INCREASING OF WELL INFILL DRILLING EFFICIENCY Russian patent published in 2014 - IPC E21B43/20 

FIELD: oil-and-gas industry.

SUBSTANCE: maps of unworked oil deposits and/or maps of current oil saturation and maps of distribution of current seam pressure are plotted proceeding from the data of well operation and analysis. Location and type of infilling wells are selected proceeding from complex analysis of said maps of unworked oil deposits and/or maps of current oil saturation and maps of distribution of current seam pressure. Location of operating infilling wells is selected in zones of localisation of unworked oil deposits with current seam pressure over 85-90% of initial value. Location of operating injection wells is selected in zones of localisation of unworked oil deposits with current seam pressure under 85-90% of initial value. Efficiency of drilling infilling wells is evaluated proceeding from predictive process indices for the entire deposit or its part including all designed infilling wells and adjacent drilled wells with the help of 3D geological production model of the deposit.

EFFECT: higher yield, more stable dynamics of oil production at lower costs.

1 ex, 7 dwg