The Effect of Hydraulic Fracture Geometry on Well Productivity in Shale Oil Plays with High Pore Pressure

We propose three idealized hydraulic fracture geometries (“fracture scenarios”) likely to occur in shale oil reservoirs characterized by high pore pressure and low differential in situ stresses. We integrate these geometries into a commercial reservoir simulator (CMG-IMEX) and examine their effect o...

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Autores principales:	Daniela A. Arias Ortiz, Lukasz Klimkowski, Thomas Finkbeiner, Tadeusz W. Patzek
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	high pore pressure horizontal fractures natural fractures reverse faulting shale condensate and oil shale gas Technology T
Acceso en línea:	https://doaj.org/article/605997a7ffea4b31a3bb8df0f2c1d188
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spelling	oai:doaj.org-article:605997a7ffea4b31a3bb8df0f2c1d1882021-11-25T17:28:17ZThe Effect of Hydraulic Fracture Geometry on Well Productivity in Shale Oil Plays with High Pore Pressure10.3390/en142277271996-1073https://doaj.org/article/605997a7ffea4b31a3bb8df0f2c1d1882021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7727https://doaj.org/toc/1996-1073We propose three idealized hydraulic fracture geometries (“fracture scenarios”) likely to occur in shale oil reservoirs characterized by high pore pressure and low differential in situ stresses. We integrate these geometries into a commercial reservoir simulator (CMG-IMEX) and examine their effect on reservoir fluids production. Our first, reference fracture scenario includes only vertical, planar hydraulic fractures. The second scenario has stimulated vertical natural fractures oriented perpendicularly to the vertical hydraulic fractures. The third fracture scenario has stimulated horizontal bedding planes intersecting the vertical hydraulic fractures. This last scenario may occur in mudrock plays characterized by high pore pressure and transitional strike-slip to reverse faulting stress regimes. We demonstrate that the vertical and planar fractures are an oversimplification of the hydraulic fracture geometry in anisotropic shale plays. They fail to represent the stimulated volume geometric complexity in the reservoir simulations and may confuse hydrocarbon production forecast. We also show that stimulating mechanically weak bedding planes harms hydrocarbon production, while stimulated natural fractures may enhance initial production. Our findings reveal that stimulated horizontal bedding planes might decrease the cumulative hydrocarbon production by as much as 20%, and the initial hydrocarbon production by about 50% compared with the reference scenario. We present unique reservoir simulations that enable practical assessment of the impact of varied hydraulic fracture configurations on hydrocarbon production and highlight the importance of constraining present-day in situ stress state and pore pressure conditions to obtain a realistic hydrocarbon production forecast.Daniela A. Arias OrtizLukasz KlimkowskiThomas FinkbeinerTadeusz W. PatzekMDPI AGarticlehigh pore pressurehorizontal fracturesnatural fracturesreverse faultingshale condensate and oilshale gasTechnologyTENEnergies, Vol 14, Iss 7727, p 7727 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	high pore pressure horizontal fractures natural fractures reverse faulting shale condensate and oil shale gas Technology T
spellingShingle	high pore pressure horizontal fractures natural fractures reverse faulting shale condensate and oil shale gas Technology T Daniela A. Arias Ortiz Lukasz Klimkowski Thomas Finkbeiner Tadeusz W. Patzek The Effect of Hydraulic Fracture Geometry on Well Productivity in Shale Oil Plays with High Pore Pressure
description	We propose three idealized hydraulic fracture geometries (“fracture scenarios”) likely to occur in shale oil reservoirs characterized by high pore pressure and low differential in situ stresses. We integrate these geometries into a commercial reservoir simulator (CMG-IMEX) and examine their effect on reservoir fluids production. Our first, reference fracture scenario includes only vertical, planar hydraulic fractures. The second scenario has stimulated vertical natural fractures oriented perpendicularly to the vertical hydraulic fractures. The third fracture scenario has stimulated horizontal bedding planes intersecting the vertical hydraulic fractures. This last scenario may occur in mudrock plays characterized by high pore pressure and transitional strike-slip to reverse faulting stress regimes. We demonstrate that the vertical and planar fractures are an oversimplification of the hydraulic fracture geometry in anisotropic shale plays. They fail to represent the stimulated volume geometric complexity in the reservoir simulations and may confuse hydrocarbon production forecast. We also show that stimulating mechanically weak bedding planes harms hydrocarbon production, while stimulated natural fractures may enhance initial production. Our findings reveal that stimulated horizontal bedding planes might decrease the cumulative hydrocarbon production by as much as 20%, and the initial hydrocarbon production by about 50% compared with the reference scenario. We present unique reservoir simulations that enable practical assessment of the impact of varied hydraulic fracture configurations on hydrocarbon production and highlight the importance of constraining present-day in situ stress state and pore pressure conditions to obtain a realistic hydrocarbon production forecast.
format	article
author	Daniela A. Arias Ortiz Lukasz Klimkowski Thomas Finkbeiner Tadeusz W. Patzek
author_facet	Daniela A. Arias Ortiz Lukasz Klimkowski Thomas Finkbeiner Tadeusz W. Patzek
author_sort	Daniela A. Arias Ortiz
title	The Effect of Hydraulic Fracture Geometry on Well Productivity in Shale Oil Plays with High Pore Pressure
title_short	The Effect of Hydraulic Fracture Geometry on Well Productivity in Shale Oil Plays with High Pore Pressure
title_full	The Effect of Hydraulic Fracture Geometry on Well Productivity in Shale Oil Plays with High Pore Pressure
title_fullStr	The Effect of Hydraulic Fracture Geometry on Well Productivity in Shale Oil Plays with High Pore Pressure
title_full_unstemmed	The Effect of Hydraulic Fracture Geometry on Well Productivity in Shale Oil Plays with High Pore Pressure
title_sort	effect of hydraulic fracture geometry on well productivity in shale oil plays with high pore pressure
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/605997a7ffea4b31a3bb8df0f2c1d188
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The Effect of Hydraulic Fracture Geometry on Well Productivity in Shale Oil Plays with High Pore Pressure

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