声波曲线重构反演技术在霍多莫尔地区储层预测中的应用

Application of acoustic curves reconstruction inversion technology of predicting reservoir in Huoduomoer area

霍多莫尔地区的储层与非储层(围岩)波阻抗差异不明显,利用常规波组抗反演识别岩性比较困难,不能有效预测有利储层的分布情况,无法满足精细储层预测的要求。在对测井曲线进行常规的归一化与标准化之后,通过综合分析岩性、测井、测井解释成果等资料,利用交汇图进行测井曲线敏感性分析,用优选出来的伽马曲线构建拟声波曲线。用拟声波曲线进行地震反演,很好地区分了本地区的砂岩和泥岩,预测了砂体的厚度与横向展布规律,在勘探生产过程中取得了较好的应用效果。

Wave impedance differences between reservoir and nonreservoir （surrounding rock） are not obvious in Huoduomoer area. It is difficult to identify lithology by using conventional impedance inversion. Distribution of reservoir can not be predicted effec- tively. And it can not meet the requirement of fine reservoir prediction. After conventional normalization and standardization of log presentation and through synthetic information analysis of lithology, logging, log interpretation results, etc, this paper analyzed sen- sitivity of log presentation on the base of crossplot and used optimal gamma curve to construct pseudo-acoustic curve. By using pseudo-acoustic curves to conduct seismic inversion, this paper distinguished sandstone and mudstone of this region clearly, pre- dicted the landscape orientation distribution and lengthways thickness of sandbody. This technology applied well in the process of exploration and production.