METHOD FOR OIL DEPOSIT DEVELOPMENT WITH HORIZONTAL WELLS WITH MULTI-STAGE FRACING

摘要

FIELD: oil and gas industry.;SUBSTANCE: invention relates to oil industry and can be applied to development of multi-layer oil deposits, represented by heterogeneous permeability pods. Method comprises steps of drilling an extracting horizontal well with a multifrac, after which geophysical studies are carried out according to the logging-impact-logging scheme. Actual geometry of the created cracks is calculated. Based on the obtained results of geophysical studies, a region of well drainage with multifrac is calculated and a preliminary grid is chosen for drilling subsequent two horizontal wells. Drilling of two parallel-located production wells relatively to the first one on a pre-selected grid, with analysis of interference of horizontal wells with multifrac during their simultaneous operation and evaluation of the optimality of the selected grid are carried out. Entire oil reservoir according to the well + multifrac technology for an optimal grid density of wells is designed and drilled.;EFFECT: technical result is higher efficiency of oil deposit development.;6 cl, 1 dwg