METHOD FOR EXTRACTING MULTI-BED DEPOSIT AT LATER STAGE WITH RENTABLE WELL DEBIT Russian patent published in 2004 - IPC

FIELD: oil extractive industry.

SUBSTANCE: method includes drilling of force-pumping and extracting wells, pumping of pushing liquid into force-pumping well and extraction of bed product through extracting well. Portion of non-rentable extracting and force-pumping wells from highly permeable highly watered beds is converted to extraction of less-watered higher beds with forming of system of extraction on basis of thickened mesh. Oil extraction from highly permeable highly watered beds is continued according to dispersed mesh by remaining extracting wells left in hypsometrically lowered portions of deposit. Product extraction from extracting wells is performed while performing operations on providing for rentable debit due to prevention of forming of water cone.

EFFECT: possible extraction of oil deposits with rentable well debit.

4 dwg