摘要
从HRB系列的7种生物破乳剂中选出了对纯梁含水原油脱水效果最好的生物破乳剂HRB 4。HRB 4为含微生物细胞体≥10%、密度0.95～1.0g/cm3的悬浮液,加量为100mg/L时对纯梁首站、纯西站、正理庄站含水原油的90min脱水率分别为99.0%(55℃)、95.0%(50℃)、91.1%(50℃),均高于相同加量的现用油溶性化学破乳剂BSH 06的脱水率,而且脱出污水的含油量降低27%～49%。加量为80、90、200mg/L时,较难脱水的正理庄原油55℃、90min脱水率分别为69.4%、89.3%、95.2%。在日处理液量2×103m3、日输油800t、输油温度50℃、使用BSH 06破乳的正理庄输油站进行了为期21天的HRB 4应用试验,HRB 4在加热炉前加入,分阶段将加量从120mg/L降至100mg/L再降至87.5mg/L,分离出的原油含水维持在1.5%左右,输油管线回压由0.5MPa降至0.4MPa,分离出的污水含油平均由526mg/L降至170mg/L。HRB 4已在纯梁采油厂各站普遍应用,HRB系列生物破乳剂已推广至胜利油田其他采油厂。讨论了破乳机理。图3表5参3。
Biodemulsifier HRB-4 is selected for dehydrating watery crude oils of Chunliang, Shengli, from 7 biological reagents of HRB series. HRB-4 is an aqueous suspension containing ≥10% bacterial cells and of density 0.95—1.0 g/cm^3. For watery mixed crude oils of head station (at 55℃), Chunxi station (at 50℃), and Zhenglizhuang station (at 50℃) of Chunliang gathering/treating/transporting system, 90 min dehydrating rates of 99.0%, 95.0%, and 91.1% are reached, respectively, with HRB-4 of dosage 100 mg/L, being higher than that with the same dosage of oil-soluble chemical demulsifier BSH-06, and the oil content in separated waters is reduced by 27—49%. For hard handling Zhenglizhuang crude oil, in particular, the dehydrating rate at 55℃ in 90 min is of 69.4%, 89.3%, and 95.2% with HRB-4 of dosage 80,90, and 200 mg/L, respectively. A field trial on HRB-4 in 21 days is conducted at Zhenglizhuang station where 2×10~3 m^3 of produced fluids is treated by BSH-06 and 800 t of crude oil is separated and transported at 50℃ per day. With HRB-4 introduced instead into the fluids before heating in dosage stepwise decreased from 120 to 100 and to 87.5% mg/L, the water cut of the crude separated is kept pa. 1.5%, the oil content of the wastewater separated is reduced from 526 to 170 mg/L in average and the back pressure in oil transporting pipeline is reduced from 0.5 to 0.4 MPa. At present HRB-4 has been put into use in Chunliang and HRB series biodemulsifiers?—?in other oil production factories of Shengli. The dehydrating mechanisms by bacterial cells are discussed.
出处
《油田化学》
CAS
CSCD
北大核心
2004年第1期42-44,60,共4页
Oilfield Chemistry
关键词
生物破乳剂
化学破乳剂
脱水率
含油量
细菌细胞
温度
沉降时间
biodemulsifier
bacterial cells
demulsification/dehydration
watery crude oils
Zhengizhuang gathering/transporting station
Chunliang oil fields in Shengli
