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川东石炭第气藏广泛地分布于四川盆地东部，已成为主力气藏。在勘探开发过程中气层受到伤害。自然渗透率下降，为提高天然气产能，大量地采用了压裂酸化技术措施。压裂酸化工艺技术的水平，影响到天然气增长的效果。为了确保压裂酸化工艺技术的有效作用，文章着重分析了四种盆地燕地区石炭系气藏压裂酸化的效果及影响酸化效果的主要因素，压裂酸化技术的发展趋势。提出了对于构造轴部，高点的井，一般宜采用每米厚度注入约１．５ｍ＾

DISCUSSION ON FRACTURE ACIDIZING TECHNOLOGY OF CARBONIFEROUS GAS RESERVOIRS IN EAST SICHUAN

??Chuandong Carboniferous gas reservoirs are widely distributed in the east port of Sichuan Basin.The gas bearing formation damages produced in the course of exploration and development make the natural permeability reduced. A lot of fracture acidizing technical measures are applied to raise the capacity of sas production. The results, influence factors and developing trend of fracture acidizing in the Carboniferous gas reservoirs in the east part of Sichuan form are emphatically analysed. Six suggestions are proposed out as followings:??for the wells at the structural axis and culmination high, it is suitable injecting about 1.5m³/m conventional acidizing fluid to eliminate the pollutions in the near wellhole zone and the depth acidizing will be done in the meduim and fat6r periods of gas producing;??for the wells at the flanks-ends with worse porosity, after conventional acidizing, depth acidizing technology can be immediately used to change the percrolation flow conditions;??the protective measures of oil-gas bearing formations should be thoroughly used in the operation course of drilling, well completion, production and well workover;?? deeply conducting the jobs of evaluating formations and selecting wells;??perfeCting the hole texture being favourable for fracture acidizing;??strengthening the jobs of fracture acidizing.