Hydrocarbon Source Evaluation and Oil Source Contrast of the#br#
Yanchang Formation in Fu-Huang Exploration Area，Ordos Basin

doi:10.11885/j.issn.1674-5086.2015.10.20.01

Abstract

Abstract:

To evaluate the hydrocarbon potential and to establish oil source of oil-bearing series in exploration area，we studied
the hydrocarbon source rock and the crude oil by means of organic petrology and geochemistry. The results show that the
Chang 7 hydrocarbon source rocks are highly abundant in organic matter，and the organic matter is type I II1 of high maturity，
and is good hydrocarbon source rock；the major organic matter type of Chang 6 hydrocarbon source rock is type III II2，
with type I II2 at a minor scale，and is medium-good hydrocarbon source rock with organic matter maturity high maturity；
the Chang4+5 hydrocarbon source rock is of medium high organic matter abundance，mainly with type III，and type II2 at
a minor scale，and is non-poor source rocks organic matter with low-maturity maturity. Crude oil properties of Chang 4+5
and Chang 6 hydrocarbon source rocks are all medium mature oil depositing in continental freshwater lake. Chang4+5，Chang
6 and Chang 7 hydrocarbon source rocks all contribute to the reservoir，among which the Chang 7 hydrocarbon source rocks
contribute the mostand the dark mudstone of Chang4+5 contribute less. The Chang 7 hydrocarbon source rocks found in the
study area expanded the distribution of hydrocarbon source rocks in Ordos Basin，and is of great significance for guiding
thefuther exploration of oilfield.

Key words: Yanchang Formation, hydrocarbon source rock, oil source correlation, Fu-Huang exploration area, Ordos Basin

CLC Number:

TE122

TANG Jianyun1，2*, SHI Zheng3, SONG Hongxia4, ZHANG Lin1，2, CHEN Yubao5. Hydrocarbon Source Evaluation and Oil Source Contrast of the#br# Yanchang Formation in Fu-Huang Exploration Area，Ordos Basin[J]. 西南石油大学学报(自然科学版), 2016, 38(3): 11-20.

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Hydrocarbon Source Evaluation and Oil Source Contrast of the#br# Yanchang Formation in Fu-Huang Exploration Area，Ordos Basin

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