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针对超低渗油藏,因其储层致密、渗透率超低,决定了采用常规压裂形成单一裂缝的增产改造措施难以实现其商业开采价值,所以必须探索研究新型的压裂改造技术。借鉴国外页岩气体积压裂技术的成功利用,国内提出了体积压裂改造超低渗油藏的设想,并在陇东油田进行了试验和应用。实践证明,超低渗油藏经体积压裂后,形成复杂缝网、增大改造体积,不仅初期产量高,而且更有利于长期稳产,取得较好的效果。
For ultra-low permeability reservoirs, because of its tight reservoir and extremely low permeability, it is difficult to realize its commercial exploitation value by means of stimulation and stimulation measures to form a single fracture by conventional fracturing. Therefore, it is necessary to explore and study the new fracturing technology. Drawing on the successful utilization of shale gas volume fracturing technology in foreign countries, the idea of volumetric fracturing in transforming ultra-low permeability reservoirs has been put forward and tested and applied in Longdong Oilfield. Practice shows that the ultra-low permeability reservoir after the volume fracturing, the formation of complex seam network, increase the transformation volume, not only the initial high yield, but also more conducive to long-term stable production, and achieved good results.