Abstract: The demorphism, poor preservation and frequent sampling bring severe loss of cores. To solve this problem, the more efforts in core data digitization, high resolution core image acquisition, core datalbase with pictures and texts and its application on network have been made in different degrees in every oilfeld of China. As one of earlier oifield for doing so, it has set up a system of fairly perfect network digitized core database, and its establishment or application has improved not only the quality and level of core management,but also enriched the means for exploration and development researches,and raised the ability of scientific decision-making for those re-searches and production effectively.

Key words: Tuha oilfield, core, image scanning, digitization, network, databese