METHOD FOR OIL FIELD DEVELOPMENT Russian patent published in 2007 - IPC E21B43/20 

FIELD: oil production industry, particularly enhanced recovery methods for obtaining hydrocarbons, namely for hydrocarbon displacement by water.

SUBSTANCE: method involves producing oil through producing wells and injecting working agent through injection wells in cyclic regime, wherein the injection wells are grouped into ones having high injectivity and ones having low injectivity and injection well with high injectivity of one group is paired with that having low injectivity of another group; fluidly communicating all injection wells with each other through ground-based waterway systems so that fluid may flow from injection well with low injectivity to one having high injectivity. Cyclic working agent injection through paired injection wells having high and low injectivities is performed in two semi-cycles. The first semi-cycle involves injecting working agent via injection well having low injectivity along with shutdown of injection well having high injectivity. The second semi-cycle involves injecting working agent through injection well having high injectivity along with working agent injection via injection well having low injectivity to equalize well bottom pressure in injection wells having high and low injectivities. After above pressure equalization working agent injection through injection well having low injectivity is stopped and working agent injection through injection well having high injectivity is continued.

EFFECT: provision of injection well cooperation after working agent supply stopping and injection well zone cleaning by outflow.

1 ex