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Investigation of the interaction of reservoir sections with different permeability in depleted gas field

Kondrat O.

AGH Drilling, Oil, Gas

2015

Vol. 32, no. 2

325--333

For many gas fields, including Ukraine, which are being developed in gas drive, there is a deviation of graphics rectilinear dependence of reduced average reservoir pressure from the theoretical straight line dependence. The reason for this may be the existence of imperfectly drained zones, zones with low-permeable reservoirs within the limits of the field. They include peripheral areas and separate areas in the field. These zones are being gradually involved to the development, are characterized by high reservoir pressure and gas from them flows into the recovery zone with production wells. According to the results of conducted researches the mathematical model of interaction in the gas field reservoir areas with different degrees of permeability and drainage as a result of gas cross-flow between them was proposed. Applying a suggested mathematical model the impact of interaction of different permeable zones in the macroheterogeneity field on the shape of the dependence of reduced average reservoir pressure from cumulative gas production was estimated and the opportunity to identify the presence outbalance reserves in the field noninvolved into the development was found out. Layers with outbalance gas reserves can be considered as the perspective zones for development.

Improvement of high-viscosity oil production technology

Kondrat O.

AGH Drilling, Oil, Gas

2014

Vol. 31, no. 1

73--89

According to the results of the laboratory and analytical studies and research-and-industrial operations, it is established the efficiency of complex use of thermal methods, hydrocarbon solvents and surfactants for the effect on high-viscosity oil and it is suggested the technology for high-viscosity oil wells stimulation.

Study of methods of hydrocarbon recovery enhancement from the depleted oil fields

Kondrat O.

AGH Drilling, Oil, Gas

2013

Vol. 30, no. 1

127--143

The article deals with the optimization of existing development system and oil recovery factor enhancement through the involvement to the development of productive bed areas with significant remaining oil reserves by using the hydrodynamic models of filtration processes of formation fluids in heterogeneous beds on the example of the sandstone deposit of the Boryslav field. The calculations for the different variants development in order to select the most rational one of the further development of a field were made. The task of the optimization was performed according to the criteria of the highest value of oil recovery factor.