2016, 35(4) 1084-1094 DOI:     ISSN: 1004-5589 CN: 22-1111/P

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Keywords
sandstone reservoirs
oil saturation
oil-bearing level
Shuangyang Formation
Luxiang fault de- pression
Yingtong Basin
Authors
ZHAO Shi-Le
CHENG Ri-Hui
JIANG Fei
XU Zhong-Jie
LIU Bai-Yi
PubMed
Article by Zhao, S. L.
Article by Cheng, R. H.
Article by Jiang, F.
Article by Xu, Z. J.
Article by Liu, B. Y.

Analysis of oil saturation and oil-bearing level in block-C of Luxiang fault depression

ZHAO Shi-Le, CHENG Ri-Hui, JIANG Fei, XU Zhong-Jie, LIU Bai-Yi

College of Earth Sciences��Jilin University��Changchun 130061��China

Abstract��

The comprehensive study of lithology��oil-bearing level and oil saturation of the 2nd Member of Shuangyang Formation established the suitable calculation method of oil saturation for block-C�� The effect of deposi- tion and structure on oil-bearing level was analyzed compared with actual oil-bearing level�� Oil reservoir rocks of the 2nd Member of Shuangyang ��eservoirs in the studied area are mainly siltstone��fine sandstone and glutenite�� Oil levels of reservoirs are all above fluorescence�� Most of calculated oil saturations��based on Archie��are consistent with the actual oil saturation�� Oil saturation of 70%��50% and 38% are regarded as the distinguishing criteria for gas layer��oil layer��oil-water layer and water layer�� The oil-bearing level of reservoirs in the studied area is con- trolled by both deposition and structure�� The deposition mainly controls rock textures and physical properties of the reservoir��while structure controls hydrocarbon accumulation��i. e�� ��the actual oil saturation in structural highs is higher than the calculated result��while in structural lows is lower than the calculated result��

Keywords�� sandstone reservoirs   oil saturation   oil-bearing level   Shuangyang Formation   Luxiang fault de- pression   Yingtong Basin  
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