岩屑录井资料曲线识别岩性方法的改进

随着X射线荧光(XRF)录井技术的创立和推广,岩屑录井分析从定性到定量取得了飞速的发展。由于部分元素与岩性之间存在一定的相关性,目前利用元素含量变化趋势建立了一套基本的曲线解释方法。然而,在工作中曲线法所能达到的效果尚不能满足实际需要,给现场地质工作人员带来不便。拟依据不同元素与岩性之间的对应关系,进行元素优选,对优选之后的元素展开数据化处理、建立新模型的改进措施。改进后的结果在碎屑岩的岩性识别上相比之前更加合理,相信会在今后的油气勘探开发中发挥重要的作用。

Improvement of the Curve Method for Identifying Lithologies by Data of Cutting Logging

With the establishment and promotion in XRF logging technology,the analysis of cutting logging has achieved rapid development from qualification to quantification. Since some elements have a certain correlation with the lithology, the changing trend of the element content is used to establish a set of basic curve interpretation method. However, the method can not meet the practical demand, which brings inconvenience to the field geological workers. In this paper, based on the corresponding relationship between different elements and the lithology, elements optimization was carried out as well as data processing of optimized elements, improvement measures on building new model were put forward. The results show that the improved result in clastic rock lithology recognition is more reasonable than before ,and it may play an important role in the oil and gas exploration and development in the future..