渤海A区油田是国内目前已发现的规模最大的中生界花岗岩潜山油气田.由于潜山复杂多样、横向非均质性强,传统的测井曲线标准化很难满足EI反演对测井数据的要求.为了进一步提高测井数据精度,本文提出了一种分区带测井曲线标准化方法:首先根据研究区地震断块构造空间解释,结合测井解释结果,将工区合理划分为不同的标准化区带,然后采用均值校正法进行分区带标准化.在渤海A区油田的EI反演中对比未标准化、用常规方法标准化和分区带标准化的反演结果,发现分区带标准化方法得到的反演剖面与地震剖面对应最好.在渤海A区油田进行分区带测井曲线标准化是获得合理、准确的EI反演结果的关键.%The A oilfield is a large-scale Mesozoic buried-hill granite oilfield in the Bohai Sea.It shows that the logging data after traditional normalization can not meet the high requirement in EI inversion because of the strong lateral heterogeneity of the buried-hill.Therefore,a method of partition log curve normalization is proposed in the article so as to enhance the precision of logging data.Firstly,the research area is divided into several reasonable segments in reference to the structural segmentation and logging interpretation result,and the mean correction method is used to normalize the partition log curve.The comparison of the EI inversion results with no normalization,traditional normalization and partition normalization in A oilfield of Bohai Sea reveals that the partition log curve normalization method produces better and more reliable inversion results.Therefore,the exercise of log curve partition normalization is the key to get reasonable and accurate EI inversion results in this area.
展开▼
