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满西地区是塔里木盆地海相油气藏的主要富集区之一,侧向运移是该区油气成藏的一个重要特征。该区油气藏的形成和分布主要受控干古隆起背景、东河砂岩优质输导层的展布以及中一新生代(尤其是晚喜马拉雅期)构造变动等三大因素。古隆起背景的存在是该区油气藏形成和富集的关键。研究表明,哈得逊古隆起及其斜坡上倾部位是满西地区油气聚集成藏的最有利地区,石炭系东河砂岩是油气富集的主要层位,东河砂岩地层圈闭和地层一构造复合型圈闭是油气藏形成的主要类型。认为满西地区大中型油气田的勘探应以哈得逊古隆起及其西斜坡为重点。
The Manchu area is one of the major enrichment areas for marine reservoirs in the Tarim Basin. Lateral migration is an important feature of hydrocarbon accumulation in this area. The formation and distribution of oil and gas reservoirs in this area are mainly controlled by the paleo-paleo-uplift background, the distribution of good-quality conductive layers in Donghe sandstone, and the structural changes of the Mesozoic-Cenozoic (especially late Himalayan). The existence of palaeogeomorphic background is the key to the formation and enrichment of oil and gas in this area. The study shows that the Hudson paleo-uplift and its updip slope are the most favorable areas for oil and gas accumulation and accumulation in Manxi area. Carboniferous Donghe sandstone is the main reservoir for oil and gas accumulation. The stratigraphic traps and stratigraphy of Donghe sandstone The formation of composite trap is the main type of reservoir formation. It is concluded that exploration of large and medium-sized oil and gas fields in Manxi should focus on the Hudson paleo uplift and its west slope.