Numerical simulations of methane hydrate particles around the bottom of the recovery pipe of the gas-lift method

Yosuke Matsukawa, Masahiro Miwa, Gen Inoue, Masaki Minemoto

Research output: Contribution to journalArticle

Abstract

Methane hydrate has recently attracted attention as a potential energy resource, which might be recovered from the deep seabed by means of a gas lift recovery system. This study examined the flow of seawater and behavior of hydrate particles around the bottom of the riser pipe by simulation and experiment in order to determine the optimal shape of the bottom of the pipe and the optimal operating conditions. The finite differential method and the discrete element method were combined to simulate the governing equations of sea water as a continuum and hydrate particles as discrete elements. The simulation results agreed reasonably well with the experimental results conducted for the laboratory-scale riser pipe with height of 1.5 m and diameter of 0.05 m. The simulations for the actual scale with diameter of 1m showed that the optimal shape at the bottom of the rise pipe is umbrella-shaped with a 45° degree slope and height of 0.4-0.6 m. The simulations also showed that the gas-lift method is sufficiently effective and economical if the hydrate layer at the seabed can be crushed into small pieces with diameter of 0.1m.

Original languageEnglish
Pages (from-to)149-156
Number of pages8
JournalKagaku Kogaku Ronbunshu
Volume36
Issue number2
DOIs
Publication statusPublished - Apr 1 2010

Fingerprint

Gas lifts
Methane
Hydrates
Pipe
Recovery
Computer simulation
Energy resources
Potential energy
Seawater
Finite difference method
Water
Experiments

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Numerical simulations of methane hydrate particles around the bottom of the recovery pipe of the gas-lift method. / Matsukawa, Yosuke; Miwa, Masahiro; Inoue, Gen; Minemoto, Masaki.

In: Kagaku Kogaku Ronbunshu, Vol. 36, No. 2, 01.04.2010, p. 149-156.

Research output: Contribution to journalArticle

Matsukawa, Yosuke ; Miwa, Masahiro ; Inoue, Gen ; Minemoto, Masaki. / Numerical simulations of methane hydrate particles around the bottom of the recovery pipe of the gas-lift method. In: Kagaku Kogaku Ronbunshu. 2010 ; Vol. 36, No. 2. pp. 149-156.
@article{e3be96363d6b4d04981d0c56771dd0dd,
title = "Numerical simulations of methane hydrate particles around the bottom of the recovery pipe of the gas-lift method",
abstract = "Methane hydrate has recently attracted attention as a potential energy resource, which might be recovered from the deep seabed by means of a gas lift recovery system. This study examined the flow of seawater and behavior of hydrate particles around the bottom of the riser pipe by simulation and experiment in order to determine the optimal shape of the bottom of the pipe and the optimal operating conditions. The finite differential method and the discrete element method were combined to simulate the governing equations of sea water as a continuum and hydrate particles as discrete elements. The simulation results agreed reasonably well with the experimental results conducted for the laboratory-scale riser pipe with height of 1.5 m and diameter of 0.05 m. The simulations for the actual scale with diameter of 1m showed that the optimal shape at the bottom of the rise pipe is umbrella-shaped with a 45° degree slope and height of 0.4-0.6 m. The simulations also showed that the gas-lift method is sufficiently effective and economical if the hydrate layer at the seabed can be crushed into small pieces with diameter of 0.1m.",
author = "Yosuke Matsukawa and Masahiro Miwa and Gen Inoue and Masaki Minemoto",
year = "2010",
month = "4",
day = "1",
doi = "10.1252/kakoronbunshu.36.149",
language = "English",
volume = "36",
pages = "149--156",
journal = "Kagaku Kogaku Ronbunshu",
issn = "0386-216X",
publisher = "The Society of Chemical Engineers, Japan",
number = "2",

}

TY - JOUR

T1 - Numerical simulations of methane hydrate particles around the bottom of the recovery pipe of the gas-lift method

AU - Matsukawa, Yosuke

AU - Miwa, Masahiro

AU - Inoue, Gen

AU - Minemoto, Masaki

PY - 2010/4/1

Y1 - 2010/4/1

N2 - Methane hydrate has recently attracted attention as a potential energy resource, which might be recovered from the deep seabed by means of a gas lift recovery system. This study examined the flow of seawater and behavior of hydrate particles around the bottom of the riser pipe by simulation and experiment in order to determine the optimal shape of the bottom of the pipe and the optimal operating conditions. The finite differential method and the discrete element method were combined to simulate the governing equations of sea water as a continuum and hydrate particles as discrete elements. The simulation results agreed reasonably well with the experimental results conducted for the laboratory-scale riser pipe with height of 1.5 m and diameter of 0.05 m. The simulations for the actual scale with diameter of 1m showed that the optimal shape at the bottom of the rise pipe is umbrella-shaped with a 45° degree slope and height of 0.4-0.6 m. The simulations also showed that the gas-lift method is sufficiently effective and economical if the hydrate layer at the seabed can be crushed into small pieces with diameter of 0.1m.

AB - Methane hydrate has recently attracted attention as a potential energy resource, which might be recovered from the deep seabed by means of a gas lift recovery system. This study examined the flow of seawater and behavior of hydrate particles around the bottom of the riser pipe by simulation and experiment in order to determine the optimal shape of the bottom of the pipe and the optimal operating conditions. The finite differential method and the discrete element method were combined to simulate the governing equations of sea water as a continuum and hydrate particles as discrete elements. The simulation results agreed reasonably well with the experimental results conducted for the laboratory-scale riser pipe with height of 1.5 m and diameter of 0.05 m. The simulations for the actual scale with diameter of 1m showed that the optimal shape at the bottom of the rise pipe is umbrella-shaped with a 45° degree slope and height of 0.4-0.6 m. The simulations also showed that the gas-lift method is sufficiently effective and economical if the hydrate layer at the seabed can be crushed into small pieces with diameter of 0.1m.

UR - http://www.scopus.com/inward/record.url?scp=77953655152&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77953655152&partnerID=8YFLogxK

U2 - 10.1252/kakoronbunshu.36.149

DO - 10.1252/kakoronbunshu.36.149

M3 - Article

AN - SCOPUS:77953655152

VL - 36

SP - 149

EP - 156

JO - Kagaku Kogaku Ronbunshu

JF - Kagaku Kogaku Ronbunshu

SN - 0386-216X

IS - 2

ER -