Test and Research on the Commingled Development of Two Kinds of Low Efficiency Oil Reservoirs

Abstract The interzonal interference of the commingled production of Putouhua and Fuyu oil reservoirs with large vertical distance (about 400m) and large permeability difference (air permeability of 118 X 10 -3 m 2 for Putouhua oil reservoir, 1.16 X 10 -3 m 2 for Fuyu oil reservoir) is solved, by theoretical analysis and field pilot test based on seepage mechanics. After one-year field pilot test, the production situation of each oil reservoir of the commingled reservoirs is coincident with the situation of single-reservoir production a line. These make the best use of the production capacities of these two oil reservoirs and provide experience and technology for economically and effectively developing the large overlaping area of Putouhua and Fuyu oil reservoirs in future. P. 419