海上油田多介质过滤器气水反冲洗工艺优化  

Optimization of Gas-Water Backwashing Process for Multi-Media Filter in Offshore Oil⁃field

作　　者：杜虹 DU Hong(State Key Laboratory of Offshore Oil Efficient Development;Research Institute Co.,Ltd.,CNOOC;Tianjin Branch,CNOOC(China)Co.,Ltd)

机构地区：[1]海洋石油高效开发国家重点实验室,300452 [2]中海油研究总院有限责任公司 [3]中海石油(中国)有限公司天津分公司

出　　处：《油气田地面工程》2020年第7期39-44,共6页Oil-Gas Field Surface Engineering

摘　　要：渤海某油田实施聚合物驱后面临生产污水处理难度大的问题,生产污水系统过滤器滤料颗粒易受含聚产出液影响出现颗粒黏度升高,附着力增强,滤料再生率下降,甚至板结成块,原气水反冲洗工艺已无法满足生产水的处理指标控制要求。通过试验研究提出优选滤料粒径,变更气水反冲洗气源,提升气冲洗强度等工艺优化措施,有效地解决了滤料污染后再生困难的技术难题,通过优化反冲洗工艺参数,使滤后水含油、悬浮物固体含量得到控制,其中悬浮物固体质量浓度下降约6 mg/L,适应油田开发后期水质发生变化的特点。After implementing polymer flooding in an oilfield in Bohai Sea,it is difficult to treat the production sewage,and the filter particles in the production sewage system are easily affected by the poly-containing produced liquid,resulting in the increase of particle viscosity and adhesion,the decrease of filter material regeneration rate,and even the formation of solid block.The original gas-water backwashing process has been unable to meet the requirements of produced liquid treatment.Through experimental research,process optimization measures such as selecting the particle size of filter material,changing the gas source of gas-water backwashing and improving the strength of gas washing are proposed,and the technical problems of filter material pollution regeneration in the actual production of oilfield is effectively solved.By optimizing the backwashing process parameters,the water after filtration contains oil and the solid content of suspended solids is controlled,among which the solid mass concentration of suspended solids decreases by about 6 mg/L,which is suitable for the characteristics of water quality changes in the later stage of oilfield development.

关 键 词：含聚采出液处理 多介质过滤器 气水反冲洗 滤料再生 

分 类 号：X741[环境科学与工程—环境工程]