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Influence of Water Salinity on the Petrophysical Properties of Shaly Sandstone
Author(s): 
Pages: 113-115
Year: Issue:  2
Journal: WELL LOGGING TECHNOLOGY

Keyword:  泥质砂岩束缚水饱和度地层水矿化度岩石电导率核磁共振T2截止值;
Abstract: 依据多矿化度岩石电性及核磁特性实验,研究不同矿化度下泥质砂岩的束缚水饱和度、岩石电性以及核磁共振的变化特征.研究表明,不同矿化度下的泥质砂岩束缚水饱和度不同,随饱和溶液矿化度的增大而减小;在地层水矿化度较低情况下,由于较高的束缚水含量和泥质附加导电性,岩石的电阻率也可能呈现低电阻率特征;T2受到饱和溶液矿化度的影响,矿化度的变化带来T2谱分布形态的变化,T2截止值随饱和溶液矿化度的增大而减小.
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