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Scientific Drilling The open-access ICDP and IODP journal
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Volume 17
Sci. Dril., 17, 37-43, 2014
https://doi.org/10.5194/sd-17-37-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Sci. Dril., 17, 37-43, 2014
https://doi.org/10.5194/sd-17-37-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Technical development 29 Apr 2014

Technical development | 29 Apr 2014

A new hybrid pressure-coring system for the drilling vessel Chikyu

Y. Kubo1, Y. Mizuguchi1,*, F. Inagaki2,3, and K. Yamamoto4 Y. Kubo et al.
  • 1Center for Deep-Earth Exploration (CDEX), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama 236-0061, Japan
  • 2Kochi Institute for Core Sample Research, JAMSTEC, Nankoku, Kochi 783-8502, Japan
  • 3Submarine Resources Research Project, JAMSTEC, Yokosuka 237-0061, Japan
  • 4Japan Oil, Gas and Metals National Corporation, 1-2-2 Hamada, Mihama-ku, Chiba-shi, Chiba 261-0025, Japan
  • *current address: Mantle Quest Japan Ltd., Shin-horidome Bldg. 5F, 2-4-3 Nihonbashi Horidome-cho, Chuo-ku, Tokyo 103-0012, Japan

Abstract. Retrieving core samples without releasing the in situ hydrostatic pressure during core recovery is one of the many technical challenges in scientific drilling. We report here a newly developed hybrid pressure-coring system for the use on the drilling vessel Chikyu and its successful use during expeditions 906 and 802 in the Nankai Trough of Japan. The system is gas-tight and hence enables researchers to study in situ geophysical and geochemical characteristics of sediments containing gaseous components, such as methane hydrates that cannot be reliably recovered with nonpressure coring systems. In addition, pressure coring is a powerful tool, not only for scientific but also for hydrocarbon resources research.

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