Development of anti-contamination coring system for microbiological studies

抄録

In the coring operation carried out in science drilling or oil / gas exploration, core samples should be recovered without being contaminated to preserve the conditions at drilled point. Therefore, development of a coring system, which reduces a core contamination caused by contact with drilling fluid as much as possible, has been strongly required. In this research, a coring system, which can coat the core surface with gel having physical/chemical characteristics with the progress of coring, was developed. After the fabrication of prototype system, the fundamental functions and the reduction effect of core contamination were confirmed by on-land drilling test using it.