Experimental and computational evaluation of cyclic solvent injection in fractured tight hydrocarbon reservoirs

Experimental and computational evaluation of cyclic solvent injection in fractured tight hydrocarbon reservoirs

Abstract Multi-fractured horizontal wells have enabled commercial production from low-permeability (‘tight’) hydrocarbon reservoirs but recoveries remain exceedingly small (< 5–10%). As a result, operators have investigated the use of solvent (gas) injection schemes, such as huff-n-puff (HNP), to...

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Autores principales: Amin Ghanizadeh, Chengyao Song, Hamidreza Hamdi, Christopher R. Clarkson
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/8028d371944a498192672b1173b119bc
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spelling oai:doaj.org-article:8028d371944a498192672b1173b119bc2021-12-02T14:41:56ZExperimental and computational evaluation of cyclic solvent injection in fractured tight hydrocarbon reservoirs10.1038/s41598-021-88247-y2045-2322https://doaj.org/article/8028d371944a498192672b1173b119bc2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88247-yhttps://doaj.org/toc/2045-2322Abstract Multi-fractured horizontal wells have enabled commercial production from low-permeability (‘tight’) hydrocarbon reservoirs but recoveries remain exceedingly small (< 5–10%). As a result, operators have investigated the use of solvent (gas) injection schemes, such as huff-n-puff (HNP), to improve oil recovery. Previous HNP laboratory approaches, classified primary as ‘flow-through-matrix’ and ‘flow-around-matrix’ typically (1) are not fully representative of field conditions at near-fracture regions and (2) require long test times, even when performed on fractured cores. The objectives of this proof-of-concept study are to (1) design and implement a new experimental procedure that better reproduces HNP schemes in near-fracture regions and (2) use the results, simulated with a compositional lab-calibrated model, to explore the controls on enhanced hydrocarbon recovery in depleted tight oil plays. Performing multiple CO2 and (simplified) lean gas HNP cycles, the integrated experimental and simulation approach proposed herein achieves the ultimate recovery factors in a significantly shorter time frame (25–50%) compared to previous studies. The integrated experimental and computational approach proposed herein is valuable for core-based evaluation of cyclic solvent (CO2, CH4) injection in tight hydrocarbon reservoirs for (1) hydrocarbon recovery and (2) subsurface greenhouse (CO2, CH4) gas disposal/storage applications.Amin GhanizadehChengyao SongHamidreza HamdiChristopher R. ClarksonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Amin Ghanizadeh
Chengyao Song
Hamidreza Hamdi
Christopher R. Clarkson
Experimental and computational evaluation of cyclic solvent injection in fractured tight hydrocarbon reservoirs
description Abstract Multi-fractured horizontal wells have enabled commercial production from low-permeability (‘tight’) hydrocarbon reservoirs but recoveries remain exceedingly small (< 5–10%). As a result, operators have investigated the use of solvent (gas) injection schemes, such as huff-n-puff (HNP), to improve oil recovery. Previous HNP laboratory approaches, classified primary as ‘flow-through-matrix’ and ‘flow-around-matrix’ typically (1) are not fully representative of field conditions at near-fracture regions and (2) require long test times, even when performed on fractured cores. The objectives of this proof-of-concept study are to (1) design and implement a new experimental procedure that better reproduces HNP schemes in near-fracture regions and (2) use the results, simulated with a compositional lab-calibrated model, to explore the controls on enhanced hydrocarbon recovery in depleted tight oil plays. Performing multiple CO2 and (simplified) lean gas HNP cycles, the integrated experimental and simulation approach proposed herein achieves the ultimate recovery factors in a significantly shorter time frame (25–50%) compared to previous studies. The integrated experimental and computational approach proposed herein is valuable for core-based evaluation of cyclic solvent (CO2, CH4) injection in tight hydrocarbon reservoirs for (1) hydrocarbon recovery and (2) subsurface greenhouse (CO2, CH4) gas disposal/storage applications.
format article
author Amin Ghanizadeh
Chengyao Song
Hamidreza Hamdi
Christopher R. Clarkson
author_facet Amin Ghanizadeh
Chengyao Song
Hamidreza Hamdi
Christopher R. Clarkson
author_sort Amin Ghanizadeh
title Experimental and computational evaluation of cyclic solvent injection in fractured tight hydrocarbon reservoirs
title_short Experimental and computational evaluation of cyclic solvent injection in fractured tight hydrocarbon reservoirs
title_full Experimental and computational evaluation of cyclic solvent injection in fractured tight hydrocarbon reservoirs
title_fullStr Experimental and computational evaluation of cyclic solvent injection in fractured tight hydrocarbon reservoirs
title_full_unstemmed Experimental and computational evaluation of cyclic solvent injection in fractured tight hydrocarbon reservoirs
title_sort experimental and computational evaluation of cyclic solvent injection in fractured tight hydrocarbon reservoirs
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/8028d371944a498192672b1173b119bc
work_keys_str_mv AT aminghanizadeh experimentalandcomputationalevaluationofcyclicsolventinjectioninfracturedtighthydrocarbonreservoirs
AT chengyaosong experimentalandcomputationalevaluationofcyclicsolventinjectioninfracturedtighthydrocarbonreservoirs
AT hamidrezahamdi experimentalandcomputationalevaluationofcyclicsolventinjectioninfracturedtighthydrocarbonreservoirs
AT christopherrclarkson experimentalandcomputationalevaluationofcyclicsolventinjectioninfracturedtighthydrocarbonreservoirs
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