| 王伟,李磊,邓小卫,喻腾.鄂尔多斯盆地西南缘白垩系环河组岩石物性特征研究[J].矿产勘查,2025,16(S2):1-4 |
| 鄂尔多斯盆地西南缘白垩系环河组岩石物性特征研究 |
| Study on petrophysical characteristics of Cretaceous Huanhe Formation in the southwest margin of Ordos Basin |
| 投稿时间：2025-11-22 |
| DOI：10.20008/j.kckc.2025s2001 |
| 中文关键词: 鄂尔多斯盆地 白垩系 环河组 岩石物性 |
| 英文关键词: Ordos Basin Cretaceous system Huanhe Formation petrophysical characteristics |
| 基金项目:本文受中国核工业地质局项目“鄂尔多斯盆地镇原—盐池地区铀矿资源调查评价”“鄂尔多斯盆地旬邑—盐池地区铀(202115-2)、矿资源调查评价与勘查”(202217)和“甘肃省镇原县新庄地区铀矿普查”(202417-1)联合资助。 |
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| 中文摘要: |
| 目前砂岩型铀矿地球物理测井岩性解释主要依据岩石电阻率差异进行，但是由于鄂尔多斯盆地西南缘白垩系环河组特殊的沉积环境，岩石电性差异总体不明显。为了系统厘定研究区环河组岩石物理特征，本 文从环河组沉积地质特征，以及系统采集样品与测试岩石的电阻率、极化率、密度、孔隙度等方面描述其 特征，最后分析不同岩性的测试结果，指出极化率和密度物性差异对应的测井方法。研究成果对研究鄂 尔多斯盆地西南缘环河组沉积环境、地球物理测井解释工作具有重要意义。 |
| 英文摘要: |
| Currently，the lithological interpretation of geophysical logging for sandstone-type uranium deposits primarily relies on differences in rock resistivity. However，due to the unique sedimentary environment of theCretaceous Huanhe Formation in the southwestern margin of the Ordos Basin，the differences in rock electrical properties are generally not pronounced. To systematically determine the petrophysical characteristics of the Huanhe Formation in the study area，this paper will describe its features from the perspective of sedimentarygeological characteristics of the Huanhe Formation，as well as systematically collected samples and tests of rock resistivity，polarization rate，density，porosity，and other aspects. Finally，it will analyze the test results of differ.ent lithologies and identify the logging methods corresponding to the differences in physical properties such aspolarization rate and density. This research content is of great significance for studying the sedimentary environ. ment of the Huanhe Formation in the southwestern margin of the Ordos Basin and the interpretation of geophysicallogging. |
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