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“德雷伏效应”是深侧向测井在美国西德克萨斯德雷伏盆地中出现的一种视电阻率异常,即在巨厚硬石膏层下面的砂岩层段视电阻率被异常地提高或呈“梯度”状。“泸州效应”是深双侧向在四川泸州地区二迭系阳新统地层中出现的一种视电阻率异常,即在较厚的致密石灰岩地层下面的裂缝渗透层段,视电阻率被异常的降低,甚者在气水层段出现深浅双侧向视电阻率倒转。
The Dreyfus effect is an apparent resistivity anomaly that occurs in the deep lateral log in the Delaware Basin, West Texas, that is, the apparent resistivity of the sandstone section below the thick anhydrite layer is abnormal To improve or “gradient” shape. Luzhou Effect is an apparent resistivity anomaly appearing in the deep-biannual Late Permian Yangxintong Formation in Luzhou area, Sichuan Province. That is, the apparent resistivity is abnormal in the fracture infiltration section under the thick dense limestone stratum Reduce, or even appear in the gas and water layers deep and shallow double-sided apparent resistivity inversion.