METHOD FOR WORKING GAS AND GAS CONDENSATE FIELDS Russian patent published in 1995 - IPC

FIELD: gas wells. SUBSTANCE: method involves reducing pressure in the stratum along the intercontour regions with gas mode of use below the gas saturation pressure in layers saturated with water and gas. As a result of formed pressure difference the solved gas is transformed from the draining zones of layers saturated with water and gas into the free state. Its volume is determined by means of periodic measurements of the current values of the draining water and gas saturated layers according to relation , where ΔV_i is the current volume of the solved gas liberated into the free state at the date of taking measurements, in mln m³, Si, hi are the current dimensions of the draining zone of the layers saturated with water and gas with respect to the area Si and thickness hi at the date of taking measurements in m² and m, respectively, m_o is the open porosity of the draining zone of the water and gas saturated layers in parts of unit, G_f is the gas factor of the draining zone of the water and gas saturated layers when P_s, parameter value in m³/m³ of water, P_i, P_c are the initial and current weighted average gas saturation pressure values measurable in observation wells outside the contour, in MPa at the date of taking measurements. EFFECT: lower costs; combined working. 3 dwg