OIL FIELD DEVELOPMENT CONTROL METHOD Russian patent published in 2007 - IPC E21B43/16 

FIELD: oil production, particularly composite oil field development under control.

SUBSTANCE: method involves extracting 6-15% of planned recoverable oil reserves; determining difference between actual oil output from each producing well with planned oil output, wherein the difference is characterized by divergence factor; selecting wells having B_i≥20%; determining summary actual oil output from selected wells and comparing the actual oil output with planned one from all producing wells of the oil field at current point of time. If summary actual oil output from selected wells is equal to at least 20% of planed oil output from all producing wells of the oil field at current point of time oil field development plan is refined and new planned figures are set for each well. After that oil production from production wells and displacing agent injection in injection wells are regulated in correspondence with the new figures. If summary actual oil output from selected wells is less than 20% of planned oil output from all producing wells at current point of time plan is refined at later development stage after at least 80% of planned recoverable oil reserve extraction.

EFFECT: increased efficiency due to possibility of complete oil extraction.

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