利用标准砂层组采用趋势面分析进行多井资料标准化

Using standard sand set to do multi-well logs normalization with histogram and trend surface analysis technology

由于各测井系列之间仪器性能、测量环境、人为操作等因素的不同,导致工区不同井的测井数据存在一定的系统误差.测井资料标准化是多井储层评价中的基础工作,是消除测井资料系统误差、提高储层参数计算精度的关键.标准化方法较多,且各有优缺点.本文以多井密度资料标准化为例,根据工区地质情况,利用标准砂层组采用直方图和趋势面分析技术对其进行了区域标准化处理.标准化处理后的密度测井值更符合本地区地质变化规律,有效地降低了非地质因素给测井数据带来的误差,实际应用中取得了明显的效果.

As the differences of instrument performance, measuring environment, manual operation and so on oetween the log series, the logging data of different wells in the work area has some systematic errors. The normalization of well logs is one basic work in multi-well formation evaluation and it is the key to improve and enhance the calculation precision of formation parameter. There are many methods to do well log normalization for different applications witch has different shortcomings, Considering the geology of work area, this paper makes multi-well density log data normalization as an example, and presents a standardized method combining histogram and geology trend analysis technologies. The density log data after normalization consistent with the geological changes better, and reduces the error caused by non-geological factors effectively. Practical application shows that this method can take good effect in multi-well formation evaluation.