METHOD OF DEVELOPMENT OF ISOLATED LITHOLOGICALLY SCREENED OIL-SATURATED LENS Russian patent published in 2013 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: according to the method lens and productive formation below lens are opened with a single well. A set of geologic-geophysical, hydrodynamic, core, fluidal PVT surveys is performed, in particular, borders are determined and lens profile is analysed. 3D geologic and 3D hydrodynamic models of oil-saturated lens and productive formation below it are created. 3D hydrodynamic model is adapted to results of all the surveys. Perforation holes are made in the central part of lens, through which by means of forcing of easily filtering plugging composition a barrier is formed preventing premature flooding of well and increasing of lens volumetric efficiency by forcing out. Well is perforated in lens bottom part and in interval of productive formation to provide overflow of fluid influx from productive formation to bottom part of lens. Well is perforated in roof part of lens to provide product removal. Intervals of well perforation in bottom and roof parts of lens are separated, then product is removed in water-pressure mode provided by productive formation located below.

EFFECT: increasing oil removal coefficient at minimum costs.

4 cl, 3 dwg