下奥陶统成藏条件,通过开展塔里木盆地深部调查,查明了震旦系—下奥陶统盆地结构和展布,落实了生、储、盖的平面分布特征,预测了深部油气成藏模式;积极准备在山前构造带开展工作,初步查明塔里木盆地西北缘构造格架和寒武系盐下成藏条件,在塔里木盆地温宿凸起实现了新区新层系油气重大突破,初步评价了柯坪断隆的油气资源潜力。工程取得的研究成果为推动自然资源部(原国土资源部)在新疆开展油气矿权管理体质改革起到了强有力的支撑作用。“Tianshan-Xingmeng structural belt oil and gas foundation geological survey project”fully supported the scientific and technological battle of oil and gas investigation in the new strata and new area of Northern China.Deployment was carried out at three levels:the Northern Carboniferous-Permian,deep basin,and piedmont belt.Focusing on Northern Carboniferous-Permian,the authors identified the Carboniferous-Permian sedimentary sequence,restored the lithofacies palaeogeography and established the hydrocarbon accumulation models.And the strategic breakthrough targets were optimized to support the three important oil and gas breakthroughs in Juyanhai Depression,the front of Bogda Mountain in Southern Junggar Basin and Eastern Qaidam Basin.Reservoir conditions of deep Sinian-Lower Ordovician in Tarim Basin were evaluated,and then the structure and distribution of Sinian-Lower Ordovician basins have been ascertained.Also the planar distribution of source-reservoir-cap has been implemented,and the deep hydrocarbon accumulation model has been predicted.The authors positively prepared the exploration in the piedmont belt,and found out the tectonic framework of the northwestern margin of Tarim Basin and the conditions for the formation of Cambrian subsalt reservoirs preliminarily.A major breakthrough in oil and gas of new strata in new area has been achieved in Wensu uplift of Tarim Basin,and the oil and gas resources potential of Keping fault uplift has been preliminarily evaluated.These progresses have strongly supported the oil and gas reform of mining rights by original Ministry of Land and Resources in Xinjiang Province.
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