Integrated technology of regulation and plugging in medium-high permeability sand conglomerate reservoir: A case study of Badaowan formation reservoir in Dishuiquan oilfield

The reservoir of Badaowan formation is a medium coarse throat, medium pore, medium permeability and strong heterogeneity reservior in Dishuiquan oilfield. The bottom of the structure is controlled by the oil-water boundary. In 2011, the reservoir was developed by synchronous water injection. After being put into production, the water cut of oil well increased rapidly and the injected water channeled seriously. In 2012, the arrangements of profile control, water injection optimization, etc. have achieved some results at the initial stage of the measures. The rate of water cut rise became slow down, but the overall effective time was short. At the same time, the injection water channeling was seriously, the swept volume of water drive was reduced, and the production degree of water drive reserves was reduced. After several times of profile control, the trend of water cut rapidly rise has not been restrained. It is an urgent problem to be solved that how to control water channeling at this moment. Aiming at the above problems, combined with the results of geological engineering research, the integrated regional treatment technology of regulation and plugging is proposed, which is from single water well profile control to two-way comprehensive treatment of oil and water wells. After the arrangements, the average oil production of single well increase by 55.4%, the effective period of the measures extend by 366%, the overall water cut rise rate of the block decrease by 37.5%, and the cumulative oil production increase by 6 300 t. Considering the implementation effect, the integrated technology of regulation and plugging is suitable for the medium and high permeability glutenite reservoir in this area, which provides a reference for the comprehensive treatment measures of similar reservoirs.