gas hydrate - CCOP

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In the early stage of back-arc opening of the East Sea, rapid subsidence, structural movements, and slope instability were accompanied by large-scale slope failure and emplacement of mass flow deposits. In the transitional phase from back-arc extension to compression during the middle Miocene, active uplift and compressional deformation also resulted in mass failure and the frequent input of mass flows into the basin. From the late Miocene times, the Ulleung Basin and Korea Plateau experienced rapid subsidence and episodic tectonic deformation during the back-arc closing stage. In the late Miocene and Pliocene, the large-scale mass failure and mass flow events were closely related with the tectonic deformation events. After the latest tectonic event, in the middle Pliocene, the East Sea assumed a tectonically stable condition. During the Quaternary, although tectonically quiescent, the Ulleung Basin and Korea Plateau were also affected by frequent events of mass failure and mass flow. These events were probably related with sea level fluctuation, climate change, seismic shocks or gas hydrate expulsion. SUMMARY The seismic stratigraphy of the Ulleung Basin and Korea Plateau is characterized by repetitions of stratified and chaotic (or transparent) facies units. These units are grouped into four sets (US-1, -2, -3, and -4 in ascending orders), based on large-scale anticlinal folding structures and an erosional truncation surface. The unit sets in the plateau are respectively assigned to early to middle Miocene, middle to late Miocene, early to middle Pliocene, and late Pliocene to Quaternary age in ascending order. In the Ulleung Basin and Korea Plateau, mass failure and mass flows were of frequent occurrence and were of large scale during the early stage of back-arc opening of the East Sea and the periods of rapid subsidence in late Miocene and Pliocene times. During the Quaternary, although tectonically quiescent, the Ulleung Basin and Korea Plateau were also affected by frequent events of mass failure and mass flow. These events were probably related with sea level fluctuation, climate change, seismic shocks, or gas hydrate expulsion. REFERENCES Chough, S.K. 1982, Turbidites in the Ulleung (Tsushima) back-arc basin, East Sea (Sea of apan). In: Hoshino, M. and T. Shibasaki (Eds.), Geology of Japan Sea, Tokai University Press, Tokyo, 365-376. Chough, S.K. 1983, Marine Geology of Korean Seas, International Human Resources Development Corporation Publishers, Boston, MA, 157 pp. Chough, S.K. 1984, Fine-grained turbidites and associated mass flow deposits in the Ulleung (Tsushima) Basin, East Sea (Sea of Japan). In: Stow, D.A.V. and D.J.W., Piper (Eds.), Fine-Grained Sediments: Deep Water Processes and Environment, Geological Society of London, Special Publication No. 15, 185-196. Chough, S.K. and E. Barg, 1987, Tectonic history of Ulleung basin margin, East Sea (Sea of Japan). Geology, Vol. 15, 45-48. Chough, S.K. and H.J. Lee, 1987, Stability of sediment on the Ulleung Basin Slope. Marine Geotechnology, Vol. 7, 123-132. Chough, S.K. and K.E. Lee, 1992, Multi-stage volcanism in the Ulleung Back-arc Basin, East Sea (Sea of Japan). The Island Arc, Vol. 1, 32-39. 114 New Energy Resources in the CCOP Region - Gas Hydrates and Coalbed Methane
Chough, S.K., S. H. Lee, J.W. Kim, S.C. Park, D.G. Yoo, H.S. Han, S.H. Yoon, S.B. Oh, Y.B. Kim and G.G. Back, 1997, Chirp (2-7 kHz) echo characters in the Ulleung Basin. Geoscience Journal, Vol. 1, 143-153. Chough, S.K., H.J. Lee and S.H. Yoon, 2000, Marine Geology of Korean Seas (2 nd Edition), Elsevier, Amsterdam, 313 pp. Jolivet, L., P. Huchon, J.P. Brun, X. Pichon, N. Chamot-Rooke and J.C. Thomas, 1991, Arc deformation and marginal basin opening: Japan Sea as a case study. Journal of Geophysical Research, Vol. 96, 4367-4384. Lee, G.H. and B.C. Suk, 1998, Latest Neogene-Quaternary seismic stratigraphy of the Ulleung Basin, East Sea (Sea of Japan). Marine Geology, Vol. 146, 205-224. Lee, G.H. and B. Kim, 2002, Infill history of the Ulleung Basin, East Sea (Sea of Japan) and implications on source rocks and hydrocarbons. Marine and Petroleum Geology, Vol. 19, 829-845. Lee, G.H., H.J. Kim, S.J. Han and D.C. Kim, 2001, Seismic stratigraphy of the deep Ulleung Basin in the East Sea (Japan Sea) back-arc basin. Marine and Petroleum Geology, Vol. 18, 615-634. Lee, H.J., S.K. Chough, S.S. Chun and S.J. Han, 1991, Sediment failure on the Korea Plateau slope, East Sea (Sea of Japan). Marine Geology, Vol. 97, 363-377. Lee, H.J., S.S. Chun, S.H. Yoon and S.R. Kim, 1993, Slope stability and geotechnical properties of sediment of the southern margin of Ulleung Basin, East Sea (Sea of Japan). Marine Geology, Vol. 110, 31-35. Lee, H.J., S.K. Chough and S.H. Yoon, 1996, Slope-stability changes from late Pleistocene to Holocene in the Ulleung Basin, East Sea (Sea of Japan). Sedimentary Geology, Vol. 104, 39-51. Lee, S.H. 2001, Depositional processes of Quaternary sediments in the Ulleung Basin, South Korea Plateau, Ulleung Interplain Gap and Oki Bank, East Sea: Chirp (2-7 kHz) profiles. Ph. D. dissertation, Seoul National University, Seoul, 156 pp. Lee, S.H., S.K. Chough, G.G. Back, Y.B. Kim and B.S. Sung, 1999, Gradual downslope change in high-resolution acoustic characters and geometry of large-scale submarine debris lobes in Ulleung Basin, East Sea (Sea of Japan), Korea. Geo-Marine Letters, Vol. 19, 254- 261. Lee, S.H., S.K. Chough, G.G. Back and Y.B. Kim, 2002, Chirp (2-7 kHz) echo characters of the South Korea Plateau, East Sea: styles of mass movement and sediment gravity flow. Marine Geology, Vol. 184, 227-247. Yoon, S.H. 1994, The Eastern Continental Margin of Korea: Seismic Stratigraphy, Geologic Structure and Tectonic Evolution, Ph.D. dissertation, Seoul National University, Seoul, 235 pp. Yoon, S.H. and S.K. Chough, 1993, Evolution of Neogene Sedimentary Basins in the Eastern Continental Margin of Korea. Korean Journal of Petroleum Geology, Vol. 1, 15-27. Yoon, S.H. and S.K. Chough, 1995, Regional strike-slip in the eastern continental margin of Korea and its tectonic implications for the evolution of Ulleung Basin, East Sea (Sea of Japan). Bulletin of Geological Society of America, Vol. 107, 83-97. New Energy Resources in the CCOP Region - Gas Hydrates and Coalbed Methane 115
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Coordinating Committee for Geoscien
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Thematic Session on New Energy Reso
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CONTENTS Page OPENING REMARKS……
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OPENING REMARKS by Chen Shik Pei Di
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WELCOME ADDRESS by Tai-Sup Lee Pres
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WELCOME ADDRESS by Keun-Pil Park Di
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CONGRATULATORY ADDRESS by David Pri
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PART I GAS HYDRATE: EXPLORATION, RE
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Partial differential equations for
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RESULTS AND DISCUSSION In the follo
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REFERENCES Berner R. A. (1980) Earl
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features of the seabed than those o
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secure the stability of the solutio
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trends depending on the following f
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Organic carbon in sediments is of i
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Sedimentological and Geochemical As
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Figure 3. Sedimentation rate of the
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Marine Gas Hydrate off W. Canada an
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Several methods for computing the Q
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0.035 0.03 Amplitude 0.025 0.02 0.0
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60 50 Amplitude 40 30 20 10 0 0 50
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REFERENCES Dallimore, S.R. and T.S.
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Frequency % 20 16 12 8 HAMA #5, MV=
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Figure 3. Experimental procedures f
Page 50 and 51:
Figure 7 shows two cases of the com
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Seismic Characteristics of Gas Hydr
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Purpose The purpose of this paper i
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The dissociation zone created by th
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hydrate that forms near the wellbor
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dissociation, composite thermal con
Page 62 and 63: Figure 9. The Advanced Light Source
Page 64 and 65: Experimental Studies and Developmen
Page 66 and 67: Natural gas hydrate exploitation an
Page 68 and 69: Natural gas Free gas layer Figure 5
Page 70 and 71: Figure 7. One-dimensional developme
Page 72 and 73: Temper at ur e 2 1 0 -1 -2 -3 -4
Page 74 and 75: From the above discussion, the heat
Page 76 and 77: INTRODUCTION Clathrate hydrates are
Page 78 and 79: MATHEMATICAL MODEL The mathematical
Page 80 and 81: Where the hydrate-aqueous radius of
Page 82 and 83: REFERENCES Brooks, R.H., and A.T. C
Page 84 and 85: 86 New Energy Resources in the CCOP
Page 86 and 87: In this paper, an overview of the M
Page 88 and 89: The brief tasks in the Phase I are:
Page 90 and 91: In "Development of the dissociation
Page 92 and 93: Figure 5. Preparation equipment. AN
Page 94 and 95: Other recent research subjects in t
Page 96 and 97: same crystalline structure directly
Page 98 and 99: Another important aspect of the pre
Page 100 and 101: a + CO 2 CH 4 C 2 H 6 b CH 4 in sII
Page 102 and 103: REFERENCES Collett, T.S. and Kuuskr
Page 104 and 105: Figure 1. Physiographic and crust m
Page 106 and 107: Figure 3. Seismic profile showing s
Page 108 and 109: Figure 7. Distribution of echo char
Page 110 and 111: Figure 10. Seismic profile and its
Page 114 and 115: PART II COALBED METHANE (CBM)
Page 116 and 117: Supply and demand infrastructure of
Page 118 and 119: Amisan, Jogyeri, Baegunsa, and Seon
Page 120 and 121: PROPERTIES OF ANTHRACITE The coals
Page 122 and 123: Table 4. Average chemical compositi
Page 124 and 125: CONCLUSIONS 1. Most of the coals em
Page 126 and 127: INTRODUCTION Coal (total reserves 2
Page 128 and 129: ีีีีีีีีี ั ิ
Page 130 and 131: RESULTS By Government: The outcomes
Page 132 and 133: The gas composition (12 samples ana
Page 134 and 135: Table 4. Coal Depth Interval Hole N
Page 136 and 137: The results of studies made on 11 c
Page 138 and 139: CONCLUSION CBM is still hoped to be
Page 140 and 141: The Government of Indonesia through
Page 142 and 143: The Berau basin is a major coal pro
Page 144 and 145: PP: CBM - 1 Rambutan (GOI Sponsor)
Page 146 and 147: Overview of Project for CO 2 Seques
Page 148 and 149: The organic geochemistry research g
Page 150 and 151: 3.5 25 3.0 20 Ar(%) C O 2(%) 2.5 2
Page 152 and 153: 20 8 10 0 6 δ13C of CO2(‰) -10 -
Page 154 and 155: Figure 1. Index map of Akabira Coal
Page 156: ORIGIN OF AKABIRA CBM In Akabira mi
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