垂直缝全充填压裂技术
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摘要
为了保证支撑剂在裂缝中全悬浮,提高垂直缝储层压裂改造效果,研究了垂直缝全充填压裂技术。通过研究纤维技术原理,确定纤维悬砂压裂可以控缝高、降低储层伤害;通过分析变密度加砂压裂技术,形成不同密度和粒径的组合;优化支撑剂在裂缝中的铺置,获取最优的裂缝导流能力。通过现场实验,建立了一套适合垂直缝储层的压裂技术,明显提高了该类储层的压裂后效果,为大庆油田扶杨储层垂直缝储层压裂改造提供新手段。
In order to keep the whole suspension of proppants in fractures and improve the fracturing effect in vertical fractured reservoirs, the full filling fracturing technique for vertical fractures has been researched. The fiber suspension sand fracturing was determined by studying the principle of fiber technology, which could control the fracture height and reduce the damage of reservoir. The combination of different density and particle size was formed through the analysis of variable density sand fracturing technology. The optimal support-fracture conductivity was obtained by optimizing the placement of proppant in the fractures. Based on the field experiment, a fracturing technique suitable for vertical fractured reservoirs has been established, which improved the production effect of postfracturing obviously. It is considered to be a new means for fracturing vertical fractured reservoirs in Daqing Fuyang reservoir.
引文
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