There is made a mathematical modeling of unsteady hydrodynamic processes in pipelines using the software package OLGA7. There are made the laws of pressure change in the main oil pipeline during transitional processes caused by cessations of pumping units. There are offered analytical dependences for the damping coefficient of the pressure wave in the pipeline for the cases of cessation of one, two and three sequentially operating pumps in a pumping station. Comparison of simulation results of pressure on the proposed formulas with the data of industrial experiments indicates the reliability of dependencies and their possible use for predicting the parameters of transients in oil pipelines.
Reference
1. Lur'e M.V., Matematicheskoe modelirovanie protsessov truboprovodnogo
transporta nefti, nefteproduktov i gaza (Mathematical modeling of oil and
gas pipeline transport), Moscow: Neft' i gaz Publ., 2003, 335 p.
2. Adoevskiy A.V., Modelirovanie raboty nefteprovodov, oborudovannykh sistemami sglazhivaniya voln davleniya (Simulation of oil pipelines, equipped with systems of smoothing the pressure waves): Thesis of candidate of technical science, Moscow, 2011, 170 p.
3. Moroz P.A., Polyanskaya L.V., Non-stationary processes in main oil pipeline when the pumping stations operation mode changes (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 1965, no. 5, pp. 63–68.
4. Vyazunov E.V., Moroz P.A., On overpressure in unsteady conditions in oil
pipelines operating "from the pump to pump" (In Russ.), Transport i khranenie
nefti i nefteproduktov, 1966, no. 1, pp. 12–15.
5. Vyazunov E.V., Golosovker B.I., Golosovker V.I., Study of transient processes in pipeline (In Russ.), Transport i khranenie nefti i nefteproduktov, 1970, no. 10, pp. 3–6.
6. Perevoshchikov S.I., Determination of pressure changes in pipelines under
unsteady fluid flow(In Russ.), Transport i khranenie nefti i nefteproduktov, 1981, no. 2, pp. 6–9.
7. Seredyuk M.D., Grigorskiy S.Ya., Experimental studies of transient processes in the main oil pipelines caused by stops of pump units (In Russ.), Nauchnyy vestnik Ivano-Frankovskogo natsional'nogo tekhnicheskogo universiteta nefti i gaza, 2013, no. 2(35), pp. 16–29.
