METHOD OF PIPE LINE TRANSPORTATION OF HYDROCARBON FLUID Russian patent published in 2002 - IPC

FIELD: oil and gas industries; pipe line transportation of hydrocarbon fluids, such as oil, petroleum products and gas condensate. SUBSTANCE: proposed method consists in delivery of additive of highmolecular carbon-chain compounds at molecular mass M = 0,3-10•10⁶, into turbulent flow of hydrocarbon fluid; amount of additive is selected depending on condition of attaining rate of flow of fluid in boundary area of pipe line ensuring washing-off contaminating particles and carrying them to filtering units which is described by the following system of equations: U_wash = 1,3•A•d-Bdp

, , , where , , X = (28•α)¹⁰; Y = 0,00043•C^1,168•ε^-0,662, U_wash is rate of washing-off contaminating particles; A = 45.2 and B = 0.75 are coefficients; d_dp is diameter of particle, mcm; U is average local velocity, m/s; V is average velocity, m/s; λ_f is coefficient of hydraulic resistance at flow of fluid with additive; R is pipe line radius, m; Re is Reynolds number; ε, k are relative and absolute equivalent roughness of pipe, m; D is inner diameter of pipe line, m and C is concentration of additive, g/t. EFFECT: possibility of washing-out contaminating particles and carrying them to filtering units with no increase in average rate of pumping. 1 dwg