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油水相对渗透率曲线是油水两相渗流特征的综合反映,也是油水两相在渗流过程中,遵循的基本规律。通过对延长王家川油田董台12井区块油藏渗流特征的分析,掌握了该区油藏渗流规律。研究认为:该区油水二相渗流区间相对较窄,最终采收率较低,初期随着采液指数的快速递减,采油指数也呈现快速递减的趋势,含水60%以后,采液能力逐步恢复,但油田整体提液能力不大,最大含水上升率在4-5之间,中低含水期含水上升较慢。
The relative oil-water relative permeability curve is a comprehensive reflection of the characteristics of oil-water two-phase seepage, and is also the basic law to be followed in oil-water two-phase seepage process. Through the analysis of extending the reservoir reservoir seepage characteristics of Dongtai-12 well in Wangjiachuan Oilfield, the law of seepage in the reservoir is mastered. The study shows that the oil-water two-phase seepage interval in this area is relatively narrow, and the final recovery rate is low. With the rapid decrease of the liquid production index, the oil recovery index also shows a rapidly decreasing trend in the initial stage. After the water content is 60%, the liquid recovery capability gradually resumes , But the overall capacity of the oil field is not large, the maximum water cut rate is between 4-5, and the water cut in middle and low water cut period is slower.