A method for water-flooded layer identification of horizontal wells for porous carbonate reservoir in Middle East
In the Middle East a porous carbonate reservoir employs vertical and horizontal wells to produce oil accompanying with water injection from bottom and edge water zone.Some horizontal wells produce water in high resistivity reservoir and some produce oil in low resistivity reservoir,which confused engineers in log interpretation and reservoir develop-ment.The paper first summarizes the low resistivity causes,then establishes time-lapsed re-sistivity log based on while-drilling log and pipe-convoyed log to identify fluid properties for horizontal wells,and the identification plate is established,and good results are obtained.Further,two principle waterflooded patterns come into being based on analyzing water distri-bution and waterflooding path,which are vertical bottom water flooded pattern and horizontal edge water flooded pattern,which provide scientific basis for oil stability,water control and efficient development.
万方数据
维普
