Strategizing well locations in unconfined, heterogeneous hydrate reservoirs for maximizing gas production
Choudhary, Neelam and Phirani, Jyoti (2023) Strategizing well locations in unconfined, heterogeneous hydrate reservoirs for maximizing gas production. Gas Science and Engineering, 116. 205042. ISSN 2949-9089 (https://doi.org/10.1016/j.jgsce.2023.205042)
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Abstract
Natural gas hydrates are a potential alternative to conventional energy due to their high energy density and low carbon with wide distribution across the globe. Producing methane from the gas hydrate reservoirs is technically challenging as they are present in complex geological environments which are highly heterogeneous. In this work, using numerical reservoir simulations of gas production from oceanic gas-hydrate reservoirs underlain with an aquifer we show that warm-water injection is necessary when the water layer below the hydrates is unconfined. Our simulations reveal that the aquifer characterization is essential to design the gas production strategy and estimating the gas recovery. We demonstrate that for a gas-hydrate reservoir attached to a moderately unconfined aquifer, warm-water injection in the hydrate-zone leads to more recovery. If the hydrate-zone is layered then the gas recovery improves by injecting the water into a more porous layer. However, for highly unconfined reservoirs water should be injected near the aquifer for efficient recovery of gas. Our findings will help in developing gas production plans from the hydrate reservoirs around the world.
ORCID iDs
Choudhary, Neelam and Phirani, Jyoti ORCID: https://orcid.org/0000-0002-9084-5028;-
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Item type: Article ID code: 85870 Dates: DateEvent31 August 2023Published15 June 2023Published Online9 June 2023AcceptedSubjects: Technology > Engineering (General). Civil engineering (General) Department: Faculty of Engineering > Civil and Environmental Engineering Depositing user: Pure Administrator Date deposited: 20 Jun 2023 14:39 Last modified: 18 Sep 2024 03:40 URI: https://strathprints.strath.ac.uk/id/eprint/85870