Application of High Intensity Profile Control and Water Plugging Technology in Shu 3 Area

Most oil wells in Shu 3 area of Shuguang oil field have been in high water cut period,comprehensive water cut is more than 80%.Formation heterogeneity,physical properties of the rock,the formation pressure change and other reasons result in water tongue of the same layer,bottom water coning and edge water incursion,which can make oil well water cut increase and productivity decline to seriously affect oilfield development effect.In view of the above problems,a new type of high strength profile control and water plugging technology was developed.Field application results show that,the strong gel profile control agent and high strength plugging agent have good stability and long effective period,and can effectively block the outlet passage;through the optimization of water plugging construction technology,using corresponding water plugging and profile control method combined with specific well conditions,pertinence and validity of the profile control and water shutoff measure can be improved,ultimate purpose of oil increasing and decreasing water content can be achieved.From 2010 to 2011,chemical water plugging was implemented 22 times,increasing oil was 7 101 t,decreasing water production was 67 384 t.