文献类型：期刊文献

英文题名：A review of treatment technologies for produced water in offshore oil and gas fields

作者：Liu, Yiqian[1];Lu, Hao[1];Li, Yudong[1];Xu, Hong[2];Pan, Zhicheng[1];Dai, Pinyi[1];Wang, Hualin[3];Yang, Qiang[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]CNOOC China Ltd Qinghuangdao, 32-6 BoZhong Operating Co, Tianjin 300459, Peoples R China;[3]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：775

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20210909977464);WOS:【SCI-EXPANDED(收录号:WOS:000641610200005)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 51678238, 51722806, 21908057).

语种：英文

外文关键词：Offshore oil and gas; Offshore platform; Produced water; Treatment technology; Development tendency

摘要：Offshore oil and gas production is increasingly growing popular globally. Produced water (PW), which is the largest byproduct of oil and gas production, is a complex mixture of dissolved and undissolved organic and inorganic substances. PW contributes considerably to oil pollution in the offshore petroleum and gas industry owing to the organic substances, which mainly include hydrocarbons; this is a major concern to researchers because of the long-term adverse effects on the ecosystem. Since the development of offshore petroleum and gas industry, the PW treatment process has been classified into pretreatment, standard-reaching treatment, and advanced purification treatment based on the characteristics of PW and has been coupled with the environmental, economic, and regulatory considerations. The mechanism, design principle, application, and development of conventional technologies for PW treatment, such as gravity and enhanced gravity sedimentation, hydrocyclone, gas flotation, and medium filtration, are summarized in this study. Novel methods for further application, such as tubular separation, combined fibers coalescence, and membrane separation, are also discussed. Enhancement of treatment with multiple physical fields and environmentally friendly chemical agents, coupled with information control technology, would be the preferred PW treatment approach in the future. Moreover, the PW treatment system should be green, efficient, secure, and intelligent to satisfy the large-scale, unmanned, and abyssal exploration of offshore oil and gas production in the future. (C)2021 Elsevier B.V. All rights reserved.