fabian rosales - Academia.edu (original) (raw)
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Papers by fabian rosales
All Days, 2012
Characterization of shale gas stimulation and production mechanisms is of paramount importance to... more Characterization of shale gas stimulation and production mechanisms is of paramount importance to continued horizontal well hydraulic fracture stimulation design and execution. This study integrates analyses of fracture calibration tests, hydraulic fracture treatments, production logs, pressure buildup and well interference transients, and long term production data to quantify hydraulic fracture extent, shale permeability, and the expected ultimate recovery. The study includes integrated analysis of 16 horizontal wells drilled from a pad in two opposing directions with mostly uniform length and spacing. Uncertainties in the hydraulic fracture and formation properties are reduced through rigorous modeling with analytical and numerical models. Results enable critical analysis of the shale development plan. Recommendations from this study offer insight on stimulation design modifications to yield improved well performance and increased recovery efficiency within the pad stimulated volu...
The current state of shale gas reservoir dynamics demands understanding longterm production, and ... more The current state of shale gas reservoir dynamics demands understanding longterm production, and existing models that address important parameters like fracture half-length, permeability, and stimulated shale volume assume constant permeability. Petroleum geologists suggest that observed steep declining rates may involve pressuredependent permeability (PDP). This study accounts for PDP in three potential shale media: the shale matrix, the existing natural fractures, and the created hydraulic fractures. Sensitivity studies comparing expected long-term rate and pressure production behavior with and without PDP show that these two are distinct when presented as a sequence of coupled build-up rate-normalized pressure (BU-RNP) and its logarithmic derivative, making PDP a recognizable trend. vii
All Days, 2012
Characterization of shale gas stimulation and production mechanisms is of paramount importance to... more Characterization of shale gas stimulation and production mechanisms is of paramount importance to continued horizontal well hydraulic fracture stimulation design and execution. This study integrates analyses of fracture calibration tests, hydraulic fracture treatments, production logs, pressure buildup and well interference transients, and long term production data to quantify hydraulic fracture extent, shale permeability, and the expected ultimate recovery. The study includes integrated analysis of 16 horizontal wells drilled from a pad in two opposing directions with mostly uniform length and spacing. Uncertainties in the hydraulic fracture and formation properties are reduced through rigorous modeling with analytical and numerical models. Results enable critical analysis of the shale development plan. Recommendations from this study offer insight on stimulation design modifications to yield improved well performance and increased recovery efficiency within the pad stimulated volu...
The current state of shale gas reservoir dynamics demands understanding longterm production, and ... more The current state of shale gas reservoir dynamics demands understanding longterm production, and existing models that address important parameters like fracture half-length, permeability, and stimulated shale volume assume constant permeability. Petroleum geologists suggest that observed steep declining rates may involve pressuredependent permeability (PDP). This study accounts for PDP in three potential shale media: the shale matrix, the existing natural fractures, and the created hydraulic fractures. Sensitivity studies comparing expected long-term rate and pressure production behavior with and without PDP show that these two are distinct when presented as a sequence of coupled build-up rate-normalized pressure (BU-RNP) and its logarithmic derivative, making PDP a recognizable trend. vii