测井多参数及其灰色理论处理方法在埕岛油田的应用

Logging multiparameter and grey scale theory in application to reservoir evaluation in Chengdao Oilfield

1. 西安石油学院, 西安710061;2. 胜利油田测井公司, 东营257096

Xi'an Petroleum Institute, Xi'an 710061

本文利用测井多参数及其灰色系统理论, 研究埕岛油田储层评价的方法、技术及应用。它采用测井资料, 计算和分析地层评价参数, 与岩芯录井剖面、试油及地质资料进行对比, 统计确定出储层评价的标准和权值, 即确定灰色信息系统中每个灰数的特征值, 建立起储层综合评价的灰色理论处理方法。然后, 利用特征值参数去白化灰色系统, 实现地层岩性、储层参数、物性、含油气性评价和预测。采用本方法编制的程序, 在胜利埕岛油田10多口井中实际应用, 处理井段4700余米, 总体上与区内钻井取芯、试油和地质分析趋于一致。文中介绍了这一分析方法和程序的具体处理过程及应用效果。

An approach for reservoir evaluation in Chengdao Oilfield using logging multiparameter technique and grey scale theory is presented in the paper. It begins with a calculation step for the evaluation index of each formation based on log data, which is then correlated with strip log,geological data and data from potential test to statistically determine the criterion for reservoir evaluation and the weight for each index. In this way, the cigenvalue of each scale in a grey system is determined and presently employed to whiten the grey system, based on which the prediction for stratigraphic lithology, reservoir parameters, and the hydrocarbon potential is able to be brought about. A program written for the above method has been applied to the data from segments about 4700m in total in 10 odd wells in Chengdao Oilfield. The result is shown to match the core data, the data from potential test, and geological analyses on the whole. Everything regarding the approach is detailed in the paper.