Oil Sources in Multi directions and Accumulation Analysis in Guantao Formation of Gudao Oilfield in Zhanhua Sag
Received date: 2010-09-21
Revised date: 2011-05-02
Online published: 2011-06-10
There are abundant hydrocarbon resources in the Guantao Formation of Gudao oilfield in the Zhanhua sag.Biomarkers of the oils from this area suggest oil\|to\|source correlation.The oils are generally “mixed oils”,mainly from the source rocks of the upper Es4 of Bonan sag and the others from the lower Es3 of Bonan,Gubei sag and Gunan sag.Oils generated from the upper Es4 of Bonan sag are distributed every block of Gudao oilfield,and those from the other three sags are in the designated ranges according to the variation regularity of biomarker parameter.The oils of the Guantao Formation have been infused twice at least,and the late accumulation is the most important,from which the petroleum reserves mainly originate.
Key words: Biomarker; Oil source; Hydrocarbon accumulation; Gudao oilfield; Zhanhua sag.
WANG Zhong . Oil Sources in Multi directions and Accumulation Analysis in Guantao Formation of Gudao Oilfield in Zhanhua Sag[J]. Natural Gas Geoscience, 2011 , 22(3) : 399 -406 . DOI: 10.11764/j.issn.1672-1926.2011.03.399
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