CAJ | 학술논문

在采出液和采出水处理设施内污油的显微结构、污染物成分和相分离特性研究的基础上,结合模拟介质试验,揭示了污油中油水乳状液的固体颗粒稳定机制——少量硫化亚铁微粒沉积在原本具有良好水润湿性的其他杂质微粒表面上使其表面具有与硫化亚铁颗粒相同的油水双润湿性而易于吸附在油水界面上,形成阻碍油珠或水滴间相互聚并的屏障,是污油中油水乳状液稳定的最主要原因。结合大庆油田典型的采出液和采出水处理过程揭示了污油的形成和演化过程,提出了从源头上抑制进入采出液处理设施的机械杂质、减轻井筒和地面集油管道腐蚀等可有效抑制采出液和采出水处理设施内污油产生的措施。
재채출액화채출수처리설시내오유적현미결구、오염물성분화상분리특성연구적기출상,결합모의개질시험,게시료오유중유수유상액적고체과립은정궤제——소량류화아철미립침적재원본구유량호수윤습성적기타잡질미립표면상사기표면구유여류화아철과립상동적유수쌍윤습성이역우흡부재유수계면상,형성조애유주혹수적간상호취병적병장,시오유중유수유상액은정적최주요원인。결합대경유전전형적채출액화채출수처리과정게시료오유적형성화연화과정,제출료종원두상억제진입채출액처리설시적궤계잡질、감경정통화지면집유관도부식등가유효억제채출액화채출수처리설시내오유산생적조시。
Steric hindrance of contaminant particles was identified as the major mechanism governing the stability of the crude oil emulsions in slop oils based on the study of microscopic structure,phase separation behaviors and contaminants of slop oils,as well as the phase separation behaviors of model slop oils.Amphiphilic particles formed by the deposition of minor quantities of iron sulfides on the otherwise hydrophilic particles,which tends to adsorb and concentrate on oil/water interface like iron sulfides particles,exert strong steric hindrance to the coalesce of water droplets and oil droplets and act as the major stabilizer of the crude oil emulsions in slop oils.The formation processes of slop oils were summarized based on the typical produced fluid and produced water handling process of Daqing field.Countermeasures such as prevention of the entrance of contaminants into produced fluid handling facilities,anti-corrosion of tubing and surface pipelines were proposed to depress slop oil accumulation in produced fluid and produced water handling facilities.