發(fā)布時(shí)間：2019-04-21 06:21

【摘要】：采用脂肪醇聚氧乙烯醚、Na OH、氯乙酸、醇和混合芳烴為原料,制備了一種高效復(fù)合降黏劑SDG-3。考察了其分散原油重組分能力、界面活性、乳化性能、降黏性能、耐溫耐鹽性和破乳性能。結(jié)果表明:SDG-3能分散超稠油中重組分,質(zhì)量分?jǐn)?shù)1%的SDG-3在不含水條件下使原油黏度從181 000 m Pa·s降低至81 989 m Pa·s,降低了54.7%;使地層水-超稠油的界面張力由22.00 m N/m降低至0.32 m N/m,對(duì)超稠油乳化效果優(yōu)于常規(guī)水溶性降黏劑,形成的O/W乳狀液平均粒徑為2.5μm,對(duì)委內(nèi)瑞拉、中海油、塔河超稠油降黏率均達(dá)到99.0%以上,優(yōu)于常規(guī)油溶性降黏劑的降黏率(72.6%),耐鹽度達(dá)2.2×105mg/L,耐高溫達(dá)140℃,與油田破乳劑配伍性好。在塔河油田進(jìn)行現(xiàn)場(chǎng)實(shí)驗(yàn)期間,日平均節(jié)約稀油率66.6%,平均提高稠油采收率14.4%。
[Abstract]:Using fatty alcohol polyoxyethylene ether, Na OH, chloroacetic acid, alcohol and mixed aromatic hydrocarbon as raw materials, a kind of high efficiency compound deviscosity agent SDG-3. was prepared. The reassembly capacity, interfacial activity, emulsifying property, viscosity reducing property, temperature and salt resistance and demulsifying property of dispersed crude oil were investigated. The results show that SDG-3 can disperse the recombination fraction in super heavy oil. The viscosity of crude oil can be reduced from 181,000 m Pa 路s to 81 989 m Pa 路s with 1% SDG-3 in water-free condition, which is reduced by 54.7%. The interfacial tension between formation water and super heavy oil is reduced from 22.00 m / m to 0.32 m / m, and the emulsifying effect of super heavy oil is better than that of conventional water soluble viscosity reducing agent. The average particle size of O / W emulsion is 2.5 渭 m for Venezuela, and the interfacial tension of formation water and super heavy oil is reduced from 22.00 m / m to 0.32 m / m. The viscosity reduction rate of CNOOC and Tahe super heavy oil is more than 99.0%, which is better than that of conventional oil soluble viscosity reducer (72.6%). The salinity resistance is 2.2 脳 10 5 mg / L, and the high temperature resistance is 140 鈩，

本文編號(hào)：2461924