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针对砂泥岩沉积剖面、低矿化度地层水的沉积特征，从理论上探讨了应用视地层水电阻率与自然电位差的交会法解释复杂地层水油水层的可行性和有效性，应用该方法对苏丹六区进行了多口井的解释，取得显著效果。
Aiming at the sedimentary characteristics of sandstone-mudstone profile and low-salinity formation water, the feasibility and effectiveness of the cross-meeting method for interpreting complex formation water-oil-water layer are discussed theoretically. By applying this method The interpretation of many wells in the six districts of Sudan achieved remarkable results.