... 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...

... 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...

... & gas aguilera porosity pore throat size apparent permeability diffusion coefficient diffusion contribution pore throat radius pore throat diffusion equation permeability Introduction Due to the advancements of hydraulic fracturing and horizontal well drilling technology...

... 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...

... of the proposed MBE is the inclusion of hydraulic 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...

... was measured with x-ray diffraction (XRD), and total organic carbon (TOC) 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...

... observable on log-log crossplots of porosity vs. true resistivity. The analysis has been used in the past primarily for determination of water saturation. However, the plot has been extended throughout the years for evaluation of other parameters of practical importance including, for example, permeability...

... Abstract Hydrocarbon storage capacity of organic-rich shales depends upon porosity and surface area, whereas pore (throat) size distribution and pore (throat) network connectivity control permeability. The pores within organic matter (OM) of organic-rich shales develop during thermal maturation...

..., Lathom, York River, Wapiti, Teslimkoy, Kesan, and Ordivician Quartz formations. NMR measurements were obtained initially on the dry cores to establish the presence of any liquids that were not cleaned or any isolated porosity. The air permeability was measured using an in-house permeameter. The cores...

... Modeling & Simulation mechanism diffusion rate porosity Response Surface Methodology Upstream Oil & Gas co 2 shale formation reservoir Oil Recovery huff-n-puff process molecular weight permeability natural gas oil recovery factor production rate conductivity unconventional...

...) of transient linear flow, something that compares well with the Eagle Ford in Texas. Specialized material balance calculations, which consider multiple porosities, have been used in the Eagle Ford shale in Texas and are shown to have similar application in the Burgos Eagle Ford and Pimienta shales. Based...

... pressure, changes in the C1/C2 ratio occur along with liquid yields changes appearing to indicate that the liberation of adsorbed gas in effect. complex reservoir mechanism porosity adsorbed gas composition shale gas Upstream Oil & Gas saturation pressure sepehrnoori correction enhanced...

... 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...

... 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...

... 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...

... 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...

... 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...

... engineers 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 in evaluating...

... recovery. shale gas machine learning complex reservoir Artificial Intelligence resolution sem mosaic Reservoir Characterization Upstream Oil & Gas adsorption registration accessibility organic matter porosity matrix gas storage CT image co 2 gas storage capacity alignment...

... 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...