含聚采出水悬浮固体含量测定方法的改进

摘要

目前含聚采出水的悬浮物测定一般采用石油天然气行业标准SY/T 5239—2012推荐的滤膜法。针对新疆油田七东1含聚采出水按照标准滤膜法测定易结垢问题，采用双膜法替代标准中原测定方法，过滤速率均由原来的10 min过滤15 mL提高到100 mL以上。用不同污水对两种测试方法进行对比发现，双膜法较现行标准在测定二元驱污水和稠油污水悬浮物含量时过滤体积分别由15 mL和50 mL提高到了265 mL和240 mL，引入的最大误差由原来的26.67 mg/L和8 mg/L减小到了1.5 mg/L和1.66 mg/L。%The membrane filtration method recommended in petroleum and gas industry standard SY/T5239-2012 is always used in determining suspend solids content in polymer flooding produced water at present. Instead of the traditional membrane filtration method, double velum method is used in polymer flooding produced water from Xinjiang oilfield sev-en east 1 which has severer scaling problems. Filtration rate is increased from 15 mL to over 100 mL during 10 min.Experiment is conducted with polymer-surfactant compound flood-ing produced water and heavy oil sewage produced. Compared with traditional membrane filtration method, filtration volume is more when using double velum method. The volume of polymer-surfactant compound flooding produced water increases from15 mL to 265 mL and the volume of heavy oil sewage produced increases from 50 mL to 240 mL. Errors from polymer- surfactant compound flooding produced water decreases from 26.67 mg/L to 1.5 mg/L,while errors from heavy oil sewage produced decreases from 8 mg/L to 1.66 mg/L.