油气田水伴生资源提取技术进展及应用  

Progress and applications of extraction technologies for associated resources in the produced water of oil and gas field

作　　者：高云云 文绍牧[2] 范锐[2] 陈立 谭遥 宋彬 GAO Yunyun;WEN Shaomu;FAN Rui;CHEN Li;TAN Yao;SONG Bin(Research Institute of Natural Gas Technology,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan,China;PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan,China)

机构地区：[1]中国石油西南油气田公司天然气研究院 [2]中国石油西南油气田公司

出　　处：《石油与天然气化工》2024年第5期119-128,共10页Chemical engineering of oil & gas

基　　金：中国石油天然气股份有限公司攻关性应用性科技专项“油气田战略新兴资源开发利用关键技术研究与应用专题二—油气田卤水资源勘查与有价元素综合利用关键技术研究”(2023ZZ31YJ05);中国石油西南油气田公司科研项目“气田水提锂用吸附剂的吸附性能评价及吸附剂合成研究”(20230313-11)。

摘　　要：近年来,随着油气勘探力度的逐渐增大,油气田水量逐年增加,由此带来诸多环境问题,而部分油气田水中的伴生元素的含量均超过工业开采品位,适合综合开采或者单独开采。因此,分析油气田水中伴生元素综合利用的可行性并提出可行技术路线具有重要意义。对油气田水的水质特点和资源分布特征进行了总结,剖析了油气田水中伴生元素锂、溴、钾提取技术的研究和应用现状,阐述了目前盐湖卤水中锂、溴、钾提取技术对于油气田水的适用性及其存在的问题。结合油气田水中伴生元素提取技术和应用现状,认为吸附法提锂+热溶冷结晶法(或冷分解−浮选工艺)提钾+电氧化法提溴是油气田水中伴生有价元素综合利用可行的技术路线。目前的油气田水产业化只针对提锂,应尽快打通伴生资源综合利用全流程,寻求环保经济的油气田水伴生资源综合利用和达标处理工艺,为进一步工业化应用提供理论支撑,助力油气行业绿色高质量发展。In recent years,with the gradual increase of oil and gas exploration,the produced water of oil and gas fields has increased year by year,bringing many environmental problems,and the content of associated elements such as lithium,potassium and bromine in the produced water of some oil and gas fields has exceeded the industrial mining grade,which is suitable for comprehensive mining or separate mining.Therefore,it is of great practical significance to analyze the feasibility of comprehensive utilization of associated elements in oil and gas field water and put forward feasible technical routes.The water quality characteristics and resource distribution characteristics of oil and gas field water were summarized.And the research and applications of extraction technologies of associated elements lithium,bromine and potassium from deep brine such as the produced water of oil and gas field were anatomized.The applicability and existing problems of lithium,bromine,and potassium extraction technologies in salt lake brine for oil and gas field water were elaborated.Combined with the extraction technologies and applications of associated elements in oil and gas field water,it is considered that extraction of lithium by adsorption,extraction of potassium by hot solution and cold crystallization(or cold decomposition-flotation process)and bromine extraction by electrooxidation are feasible technical routes for comprehensive utilization of associated valuable elements in oil and gas field water.At present,the industrialization of oil and gas field water is only aimed at lithium extraction,and the whole process of comprehensive utilization of associated resources should be opened up as soon as possible,and the comprehensive utilization of oil and gas field water associated resources and standard treatment process should be sought for environmental protection and economy,so as to provide theoretical support for further industrial application and help the green and highquality development of the oil and gas industry.

关 键 词：油气田采出水 伴生元素 提锂 提溴 提钾 吸附剂 

分 类 号：TE39[石油与天然气工程—油气田开发工程]