METHOD FOR MULTIPAY OIL FIELD DEVELOPMENT Russian patent published in 2007 - IPC E21B43/14 E21B43/30 

FIELD: oil production industry, particularly to develop multipay oil fields, especially ones having reservoirs with oil-filled thickness, low permeability or containing highly-viscous oil.

SUBSTANCE: method involves separating production facilities; determining producing and injection well pattern; drilling wells, producing oil from producing wells and injecting displacing agent through injection wells. Period of oil field reserves recovery is approximated to medium guaranteed well service life period where not more than 20% of producing wells are abandoned for technical reasons by drilling common through well pattern for oil reservoir group of the oil field with well amount increase and development time decrease. At that oil field is developed with the use of all producing wells by serially extracting product from separate reservoir or from group including reservoirs communicated with each other through non-reservoir bridges, with thickness of not more than 30 m in descending order of reservoir productivity beginning from reservoir having the greatest productivity.

EFFECT: increased oil recovery due to usage guaranteed well service life as pattern density optimization and due to control of selected facility exploitation order and regime along with achievement of oil recovery exceeding designed one for current oil field.

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