...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Hydrocarbons in Upland Groundwater, Marcellus Shale Region, Northeastern Pennsylvania and Southern New York, U.S.A.
【24h】

Hydrocarbons in Upland Groundwater, Marcellus Shale Region, Northeastern Pennsylvania and Southern New York, U.S.A.

机译：普通地下水的碳氢化合物，Marcellus页岩地区，东北宾夕法尼亚州和纽约南部，U.S.A.

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

Water samples from 50 domestic wells located 1 km (proximal) and 1 km (distal) from shale-gas wells in upland areas of the Marcellus Shale region were analyzed for chemical, isotopic, and groundwater-age tracers. Uplands were targeted because natural mixing with brine and hydrocarbons from deep formations is less common in those areas compared to valleys. CH4-isotope, predrill CH4-concentration, and other data indicate that one proximal sample (5% of proximal samples) contains thermogenic CH4 (2.6 mg/L) from a relatively shallow source (Catskill/Lock Haven Formations) that appears to have been mobilized by shale-gas production activities. Another proximal sample contains five other volatile hydrocarbons (0.03-0.4 mu g/L), including benzene, more hydrocarbons than in any other sample. Modeled groundwater-age distributions, calibrated to H-3, SF6, and C-14 concentrations, indicate that water in that sample recharged prior to shale-gas development, suggesting that land-surface releases associated with shale-gas production were not the source of those hydrocarbons, although subsurface leakage from a nearby gas well directly into the groundwater cannot be ruled out. Age distributions in the samples span similar to 20 to 10000 years and have implications for relating occurrences of hydrocarbons in groundwater to land-surface releases associated with recent shale-gas production and for the time required to flush contaminants from the system.
机译：为化学，同位素和地下水和地下水时代示踪剂分析了来自Marcellus Shale地区的山地地区1公里（近端）和> 1 km（远端）的50家井中的水样。占有针对性的，因为与来自深层的盐水和烃的天然混合在与谷的那些区域中的常见不太常见。 Ch 4 - 同位素，泼渣CH4浓度和其他数据表明，一个近端样品（5％的近似样本）含有来自相对浅的源（Catskill / Lock Haven地层）的热CH4（2.6mg / L），似乎已经存在由页岩天然气生产活动调动。另一个近端样品含有五种其他挥发性烃（0.03-0.4μg/ L），包括苯，比任何其他样品更多的烃。建模的地下水适度分布，校准在H-3，SF6和C-14浓度，表明在页岩气体开发前的该样品中的样品中的水，这表明与页岩天然气生产相关的土地表面释放不是源在那些碳氢化合物中，尽管从附近的气体直接进入地下水的地下泄漏不能排除出来。样品中的年龄分布类似于20至> 10000年，并对地下水中的碳氢化合物的发生与近期页岩气产量相关的碳氢化合物的发生以及造成冲洗系统所需的时间。

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