The Research Of Water Flooding Disciplinarian Of Strong Edge Water Drive Reservior

Region pai-10 is located on the east of Chepaizi raise on the west lift,Zhunge'er Basin.It contains four small oil sand bodies,eg.chun 22,chun 27,chun32,chun 33.The object layer is Shawan layer.The type of the reservior is shallow lithologic resevior.Buried shallow and bad compaction cause loose sandstone.The acreage of the oil field is little.The reservior with enough natural energy has a good physical properties—high porosity and permeability.The well pattern is vertical and horizontal wells staggered.The main problem of this area in devloping is as follow.Although we devolop the reservior using natural energy,we have not known it clearly.The well pattern is vertical and horizontal wells staggered.The well pattern is not regular,and it hard to control.There are multipule posibilities of mean of the spillpoint of oil and water boundary and the flat property.It means the oil and water boundary of this area is not confirmed.It need futher confirmation.The forward speed of waterline is not clear,the regular of the water flooding is not indefinite.Now,There are many methods to measure boundary of oil and water.The most common methods are logging and well test.During exploration,exploration well usually on high construction area,but most of them not drilling encounter the boundary of oil and water,and do not have enough date of well test,so this mathod is such limited.Now,we combine isosaturation surface movement equation and material balance equation,calculate the boundary of oil and water.This mathod is a supplement to that reservior in limited conditon.The law of forward speed of waterline is based on accumulative development and dynamic regulation.Through actual production data for monitoring management of residual oil and water ratio,and feedback the problem timely,adjust production to improve sweep efficiency and recovery efficiency.