CAJ | 학술논문

应用达西公式、伯努利方程等建立了数学模型，进行压降计算的数值模拟；编写了压降计算程序，实现软件编程模拟，并针对63．5 mm（2英寸）油管和76．3 mm（3英寸）油管进行压降分析。结果表明：随着管径的增大，流速增大，沿程水头损失与局部水头损失均显著增加，最终导致压降增大；此压降若超过运行条件允许的范围，会造成压裂施工停止、油井停产、管道停输等严重事故，影响正常生产，因此对流体在环空管道中的流动阻力以及压降进行准确的计算至关重要。
응용체서공식、백노리방정등건립료수학모형，진행압강계산적수치모의；편사료압강계산정서，실현연건편정모의，병침대63．5 mm（2영촌）유관화76．3 mm（3영촌）유관진행압강분석。결과표명：수착관경적증대，류속증대，연정수두손실여국부수두손실균현저증가，최종도치압강증대；차압강약초과운행조건윤허적범위，회조성압렬시공정지、유정정산、관도정수등엄중사고，영향정상생산，인차대류체재배공관도중적류동조력이급압강진행준학적계산지관중요。
By using Darcy formula,Bernoulli equation mathematical model is established,the pres-sure drop calculation of numerical simulation.The pressure drop calculation program was written and the software programming simulation was realized.3 inches for 2 and a half inch tubing and tubing pressure drop is analyzed,with the increase of pipe diameter,flow rate increases,frictional head loss and the local head loss were significantly increased,eventually leading to the pressure drop increases.If the pressure drop exceeds the range of operating conditions,this will cause the fracturing construction stopped,the oil well production,and pipeline,such as serious accidents,af-fecting the normal production.So the fluid in the annular pipe flow resistance and pressure drop for the accurate calculation is of crucial importance.