MULTI-RESERVOIR OIL FIELD DEVELOPMENT METHOD Russian patent published in 2010 - IPC E21B43/14 

FIELD: oil-and-gas industry.

SUBSTANCE: method includes reservoirs subdivision by groups with different filtration capacity properties, selecting reservoir groups with a different permeability, pumping in a working agent through injection wells, oil withdrawal through production wells. After reservoir subdivision according to their filtration capacity properties, divide them on three groups of a different permeability using parkers. Selectively separate lower reservoir group in injection wells, execute additional permeability examination of the top and bottom groups according to corresponding separated columns. Then remove sealing, study total permeability of the middle and the bottom reservoirs groups. Equip the injection wells bottom parkers with flow separators, for example with a nozzle or a control valve. Then pump in the working agent along the separate columns in to the top reservoir group and into a middle and bottom reservoir groups. At that execute pumping on the wellhead with one injection line, separate it with a flow regulator, for example with valves for the separate columns of every injection well. Execute the reservoir group product withdrawal simultaneously or separately in dependence with the product physical-chemical properties.

EFFECT: method capabilities extension, simplification and cost cutting of production process.

2 dwg