论文部分内容阅读
根据夹层的岩性、物性特征,河流相储层中的夹层一般可分为泥质夹层、灰质(钙质)夹层和物性夹层,由于这3种夹层对流体运移影响程度不同,因此剩余油的分布也有差异。综合利用自然伽马、微梯度、微电位、微电极、声波时差和井径等参数的变化幅度能够较为灵敏地识别夹层性质,并建立了3种夹层的雷达图识别模式,总结出了不同夹层定量识别特征值,适用于程序化批量处理数据。在孤岛油田利用水平井挖潜夹层上部剩余油的过程中,利用这一方法优选泥质夹层及厚度较大的物性夹层发育的区域部署水平井,取得了良好的生产效果,提高采收率达4%。
According to the lithology and physical property of interlayer, the interlayer in fluvial facies can be divided into argillaceous intercalation, calcareous intercalation and interbedded intercalation. Since these intercalations have different influence on fluid migration, residual oil The distribution is also different. The comprehensive utilization of natural gamma ray, micro-gradients, micro-potentials, microelectrodes, acoustic time lag and well diameter and other parameters of the range of changes can be more sensitive to identify the nature of the interlayer, and established three kinds of sandwich radar pattern recognition, summed up the different layers Quantitative identification of eigenvalues for programmatic batch processing of data. In Gudao Oilfield, horizontal wells are used to excavate the residual oil in the upper part of the interlayer. By using this method, it is preferable to deploy horizontal wells in regions where muddy intercalations and thicker interbeds are developed, and good production results are achieved and oil recovery up to 4 %.