...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geochemistry, geophysics, geosystems >Natural H-2 in Kansas: Deep or shallow origin?
【24h】

Natural H-2 in Kansas: Deep or shallow origin?

机译：堪萨斯州的天然H-2：深层或浅层起源？

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A geochemical study of gas coming from three wells in northeastern Kansas supplements previous studies from the 1980s and points to a persistent regional phenomenon of H-2 production. In 2008, a new well showed, just after drilling, a free gas phase with more than 80 mole % of H-2, followed by water production associated with gas. This gas is mainly composed of N-2, He, H-2, and occasionally CH4, with changing proportions through time. A drastic decrease in H-2 at the well was observed since the aquifer is produced, along with occasional recharges in H-2 evidenced notably in the early phases of gas sampling. We demonstrate that this evolution of gas composition is closely associated to the well completion story. Accordingly, two distinct origins of H-2 are proposed: (1) deep crustal H-2: water reduction associated to iron oxidation in the Precambrian basement; (2) reactions occurring in the tubing, primarily attributed to high contents of reduced iron and/or dissolved organic carbon (DOC=4.1 mg L-1) in the water. The low D values averaging -760 are attributed to a low temperature process, possibly a re-equilibration with water. Furthermore, the suggested origins are supported by the observed gas associations: (a) deep crustal H-2 with radiogenic gases (He-4 and Ar-40) and metamorphic N-2 (N-15 averaging +2.5); (b) surficial H-2 with methane produced in the sedimentary aquifer and the tubing by methanogenic organisms.
机译：从20世纪80年代的东北堪萨斯州康斯康斯康斯三井的天然气研究综合研究，并指出了H-2生产的持续区域现象。 2008年，一个新的井，刚刚在钻孔后，自由气相具有超过80摩尔％的H-2，其次是与气体相关的水。这种气体主要由N-2，HE，H-2和偶尔CH4组成，随着时间的推移而改变比例。由于产生含水层，因此观察到井中的H-2在井中的急剧下降，以及H-2的偶尔充电显着在气体取样的早期相位中证明。我们表明，这种气体组成的演变与整理故事密切相关。因此，提出了两种不同的H-2的起源：（1）深层地壳H-2：与预先印范地下室的铁氧化相关的水降低; （2）在管中发生的反应，主要归因于水中的还原铁和/或溶解的有机碳（DOC = 4.1mg L-1）中的高含量。平均-760的低D值归因于低温过程，可能与水重新平衡。此外，所提出的起源是由观察到的气体关联的支持：（a）深色地壳H-2，具有辐射性气体（He-4和Ar-40）和变质N-2（N-15平均+2.5）; （b）沉积含水层中产生的甲烷的表层H-2和由甲烷生物的管道。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号