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Keywords: reactivation
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Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5450-MS
... and hydraulic fractures that have been analyzed. Previous works have detailed the nature of the fractures recovered in the core, identifying 375 hydraulic fractures, 309 calcite-sealed natural fractures, and 8 faults (Gale et al., 2018). We studied the likelihood for fractures to be initiated or reactivated...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-326-MS
... to the horizontal wellbore may contribute to well productivity. The microseismic event patterns during stimulation also confirm the (a) stimulation of natural fractures near the wellbore, and (b) shear reactivation of pre-existing faults and fractures parallel to the maximum stress direction. The model built...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-435-MS
... of carbonate-rich Marcellus Shale. The strength required to form and reactivate fractures was measured over a range of effective confining stresses from 2 to 30 MPa. Initially intact, specimens of 25 mm diameter and 25 mm length were stressed to reservoir conditions, fractured by direct-shear...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-997-MS
... Abstract There has been lots of discussion on associating microseismic activity with the reactivation of bedding planes near the hydraulic fracture tip. Yet evidence for bedding-plane slip has not been observed in cores of stimulated rock volumes, and a consensus on how to integrate bedding...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 23–25, 2018
Paper Number: URTEC-2902950-MS
... and the potential to use the 3D seismic to predict the risk of casing failure pre-drill. The cause of the casing failure was postulated to be reactivation of pre-existing faults and fractures during fracture stimulation. Fault reactivation has been inferred to occur in the region based on the induced seismicity...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 23–25, 2018
Paper Number: URTEC-2878217-MS
... of fracture intensity to faults is observed in each. This suggests that the fractures are tectonic in origin and are coeval with faults or are the result of later fault reactivation. To predict fractures in under sampled areas and intervals of the basin, likely fracture formation mechanisms were evaluated...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 24–26, 2017
Paper Number: URTEC-2671301-MS
... pressure) in order to identify fracture populations likely to control fluid flow, those that required different stimulation pressures in order to contribute to flow, and the mechanical conditions that favored out-of-zone growth and reactivation of geohazards. Additional observations, such as net wellbore...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 25–27, 2014
Paper Number: URTEC-1922708-MS
... shale gas Upstream Oil & Gas Eagle Ford shale hydraulic fracturing Simulation urtec 1922708 shale oil complex reservoir Imaging reactivation lattice boltzmann simulation interface oil shale natural fracture calcite fracture cement permeability fracture cement permeability...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 25–27, 2014
Paper Number: URTEC-1921503-MS
... Natural fractures can reactivate during hydraulic stimulation and interact with hydraulic fractures producing a complex and highly productive natural-hydraulic fracture network. This phenomenon and the quality of the resulting productive stimulated rock volume (P-SRV) is primarily a function...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 25–27, 2014
Paper Number: URTEC-1922814-MS
... Upstream Oil & Gas Eagle Ford shale reactivation Reservoir Characterization orientation fracture network geometry hydraulic fracturing fracture trend microseismicity trend amplitude fracture treatment dataset fracture heat map source mechanism wellbore fracture...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 25–27, 2014
Paper Number: URTEC-1932416-MS
... «fracability» qualifies the shale gas in terms of propensity to develop a stimulated reservoir volume (SRV) in combination with hydraulic fractures that have the desired geometry and sustainable conductivity. The geomechanical indicators characterizing the fracability include: the likelihood of reactivation...

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