作　　者： ; ; ;

机构地区： 中海油能源发展股份有限公司

出　　处： 《油田化学》 2020年第1期150-154,共5页

摘　　要： 伊拉克米桑油田外输原油含盐量经常高于合同规定的28 mg/L的要求,影响油田提产计划,亟需优化破乳剂。为此,基于米桑油田原油处理工艺,通过考察脱水温度和乳化次数对破乳脱水效果的影响,确定了米桑油田破乳剂的评价条件,通过电脱法和瓶试法优选复配出破乳剂HYP-243,并在米桑油田进行了现场试验。结果表明,在破乳剂质量浓度80 mg/L、温度60℃、乳化次数150次的评价条件下,烷基酚醛树脂型聚醚破乳剂YFPC-541、酚胺树脂型聚醚破乳剂YFPG-242、脂肪胺型聚醚破乳剂YFPC-140以质量比4∶1∶0.5复配制得的破乳剂HYP-243脱水速率快、终脱水量大、脱出水水质干净,破乳脱水效果优于在用破乳剂RP-968。现场试验结果表明,HYP-243加量为75 mg/L时的洗盐效果显著,在加量降低10 mg/L的条件下,水洗罐出口原油含盐均值从573 mg/L降至358 mg/L,外输原油含盐均值从36 mg/L降至22 mg/L,满足米桑油田外输原油含盐小于28 mg/L的控制指标,有利于米桑油田提产计划的顺利实施,保障米桑油田的平稳生产。 Salt content of output crude oil in Missan oilfield of Iraq is often higher than 28 mg/L stipulated in the contract,which affects the production increasing plan,and therefore the demulsifier is urgent to be optimized. Based on the crude oil treatment process in Missan oilfield,the effect of dehydration temperature and emulsification times on demulsification capability was investigated,and the evaluation conditions were determined. The optimum formula HYP-243 was developed by bottle test and electric dehydration method. Finally HYP-243 was applied in Missan oilfield. The experiment results showed that when the dosage of demulsifier was 80 mg/L,the temperature was 60℃ and the emulsification times was 150,the demulsifier HYP-243 formulated by alkylphenol formaldehyde resin demulsifer YFPC-541,phenol-amine resin demulsifier YFPG-242 and aliphatic amine demulsifier YFPC-140 in mass ratio 4∶1∶0.5,had better dehydration performance than demulsifier RP-968,such as faster dehydration rate,higher final dehydration volume and cleaner water quality. The field test results showed that better salt leaching effect was achieved when the dosage of HYP-243 was 75 mg/L. The average salt content in outer wash tank site decreased from 573 mg/L to 358 mg/L,and that in output crude oil decreased from 36 mg/L to 22 mg/L,even if the dosage was reduced by 10 mg/L. The results showed that HYP-243 could meet the requirements that the salt content of output crude was lower than 28 mg/L,which was helpful for the high and stable production.

关 键 词： 米桑油田 破乳剂 破乳脱水 掺水洗盐 原油

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