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Keywords: porosity
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Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, September 28–October 2, 2020
Paper Number: SPE-199968-MS
... model selection, straight-line analysis (SLA) to provide initial estimates of hydraulic fracture properties, and model history matching of flowback data to refine hydraulic fracture property estimates. The model history matching is performed using a recently-introduced semi-analytical, dual-porosity...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, September 28–October 2, 2020
Paper Number: SPE-200010-MS
... for the proper use of the proposed methodology. reservoir characterization complex reservoir shale gas structural geology fluid dynamics tight gas upstream oil & gas correlation helium permeability tortuosity value diffusion coefficient pore throat radius diffusion aguilera porosity pore...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, September 28–October 2, 2020
Paper Number: SPE-199971-MS
... previously observed for the oil-wet OGW plugs with significantly high organic porosity, positively correlated to TOC content. We did not observe well-developed organic pores within organic matter of less-mature EOW plugs. We also observed that the normalized imbibed volume of oil is much higher in the HF...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189785-MS
... conventional formations. Also, general guidelines have been provided in this study to enhance success of CO 2 -EOR in unconventional reservoirs. shale reservoir enhanced recovery oil reservoir porosity Upstream Oil & Gas co 2 Modeling & Simulation mechanism Response Surface Methodology...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189783-MS
... fractures, as well as inorganic, organic and natural fracture porosities. These porosities are included in a history-matching presented in detail for a well undergoing huff-and-puff gas injection. The novelty of this work resides on the introduction of a new MBE that considers multiple porosities...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189791-MS
.... Pickett plots have been used historically as a powerful tool for petrophysical analysis of well logs. The plots represent a snapshot on time that corresponds to the time when the well logs are run. Pickett plots rely on pattern recognition observable on log-log crossplots of porosity vs. true resistivity...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189800-MS
...) and thermal maturity were determined with a SRA (Source Rock Analyzer). Porosity was also measured under as-received conditions and cleaned and dried conditions with a helium pycnometer. For each sample, its initial baseline permeability to helium was tested under a full cycle of net confining pressures...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189803-MS
... not cleaned or any isolated porosity. The air permeability was measured using an in-house permeameter. The cores were then brine saturated in two steps of spontaneous imbibition followed by forced imbibition under vacuum. The Archimedes principle was used to measure the sample pore volumes. Porosity...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189825-MS
... Abstract Standard laboratory techniques for determining petrophysical and geomechanical properties (e.g. porosity/permeability, Young's modulus, unconfined compressive strength) of tight rocks routinely require perfectly-cylindrical core plugs and/or large amounts (30+ g) of crushed-rock...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189797-MS
... with an azimuth mostly parallel to the expected minimum horizontal stress direction and measured a pressure of 2800 psi, temperature of 169 °F, permeability of 200 nD, effective porosity of 1 to 8% and an average TOC of 1. 95%, which increased from 2.71% to 6% the lower Eagle Ford. The well was hydraulically...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185024-MS
... shale gas unconventional upper jurassic oil play stimulation porosity Mexico Introduction The state-owned Mexican Petroleum Company (PEMEX) started the evaluation of the Upper Cretaceous Eagle Ford and the Upper Jurassic Pimienta shale plays since 2011. Details of PEMEX´s activity...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185045-MS
... & Gas saturation pressure porosity adsorbed gas storage capacity adsorbed gas composition Langmuir pressure Duvernay recovery sepehrnoori correction free gas dewpoint fracture society of petroleum engineers Introduction In recent years, industry activity within North America has...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185058-MS
... Abstract Imbibition of water into the shale matrix is known as the primary reason for inefficient water recovery after hydraulic fracturing treatments. The hydration of clay minerals may induce microfractures in clay-rich shale samples. The increased porosity and permeability due to induced...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185032-MS
... water may additionally retard water production by reducing water relative permeability. Furthermore, it enhances effective porosity/permeability through mineral dissolution. However, in tight oil reservoirs, pressure maintenance efficacy could be an issue. Simulation results display a significant...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185076-MS
... of brine imbibition curve, and the final oil recovery is always less than the equilibrated water uptake of dry samples. This observation indicates that water can only access the hydrophilic part of the pore network initially saturated with oil. Finally, we introduce a porosity-based model to analyze oil...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185059-MS
... for several major North American shale plays. We divide porosity of the system into accessible and inaccessible pores, and incorporate inaccessible pores with grains into the part of the rock that is not accessible. Generally speaking, accessible pores contribute to flow directly while inaccessible pores do...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185034-MS
... in the unconventional liquid reservoirs were not done in full field-scale and were not history matched before applying CO 2 EOR to the model. Without history matching step, the simulation might generate misleading results in CO 2 EOR studies. The dual-porosity, structured grid model in this paper will be history...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185049-MS
... over an interval of interest to obtain log response groups based on log curve variation. These response groups can be used to propagate critical porosity and permeability data into the model. The workflow described in this paper was successfully applied in several mature areas that include...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185073-MS
... to calculate bin porosities. A sensitivity analysis for T2 cut-offs was run in order to establish a good match between the bin porosity and OSI values that indicate producible hydrocarbons. A good agreement was reached among OSI greater than 100 mg HC/gTOC and the bin porosities estimated between T2 = 33ms...

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