摘要
对济阳坳陷原油及油田水样品中的金银及其他成矿元素含量进行了测定 ,结果表明 ,原油尤其是稠油中的金含量较高 ,油田水样品的金和某些其他成矿元素含量也比较高。对这些元素含量分布特征的初步研究显示 ,金主要分布在富含S、N、O等杂原子的胶质沥青质组份中 ,可能与这些杂原子在低温下易与金形成配合物有关。油田水样品中金与砷、汞、铅等元素存在明显的相关关系 。
crude oil samples from different oil fields of the Jiyang Depression were collected and analyzed for their gold and silver concentrations. Result shows that they contain relatively high Au concentrations than those from most other oil basins in China. Except the highest value of 220.3×10 -9 , the average Au concentration of 48 oil samples is 3.60×10 -9 . Heavy oil contains higher Au concentrations than light oil. Most gold rich samples are from the reservoirs in upper Tertiary sandstone and Archean gneiss, of which the latter is the most important source rock for well known gold mining district of East Shandong peninsula, and the former is the direct erosive product of the latter. Further study reveals that gold mostly occurs in the bituminite and colloidal components of the crude oil. These components contain more S, N, O, Cl and other atoms, which may cause stable gold bearing complexes in crude oil. Concentrations of gold and some other ore elements in oil field water samples from the Jiyang Depression are also determined. Relatively high gold concentration and certain correlation between gold and other ore elements, i.e. As, Hg and Pb, are revealed. The partitioning relationship of gold in rock, oil and water is unknown, whereas this preliminary study shows that oil field water might bring out some gold from oil in the water oil separation process.
出处
《高校地质学报》
CAS
CSCD
2001年第3期345-350,共6页
Geological Journal of China Universities
基金
国家自然科学基金项目(49572108)
胜利石油管理局科技攻关项目(920124)资助
