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东营凹陷西部滩坝砂岩储层中发现了石油地质储量近1×108t的油藏,滩坝砂岩沉积体具有其他沉积体不同的测井响应特征。总结了不同岩性、不同物性和含不同流体性质下储层的测井组合响应特征和油层、干层、水层识别的具体方法。地层渗透率低和储层压力大是造成该区微电极测井不同于其他地区的原因。该区地层水矿化度总体偏高使油层段深、中、浅电阻率测井呈现无差异,而水层则呈现较大差异。同时由于储层含高矿化度束缚水,干层呈现低孔隙度、低电阻率的特点。
Reservoirs with nearly 1 × 108t of oil geologic reserves have been found in beach sandstones reservoirs in the west of Dongying Depression. Sandbank sediments of beach dam have different logging response characteristics of other sedimentary bodies. Summarize the logging combination response characteristics and reservoir oil layer, dry layer and water layer identification methods of reservoir with different lithology, different physical properties and different fluid properties. The low formation permeability and high reservoir pressure are the reasons that the microelectrode logging in this area is different from other regions. The high salinity of formation water in this area makes the deep, medium and shallow resistivity logging show no difference, while the water layer shows a big difference. At the same time, due to the high salinity of bound water in the reservoir, the dry layer shows low porosity and low resistivity.