On the basis of crossplot and ratio methods, the features of gas zone distribution in both horizontal and vertical direction by means of multiwell evaluation.

• 本文从测井曲线环境校正和侵入校正着手，利用有效孔隙度差值交会法、视流体时差与视流体密度比值法等较准确地识别气层，提高了解释符合率。