多点地质统计学建模方法在复杂叠置样式砂体表征中的应用

Complex superimposition type sandbody characterized by multiple-point geostatistics modeling method

在分析常规建模方法优劣势的基础上,提出在研究区试用多点地质统计学建模方法,重点对砂体的叠置样式进行了研究,据此对训练图像的来源和使用方法进行分析研究,并根据沉积相接触关系、相比例、泥岩含量等参数选择出最佳训练图像,应用在研究区建立沉积相模型。应用2种方法对模型进行了验证,效果表明该方法对复杂叠置样式的砂体相建模具有较明显的优势。

Based on the analysis of the merit and demerit of conventional modeling methods,a multiple-point geostatistics modeling method was proposed in the research area. The study was focus on the superimposed style of sandbody. On the above base,it was studied on the source and application method of training images. And then according to the contact relationship of facies,facies ratio,shale content,etc.,the best training image was chosen. Finally,a deposition model was established in the research area. The accuracy of the model was verified by two methods including reserves fitting and production performance fitting. The results showed that this method has more obvious advantages in characterizing the complex superimposed style sand body. The method was applied in CX Oilfield for the first time and can provide reference for the similar oil-gas field in East Sea.