The analysis of influence of bottomhole pressure decrease under saturation pressure on the oil recovery

Authors: L.N. Nazarova, E.V. Nechaeva (Gubkin Russian State University of Oil and Gas, RF, Moscow)
E-mail: elenan83@mail.ru
Key words: saturation pressure, bottomhole pressure, dissolved gas dry, mobility
ratio, filtration zone, compositional three-dimensional hydrodynamic modeling, waterflooding, oil viscosity.

The mobility ratio of expulsed oil and water is used for an estimation of efficiency of well performance at bottomhole pressure under saturation pressure. The estimation of influence of decrease of bottomhole pressure under saturation pressure upon wells oil rate dynamics is carried out. The quantitative estimation of this influence is given at various geologo-physical conditions such, as permeability and viscosity.

References
1. Nechaeva E.V., Gazovaya promyshlennost' – GAS Industry of Russia, 2009,
no. 11, pp. 41 – 42.
2. Hall H.N., How to analyze waterflood injection well performance, World Oil,
1963, Oct., pp. 128 – 130.
3. Mishchenko I.T., Sagdiev R.F., Neftyanoe khozyaystvo – Oil Industry, 2003,
no. 4, pp. 104-106.


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