Potential evaluation and application of intensely waterflooding layer inⅥproducing section,Shuanghe oilfield

Ⅵproducing section in Shuanghe oilfield is characterized by the high composite water cut as 93.4%,the production rate as 0.58%and major member being intensely water -flooded.The recovery potential of the intensely water-flooding layers is evaluated through the numerical simulation. After the measures such as adjustment of injection and recovery framework,fluid diversion,deblocking,broken down and recycling the plugged zone of long duration are used according to the distribution of residual oil and production performance,the recoverable reserves are resumed to be 67.5×10~4 t and the recovery rate is increased from 40.68% to 42.2%.Then the degression of fluid unit is contained and the production rate is enhanced,resulting in a good production condition.