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首页> 外文期刊>Environmental Research Letters >Flared natural gas-based onsite atmospheric water harvesting (AWH) for oilfield operations
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Flared natural gas-based onsite atmospheric water harvesting (AWH) for oilfield operations

机译：基于火炬气的天然气现场油田集水（AWH），用于油田运营

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Download video Transcript View all Environ. Res. Lett. video abstracts Natural gas worth tens of billions of dollars is flared annually, which leads to resource waste and environmental issues. This work introduces and analyzes a novel concept for flared gas utilization, wherein the gas that would have been flared is instead used to condense atmospheric moisture. Natural gas, which is currently being flared, can alternatively power refrigeration systems to generate the cooling capacity for large scale atmospheric water harvesting (AWH). This approach solves two pressing issues faced by the oil–gas industry, namely gas flaring, and sourcing water for oilfield operations like hydraulic fracturing, drilling and water flooding. Multiple technical pathways to harvest atmospheric moisture by using the energy of natural gas are analyzed. A modeling framework is developed to quantify the dependence of water harvest rates on flared gas volumes and ambient weather. Flaring patterns in the Eagle Ford Shale in Texas and the Bakken Shale in North Dakota are analyzed to quantify the benefits of AWH. Overall, the gas currently flared annually in Texas and North Dakota can harvest enough water to meet 11% and 65% of the water consumption in the Eagle Ford and the Bakken, respectively. Daily harvests of upto 30 000 and 18 000 gallons water can be achieved using the gas currently flared per well in Texas and North Dakota, respectively. In fifty Bakken sites, the water required for fracturing or drilling a new well can be met via onsite flared gas-based AWH in only 3 weeks, and 3 days, respectively. The benefits of this concept are quantified for the Eagle Ford and Bakken Shales. Assessments of the global potential of this concept are presented using data from countries with high flaring activity. It is seen that this waste-to-value conversion concept offers significant economic benefits while addressing critical environmental issues pertaining to oil–gas production.
机译：下载视频成绩单查看所有环境。 Res。来吧视频摘要每年燃烧数百亿美元的天然气，这导致资源浪费和环境问题。这项工作介绍并分析了火炬气利用的一种新颖概念，其中本来会火炬气被用来冷凝大气中的水分。当前燃烧的天然气可以替代地为制冷系统提供动力，以产生用于大规模大气水收集（AWH）的冷却能力。这种方法解决了油气行业面临的两个紧迫问题，即瓦斯燃烧和为油田作业（如水力压裂，钻井和注水）采购水。分析了利用天然气能源收集大气水分的多种技术途径。建立了一个建模框架，以量化集水率对火炬气量和周围天气的依赖性。分析了德克萨斯州Eagle Ford页岩和北达科他州Bakken页岩的火炬分布，以量化AWH的效益。总体而言，目前每年在得克萨斯州和北达科他州燃烧的天然气可以收集到足够的水，分别满足Eagle Ford和Bakken用水量的11％和65％。使用目前分别在德克萨斯州和北达科他州的每口井喷出的天然气，每天可收获多达3万加仑和18000加仑的水。在五十个巴肯地区，压裂或钻探新井所需的水可以分别在仅3周和3天内通过基于火炬气的现场AWH来满足。对于Eagle Ford和Bakken页岩，此概念的好处已被量化。使用来自火炬活动高的国家的数据，对这一概念的全球潜力进行了评估。可以看出，这种废物价值转换概念在解决与油气生产有关的关键环境问题的同时，提供了显着的经济效益。

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