青海油页岩地质勘查过程采样长度的确定

发布时间：2018-04-13 06:10

  本文选题：油页岩 + 采样长度　； 参考：《中国矿业》2017年12期

【摘要】：为确定青海油页岩勘查过程中油页岩的最佳采样长度(以下简称"样长"),在系统开展野外地质工作和样品采集化验基础上,分析认识青海油页岩地质特征,分别用类比法、统计学方法和试验法,得出技术和经济方面均合理的最大样长。结果显示:(1)由于油页岩与同为固体可燃有机岩煤的宏观识别程度、有用组分的变化过程和分布均匀程度均存在差异,所以不能完全参考煤的采样规格;(2)通过统计分析Y-1Y和Y-6Y井油页岩含油率正态分布类型为对数分布,与许多钼、锡、钨以及贵金属矿床的典型样品数据正态分布形态类似,可类比其样长规格,确定油页岩样长为1.5~2.0m;(3)对Y-1Y井中选定的加密采样层段含油率数据应用减稀法得出最大样长为1.5m或1.6m。
[Abstract]:In order to determine the optimum sampling length of oil shale in Qinghai oil shale exploration process (hereinafter referred to as "sample length"), on the basis of systematic field geological work and sample collection test, the geological characteristics of Qinghai oil shale are analyzed and recognized, and the analogy method is used respectively.The maximum sample length of both technical and economic aspects is obtained by statistical and experimental methods.The results show that due to the macroscopic recognition degree of oil shale and the same solid combustible organic rock coal, the variation process and distribution uniformity of useful components are different.Therefore, the normal distribution type of oil content of oil shale in Y-1Y and Y-6Y wells is logarithmic distribution, which is similar to the normal distribution form of typical sample data of many molybdenum, tin, tungsten and precious metal deposits.The oil shale sample length is determined to be 1.5 ~ 2. 0 m ~ 3) by using thinning reduction method, the maximum sample length is 1.5 m or 1.6 m for the selected infill sampling interval oil content data in Y-1Y well.
【作者单位】： 吉林大学地球科学学院;青海省地质调查局;青海煤炭地质一五勘探队;中国地质调查局西安地质调查中心;
【基金】：国家自然科学基金项目资助(编号:41502200;41602162) 国家科技重大专项资助(编号:2016ZX05034001-006) 青海省地勘基金项目资助(编号:2013274011kc001;2014057043kc006;2015083086kc002)
【分类号】：P618.12
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本文编号：1743241