PROCEDURE FOR DEVELOPMENT OF OIL DEPOSITS Russian patent published in 2014 - IPC E21B49/00 G01V11/00 

FIELD: oil and gas industry.

SUBSTANCE: method includes drilling of wells, performance of field research and geophysical well logging (GWL), laboratory test to define properties of the rock, GWL interpretation, and segmentation of the deposit into sections with distinguished geological and filtering properties and plotting of a chart with identification of reservoir rocks with high permeability. From wildcats and producing wells core samples are taken; water content of the core solid phase is measured additionally for them and the following values are determined - relative amplitude of natural electric potentials, ratio of water content solid phase towards relative amplitude of natural electric potentials, i.e. lithofacies parameters are determined. Then the chart of lithofacies changes is plotted within territory of hydrocarbon deposit. Isolines of lithofacies boundary values are plotted in the chart and zones of rock with high or low filtering potential are determined against these isolines. At that in the zones with rocks having high filtering potential horizontal drilling is carried out with further creation of even oil displacement front and in the zones with rocks having low filtering potential in-depth cumulative perforation oriented in compliance with rock stress vector is carried out with subsequent hydraulic fracturing of the formation ensuring network of cracks with preset length.

EFFECT: improving reliability and efficiency of oil deposit development.

8 cl, 2 dwg