| 摘要 |
oil production. SUBSTANCE: invention refers to operations related to increased productivity of wells, it provides for enhanced coverage of deposit by action which leads to raised oil output. When oil field is exploited working agent is pumped through injection wells and oil is extracted through production wells. At least one well is abandoned. Part of casing string is liquidated at different levels of well with formation of cavities. Side filtration conduits are run by hydraulic jet perforation starting from lower level of well in points of cavities. Side filtration conduits have small diameter and inclined profile. Several side filtration conduits arranged at different azimuthal angles are made on one level of well. Filters-columns are pushed into side filtration conduits. Intervals of formation of multilevel shafts are reinforced by installation of profiled floors which are perforated. EFFECT: enhanced coverage of oil deposit by action, raised oil output. 2 cl, 1 dwg |
