gas hydrate - CCOP

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Organic carbon in sediments is of importance for biogenically originating gas. Sediments from the Dongsha area, Xisha Trench and Zhongjiannan areas are rich in organic carbon and contain several kinds of authigenic minerals related to disassociation of gas hydrates in sediments. The sediment records imply that the Dongsha area, Xisha Trench and Zhongjiannan area are of possible importance for the exploration of gas hydrates. 24 New Energy Resources in the CCOP Region - Gas Hydrates and Coalbed Methane
Gas Hydrate Research on the North Slope of the South China Sea, China Wu Nengyou 1) , Zhang Hongtao 2) , Huang Yongyang 1) , Yang Shengxiong 1) , Zhang Haiqi 2) , Zhang Guangxue 1) , Zhao Hongwei 2) , Liang Jinqiang 1) and Wang Hongbin 1) 1) Guangzhou Marine Geological Survey, CGS, Guangzhou 510075, P. R. China 2) China Geological Survey, Beijing 100011, P. R. China ABSTRACT: The north slope of South China Sea is a characteristic Cenozoic passive continental margin and is rich in oil and gas bearing basins. As a result, the geological and tectonic settings, the temperature and pressure regimes, and the methane-generating potential from the thick organic-rich sediments are all favorable for gas hydrate formation. Since 2001, the Guangzhou Marine Geological Survey (GMGS) has continuously carried out geological, geophysical and geochemical investigations for gas hydrate in the northern South China Sea. In this paper, the progress of gas hydrate research in the north slope of the South China Sea in the past five years is reviewed. The evidence for gas hydrate’s existence is currently considerable. Seismic data shows a well-developed BSR in profiles perpendicular to the SE-facing slope of the NE South China Sea. A certain degree of reprocessing and/or closer examination reveals the acoustic anomaly patterns. Studies of velocity structure of hydrated sediments are useful for better understanding the distribution of gas hydrates. The unambiguous images of bacterial mats, gas hydrate-derived carbonates and vent-clams have been obtained from a self-contained deep-towed photographic system. A lot of carbonate and clam samples were recovered by TV-guided grab. A number of geochemical anomalies may be related to the formation and dissociation of gas hydrates, including the headspace gas in sediments, carbon isotopes of methane, downward and spatial profiles of Cl - , SO 4 2- and major cations (e.g., Ca, Mg, Ba, Sr, B, and NH 4 ) contents, and 18 O, D, 11 B, and 87 Sr/ 86 Sr ratios of the pore waters. New Energy Resources in the CCOP Region - Gas Hydrates and Coalbed Methane 25
Page 2 and 3: Coordinating Committee for Geoscien
Page 4 and 5: Thematic Session on New Energy Reso
Page 6 and 7: CONTENTS Page OPENING REMARKS……
Page 8 and 9: OPENING REMARKS by Chen Shik Pei Di
Page 10 and 11: WELCOME ADDRESS by Tai-Sup Lee Pres
Page 12 and 13: WELCOME ADDRESS by Keun-Pil Park Di
Page 14 and 15: CONGRATULATORY ADDRESS by David Pri
Page 16 and 17: PART I GAS HYDRATE: EXPLORATION, RE
Page 18 and 19: Partial differential equations for
Page 20 and 21: RESULTS AND DISCUSSION In the follo
Page 22 and 23: REFERENCES Berner R. A. (1980) Earl
Page 24 and 25: features of the seabed than those o
Page 26 and 27: secure the stability of the solutio
Page 28 and 29: trends depending on the following f
Page 32 and 33: Sedimentological and Geochemical As
Page 34 and 35: Figure 3. Sedimentation rate of the
Page 36 and 37: Marine Gas Hydrate off W. Canada an
Page 38 and 39: Several methods for computing the Q
Page 40 and 41: 0.035 0.03 Amplitude 0.025 0.02 0.0
Page 42 and 43: 60 50 Amplitude 40 30 20 10 0 0 50
Page 44 and 45: REFERENCES Dallimore, S.R. and T.S.
Page 46 and 47: Frequency % 20 16 12 8 HAMA #5, MV=
Page 48 and 49: Figure 3. Experimental procedures f
Page 50 and 51: Figure 7 shows two cases of the com
Page 52 and 53: Seismic Characteristics of Gas Hydr
Page 54 and 55: Purpose The purpose of this paper i
Page 56 and 57: The dissociation zone created by th
Page 58 and 59: hydrate that forms near the wellbor
Page 60 and 61: 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
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86 New Energy Resources in the CCOP
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In this paper, an overview of the M
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The brief tasks in the Phase I are:
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In "Development of the dissociation
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Figure 5. Preparation equipment. AN
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Other recent research subjects in t
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same crystalline structure directly
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Another important aspect of the pre
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a + CO 2 CH 4 C 2 H 6 b CH 4 in sII
Page 102 and 103:
REFERENCES Collett, T.S. and Kuuskr
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Figure 1. Physiographic and crust m
Page 106 and 107:
Figure 3. Seismic profile showing s
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Figure 7. Distribution of echo char
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Figure 10. Seismic profile and its
Page 112 and 113:
In the early stage of back-arc open
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PART II COALBED METHANE (CBM)
Page 116 and 117:
Supply and demand infrastructure of
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Amisan, Jogyeri, Baegunsa, and Seon
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PROPERTIES OF ANTHRACITE The coals
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Table 4. Average chemical compositi
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CONCLUSIONS 1. Most of the coals em
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INTRODUCTION Coal (total reserves 2
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ีีีีีีีีี ั ิ
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RESULTS By Government: The outcomes
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The gas composition (12 samples ana
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Table 4. Coal Depth Interval Hole N
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The results of studies made on 11 c
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CONCLUSION CBM is still hoped to be
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The Government of Indonesia through
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The Berau basin is a major coal pro
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PP: CBM - 1 Rambutan (GOI Sponsor)
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Overview of Project for CO 2 Seques
Page 148 and 149:
The organic geochemistry research g
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3.5 25 3.0 20 Ar(%) C O 2(%) 2.5 2
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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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