复杂地层水剖面测井精细解释方法研究

乌尔禾油田属于中孔、低渗油藏，储层非均质性严重；地层水矿化度多变，油、水层的识别难度大；油藏的储层物性变化大，油水分布关系复杂。为此，给测井精细解释带来诸多困难。针对该区地层水电阻率多变等实际情况，在明确地层水在平面及纵向的分布规律之后，综合应用多种方法计算了地层水电阻率，并重点开展了测井精细解释研究。通过提高含水饱和度等储层物性参数的测井解释精度，为地质建模和储量计算提供可靠的基础参数。

Study on fine logging interpretation of complex formation water profile

Wu Erhe Oilfield belongs to medium porosity, low permeability oil reservoir, and is intensively heterogeneous. The salinity of formation water is changeable, oil and water layers are difficult to identify. Reservoir petrophysical property changes greatly, and the distribution of oil and water is complex. These have brought many difficulties to fine logging interpretation. In accordance with the changeableness of formation water resistivity, the resistivity is calculated by comprehensively using of multi methods on the basis of clear understanding of formation water distribution both laterally and vertically, and fine logging interpretation has been performed as a focal point. The improvement in logging interpretation accuracy of petrophysical parameters like water saturation has provided reliable basic data for geological modeling and reserve calculation.