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压裂过程中压裂液的综合性能直接影响压裂施工的成与败,其中以压裂液的滤失为主要的参数。本文在分析储层滤失特征和滤失机理的基础上,提出了几种分析滤失系数的技术手段,包括小型压裂测试方法、两次停泵测滤失、破裂压裂与延伸压力差法、净压力拟合方法等等,这些技术方法可以相互对照,更好地了解地层的滤失情况,对压裂设计及施工和压后分析都有重要的借鉴意义。
The comprehensive performance of fracturing fluid during fracturing has a direct impact on the success or failure of fracturing. Among them, the fluid loss of fracturing fluid is the main parameter. Based on the analysis of the characteristics of fluid loss and the mechanism of fluid loss, this paper presents several technical methods to analyze the fluid loss coefficient, including the small fracturing test method, the two tests of filtration loss, fracture and extension pressure difference Method, net pressure fitting method, etc. These techniques can be compared with each other to better understand the formation loss and have an important reference for the design and construction of fracturing and post-compression analysis.