OIL FIELD DEVELOPMENT METHOD Russian patent published in 2005 - IPC

FIELD: oil production industry, particularly enhanced recovery methods for obtaining hydrocarbons.

SUBSTANCE: method involves injecting working agent through injection wells; producing oil through production wells; converting production well into injection well. To realize above method at least one well is selected in well row, wherein the selected well is spaced equal distances from injection well rows and has the least output in comparison with another production wells of present oil bed area. The selected well is converted into injection one. Before above conversion bottom zone of the well is cleaned and above oil bed area is subjected to vibratory action simultaneously with working agent injection through this additional injection well. Summary oil recovery increase is accepted to be equal to working agent volume injected in additional injection well.

EFFECT: increased oil recovery efficiency during oil production from non-uniform bed.

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