塔里木盆地巴楚隆起烃源岩特征及其油气源研究

作者系统评价了塔里木盆地巴楚隆起5套烃源岩系的有机地球化学特征,从剖面和平面上研究了各层碳酸盐烃源岩和泥质烃源岩的有机相分布特征,进而探讨了巴楚隆起的油气来源。研究表明,该区的主要烃源岩为其深部的高成熟寒武-奥陶系海相碳酸盐烃源岩,其次为海陆混源的石炭系烃源岩;其油气主要来自该区深部的烃源岩,生油贡献明显呈东部大于西部、北部大于南部的特点,同时亦有从西南凹陷侧向运移而来的石炭系原油。 

SOURCE ROCK CHARACTERISTICS AND OIL/GAS SOURCES OF THE BACHU UPLIFT IN THE TARIM BASIN

The author systematically evaluates the or ganic geochemical characteristics of five sets of hydrocarbon source rock series in the Bachu Uplift of the Tarim Basin, studies the distributive features of or ganic facies for the carbonate and argillaceous source rocks of various strata i n plane and section, and discusses the oil/gas sources of the Bachu Uplift. The results show that the major hydrocarbon source rocks of the strdy area are the C ambrian-Ordovician high-mature marine carbonate source rocks in the deep part, while the Carboniferous marine and terrigenous mixed source rocks take second p lace. The oil and gas mainly comes from deep source rocks of the study area. It is clear that the oil-generating contribution of the east is greater than that of the west, and the contribution of the north is greater than that of the south . Meanwhile, there is the Carboniferous crude oil migrated laterally from the Sou thwest Depression.