FIELD: oil production. SUBSTANCE: oil deposit is developed at natural regime with oil extraction through vertical and horizontal productive wells. Lengthwise axis and zones of increased and decreased permeability are determined on the deposit. Vertical productive wells are placed in rows along lengthwise axis. Horizontal productive wells are placed in fan-shaped manner at an angle to lengthwise axis of the deposit being not less than 30 degrees concurrently in zones of decreased and increased permeability. EFFECT: high productivity.
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Authors
Dates
1996-05-27—Published
1995-06-08—Filed