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中国中西部地区以塔里木盆地及其演化为典型代表。震旦纪以来,经历了地台发育、持续沉降、拉张翘倾、挤压坳陷及断陷推覆等构造发育阶段,与中国东部一样,表现为拉张与挤压交互出现的手风琴式演化史,突出的差别在于晚喜马拉雅期在西部地区形成强烈的挤压逆掩推覆构造,而东部地区只形成坳陷式的沉积盆地。中亚—蒙古大洋、秦—祁—昆大洋、古特提斯洋、中特提斯洋、印度洋以及印度板块等在不同地质时期的板块活动是中国中西部地区盆地演化发展的动力学因素。根据地震剖面解释成果,可确定出四种断块油气藏类型,均反映后期挤压逆冲特征,尤其是燕山期—喜马拉雅期推覆前锋带断块油气藏,还可区分为拆离型、褶皱型、前冲型和反冲型等四种,且每一种还可再区分出若干种。
The central and western regions of China regard the evolution of the Tarim Basin as a typical representative. Since the Sinian, it experienced tectonic development stages such as platform development, continuous subsidence, extension and tilt, compression depression and fault depression and overthrust. Like the eastern part of China, the performance of the accordion The difference between the evolution and the striking difference lies in that during the late Himalayan period, a strong crust and thrust nappe structure was formed in the western region, whereas only the depression-type sedimentary basin was formed in the eastern region. The activities of the plates in Central Asia-Mongolia Ocean, Qin-Qi-Quintai Ocean, the Gêttesisian Ocean, the Middle Tethys Ocean, the Indian Ocean and the Indian Plate in different geologic periods are the dynamic factors of the evolution and development of basins in central and western China. According to the results of seismic interpretation, four types of fault block reservoirs can be identified, all of which reflect late thrust and thrust characteristics, especially the Yanshanian-Himalayan thrust nappe and fault block reservoirs. They can also be divided into detached type, Fold type, forward type and recoil type, and so on, and each one can also distinguish a number of species.