碳酸盐岩油气藏注水开发技术分析

Analysis of Water Flooding Technology in Carbonate Reservoir

随着油气田开发过程地层能量衰竭,注水成为了目前较为常见的二次采油技术手段。针对缝洞型碳酸盐岩油气藏,储层内部既有大尺度的洞穴,又有大量裂缝。注入水在洞穴内受重力分异,会产生良好的置换作用,注水能起到良好的提高采收率作用。制定了相关选井原则,确定了相关注水参数,为该类储层注水提供理论指导。

With the depletion of formation energy in the development of oil and gas fields,water injection has become the two common means of oil recovery.In view of fractured vuggy carbonate reservoirs,there are large caves and large cracks in the reservoirs.Injected water is differentiated by gravity in the cave,which can produce good displacement effect and can improve oil recovery.The relevant well selection principles have been worked out,and relevant water injection parameters have been determined,which will provide theoretical guidance for water injection in this type of reservoirs.