Petroleum geochemistry of Lower Indus Basin, Pakistan: I. Geochemical interpretation and origin of crude oils

被引：27

作者：

Nazir, Arif ^{[1
]}

Fazeelat, Tahira ^{[2
]}

机构：

[1] Univ Lahore, Dept Technol, Lahore 54600, Pakistan

[2] Univ Engn & Technol, Dept Chem, Lahore 54890, Pakistan

来源：

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING | 2014年 / 122卷

关键词：

cretaceous; biomarker parameters; terrigenous; marine; organic matter; oleanane; lower Indus Basin; DEPOSITIONAL ENVIRONMENT; SOURCE ROCKS; HYDROCARBONS; TOARCIAN; STEROLS; SEA;

D O I：

10.1016/j.petrol.2014.07.008

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The study focused on the petroleum geochemistry of crude oils produced from Cretaceous reservoirs. Geochemical portrayal of crude oils has been carried out by means of diagnostic biomarker parameters like relative distribution of steranes (C-27-C-28-C-29 alpha alpha alpha-20R steranes), C-19 and C-23 tricyclic terpanes (TT), C-24 tetracyclic terpanes (TeT) and hopanes. These parameters suggest that the crude oils contain terrigenous organic matter (OM) mixed with small input of marine OM. The OM of the source rocks was deposited in oxic depositional environment. Maturity parameters, C-32 22S/(22S+22R) homohopanes and sterane isomerization ratios [20S/(20S+20R), alpha beta beta/(alpha beta beta+alpha alpha alpha) for C-29 steranes] indicate that these crude oil are produced from the source rocks at early mature stage to mature stage. (C) 2014 Published by Elsevier B.V.

引用

页码：173 / 179

页数：7

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