摘要
针对渤海某油田原油黏度和含气量高、原油系统停留时间短、脱气脱水效果差的问题,通过室内脱水实验研究了溶解气对原油脱水效果的影响,考察了自制有机硅消泡剂的消泡性能及其与破乳剂的协同脱水效果。结果表明,溶解气析出形成气泡阻碍了原油脱水,投加消泡剂能够快速消除原油中的气泡,进而提升破乳剂的脱水效果。现场实验结果显示,在二级分离器入口加注20 mg/L该消泡剂后,二级分离器油室液位大幅降低,系统各级设备出口原油含水量均下降,外输原油中水的体积分数从2%降至0.8%,达到现场原油外输标准。
In order to solve the problems of poor degassing and dehydration caused by high viscosity,high gas content,and short treatment in a Bohai oilfield,the effect of dissolved gas on dehydration of crude oil was studied by dehydration test in the laboratory.The defoaming performance and its synergetic dehydration of the self-made silicone defoamer were investigated.The results show that the bubbles formed by the dissolved gas hinder the dehydration.The addition of defoamer eliminates the bubbles in the crude oil quickly,thereby improving the dehydration effect of the demulsifier.It is also shown that by adding 20 mg/L of the silicone defoamer into the secondary separator,the liquid level of oil chamber of the separator reduces greatly,the water content of the crude oil at all levels of equipment in the system is reduced,and the volume fraction of water in transporting crude oil has been reduced from 2%to 0.8%,which meets the export standards of on-site crude oil.
作者
曾璐明
胡廷
刘耀军
徐超
王晶
ZENG Lu-ming;HU Ting;LIU Yao-jun;XU Chao;WANG Jing(CNOOC Ener-tech Oilfield Chemical Co.,Ltd.,Tianjin 300451;China National Offshore Oil International Co.,Ltd.,Tianjin 300452)
出处
《有机硅材料》
CAS
2020年第3期47-50,共4页
Silicone Material
关键词
有机硅
消泡剂
溶解气
协同脱水
silicone
defoamer
dissolved gas
synergistic dehydration
作者简介
曾璐明(1984-),男,工程师,主要从事油田化学品的研发和现场应用工作。E-mail:zenglm@cnooc.com.cn。
