Over nearly 30 years of exploitation , Jin-16 block, the main totally water flooding fault block reservoir in Liaohe oilfield, now has been situated in development-decreasing condition characterized by high water cut and high recovery percent of reserves, approaching a water flooding depletion-type reservoir with only 0.

Overall evaluation of recovery ratio at high water cut of water-drive reservoir

Accident analysis and risk identification of underground gas storage rebuilt upon the depleted oil and gas reservoirs