Abstract: Applying 3D high resolution reservoir characterization technique based on CT imaging, the sandstone core plug, dolomite core plug and basalt outcrop sample have been analyzed for researching their micro-pore textures. The work includes the sample preparing, CT scanned imaging, image processing, and attributes calculating. According to the CT scanning data, the 3D visualization images of solid phase and pore phase of the samples have been also built. For sand core plug, relative statistics of pores is conducted and the petrophysical properties (porosity and permeability) are obtained by computing. The data of porosity and permeability are compared to conventional laboratory measurement on the same cores with good agreement. The study shows that the research of micro-pore texture using 3D high resolution reservoir characterization technique based on CT imaging has many advantages, including low requirement for sample, more visual result, more abundant data and higher efficiency.

Key words: CT imaging, reservoir characterization, pore texture, sandstone, dolomite