全谱饱和度测井数据处理及解释方法研究

发布时间：2018-07-04 14:06

本文选题：峰漂校正 + 识别坏谱　；参考：《中国石油大学(华东)》2015年硕士论文

【摘要】：脉冲中子全能谱饱和度测井技术在油田引进投产后,实际应用中还存在许多难题,如谱数据处理和谱资料监测不完善,判断谱质量效果不佳,简单的解释模型和模板不能有效的适用于各种地质条件,因此需要有针对性研究提出谱数据处理方法、新的曲线校正方法和新的解释方法及解释模板,以最终提高剩余油解释符合率。本论文通过研究,取得以下几项主要成果。对全谱测井的非弹总谱和俘获谱进行了平滑处理,峰漂校正,获取非弹净谱,能窗选择和测井曲线的生成;采用时间谱累计计数/(俘获谱累计计数+非弹谱累计计数)、超产额倍数、同类谱前后谱相关性分析方法来识别坏谱;采用三次滤波法(2次中值滤波,1次汉明函数滤波),识别谱线上的跳点,简称为53H法滤波技术;对全谱测井曲线进行了归零化和温漂校正,消除仪器加电状态和温度对测井曲线的影响;对碳氧比曲线提出钙质校正和康普顿退降校正,利用校正后的赫尔佐格模型提高了剩余油饱和度的计算精度;对全谱测井完成了泥质含量,钙质含量,孔隙度,含油饱和度解释模型的建立和解释;应用驱油效率来评价水淹层水淹级别。
[Abstract]:After the introduction and production of pulsed neutron all-purpose spectral saturation logging technology, there are still many difficulties in practical application, such as the imperfect spectrum data processing and spectral data monitoring, and the poor effect of judging spectral quality. Simple interpretation models and templates can not be applied to all kinds of geological conditions, so it is necessary to study and propose spectral data processing methods, new curve correction methods, new interpretation methods and interpretation templates. Through the research, this paper has obtained the following main achievements. The inelastic total spectrum and capture spectrum of full spectrum logging are smoothed, peak drift correction, inelastic net spectrum obtained, energy window selection and log curve generation are obtained. Time spectrum accumulative counting / (capture spectrum accumulative counting), over yield multiple, correlation analysis of the same kind of spectrum before and after spectrum analysis are used to identify bad spectrum. The cubic filtering method (2 times median filter and 1 order hamming function filter) is used to identify the hopping point on the spectral line, which is referred to as the 53H filtering technique, and the full spectrum log curve is corrected by zeroing and temperature drift. The influence of the power state and temperature on the logging curve is eliminated, the calcium correction and Compton regression correction are proposed for the carbon-oxygen ratio curve, and the accuracy of residual oil saturation is improved by using the corrected Herzog model. The interpretation model of mud content, calcium content, porosity and oil saturation is established and interpreted for the whole spectrum logging, and the flooding efficiency is used to evaluate the water-flooded level of water-flooded zones.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.81

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