Proc. IODP, 337, Data report: permeability of ~1.9 km deep coal-bearing formation samples off the Shimokita Peninsula, Japan

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Chapter contents Abstract Introduction Methods and materials Coal-bearing formation samples Permeability measurements Grain-size distribution and porosity of sandy sediment Results Acknowledgments References Figures F1. Triaxial consolidation permeability test device. F2. Grain-size distribution. F3. Porosity. Tables T1. Permeability and grain-size test samples. T2. Permeability test results. T3. Grain-size measurements. PDF file Errata			Previous \| Next doi:10.2204/iodp.proc.337.202.2017 Data report: permeability of ~1.9 km deep coal-bearing formation samples off the Shimokita Peninsula, Japan¹ Akira Ijiri,^2, ³ Yojiro Ikegawa,⁴ and Fumio Inagaki^2,^3,⁵ Abstract We report the permeability of ~1.9 km deep coal-bearing formation samples retrieved at Site C0020 during Integrated Ocean Drilling Program Expedition 337 off the Shimokita Peninsula, Japan. The flow-through permeability test was conducted by a triaxial consolidation permeability test device. The intrinsic permeability of lignite coal samples is 3.80 × 10^–20 m² and 3.61 × 10^–20 m² at 1919.57 and 1922.95 meters below seafloor (mbsf), respectively. In contrast, a sample from a sand layer interbedded with the coal layer at 1925.38 mbsf is unconsolidated and too soft to conduct permeability tests. The sand size fraction (>75 µm) is 88.5 wt%, and the estimated porosity is 40.5%. ¹ Ijiri, A., Ikegawa, Y., and Inagaki, F., 2017. Data report: permeability of ~1.9 km-deep coal-bearing formation samples off the Shimokita Peninsula, Japan. In Inagaki, F., Hinrichs, K.-U., Kubo, Y., and the Expedition 337 Scientists, Proceedings of the Integrated Ocean Drilling Program, 337: Tokyo (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.337.202.2017 ² Kochi Institute for Core Sample Research, Japan Agency for Marine Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Correspondence author: ijiri@jamstec.go.jp ³ Research and Development Center for Submarine Resources, JAMSTEC, Yokosuka 237-0061, Japan. ⁴ Civil Engineering Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), Chiba 270-1194, Japan. ⁵ Research and Development Center for Ocean Drilling Science, JAMSTEC, Yokohama 236-0001, Japan. Initial receipt: 12 April 2016 Acceptance: 2 May, 2017 Publication: 7 July 2017 MS 337-202 Top of page \| Previous \| Next