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基于单砂体的剩余油分布规律、挖潜单元以及相对应的挖潜技术对策。所指单砂体是地质上具有成因联系、开发上相对独立的砂体单元,既是地质上的成困单元,也是与剩余油分布有关的渗流单元,既反映了砂体的沉积成圈,也决定了剩余油分布特征和注水开发特征。单砂体成因类型可以划分为多期河道叠加型、分支河道型、单一河道型和席状砂型4个大类;结合注水开发特点,每种类型具有高注高采、高注低采、低注低采和低注高采4种注采方式。剩余油潜力评价昀结果表明:多期河道叠加型单砂体潜力最大,其次是席状砂型单砂休,分支河道型和单一河道型单砂体潜力较小。
Remaining oil distribution based on single sand body, tapping potential units and the corresponding potential tapping technical countermeasures. The single sand body is geologically associated with the relatively independent development of sand body units, both as a geological formation of trapped units, but also with the remaining oil distribution of seepage units, reflecting both the sand body into a circle, but also Determine the remaining oil distribution characteristics and water injection development characteristics. The genetic types of single sand body can be divided into four major categories: multi-period river channel superimposed, branch channel, single river channel and sandy sand. Combined with the characteristics of water injection development, each type has high injection, high injection, low extraction and low Note low mining and low injection high mining 4 injection method. The results of the remaining oil potential evaluation indicate that the multi-stage channel superimposed single sand body has the highest potential, followed by the sand-shaped single sand bank, and the branch channel type and single channel sand body have less potential.