论文部分内容阅读
本文根据室内试验对沈北高凝原油的一般物性、粘温特性、流变特性和流动特性进行论述。提出用—10原油和胜—10与安—74混合原油当混合比为9:1～4:6,原油的粘温变化规律用μ=exp(A+B·t+C·t~2)表示;安—74和混合油的混合比为8:7～1:9,混合原油粘温变化规律用μ=A·exp(B/T)表示;胜—10、安—74及混合油剪切应力与剪切速率的变化规律用R=R_0+K·D_r~n表示。并建议在高于凝点5℃以上温度输送沈北高凝原油;对输送温度较高和凝点较高的管道应保温,以减少热量损失和防止凝管事故的发生;胜—10、安—74原油最佳混合比为8:2,应以此比例下输送。
In this paper, based on laboratory tests of Shenbei hypercoagulable crude oil general properties, viscosity-temperature characteristics, rheological properties and flow characteristics are discussed. It is proposed that the change law of the viscosity of crude oil is expressed as μ = exp (A + B · t + C · t ~ 2) when the mixing ratio is between 9: 1 and 4: 6, Said that the mixing ratio of An-74 and mixed oil is 8: 7-1: 9, the viscosity change of mixed crude oil is expressed by μ = A · exp (B / T); Sheng -10, Ann-74 and mixed oil shears The law of shear stress and shear rate is expressed as R = R_0 + K · D_r ~ n. It is recommended to transport Shenbei hypercoagulable crude oil at a temperature above 5 ℃ above the condensing point. The pipeline with higher delivery temperature and higher freezing point should be insulated to reduce heat loss and prevent coagulation accidents. Sheng-10 and An-74 Crude oil best mixing ratio of 8: 2, should be transported in this ratio.