High-resolution rock structure image processing method and its applications in carbonate reservoir evaluation
Liang Mingxing · Acta Petrologica Sinica · 2012
The resistivity imaging logging is known as one of the indispensable means for solving problems of heterogeneous complex clastic reservoirs fractured-vuggy carbonate reservoirs,and volcanic reservoirs.The previous high-end logging technology is gradually considered to be a routine method.At present,the mainstream image processing approaches commonly employ the image enhancement methods based on the pixel distribution characteristics.Despite substantial improvement compared to the original linear image enhancement method,the distribution-based image enhancement methods do not take into account the distributions of rock structural features,commonly leading to the submergence of major geological features in minor features and noises.On the basis of conventional image enhancement methods,this study focused on rock structure information and proposed a new rock structure-based image enhancement method.Based on the identification of rock structural features,the proposed method was shown to increase the weight of targeted key information in the images,weaken the background and noises,and optimize the dynamic imaging color according to the distributions of rock structural features.These would significantly increase the effective information and improve the image resolution,providing a prerequisite for further precise interpretation.