卡山地区可溶有机质物性、源性的地化对比

为了研究伊朗盆地卡山地区侏罗系、白垩系和第三系3套烃源可溶有机质的共性与差别,对来自不同井/剖面的12个岩石样品有机质的物性和源性进行了有机地球化学对比,发现本地区源岩具有演化程度高,生烃潜力低的特点,且侏罗系的TOC远高于其他两个层位,3个层系源岩均属于海相沉积,第三系表现出比侏罗系与白垩系更加复杂的沉积特征,包括高等植物输入量的增加;另外研究区外第三系18 B16号样品也显示出更加独特的特征,主峰碳为C31,pr/ph达3 31,受到了强烈氧化作用.

Geochemical contrast of the physical properties and the source characters of the soluble organic matter from the different strata of Kashan area,Iran Basin

The main purpose of this paper is to study the general character and the difference of three sets of soluble organic matter from Jurassic, Cretaceous and Tertiary of Kashan area in Iran Basin. The physical properties and the source characters of the soluble organic matter of 12 rock samples from different wells/profiles are compared and analyzed, and it is found that the source rocks in the area are of the characteristics of high maturity and low hydrocarbon producing potential, and that the TOC of Jurassic is much higher than that of the other two strata. All the source rocks of the three strata belong to marine sediment. The depositional feature of Tertiary seems more complicated than that of Jurassic and Cretaceous, which has more quantity of higher plants. No.18-B16 sample from Tertiary out of the study area presents more unique characteristics. Its main peak carbon is C_(31), pr/ph reaches to 3.31, and it bears strong oxidization.