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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-200010-MS
... ( Carman 1937 ) relating kerogen permeability to porosity and tortuosity. The literature review presented above is limited, yet highlights a segment of many studies performed to investigate the effects of diffusion on gas transport in micro and nanopores in low and ultra-low permeability reservoirs...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, September 28–October 2, 2020
Paper Number: SPE-199968-MS
... A + k f A f A ≈ k m + k f A f A = k m + k f ϕ f k f is unpropped fracture permeability, and ϕ f is unpropped fracture porosity, which, with reference to Fig. 5 a, can be estimated as follows for the case of parallel plates ( Cho et al...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, September 28–October 2, 2020
Paper Number: SPE-199971-MS
...). Surprisingly, the results of wettability tests show higher normalized imbibed volume of brine compared with that of oil, suggesting that the EOW plugs are preferentially water-wet. This trend is opposite to what we previously observed for the oil-wet OGW plugs with significantly high organic porosity...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189800-MS
... 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 to helium was tested under a full cycle...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189787-MS
... 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...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189825-MS
.... Porosity is an important property to determine when characterizing a reservoir. A number of methods exist for determining porosity, each with their own challenges and advantages. Common methods such as helium pycnometry (combined with bulk density values obtained from caliper, Archimedes or 3D laser...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189803-MS
... any liquids that were 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...
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 and...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189791-MS
... 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...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189797-MS
... 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 on...
Proceedings Papers

Paper presented at the SPE Canada Unconventional Resources Conference, March 13–14, 2018
Paper Number: SPE-189785-MS
... Total compressibility 1×10 −6 psi −1 Matrix permeability 0.005 mD Matrix porosity 0.085 value Horizontal well length 1000 ft Total number of fractures 5 value Fracture conductivity 15 mD-ft Fracture half-length 250 ft Fracture Height 42 ft Table 3...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185045-MS
... everything, contains 60 variables: Fracture geometry: variable fracture spacing and length, and distance to a no-flow boundary to adjacent wells. Rock quality: porosity and permeability by fracture, halo, and matrix Free fluid composition: set through initial pressure and liquid yield, with a 12...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185034-MS
... GEM™, a compositional simulator from CMG™, is chosen to simulate the dual-porosity structured grid model in this work. There are two main reasons to use a compositional simulator instead of black oil simulator in this work. First, the fluid in this region falls into volatile oil window. The...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185032-MS
... based on the experimental data of Seilsepour and Rashidi (2008) , as shown in Equation (2) . In this study, we utilized Equation (2) to calculate the CEC value. Clay fraction is assumed to be a function of the maximum porosity and the porosity of each grid block ( GEM, 2015 ) as shown in the...
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 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 these...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185049-MS
... that comprise a log suite 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...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185054-MS
...), and capillary condensation (pore filling). The sorbed natural gas allows the shale to retain a much greater storage capacity compared to the normal free gas porosity of conventional rocks ( Agrawal et al., 2010 ). The amount of adsorbed gas can be as high as 50% of the gas-in-place as observed on...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185058-MS
... ; Ghanbari and Dehghanpour, 2015 ; Yang et al., 2015 ). Ghanbari and Dehghanpour (2015) reported that microfractures can be induced even when water imbibes even into confined shale samples. Expansion of the rock pore space, coupled with induced microfractures, can enhance the porosity and permeability of...
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...
Proceedings Papers

Paper presented at the SPE Unconventional Resources Conference, February 15–16, 2017
Paper Number: SPE-185059-MS
... performance 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...

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