共查询到17条相似文献,搜索用时 109 毫秒
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针对西部某油田含CO2原油集输管道腐蚀现象严重的问题,以不饱和脂肪酸、三乙烯四胺和氯苯甲烷为原料合成了一种咪唑啉型缓蚀剂,并将咪唑啉型缓蚀剂与非离子表面活性剂进行复配研制出一种新型抗CO2缓蚀剂KW-101.考察了含水率、温度、流速以及CO2分压对缓蚀率的影响,室内试验结果表明:随着含水率、温度、流速和CO2分压的增大... 相似文献
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《应用化工》2016,(8)
利用苯甲酰氯与咪唑啉中间体反应,合成了一种新型原油集输用苯甲酰胺-乙基-油酸咪唑啉缓蚀剂YSHSJ-2。利用表面张力仪研究了合成的缓蚀剂YSHSJ-2表面性能,利用失重法研究了缓蚀剂YSHSJ-2缓蚀效果的影响因素。结果表明,合成的缓蚀剂的cmc=48.87 g/L,γ_(cmc)=30.25 m N/m,θ=51.25°,Γ_m=504.54×10~(-8)mol/m~2,在30℃,4%HCl下,缓蚀剂浓度为100 mg/L时,缓蚀率高达87.69%。在相同的缓蚀剂浓度下,温度越高、盐酸浓度越大,缓蚀率逐渐变小,缓蚀效果变差。合成的缓蚀剂YSHSJ-2可以很好的吸附在集输设备及管道的表面,可有效地缓解集输设备及管道的腐蚀速率。 相似文献
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《应用化工》2022,(8)
利用苯甲酰氯与咪唑啉中间体反应,合成了一种新型原油集输用苯甲酰胺-乙基-油酸咪唑啉缓蚀剂YSHSJ-2。利用表面张力仪研究了合成的缓蚀剂YSHSJ-2表面性能,利用失重法研究了缓蚀剂YSHSJ-2缓蚀效果的影响因素。结果表明,合成的缓蚀剂的cmc=48.87 g/L,γ_(cmc)=30.25 m N/m,θ=51.25°,Γ_m=504.54×10(-8)mol/m(-8)mol/m2,在30℃,4%HCl下,缓蚀剂浓度为100 mg/L时,缓蚀率高达87.69%。在相同的缓蚀剂浓度下,温度越高、盐酸浓度越大,缓蚀率逐渐变小,缓蚀效果变差。合成的缓蚀剂YSHSJ-2可以很好的吸附在集输设备及管道的表面,可有效地缓解集输设备及管道的腐蚀速率。 相似文献
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为了缓解CO2腐蚀对油气田井下管柱及地面管线设备造成的损害,以不饱和脂肪酸和二乙烯三胺为单体合成了一种新型高效抗CO2缓蚀剂HHS-13,以缓蚀率为评价指标对其合成工艺条件进行了优化,并评价了缓蚀剂H HS-13加量、腐蚀时间、CO2分压对缓蚀性能的影响.结果表明,新型高效抗CO2缓蚀剂H HS-13的最佳合成工艺条件... 相似文献
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针对高矿化度条件下油田污水集输系统腐蚀特点,利用松香、油酸、羟乙基乙二胺及氯乙酸钠,通过酰胺化、环化及季铵化反应,加入乙二胺四亚甲基膦酸钠,研制出耐高矿化度缓蚀剂SDH-1。采用红外、气质联谱对缓蚀剂SDH-1进行了结构表征,评价了其对20#钢的缓蚀性能,考察了其阻垢性能、破乳性能;通过等温吸附行为研究和极化曲线测定,分析了缓蚀机理。结果表明,缓蚀剂SDH-1浓度为30 mg/L时,在矿化度为243063 mg/L地层水体系中缓蚀率达90.47%,阻垢率为85.96%,分水率为96.3%;缓蚀剂在金属表面的吸附符合Langmuir吸附等温式,是一种以抑制阳极腐蚀为主的复合型缓蚀剂。与市售缓蚀剂相比,缓蚀剂SDH-1缓蚀效率提高12%以上,可有效减缓高矿化度条件下管道钢材的腐蚀速率。 相似文献
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中原油田集输管道的内腐蚀及腐蚀防护技术的应用研究 总被引:1,自引:0,他引:1
通过对集输蕾线的腐蚀调查及腐蚀因素分析,搞清了集输管线腐蚀的主要原因及主要影响因素,在此基础上研览应用了端点加药技术及管道耐蚀涂层及衬里技术,开发应用了一种针对油田污水腐蚀的HF耐油田污水腐蚀涂料,并取得了较好的防腐效果,有效遏制了集输营线的腐蚀。 相似文献
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降凝降黏剂已成为钻高难度的高温深井、大斜度定向井、水平井和各种复杂地层的重要手段,并且还可广泛地用作解卡液、射孔完井液、修井液和取心液等。由于稠油的黏度以及凝点低,防止在开采过程中出现困难,降凝降黏剂的应用需要进行一定的关注,解决其发展困难。 相似文献
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Different methods of reducing the viscosity of heavy crude oil to enhance the flow properties were investigated. Experimental measurements were conducted using RheoStress RS100 from Haake. Several factors such as shear rate, temperature and light oil concentration on the viscosity behavior have been studied. This study shows that the blending of the heavy crude oil with a limited amount of lighter crude oil provided better performance than the other alternatives. Experimental measurements in terms of shear stress τ-shear rate and yield stress τ0 were conducted on the mixture of heavy crude oil-light crude oil (O-light). The results showed a significant viscosity reduction of 375 mPa s at a room temperature of 25 °C. This study shows that the heavy crude oil required a yield stress of 0.7 Pa, whereas no yield stress was reported for the heavy crude oil-light crude oil mixture. 相似文献
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A heavy crude oil was characterized in view of the recent commercial exploitation of Doba oilfield in landlocked Chad from where the crude oil is extracted and expected to be routed to the Atlantic shore through pipeline transportation. The elemental composition of Doba feedstocks is 86.25% C, 12.10% H, 0.25% N, 0.14% S and 1.16% O. Atmospheric distillation indicated an initial boiling point at 85 °C, a 10 vol% fraction distilling before 250 °C and an onset of crude thermal cracking at 300 °C. Crude API gravity is 18.8° API, corresponding to a specific gravity of 0.94 at 15.6 °C. The Doba crude oil was found to exhibit non-elastic purely viscous Newtonian behavior over the temperature range typical of crude transportation by pipeline. The crude was fractionated into 97.4% maltenes (n-pentane solubles), 1.8% asphaltenes (n-pentane insolubles), and 0.1% toluene insolubles. The maltenes were subsequently split into four sub-fractions: 45.0±1.2% saturates (MF1), 11.0±0.3% mono and diaromatics (MF2), 26.8±1.2% polyaromatics (MF3), and 12.8±0.8% polars (MF4). FT-IR characterization and proton nuclear magnetic resonance identification of the maltenic and asphaltenic fractions provided evidence of the chemical nature of the different fractions. The high values of the kinematic viscosity of crude oil (184.4cSt at 50 °C) and deasphalted crude oil (152.4cSt at 50 °C) suggest that partially upgrading the oil would be necessary to comply with the viscosity specifications recommended for crude transportation by pipeline. 相似文献