Thermo-hydro-mechanical-chemical couplings controlling CH4 production and CO2 sequestration in enhanced coalbed methane recovery

Chaojun Fan, Derek Elsworth, Sheng Li, Lijun Zhou, Zhenhua Yang, Yu Song

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We explore the fully coupled thermo-hydro-mechanical-chemical (THMC) response of CO2 enhanced CBM recovery (CO2-ECBM) considering the coupling relationships of competitive sorption of binary gas and dissolved gas in water (C), gas and water transport in two phase flow (H), thermal expansion and non-isothermal gas sorption (T), and coal deformation (M). The THMC model is developed, validated then applied to simulate CO2 enhanced recovery. Parametric studies are completed, systematically switching-off components of the thermal (T) and hydraulic (H) coupling, to provide insights into key processes controlling ECBM recovery and key factors. The evolution of permeability is strongly dependent on coal matrix swelling/shrinkage induced by gas adsorption/desorption, expansion by thermal effects, and compaction by effective stress. Reservoir permeability first decreases, then rebounds before continuously decreasing to low magnitude. Ignoring the impact of water migration overestimates CH4 production, and ignoring heat transfer underestimates. The high injection pressure and initial permeability will promote fluid mixture transport, resulting in an increase in production and sequestration; conversely, high injection temperature and water saturation will result in a decrease. Delaying injection start time is shown to counter the low average production rate and early CO2 breakthrough resulting from early injection (beginning at ∼2500 days for this case).

Original languageEnglish (US)
Pages (from-to)1054-1077
Number of pages24
JournalEnergy
Volume173
DOIs
StatePublished - Apr 15 2019

Fingerprint

Enhanced recovery
Recovery
Gases
Sorption
Water
Coal
Gas adsorption
Two phase flow
Thermal effects
Thermal expansion
Swelling
Desorption
Compaction
Hydraulics
Heat transfer
Hydrogen
Fluids
Coal bed methane
Temperature
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Fan, Chaojun ; Elsworth, Derek ; Li, Sheng ; Zhou, Lijun ; Yang, Zhenhua ; Song, Yu. / Thermo-hydro-mechanical-chemical couplings controlling CH4 production and CO2 sequestration in enhanced coalbed methane recovery. In: Energy. 2019 ; Vol. 173. pp. 1054-1077.
@article{d149db28ed404766b24cf7f6bf7d3fdc,
title = "Thermo-hydro-mechanical-chemical couplings controlling CH4 production and CO2 sequestration in enhanced coalbed methane recovery",
abstract = "We explore the fully coupled thermo-hydro-mechanical-chemical (THMC) response of CO2 enhanced CBM recovery (CO2-ECBM) considering the coupling relationships of competitive sorption of binary gas and dissolved gas in water (C), gas and water transport in two phase flow (H), thermal expansion and non-isothermal gas sorption (T), and coal deformation (M). The THMC model is developed, validated then applied to simulate CO2 enhanced recovery. Parametric studies are completed, systematically switching-off components of the thermal (T) and hydraulic (H) coupling, to provide insights into key processes controlling ECBM recovery and key factors. The evolution of permeability is strongly dependent on coal matrix swelling/shrinkage induced by gas adsorption/desorption, expansion by thermal effects, and compaction by effective stress. Reservoir permeability first decreases, then rebounds before continuously decreasing to low magnitude. Ignoring the impact of water migration overestimates CH4 production, and ignoring heat transfer underestimates. The high injection pressure and initial permeability will promote fluid mixture transport, resulting in an increase in production and sequestration; conversely, high injection temperature and water saturation will result in a decrease. Delaying injection start time is shown to counter the low average production rate and early CO2 breakthrough resulting from early injection (beginning at ∼2500 days for this case).",
author = "Chaojun Fan and Derek Elsworth and Sheng Li and Lijun Zhou and Zhenhua Yang and Yu Song",
year = "2019",
month = "4",
day = "15",
doi = "10.1016/j.energy.2019.02.126",
language = "English (US)",
volume = "173",
pages = "1054--1077",
journal = "Energy",
issn = "0360-5442",
publisher = "Elsevier Limited",

}

Thermo-hydro-mechanical-chemical couplings controlling CH4 production and CO2 sequestration in enhanced coalbed methane recovery. / Fan, Chaojun; Elsworth, Derek; Li, Sheng; Zhou, Lijun; Yang, Zhenhua; Song, Yu.

In: Energy, Vol. 173, 15.04.2019, p. 1054-1077.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Thermo-hydro-mechanical-chemical couplings controlling CH4 production and CO2 sequestration in enhanced coalbed methane recovery

AU - Fan, Chaojun

AU - Elsworth, Derek

AU - Li, Sheng

AU - Zhou, Lijun

AU - Yang, Zhenhua

AU - Song, Yu

PY - 2019/4/15

Y1 - 2019/4/15

N2 - We explore the fully coupled thermo-hydro-mechanical-chemical (THMC) response of CO2 enhanced CBM recovery (CO2-ECBM) considering the coupling relationships of competitive sorption of binary gas and dissolved gas in water (C), gas and water transport in two phase flow (H), thermal expansion and non-isothermal gas sorption (T), and coal deformation (M). The THMC model is developed, validated then applied to simulate CO2 enhanced recovery. Parametric studies are completed, systematically switching-off components of the thermal (T) and hydraulic (H) coupling, to provide insights into key processes controlling ECBM recovery and key factors. The evolution of permeability is strongly dependent on coal matrix swelling/shrinkage induced by gas adsorption/desorption, expansion by thermal effects, and compaction by effective stress. Reservoir permeability first decreases, then rebounds before continuously decreasing to low magnitude. Ignoring the impact of water migration overestimates CH4 production, and ignoring heat transfer underestimates. The high injection pressure and initial permeability will promote fluid mixture transport, resulting in an increase in production and sequestration; conversely, high injection temperature and water saturation will result in a decrease. Delaying injection start time is shown to counter the low average production rate and early CO2 breakthrough resulting from early injection (beginning at ∼2500 days for this case).

AB - We explore the fully coupled thermo-hydro-mechanical-chemical (THMC) response of CO2 enhanced CBM recovery (CO2-ECBM) considering the coupling relationships of competitive sorption of binary gas and dissolved gas in water (C), gas and water transport in two phase flow (H), thermal expansion and non-isothermal gas sorption (T), and coal deformation (M). The THMC model is developed, validated then applied to simulate CO2 enhanced recovery. Parametric studies are completed, systematically switching-off components of the thermal (T) and hydraulic (H) coupling, to provide insights into key processes controlling ECBM recovery and key factors. The evolution of permeability is strongly dependent on coal matrix swelling/shrinkage induced by gas adsorption/desorption, expansion by thermal effects, and compaction by effective stress. Reservoir permeability first decreases, then rebounds before continuously decreasing to low magnitude. Ignoring the impact of water migration overestimates CH4 production, and ignoring heat transfer underestimates. The high injection pressure and initial permeability will promote fluid mixture transport, resulting in an increase in production and sequestration; conversely, high injection temperature and water saturation will result in a decrease. Delaying injection start time is shown to counter the low average production rate and early CO2 breakthrough resulting from early injection (beginning at ∼2500 days for this case).

UR - http://www.scopus.com/inward/record.url?scp=85062151124&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85062151124&partnerID=8YFLogxK

U2 - 10.1016/j.energy.2019.02.126

DO - 10.1016/j.energy.2019.02.126

M3 - Article

AN - SCOPUS:85062151124

VL - 173

SP - 1054

EP - 1077

JO - Energy

JF - Energy

SN - 0360-5442

ER -