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Zastosowanie metody bilansu masy w eksploatacji połączonych złóż gazu

Blicharski J., Rybicki C.

Wiadomości Naftowe i Gazownicze

2014

R. 17, Nr 2 (190)

4--8

The method of the mass-balance is one of basic tools of the reservoir engineering permitting the analysis and forecasting of the reservoir work at the relatively little of data from the production process. In case of natural gas reservoir the use of this method moves often to the test of the variability of the rate p/z in the function of the cumulative production of gas Gp. For volumetric reservoir being characterized with the constant pore volume and good petro physical properties of the rock this reltionship has a linear character, a source of energy is expansion of gas. In turn of the nonlinearity of the diagram p/z vs Gp is bounded with the existence of the external source of energy in reservoir. Most often the maintenance of the reservoir pressure follows in consequence of the water supply from behind the contour. This aspect is vexed in the literature with the use of different mathematical models describing the preservation of the water-bearing zone. The nevertheless similar effect can take place in case of the inflow of gas to produced reservoir ( the main reservoir) from other reservoir so called the neighbouring reservoir called in the further part of the article feeding reservoir, being in contact with the main reservoir across the zone with the low permeability. Then such system of reservoirs is called compartmented reservoirs. The paper presents some results of application the mass balance method to the chosen reservoir from the Carpathian zone.