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分析了API滤失试验的缺点和确定泥饼质量的关键因素,介绍了用泥饼强度、泥饼渗透率和泥饼厚度评价泥饼质量的试验方法。讨论了泥饼质量评价参数对钻井工艺和油气层保护的指导意义。通过对吐哈丘陵油田两口井泥饼质量的评价,结果表明该试验方法能对井下泥饼质量作出正确评价,而且钻井液颗粒粒径分布对泥饼质量有很大影响,可通过调整钻井液颗粒粒径分布形成薄而致密的泥饼。
The shortcomings of the API filtration test and the key factors to determine the quality of the cake were analyzed. The test methods for evaluating the quality of the cake with the strength of the cake, the permeability of the cake and the thickness of the cake were introduced. The significance of mud cake quality evaluation parameters to drilling technology and reservoir protection is discussed. Through the evaluation of mud cake quality in two wells in Tuha Hilly Oilfield, the results show that the test method can correctly evaluate the mud cake quality, and the particle size distribution of drilling fluid has a great impact on the quality of mud cake. By adjusting the drilling fluid Particle size distribution to form a thin and dense mud cake.