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水平井分段压裂技术成功推动北美非常规油气的规模化开发,但面临油气井产量递减快等难题。在低油价形势下,重复压裂和无限级压裂技术极具经济优势,是提高非常规生产井产量和最终可采储量的利器。技术创新包括:(1)裂缝暂堵转向技术。不仅有效封堵近井地带的裂缝和炮眼,改变裂缝起缝方向,还能通过封堵主裂缝实现缝内转向,在油气层中打开新的
The horizontal well fracturing technology successfully promoted the large-scale development of unconventional oil and gas in North America, but faced with such problems as the production decline of oil and gas wells. Under the condition of low oil price, the technologies of repeated fracturing and infinite fracturing have great economic advantages and are the tools to increase the production and ultimate recoverable reserves of unconventional production wells. Technological innovations include: (1) temporary plugging steering technology. It not only effectively seals the cracks and bores in the near-well zone, changes the direction of crack initiation, but also achieves the steering in the seam by plugging the main cracks and opens new