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根据新集试验区地质、储层条件,提出了适合该地区煤层气井水力压裂选井选层方法。通过对3口试验井8个目标层段进行水力压裂增产改造,认为活性水压裂液、兰州砂支撑剂应作为该地区的首选压裂液和支撑剂。利用先进的压裂软件进行压裂设计、实时分析以及压后评价,通过严密组织、合理施工获得了单井最大日产气量3 278m3/d,为该地区今后进行煤层气勘探开发提供了技术基础。
According to the geology and reservoir conditions of Xinji test area, a method of well selection and layer selection suitable for hydraulic fracturing of CBM wells in this area is proposed. Through the hydraulic fracturing stimulation of 8 target zones of 3 pilot wells, it is considered that active water fracturing fluid and Lanzhou sand proppants should be the preferred fracturing fluid and proppant in this area. Using advanced fracturing software to design fracturing, real-time analysis and post-compression evaluation, the maximum single gas production of 3 278m3 / d was obtained through tight organization and reasonable construction, which provided the technical basis for CBM exploration and development in this area in the future.