多测井曲线合成应用方法初探

The primary discussion to the application of synthetic multiple-logging

中国石化河南油田勘探局地质调查处,河南南阳 473132

Geophysical Prospecting Company ofHenan Petroleum Prospecting Bureau, Nanyang 473132, China

采用单项测井曲线划分地层存在着多解性和局限性,为此,提出了一种把多条测井曲线融合成一条参数曲线的综合法。综合法的实质是在信号检测和估计理论的基础上建立地球物理测井数据综合研究数学模型。在进行综合处理之前,要对测井资料进行预处理和归一化处理,以消除或减弱测井信号中的异常点和随机信息以及统一量纲。应用综合法对多种地球物理测井资料进行了统计分析和综合处理,处理后得到的综合参数曲线突出了测井曲线的公共信息,减少或削弱了单一观测资料中的偶然误差,提高了综合测井资料的可信度。该综合法在地质分层、岩性分析和含油气预测以及合成标准测井曲线等方面有一定的应用范围。

Synthetic method is a mathematic model that is based on the well logging data, which is derived from the basic theory of signal checking and estimation. We can use the method to program that can be used to synthetically deal with multiple log curves. Pre-process and normalized process to log data before u-sing the synthetic 1 method, with remove or weaken abnormal point, random information and uniform dimension from the log signal. The comprehensive parameter curve enhance to common information of the log curves. It has some applications in geologic zona-tion, lithologic analysis, hydrocarbon prediction and composite log etc.