碎屑岩数字露头岩性识别及延长组砂体定量刻画  

Identification of Lithology and Quantitative Characterization of Sand Bodies Based on Yanchang Formation Clastic Rocks Digital Outcrop

作　　者：曾齐红[1] 马志国 王文志 邵燕林[2] 申晋利[1] 邢学文[1] 

机构地区：[1]中国石油勘探开发研究院,北京 [2]长江大学地球科学学院,湖北 武汉

出　　处：《地球科学前沿（汉斯）》2024年第6期879-885,共7页Advances in Geosciences

摘　　要：地面激光扫描仪可以快速获取野外数字地质剖面的几何信息和激光强度信息。本文基于几何信息建立数字地质露头模型,研究激光强度与碎屑岩岩性的相关性,提出碎屑岩岩性激光强度识别方法。在鄂尔多斯盆地延长组致密砂岩地质露头进行应用,建立了延长组长8滩坝沉积露头高精度三维数字露头模型,在数字露头上直接进行岩性识别,进而详细分析了层序格架。本文为碎屑岩地质剖面的室内反复研究提供了新手段。Ground laser scanners can quickly obtain geometric information and laser intensity information of digital geological profiles in the field. Establishing a digital geological outcrop model based on geometric information, studying the correlation between laser intensity and clastic rock lithology, and proposing a laser intensity identification method for clastic rock lithology. A high-precision three-dimensional digital outcrop model was established for the Yanchang Formation tight sandstone geological outcrop in the Ordos Basin. Lithology identification was directly performed on the digital outcrop, and the sequence framework was analyzed in detail.

关 键 词：数字露头 激光强度 岩性识别 延长组 砂体展布 

分 类 号：P61[天文地球—矿床学]