Well Spacing Scheme Optimized for Thin and Poor Reservoir in the North of the Xing4-6 Block

摘要

At present water flooding in the north of the Xing4-6 block has entered into the extra-high water cut development, so thin and poor reservoir is as the main object of the infilling adjustment. According to the result of numerical simulation, the remaining oil distribution of thin and poor reservoir is analyzed and the remaining oil types are determined. Through the quantification for the remaining oil distribution and watered-out state of various layers, the potentiality of the infilling adjustment and tapping measures are researched, then well spacing scheme is designed and optimized from development effect and economic benefit. It is shown that three layer series, namely saertu good layers, saertu poor layers, P I 4 and below layers, are used so that water cut decreases by 2.84%, and the recovery efficiency increases by 5.05% , which significantly improves the water flooding development effect. The result will provide reference for improving thin and poor reservoir.