Based on the definition of fracture surface porosity and fracture porosity, the calculation models of the ratio of the two parameters were established for horizontal fracture, low-angle fracture, inclined-angle fracture, high-angle fracture and vertical fracture. The ratio for different fracture angles, hole diameters and window length was numerically simulatecl. The influence factors of ratio of low-angle fracture , inclined-angle fracture, high-angle fracture were analyzed. The production data verified the correctness of numerical simulation results, and the fracture porosity was calibrated hy fracture surface porosity. The results show that the relationship between fracture surface porosity and fracture porosity is not as simple as linear or logarithmic relationship. The calibration formula of fracture surface porosity on fracture porosity will be gotten after first calibration and last calibration.%根据裂缝面孔率和裂缝孔隙度的定义,分别建立水平缝、低角度缝、倾斜缝、高角度缝和垂直缝时裂缝面孔率与裂缝孔隙度比值的计算模型,并分别计算不同裂缝倾角、不同井径和不同窗长时的比值,分析低角度缝、倾斜缝和高角度缝条件下比值的影响因素,最后通过对实际测井资料计算该比值,验证数值模拟结果的正确性,同时利用裂缝面孔率对裂缝孔隙度进行标定,进而得到标定公式.结果表明:裂缝面孔率和裂缝孔隙度之间并非简单的线性或者对数关系;裂缝面孔率对裂缝孔隙度标定时需进行初次标定和再次标定.
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