Correction accuracy for clean sand and most of the shaly sand is less than 5% and 10% respectively.
纯砂岩的校正精度百分误差小于5%； 泥质砂岩校正误差绝大多数小于10%。
WaxmanSmits (WS) equation is an evolution of Acrhie equation for shaly sands, and it is a nonlinear equation.
方程是阿尔奇方程在泥质砂岩地层中的推广，W-S方程为非线性方程。
Oil bearing evaluation of low salinity water shaly sand reservoirs in the Liudong area is a difficult problem in log interpretation.
柳东地区低矿化度地层水储层的含油性评价是测井解释的一大难题。
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