阿尔奇公式是用纯砂岩模型建立的理论方程，应用于不同性质的储集层中，是测井资料综合解释的基础。
Archie formula is established theoretically in clean sandstone model and applied to various reservoirs. It is the fundamentals of log interpretation.
地层水电阻率是测井解释中一个极其重要的参数，以纯地层条件推导的用于确定地层水电阻率的自然电位理论模型不适合泥质砂岩地层。
The therical water saturation model in shaly sandstone is derived from HB equation under the consideration of many factors that affect the reservoir conductance.
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