The Research Of Adjustment Measure In Wen 25 Oil Field Heterogeneous Reservoir With High Water Cut

Wen25 oilfield is a heterogeneous reservoir resulting in unevenly sweeping of injection water,and most wells of this area are producing with high water cut after more than thirty years development,therefore adopting adjustment measure with high water cut is becoming much more necessary.Generally,treatments such as layer adjustment,pattern infilling are utilized to improve reservoir development with high water cut,however,because the layer division and well pattern and space is mature after several development adjustments,the adjustments are directly adopted at current injection well and product well.The research of adjustment measure in heterogeneous reservoir with high water cut is imperative due to the lack of recognizing adjustment effect with high water cut,and it will be beneficial to optimize the concrete implement,minimize development risk and improve economic efficiency.Experimental method is the main study approach of this dissertation,just as Wen25 heterogeneous reservoir is the research object.First,according to the resistance calibration experiment and conventional water flooding experiment lay the foundation of following research.Then conduct various adjustment experiments with high water cut,study water flooding effect after adjustment by measuring water saturation distribution,production performance and recovery of different layers.Finally,summarize rule of water flooding sweep efficiency and effect of follow-up development after adjustment in a high water-cut heterogeneous reservoir.