The Proceedings of
The Seventh (2007) ISOPE
OCEAN MINING (& GAS HYDRATES)
SYMPOSIUM

Lisbon, Portugal, July 1-6, 2007

2007



ISBN 978-1-880653-69-2

ISBN 1-880653-69-9

Indexed by Engineering Index, Compendex and Others

www.isope.org: orders@isope.org

International Society of
Offshore and Polar Engineers

The Proceedings of
The Seventh (2007) ISOPE
OCEAN MINING (& GAS HYDRATES)
SYMPOSIUM

Lisbon, Portugal, July 1—6, 2007

Environment, Mining Systems and Technology, Gas Hydrates, Deep-Ocean Water Upwelling, Exploration and Survey and Processing Technology

ISBN 978-1-880653-69-2

ISBN 1-880653-69-9

Indexed by Engineering Index, Compendex and Others

www.isope.org

orders@isope.org

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Edited by:

Jin S. Chung, ISOPE, Cupertino, California, USA

Takeshi Komai, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan

Presented at:

The Seventh (2007) ISOPE Ocean Mining (& Gas Hydrates) Symposium held in Lisbon, Portugal, July 1-6, 2007

Organized by:

International Society of Offshore and Polar Engineers

Sponsored by:

International Society of Offshore and Polar Engineers (ISOPE)

The publisher and the editors of its publications assume no responsibility for the statements or opinions expressed in papers or presentations by the contributors to this conference or proceedings.

International Society of Offshore and Polar Engineers (ISOPE)
P.O. Box 189, Cupertino, California 95015-0189  USA

CONTENT

OPENING SESSION

Status Report on Deep Sea Drilling Vessel "CHIKYU" -Design and SIT Operation-

Masanori Kyo, Yoshio Isozaki, Kazuyasu Wada, Motoki Kobashi, Eigo Miyazaki, Tomoya Inoue and Yasuhiro Namba

1

The Dawning of Deep Sea Mining of Metallic Sulfides: The Geologic Perspective

Steven D. Scott

6

Identification of Factors and Conditions Potentially Responsible for the Buried Nodules Occurrence in the Eastern Clarion-Clipperton Zone (NE Pacific)

Ryszard Kotlinski and Valcana Stoyanova

12

Economic Evaluation of CO2 Ocean Sequestration in Korea

Se.Hun Park, Suk.Jae Kwon, and Wee.Yeong Oh

15

DEEP OCEAN WATER

Three Years Operation of Ocean Nutrient Enhancer TAKUMI in Sagami BayArea

Kazuyuki Ouchi

21

Strain Measurement on Riser Pipe of "TAKUMI"

Katsuya MAEDA, Ichihiko TAKAHASHI, Hiroaki MIYABE and Satoshi MASUDA

27

Ecological Footprint Accounting of "TAKUMI"

Koji Otsuka

33

Investigation of Potential Sites for Deep Ocean Water Development in Taiwan

Ta-Kang Liu, Hwung-Hweng Hwung, Jin-Li Yu and Ruey-Chy Kao

39

GAS HYDRATES

An Experimental Investigation on Rheology of Condensate Oil/tetrahydrofuran Hydrate Slurry

Hai-Yuan Yao, Qing-Ping Li, Guang-Jin Chen and Jing Gong

44

Compaction Behavior of Toyoura Sand during Methane Hydrate Dissociation

Kazuo Aoki, Akira Masui, Hironori Haneda and Yuji Ogata

48

Mechanical Properties of Sandy Sediment Containing Marine Gas Hydrates

Akira Masui, Hironori Haneda, Yuji Ogata and Kazuo Aoki

53

Variable-Compliance-Type Constitutive Model for Toyoura Sand Containing Methane Hydrate

Kuniyuki Miyazaki, Akira Masui, Hironori Haneda, Yuji Ogata, Kazuo Aoki and Tsutomu Yamaguchi

57

Simulation of Triaxial Compression Tests on Soil Samples Obtained from Seabed Ground in Deep Sea by Elasto-viscoplastic Constitutive Equation

E. Ogisako, S. Nishio, A. Denda, F. Oka and S. Kimoto

63

Estimation of Surface Area of Methane Hydrate in Sediments

Takafumi Nakayama, Keiichi Ogasawara, Fumio Kiyono, Akihiro Yamasaki and Toru Sato

69

Seafloor Displacement Monitoring by Double Integral Technique Using Servo-accelerometer System

Tatsuya Yokoyama, Hideki Saito, Hiroshi Kameya and Shigekazu Uchiyama

75

Experimental Study on Steam Injection Method using Methane Hydrate Core Samples.

T. Kawamura, M. Ohtake, Y .Sakamoto, Y. Yamamoto, H. Haneda, T. Komai and S. Higuchi

83

Measurement of Methane Hydrate Sediment Permeability Using Ueveral Chemical Solutions as Inhibitors

Hideki Minagawa, Yusunori Nishikawa, Ikuko Ikeda, Yasuhide Sakamoto, Takeshi Komai and Hideo Narita

87

Assessment of the Absolute Permeability of Natural Methane Hydrate Sediments by Microfocus X-ray Computed Tomography

Yusuke Jin, Jiro Nagao, Junko Hayashi, Kiyofumi Suzuki, Hideki Minagawa, Takao Ebinuma and Hideo Narita

93

The Experimental Studies and Development Concept for the Offshore Natural Gas Hydrate

Qingping Li, Hengyi Zeng, Weiliang Dong, Zhijun Wang, Zi-Ping Feng, Liang-Guang Tang and Xiao-Sen Li

97

Field Scale Simulation for the Effect of Relative Permeability on Dissociation and Gas Production Behavior during Depressurization Process of Methane Hydrate in Marine Sediments

Y. Sakamoto, T. Komai, T. Kawamura, N. Tenma and T. Yamaguchi

102

Permeability of Artificial Methane Hydrate Sediment in Radial Flow System

M. Shimokawara, K. Ohga, Y. Sakamoto, T. Komai and T. Yamaguchi

108

Observation of the Self-preservation Effect of Methane and Ethane Hydrate

Noriyuki Shimomura, Jiro Nagao, Yusuke Jin, Wataru Shimada, Takao Ebinuma and Hideo Narita

113

Complex Structure Transition Induced by Swapping Process Occurring in Natural Gas Hydrate Layer

Jiwoong Seol, Sun-Hwa Yeon, Youngjune Park, Do-Youn Kim, Jong-Won Lee, Ji-Ho Yoon and Huen Lee

119

Experimental Study on Formation of Propane Gas Hydrate by Fluidized Bed Type Reactor

T. Arai, Y. Kato, T. Iwasaki, N. Kanda and K. Uchida

124

Preliminary Modeling of Chemosynthetic Ecosystem around Methane Seepage

Rika Takeuchi, Tetsuo Yamazaki, Daisuke Monoe, Tomoaki Oomi, Kisaburo Nakata and Tomohiko Fukushima

128

DEEP-OCEAN MINERALS EXPLORATION AND MICROPLANKTON SAMPLER

Applicability Evaluation of the Surface-wave Exploration to the River Marine Geology Investigation

Hisashi Fujimura, Toshihiko Tanaka Oyo, Takaho Kita, Koichi Hayashi, Masanori Saitou and Tomohiro Kamoshita

135

Concentrated and Gastight Sampler of Deep-sea Microplankton

Zhonghua Huang

141

Metamodel-based Multidisciplinary Design Optimization of Ocean-Mining Vehicle System

Min Uk Lee, Jae Jun Jung, Jung Hun Yoo, Tae Hee Lee, Sup Hong, Hyung Woo Kim, and Jong Su Choi

146

DEEP-OCEAN MINING SYSTEMS AND TECHNOLOGY

Simulation of Motion Performance for a Cobalt Crust Miner on Seamounts

Li Li, Shaojun Liu, Changbin Wu, Yuqing Gao and Ning Yang

153

Separation of Manganese Nodules from Solid-liquid Mixture Using Hydrocyclone

Yong-Chan Park, Chi-Ho Yoon, Young-Ju Kim, Dong-Kil Lee, Jong-Myung Park and Seok-ki Kwon

158

A Study on the Solid-Liquid Helical Flow in a slim hole annulus

Young-Ju Kim, Chi-Ho Yoon, Yong-Chan Park, Jongmyung Park, Seok-Ki Kwon, Young Kyu Hwang and Nam Sub Woo

162

Development and Testing of Underwater Mining Systems for Long Term Operations using Flexible Riser Concept

Deepak C.R, S. Ramji, N.R. Ramesh, S.M. Babu, Raju Abraham, Shajahan M. A and Atmanand M.A

166

Three Dimensional Solid-liquid Flow Analysis for Design of Two-stage Lifting Pump

Jong-Myung Park, Chi-Ho Yoon, Yong-Chan Park, Young-Ju Kim, Dong-Kil Lee and Seok-ki Kwon

171

COMRA's Research on Lifting Motor Pump

Weisheng Zou

177

Effect of Particle Size and Concentration on Flow Behavior of Complex Slurries

Pavel Vlasak and Zdenek Chara

181

Two-phase Vertically Upward Transport of Silica Sands in Dilute Polymer Solution: Drag Reduction and Effects of Sand Size and Concentration

Jin S. Chung, K. Lee and A. Tischler

188

Movement of Solid Particles in Vertical Pipe

Jerzy Sobota, Jan Palarski, Franciszek Plewa, and Grzegorz Strozik

197

Analysis of Two-phase Mixture Flow in Vertical Pipeline

Jan Palarski, Franciszek Plewa, Jerzy Sobota and Grzegorz Strozik

201