NDLI: Impact of CO$_{2}$ Injection on Flow Behavior of Coalbed Methane Reservoirs

Content Provider	Springer Nature Link
Author	Harpalani, Satya Mitra, Abhijit
Copyright Year	2009
Abstract	On the basis of observations at four enhanced coalbed methane (ECBM)/CO$_{2}$ sequestration pilots, a laboratory-scale study was conducted to understand the flow behavior of coal in a methane/CO$_{2}$ environment. Sorption-induced volumetric strain was first measured by flooding fresh coal samples with adsorptive gases (methane and CO$_{2}$). In order to replicate the CO$_{2}$–ECBM process, CO$_{2}$ was then injected into a methane-saturated core to measure the incremental “swelling.” As a separate effort, the permeability of a coal core, held under triaxial stress, was measured using methane. This was followed by CO$_{2}$ flooding to replace the methane. In order to best replicate the conditions in situ, the core was held under uniaxial strain, that is, no horizontal strain was permitted during CO$_{2}$ flooding. Instead, the horizontal stress was adjusted to ensure zero strain. The results showed that the relative strain ratio for CO$_{2}$/methane was between 2 and 3.5. The measured volumetric strains were also fitted using a Langmuir-type model, thus enabling calculation of the strain at any gas pressure and using the analytical permeability models. For permeability work, effort was made to increase the horizontal stress to achieve the desired zero horizontal strain condition expected under in situ condition, but this became impossible because the “excess” stress required to maintain this condition was very large, resulting in sample failure. Finally, when CO$_{2}$ was introduced and horizontal strain was permitted, permeability reduction was an order of magnitude greater, suggesting that the “excess” stress would have reduced it significantly further. The positive finding of the work was that the “excess” stresses associated with injection of CO$_{2}$ are large. The excess stresses generated might be sufficient to cause microfracturing and increased permeability, and improved injectivity. Also, there might be a weakening effect resulting from repeated CO$_{2}$ injection, as has been found to be the case with thermal cycling of rocks.
Starting Page	141
Ending Page	156
Page Count	16
File Format	PDF
ISSN	01693913
Journal	Transport in Porous Media
Volume Number	82
Issue Number	1
e-ISSN	15731634
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-10-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Enhanced coalbed methane recovery CO$_{2}$ sequestration Permeability Matrix swelling Matrix shrinkage Classical Continuum Physics Hydrogeology Civil Engineering Industrial Chemistry/Chemical Engineering Geotechnical Engineering
Content Type	Text
Resource Type	Article
Subject	Catalysis

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A New Coal-Permeability Model: Internal Swelling Stress and Fracture–Matrix Interaction

Laboratory and Simulation Investigation of Enhanced Coalbed Methane Recovery by Gas Injection

Injection, Flow, and Mixing of CO$_{2}$ in Porous Media with Residual Gas

Modeling coal matrix shrinkage and differential swelling with co2 injection for enhanced coalbed methane recovery and carbon sequestration applications (2002).

Experimental Study of Pore-Scale Mechanisms of Carbonated Water Injection

Competitive Methane Desorption by Supercritical CO$_{2}$ Injection in Coal

A multi-scale model for CO$_{2}$ sequestration enhanced coalbed methane recovery

Supercritical CO$_{2}$-Brine Relative Permeability Experiments in Reservoir Rocks—Literature Review and Recommendations

A Computational Approach to Determine Average Reservoir Pressure in a Coalbed Methane (CBM) Well Flowing Under Dominant Matrix Shrinkage Effect

Impact of CO$_{2}$ Injection on Flow Behavior of Coalbed Methane Reservoirs

Similar Documents

A New Coal-Permeability Model: Internal Swelling Stress and Fracture–Matrix Interaction

Laboratory and Simulation Investigation of Enhanced Coalbed Methane Recovery by Gas Injection

Injection, Flow, and Mixing of CO$_{2}$ in Porous Media with Residual Gas

Modeling coal matrix shrinkage and differential swelling with co2 injection for enhanced coalbed methane recovery and carbon sequestration applications (2002).

Experimental Study of Pore-Scale Mechanisms of Carbonated Water Injection

Competitive Methane Desorption by Supercritical CO$_{2}$ Injection in Coal

A multi-scale model for CO$_{2}$ sequestration enhanced coalbed methane recovery

Supercritical CO$_{2}$-Brine Relative Permeability Experiments in Reservoir Rocks—Literature Review and Recommendations

A Computational Approach to Determine Average Reservoir Pressure in a Coalbed Methane (CBM) Well Flowing Under Dominant Matrix Shrinkage Effect

Impact of CO$_{2}$ Injection on Flow Behavior of Coalbed Methane Reservoirs