The Hydraulic And Thermal Design Calculation For The Circular Pipelines In Oil Field

Conventional calculation of the hydraulic thermal design for oil-gas mixed transport mainly uses the simple formula, that is to say, adopting the estimation methods to determine the hydraulic friction coefficient and the total thermal conduction coefficient and calculate the pressure drop and the temperature drop in oil translation pipe. However, error can be caused because of empirical estimation and the simple consideration of the circumstance factors. In order to overcome this shortcomings, in this paper, the Beggs-Brill methods that has the advance of higher calculation precision and suits for the calculation of the inclination pipe are adopted. In the aspect of the thermal design calculation, the homogeneous phase models are adopted, that is to use average weighted mass methods to calculate the specific heat capacity of three phase states of oil, gas, and water, the effect of the inclination of the pipe, joule-thompson effect and the hydraulic drop are considered in temperature drop formula. The optimization model adopted in designation of the thickness of the heat insulation layer of the translation pipe can satisfy the requirements of the temperature drop and the press drop in translation pipe, and guarantee the optimal economic effect. Meanwhile, the multiplication amendment course in designation calculation can be avoided.This paper takes the advance of the mixture transports pipe hydraulic thermal designation calculation theory to create a suitable method of the oil field ground production circle pipe hydraulic thermal designation calculation. On the base of the presented software system, the corresponding computer software is compiled, perfected the presented hydraulic thermal calculation system. This software system not only can perform the single pipe forward and inversion hydraulic thermal designation calculation, but also can perform the oil field ground production circle pipe hydraulic thermal optimize designation calculation and made the range of the application widely. This software system relieves the work intensity for the program device people greatly, enhances the science and the accretion of the designation calculation, and is favorable to enhance the modernization level of the oil field ground pipe system designation calculation and administration.