原油动态计量的误差分析与减少误差的方法

原油动态计量是油量计量的重要方式，要做到准确计量就应尽量减少误差，根据误差理论对油量动态计量的误差进行了分析，得出在油量的动态计量中，密度、含水率及流量的误差是油量计量的主要误差源。要减少油量计量误差，就必须提高流量计、温度计、含水仪、密度计等仪表的准确度，减少所取油样的密度与含水率与某段计量时间内的非代表性平均值所引起的误差，用流量计系数来修正流量计的示值。提高提高油样代表性的具体方法是动态取样

Error Analysis and Error Reducing Measures for Dynamic Metering of Crude Oil.

Dynamic metering is an important way to measure oil flow,and errors shall be reduced as much as possible to achieve accurate measurement. Analysis on the errors in dynamic metering is made based on the theory of error,and concludes that the main contributors to the errors come from densimeter,water cut meter as well as flow meter. Error reduction can be achieved by improving the precision of flow meter, thermometer, water cut meter and densimeter,by reducing sample oil's deviation,and by correcting flow meter with specific factors. It is suggested to adopt dynamic sampling and phyical examination,to realize continuous on line measurement of oil density and water cut,to choose proper sampling interval and to calibrate the flow meter on line.