Exploration degree of Tarim Basin, however, is not high, so effective sourcerock distribution cannot be precisely defined only by geochemical index of the well sites.
而塔里木盆地勘探程度不高，仅凭井点的地化指标，是不能准确圈定有效烃源岩分布的。
2
The concept of oil source abundance index is presented by combining organic abundance of sourcerock with geological analysis, and applied in Southwest depression of Tarim basin.
Gaseous hydrocarbon generation of gas sourcerock is a key index in evaluating gas sourcerock. It is also an important parameter of basin resource assessment.