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U形振动管法测定原油密度的影响因素 被引量:6

Influencing Factors for Determination of Crude Oil Density by U-shaped Vibrating Tube Method
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摘要 在采用U形振动管法测定原油密度时,原油黏度会对密度测定结果产生影响,导致原油贸易结算产生偏差。笔者主要分析了U形振动管法测试原油密度的原理和标准,并对不同种类原油黏度对于密度测定结果的影响进行了研究。结果表明:在使用不带黏度修正功能的数字密度计测试时,应注意严格按标准要求提高测试温度,减少黏度的影响;在使用带黏度修正功能的数字密度计测试时,应注意按仪器厂商说明书校准仪器,使测定结果更加合理。 When measuring the density of crude oil by U-shaped vibrating tube method,the crude oil viscosity would affect the density test results,which would lead to the deviation of crude oil trade settlement.The principle and standard of U-shaped vibrating tube method measuring crude oil density were introduced,and the effects of viscosity of different types of crude oil on the density test results were studied.The results show that when using the digital density meter without viscosity correction function,it should be strictly in accordance with the requirements of the standard,improve the test temperature and reduce the effects of viscosity.When using the digital density meter with viscosity correction function,it should pay attention to instrument calibration according to the manufacturer's specifications to make test results more reasonable.
出处 《理化检验(物理分册)》 CAS 2016年第4期253-256,共4页 Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词 原油 U形振动管法 密度 黏度 修正 crude oil U-shaped vibrating tube density viscosity correction
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  • 1ISO 3696:1987,Water for Analytical Laboratory Use-Specification and Test Methods[S].
  • 2IP 1995,Standard Methods for Analysis and Testing of Petroleum and Related Products,Appendix G Density of Water;Appendix H Density of ambient air[S].
  • 3GB/T 13377-1992,原油和液体或固体石油产品密度或相对密度测定法(毛细管塞比重瓶和带刻度双毛细管比重瓶法)[S].
  • 4ASTM D 4052-2002,Standard Test Method for Density and Relative Density of Liquids by Digital Density Meter[S].
  • 5ASTM D 5002-1999,Standard Test Method for Density and Relative Density of Crude Oils by Digital Density Analyzer[S].
  • 6GB/T 1885-1998,石油计量表:表59A 原油标准密度表[S].
  • 7API MPMS 11.1,Table 53A-Generalized Crude Oils.Correction of Observed Density to Density at 15℃[S].
  • 8GB/T 1885-1998,石油计量表:表E2原油20℃密度到15℃密度换算表[S].
  • 9应林初.数字式密度仪测定凝析油密度[J].石油与天然气化工,2000,29(3):149-150. 被引量:3

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