从哥伦比亚中部马格达莱纳河流域的石油源岩石的放射性评估
J L Guerrero1, R A Echavez2, A Barba-Lobo3
1Global Earth Change and Environmental Geology Research Group, Department of Geology, Physics and Inorganic Chemistry, ESCET, Universidad Rey Juan Carlos, c/Tulipán s/n, 28933, Móstoles, Spain; Department of Integrated Sciences, Research Centre on Natural Resources, Health, and the Environment (RENSMA), University of Huelva, Huelva, 21007, Spain.
Journal of environmental radioactivity
|March 5, 2026
概括
哥伦比亚的石油源岩石显示出大量的缩,超过了自然水平. 这凸显了在石油运营中监测自然存在的放射性物质 (NORM) 的必要性.
科学领域:
- 地质化学 地质化学
- 放射学研究 放射学研究
- 环境科学 环境科学
背景情况:
- 哥伦比亚正在探索非传统的碳化合物资源,但对石油形成的放射性数据有限.
- 几十年来,传统的石油和天然气开采并没有伴随着系统的放射性评估.
研究的目的:
- 为了建立哥伦比亚石油源岩石的第一个放射性基线.
- 在源岩样本中量化自然存在的放射性核素 (放射性核素).
- 研究元素和矿物学成分及其与放射性核素分布的相关性.
主要方法:
- 使用马格达莱纳山谷盆地中部八个源岩样本的分析,使用玛和α光谱学.
- 从238U和232Th衰变序列和40K中的放射性核酸的量化.
- 使用ICP-MS和X射线衍射 (XRD) 的元素和矿物学特征.
- 层次集群分析 (HCA) 用于识别地质化学关联.
主要成果:
- 源岩石呈现出高 (238U) 活性度 (平均220±80 Bq kg-1),高达参考水平的20倍,表明缩局部.
- (232Th) 和 (40K) 度处于自然范围或更低的范围内,与矿物学有关.
- 在还原条件下与,硫和和等微量元素相关的缩.
- 确定了明显的地质化学关联:与Ca,S,Cd,Ni,Zn,Mo;和与石化元素 (Al,Ti).
结论:
- 哥伦比亚的石油源岩石显示出明显的局部缩,需要仔细的放射性评估.
- 这些发现为在石油和天然气运营中管理自然存在的放射性物质 (NORM) 提供了关键的基线数据.
- 系统的放射性监测对于哥伦比亚非传统碳化合物资源的安全开发至关重要.
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