The Study On Water-flooding Project In Buried Hill Reservoir Of Magu-Mesozoic

The oil deposit in Magu-Mesozoic in buried pool is a new discovery fissure type block bottom water deposit founded by Liaohe Oilfield in recent years.The reservoir was buried under 3800 m of the earth, which was basically built up by developing breccia, high heterogeneity and binary medium, which fissure is most made of mid/high angle crevice, which is departed into five little field according to the state of fault development. Since 2009, it makes a good developing effect on the productive capacity by crest rate of recovery up to 1.9%, due to the deployment of similar square well-net and 350-500 m well interval. After its product become crestfallen, the pool need to relinquish to maintain the stable harvest for row explore and inactive bottom water. In this research, we carry out the relative design and research in reservoir engineering, also the feasibility of water-flooding development by construe explore characteristic and analogical method experience formula and reservoir simulator, which is based on the dainty geology knowledge. Consequently, we make an optimized design in water-flooding time, input way, input pressure, input capacity, water quality and pressure maintain level of water-flooding factor, also make a detail analysis in five little field one by one, individual design with water-flooding explore in vertical well and horizontal well to reassure the effect. The project covers fifteen oil wells, six water-flooding well(including one horizontal well), clears the water-flooding way in Mg-6 and Mg-6-2 as soon as possible to realize the potent development in whole buried hill by 1% stable rate of recovery in five years and extent of recovery up to 14.9% in ten years. The research plays a positive role in the effect of Liaohe binary medium block reservoir development, will guide and impel the buried hill reservoir’s water-flooding by its application scale and value in Liaohe Oilfield.