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羌塘盆地跨越了青海省南部和西藏北部,目前在盆地中南部上侏罗统上部的砂、泥岩层中,发现了规模极为可观的含沥青层,有人认为这与区域性的良好盖层有关,也同众多的构造圈闭有关,是寻找大型油气田的有利区域。 对羌塘盆地油气生、储、盖特征与分布的全面分析,已经取得了多方面的新认识,归纳起来有以下几点:这里的生油坳陷发育,生油层系多;这里的储集层包括了多种岩性,既有碎屑岩,也有碳酸盐岩;这里的区域性盖层涉及层位多,面积大,厚度可观;这里的圈
The Qiangtang basin spans over southern Qinghai Province and northern Tibet. At present, a very large scale of bitumen-bearing beds have been found in the upper Upper Jurassic sand and mudstone formations in the central South of the basin, which some believe associated with good regional caprock , But also related to a large number of structural traps, is to find a favorable area for large oil and gas fields. The comprehensive analysis of the characteristics, distribution and distribution of oil and gas in the Qiangtang Basin has made new acquaintance in many aspects. The following points are summed up: There are many oil depressions in the Qiangtang Basin, The layers include a variety of lithologies, both clastic rocks and carbonate rocks; the regional caprocks here are multilayered, large in area and substantial in thickness; the rings here