VOLCANIC ALTERATION OF NANPU-5 STRUCTURE IN BOHAI BAY BASIN: Effects on the Physical Property of Reservoir and Lower Limits of Physical Property
ZHANG Li-hua1, PAN Bao-zhi1, SHAN Gang-yi1, LIN Fa-wu2, LIU De-fang2
1. School of Earth Exploration Science and Technology, Jilin University, Changchun 130026, China; 2. Exploration and Development Institute of Jidong Oilfield Co., Ltd., Tangshan 063000, Hebei Province, China
Abstract：Study of thin sections and scanning electron microscope(SEM) data confirms that the volcanic reservoir in Nanpu-5 structure has been altered with different degrees. Based on the alteration mechanism of volcanic rocks, the effects of volcanic alteration on physical property of reservoir are analyzed. The methods of empirical statistics, porosity-permeability intersection, mercury injection parameters, stress sensitivity and minimum oil throat radius are applied to determine the lower limits of physical property, which are defined by porosity of 2.5% and permeability of 0.04×10-3 μm2. The determination of lower limits is conducive to the division of reservoir and non-reservoir, statistics of effective thickness and calculation of reserves. The study provides reference for the determination of physical property lower limits of altered volcanic rocks in other areas.
张丽华, 潘保芝, 单刚义, 林发武, 刘得芳. 渤海湾盆地南堡5号构造火山岩蚀变对储层物性影响及物性下限[J]. 地质与资源, 2020, 29(4): 351-356.
ZHANG Li-hua, PAN Bao-zhi, SHAN Gang-yi, LIN Fa-wu, LIU De-fang. VOLCANIC ALTERATION OF NANPU-5 STRUCTURE IN BOHAI BAY BASIN: Effects on the Physical Property of Reservoir and Lower Limits of Physical Property. GEOLOGY AND RESOURCES, 2020, 29(4): 351-356.
2020, Vol. 29 
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