丰谷须四段钙屑砂岩储层具有低伽玛、高电阻、高波阻抗等特点，储层含气后波阻抗值有所降低，但仍高于或接近于泥岩。
The calcarenaceous sandstone reservoir in the 4th Member of Xujiahe Formation in Fenggu area are of the characteristics of low GR, high resistance and high impedance.
丰谷须四段钙屑砂岩储层具有低伽玛、高电阻、高波阻抗等特点，储层含气后波阻抗值有所降低，但仍高于或接近于泥岩。
The calcarenaceous sandstone reservoir in the 4th Member of Xujiahe Formation in Fenggu area are of the characteristics of low GR, high resistance and high impedance.
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