文献类型：期刊文献

英文题名：Short-process treatment technology of the produced liquid from offshore heavy oilfields

作者：Li, Lin[1];Ding, Guili[2];Li, Yudong[1];Liu, Yiqian[1];Li, Zhengjin[1];Jie, Hongkai[1];Yang, Qiang[1];Lu, Hao[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Sinolight surfactants technol Co LTD, Shanghai 201512, Peoples R China

年份：2025

卷号：78

外文期刊名：JOURNAL OF WATER PROCESS ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001570532000002)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 52025103 and 52370077) , the National Key Research and Development Program of China (Grant NO. 2019YFA0705800) and the Shanghai Rising Star Program (Grant No. 22QA1402600) .

语种：英文

外文关键词：Offshore heavy oilfield; Produced liquid; Short-process treatment; Oil-water separation; Produced water deoiling

摘要：The water content of the produced liquid from offshore heavy oilfields increases rapidly with mining years. The traditional treatment process of produced liquid based on chemical demulsification has a long process flow, large equipment footprint, and high chemical agent consumption. Owing to space constraints on offshore platforms, the treatment of a large amount of produced water has become the biggest challenge to stabilize and increase production. Herein, a short-process treatment technology based on physical separation was proposed and a pilot test was performed at the Bohai heavy oilfield. The oil content is <30 mg/L, the suspended solid content is <3 mg/L in the effluent using the proposed technology, which meets the reinjection standard. Furthermore, compared with the traditional process of "production separator + inclined plate separator + air flotation + walnut shell filter + dual media filter," the water treatment footprint is reduced by 75.41 %, the residence time is reduced by 69.23 %, and total consumption of chemical agents is reduced by >80 % (water clarifier and flotation agents are not used, and the demulsifier consumption is reduced by >80 %). This study provides a new idea for the green and efficient treatment of liquids produced in offshore oilfields, which helps the sustainable development of oilfields.