基线选取对DSC法测试原油含蜡量的影响

发布时间：2018-04-09 00:00

本文选题：原油　切入点：含蜡量　出处：《油气储运》2017年07期

【摘要】：差示扫描量热法(Differential Scanning Calorimetry,DSC)中基线的选取对原油析蜡潜热及含蜡量的测试计算结果有较大影响。针对目前基线选取不统一的问题,采用DSC法对大庆油田两个采油区块的原油进行测试计算,获得了原油降温过程的DSC曲线。分别采用两种常用的基线选取方法对两油样测得的DSC曲线进行分析并计算含蜡量。与氧化铝吸附法测得的含蜡量的对比结果表明:采用内插基线法处理测试结果时,两油样的相对误差分别为4.7%和-3.1%;采用反向延长线法处理测试结果时,两油样的相对误差分别为52.6%和34.7%。因此,利用DSC法测量原油析蜡潜热及含蜡量时,采用反向延长线作基线的测试计算结果误差过大,宜采用内插基线法确定基线。
[Abstract]:Differential scanning calorimetry (Differential Scanning Calorimetry, DSC) were selected in the baseline have great influence on test result of crude oil heat and wax content. Aiming at the baseline selection is not uniform, by DSC method in Daqing oilfield two crude oil block test calculation, obtain the curve of crude oil cooling the process of the DSC curve. The two commonly used baseline selection method measured on two oil samples of DSC were analyzed and calculated. The wax content measured with alumina adsorption method comparing the wax content of the results show that the interpolation method of baseline processing test results, the relative error of two oil samples was 4.7% and -3.1% respectively; the reverse extension method to deal with the test results, the relative error of two oil samples were 52.6% and 34.7%. respectively. Therefore, using the method of DSC measurement of crude oil heat and wax content, using the reverse extension line as base line measurement The error of the test results is too large, and the baseline method should be used to determine the baseline.

【作者单位】：东北石油大学土木建筑工程学院;东北石油大学防灾减灾及防护工程黑龙江省高校重点实验室;东北石油大学石油工程学院;
【基金】：国家自然科学基金重点项目“含蜡原油管道安全经济输送的基础问题研究”,51534004 黑龙江省自然基金重点项目“胶凝原油水力悬浮管输特性及油田矿场适应性研究”,ZD2015011 黑龙江省普通高等学校新世纪优秀人才项目“水-胶凝原油两相流体系的流动特性和流动规律研究”,1253-NECT-003
【分类号】：TE622.1

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