Petroleum Science >2012, Issue 1: 18-24 DOI: https://doi.org/10.1007/s12182-012-0177-x
Oil and gas resource potential of the lowermembers of Eh3 in the lower Tertiary of theBiyang Depression, China Open Access
文章信息
作者：Gang Wenzhe,Wang Qingyu and Luo Jiaqun
作者单位：
College of Geosciences, China University of Petroleum, Beijing 102249, China;Exploration & Development Research Institute, Daqing Oilfield Company, PetroChina, Heilongjiang 163712, China;Research Institute of Petroleum Exploration and Development, Henan Oilfield Company, SINOPEC, Henan 473132, China
投稿时间：2011-07-21
引用方式：Gang, W., Wang, Q. & Luo, J. Pet. Sci. (2012) 9: 18. https://doi.org/10.1007/s12182-012-0177-x
文章摘要
The lower Tertiary Eh3 is divided into two sections: the upper members of Eh3 and the lower
members of Eh3 in the Biyang Depression. The first section is generally regarded as a key target of oil
and gas exploration, but the resource potential of the lower members of Eh3 has been neglected. We
have obtained new knowledge about Eh3 from comprehensive geological research. The lower members
of Eh3 are high-quality and main source rocks, which have good oil and gas resource potential. This is a
new direction for oil and gas exploration. The geochemistry characteristics of source rocks of the lower
members of Eh3 in the lower Tertiary of the Biyang Depression were analyzed in detail. A basin modeling
method was applied to hydrocarbon generation of the lower and upper members of Eh3 source rocks, the
oil and gas resource potential was comparatively analyzed, and then favorable tectonic zones were pointed
out. In the lower members of Eh3, a set of semi-deep lake to deep lake high-quality source rocks occurs
rich in algae organisms, mainly of type II1, with a high abundance of organic matter. Most of the source
rocks are just in the peak stage of hydrocarbon generation, which is a favorable foundation for forming
abundant oil and gas resources in the Biyang Depression. The comparative analysis of the hydrocarbongeneration
quantities between lower and upper members of the Eh3 source rocks shows that the lower
members of Eh3 have good oil and gas resource potential, and the hydrocarbon-generation quantity
accounts for 51% of the total in Eh3. Specifically, the oil-generating quantity accounts for 50% of the total
and the gas-generating quantity accounts for two thirds of the total. Therefore, source rocks in the lower
members of Eh3 of the Biyang Depression have good oil and gas resource potential, which is a key factor
for future deep oil and gas exploration.
members of Eh3 in the Biyang Depression. The first section is generally regarded as a key target of oil
and gas exploration, but the resource potential of the lower members of Eh3 has been neglected. We
have obtained new knowledge about Eh3 from comprehensive geological research. The lower members
of Eh3 are high-quality and main source rocks, which have good oil and gas resource potential. This is a
new direction for oil and gas exploration. The geochemistry characteristics of source rocks of the lower
members of Eh3 in the lower Tertiary of the Biyang Depression were analyzed in detail. A basin modeling
method was applied to hydrocarbon generation of the lower and upper members of Eh3 source rocks, the
oil and gas resource potential was comparatively analyzed, and then favorable tectonic zones were pointed
out. In the lower members of Eh3, a set of semi-deep lake to deep lake high-quality source rocks occurs
rich in algae organisms, mainly of type II1, with a high abundance of organic matter. Most of the source
rocks are just in the peak stage of hydrocarbon generation, which is a favorable foundation for forming
abundant oil and gas resources in the Biyang Depression. The comparative analysis of the hydrocarbongeneration
quantities between lower and upper members of the Eh3 source rocks shows that the lower
members of Eh3 have good oil and gas resource potential, and the hydrocarbon-generation quantity
accounts for 51% of the total in Eh3. Specifically, the oil-generating quantity accounts for 50% of the total
and the gas-generating quantity accounts for two thirds of the total. Therefore, source rocks in the lower
members of Eh3 of the Biyang Depression have good oil and gas resource potential, which is a key factor
for future deep oil and gas exploration.
关键词
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Geochemistry, source rocks, hydrocarbon-generation potential, Biyang Depression