油田采出液除铁用于配注聚合物工程改造  

Reconstruction Project of Iron Removal Process from Oilfield Produced Wastewater for Polymer Injection

作　　者：于永辉[1] 孙承林[1] 黄津[2] 闫云贵[3] 李学艺[2] 徐伟生[3] 邢立国[3] 伍星[3] 王金星[3] 

机构地区：[1]中国科学院大连化学物理研究所洁净能源国家实验室,辽宁大连116023 [2]大港油田第五采油厂,天津300283 [3]大港油田采油工艺研究院,天津300280

出　　处：《中国给水排水》2012年第10期66-69,共4页China Water & Wastewater

摘　　要：原采出液除铁工艺采用多相流泵/锰砂过滤工艺,由于混合污水中溶解氧浓度低,氧化反应时间短,导致工艺出水Fe2+浓度未达到设计要求。改造工程采用催化曝气氧化/改性锰砂过滤新工艺,曝气氧化时间为50 min。运行结果表明,工艺出水Fe2+浓度为0.3～0.5 mg/L,注聚井口聚合物粘度>45 mPa.s,各项指标满足设计要求。The iron from oilfield produced wastewater was removed by the original combined process of multiphase pump and manganese sand filtration. The effluent Fe2＋ concentration could not meet the designed requirement due to the low dissolved oxygen in the mixed wastewater and short oxidation time. Therefore, the new combined process of catalytic aeration oxidation and modified manganese sand filtration was adopted in the reconstruction project with the aeration oxidation time of 50 min. The running results show that the Fe2＋ concentration in the effluent is 0.3 to 0.5 mg/L, and the polymer viscosity at the entrance of polymer injection well is above 45 mPa · s. Thus all of the indexes can meet the design requirement.

关 键 词：采出液 催化曝气氧化 二价铁离子 聚合物粘度 

分 类 号：TE39[石油与天然气工程—油气田开发工程]