原油密度换算说明.doc

原油密度换算说明一、 公式P20=P视+（T-20）rPt=P20-(t-20)d式中：P2020下的原油标准密度P视T温度下测得的密度，即比重计上的读数T实测温度r温度补正系数，查表-1得Ptt下的原油标准密度d温度系数，查表-2得t所要换算的某一温度二、 举例，测得某原油的密度是0.7625,温度是30,求20和50的原油标准密度.解:查表-1 得r=0.000818 注:查表-1时,”视”比重一栏是范围,如0.7625,查0.76000.7699行P20=0.7625+(30-20)0.000818=0.7707查表-2 得d=0.00078注:查表-2时,P20一栏是范围,如0.7707查0.7641-0.7707行 P50= P20-(50-20)d=0.7707-(50-20) 0.00078=0.7467表-1 石油产品比重的平均温度补正数表 “视”比重补正数“视”比重补正数0.6900-0.69990.0009100.8500-0.85990.0006990.7000-0.70990.0008970.8600-0.86990.0006860.7100-0.71990.0008840.8700-0.87990.0006730.7200-0.72990.0008700.8800-0.88990.0006600.7300-0.73990.0008570.8900-0.89990.0006470.7400-0.74990.0008440.9000-0.90990.0006330.7500-0.75990.0008310.9100-0.91990.0006200.7600-0.76990.0008180.9200-0.92990.0006070.7700-0.77990.0008050.9300-0.93990.0005940.7800-0.78990.0007920.9400-0.94990.0005810.7900-0.79990.0007780.9500-0.95990.0005670.8000-0.80990.0007650.9600-0.96990.0005540.8100-0.81990.0007520.9700-0.97990.0005410.8200-0.82990.0007380.9800-0.98990.0005280.8300-0.83990.0007250.9900-1.00000.0005150.8400-0.84990.000712 石油产品“视”比重换算为实际比重的补正数表,本表包括用韦氏天平及比重瓶在实验温度下所测定的石油产品.表-2 石油密度温度系数表P20dP20d0.59930.60420.001070.73810.74440.000820.60430.60910.001060.74450.75080.000810.60920.61420.001050.75090.75730.000800.61430.61930.001040.75740.76400.000790.61940.62440.001030.76410.77070.000780.62450.62950.001020.77080.77760.000770.62960.63470.001010.77770.78460.000760.63480.64000.001000.78470.79160.000750.64010.64530.000990.79170.79870.000740.64540.65060.000980.79880.80160.000730.65070.65600.000970.80620.81350.000720.65610.66150.000960.81360.82110.000710.66160.66700.000950.82120.82900.000700.6671-0.67260.000940.82910.83700.000690.67270.67820.000930.83710.84500.000680.67830.68390.000920.84510.85330.000670.68400.68960.000910.85340.86180.000660.68970.69540.000900.86190.87040.000650.69550.70130.000890.87050.87920.000640.70140.70720.000880.87930.88830.000630.70730.71320.000870.88840.89760.000620.71330.71930.000860.89760.90690.000610.71940.72550.000850.90700.91650.000600.72560.73170.000840.91660.