The Numerical simulation of oil stable production by water control of Suizhong 36-1 oilfield and its application

Bohai SuiZhong 36-1 oilfield stage I lost limited liquid 12 000 m3 /d in 2008-2009,this will affect the annual ac-cumulative oil production of 40×104 m3.In order to ensure the stable production and considering the contradiction of in-jected water single layer one way dash in the process of oil field development,numerical simulation has been applied on the watered plugging based on optimizing injection.Three water plugging design has been considered:plugging sand prevent section,plugging high water cut in small layers and layer insider plugging.The water level of different oil layer are more than 90%,80% and 70% respectively.Water plug-ging reduce the invalid injection,improve the injected water efficiency,reduce platform sewage,realized energy saving and emission reduction,and created fluid space in the mid and low water containing well production.The study shows that the more precise water plugging,the less oil loss caused of fluid extracting,which enhanced oil recovery to certain degree.Field test result shows obvious reducing water and in-creasing oil after the water plugging in high water containing well.