多种地震信息预测油气的一种综合评判法

AN APPROACH TO HYDROCARBON PREDICTION FROM MULTUDIOUS SEISMIC INFORMATION

江汉油田物探研究所

Geophysical Prospecting Institute, Jianghan Oilfield

本文论述了油气预综合评判的一种新方法——双基点综合评判法。首先对不同属性的地震信息所建立的属性矩阵作规格化和加权处理,应用系统工程理论中的双基点法构造出一个基点为理想点,另一个基点为零点(反理想点);然后在属性空间中求取被评价点O_j与理想点的相对贴近度T_j,据此确定出被评价点的分类,建立评判函数。用文献[3]提供的资料所做的试算结果证明,这种方法的综合评判和油气预测精度是可靠的,运算也简便易行。

This paper deals with the Double-Base Point method,a new approach served to make an integrated judgement on hydrocarbon prediction. Its implementation procedures that users should follow include; firstly,to have the attributive matrixes based on the seismic information with different attributes regularized and weighted and then construct ideal points and non-ideal ones using"double-base point" method originated from system engineering; secondly, to determine in attribute space the relative adjacency between the evaluated points and ideal points. And based on which to define the assorted threshholds of the points evaluated so that discriminant function can be established.The trial result by using the information from REFERENCE[3] shows that the integrated approach being discussed as accuracy of hydrocarbon prediction are dependable. And it is proved uncomplicated and easy in its operation.