In combination with outcrop calibration well,numerical and physical simulation,advances in fracture and vug interpretation using microresistivity imaging logs have been analysed and discussed,which include core-shifting,calibration rate,correlation of fracture parameter between cores and imaging logs,and fracture aperture and formation porosity calculation, respectively.Unfilled fractures cutting through drilling wells and pore or vug intervals have a 100% calibration rate,while a single pore or vug generally lost one to one correspondence.Dip angle or circumferential length of a single fracture show good correlation between cores and imaging logs, yet have a moderate relation for fracture apertures.Numerical and physical simulations both indicate that fracture apertures derived from imaging log are controlled by several factors.Apparent apertures more than 0.1 mm,are basically equal to the calculated apertures;on the contrary, the value error increases.Present methods for formation porosity based on imaging logs include porosity spectrum and image segmentation,yet both are restrained by other conductive geological objects except open pores and vugs.Thus,cores should be further used to calibrate borehole images.