Abstract Produced water generated from oil/gas reservoirs is a cost burden for oil/gas producers, with over 21 billion barrels of the waste generated in 2019. Average disposal costs range from $4.00–$8.00·bbl−1, with up to $20·bbl−1 spent on transportation alone. Dissolved solids content is a contributing factor which limits economical treatment options for this waste stream. This work proposes a novel technique that can handle high salinity waste, employing favorable properties past the critical point of water. In this study, process simulation of two supercritical water desalination (SCWD) scenarios was completed. Zero liquid discharge (ZLD) and brine concentration operating scenarios were compared, weighing the associated economics and benefits for each case. The results were shown to be economically feasible for brines with a high dissolved solids content, ranging from $3.49 to $17.28·bbl−1 in an expanded sensitivity analysis.

中文翻译：

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先进的超临界水基工艺概念，用于在石油/天然气生产中处理和有益地再利用盐水

摘要 油气藏产生的采出水是油气生产商的成本负担，2019 年产生的废物超过 210 亿桶。平均处理成本范围为 $4.00–$8.00·bbl−1，最高可达 $20·bbl −1 仅用于交通。溶解固体含量是限制该废物流经济处理选择的一个促成因素。这项工作提出了一种新技术，可以处理高盐度废物，利用超过水临界点的有利特性。在本研究中，完成了两种超临界海水淡化 (SCWD) 情景的过程模拟。对零液体排放 (ZLD) 和盐水浓度操作方案进行了比较，权衡了每种情况的相关经济性和收益。