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Keywords: fraction
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Proceedings Papers

Paper presented at the SPE EuropEC - Europe Energy Conference featured at the 83rd EAGE Annual Conference & Exhibition, June 6–9, 2022
Paper Number: SPE-209668-MS
... changes at late time. The former lasts longer than T n,cr in practice and is instead characterized by a transition time T n,tr . The parameters T ch , T n,tr are well correlated with the CDNC shape, as quantified by one or two fractions z α,β denoting the fraction of the NCDC between...
Proceedings Papers

Paper presented at the SPE Europec, December 1–3, 2020
Paper Number: SPE-200538-MS
... fracture geometry particle fracturing materials Upstream Oil & Gas PSD representation injection proppant Simulation base case 2 fraction fracturing fluid different size mean diameter particle conductivity cross-linked gel particle size distribution Introduction Modern hydraulic...
Proceedings Papers

Paper presented at the SPE Europec, December 1–3, 2020
Paper Number: SPE-200596-MS
... is performed on matrix block size and injection gas composition (pure C 1 , a mixture of C 1 and CO 2 , and a mixture of C 1 , C 2 and C 3 ), and the role of diffusion is evaluated for each scenario. As gas is injected, the composition of heavier hydrocarbon fractions in the gas phase significantly...
Proceedings Papers

Paper presented at the SPE Europec featured at 81st EAGE Conference and Exhibition, June 3–6, 2019
Paper Number: SPE-195476-MS
..., the cumulative produced gas, the cumulative produced oil, the volume fraction of liquid condensate, at each pressure depletion stage of the CVD experiment and the initial gas compressibility factor (Zi). The algorithm requires the initial gas compressibility factor (Zi) to calculate the initial moles...
Proceedings Papers

Paper presented at the SPE Europec featured at 81st EAGE Conference and Exhibition, June 3–6, 2019
Paper Number: SPE-195520-MS
... into the cement matrix. At deeper depths within the cement matrix, the mole fraction of carbonate anion (CO 3 2− ) is higher than CO 2 and bicarbonate (HCO 3 − ). The calcium cation freed from portlandite starts to diffuse out of the cement matrix, but within intermediate areas in the presence of a higher...
Proceedings Papers

Paper presented at the SPE Europec featured at 81st EAGE Conference and Exhibition, June 3–6, 2019
Paper Number: SPE-195565-MS
... grain resistivity-based wettability index wettability assessment contact angle fraction imbibition resistivity measurement interpretation Introduction where X HC is the volume fraction of hydrocarbon-wet (oil-wet) grains, and S wc,HC is the minimum water saturation needed...
Proceedings Papers

Paper presented at the SPE Europec featured at 81st EAGE Conference and Exhibition, June 3–6, 2019
Paper Number: SPE-195449-MS
... (1) β = v s g v s g + v s l Experimental set up For increasing gas fractions and qualities (mass fractions), a slip condition may exist, leading to a significant difference between the actual velocity of the rising gas and liquid. Zubar and Findlay, (1965...
Proceedings Papers

Paper presented at the SPE Europec featured at 80th EAGE Conference and Exhibition, June 11–14, 2018
Paper Number: SPE-190797-MS
... with the observation that in most equilibrium systems of petroleum mixtures, the molar distribution shape of heavier fractions such as C 7+ are very similar. This observation is verified for a wide range of equilibrium pressure-temperature conditions for a wide range of petroleum reservoir mixtures. The states...
Proceedings Papers

Paper presented at the SPE Europec featured at 80th EAGE Conference and Exhibition, June 11–14, 2018
Paper Number: SPE-190843-MS
... fracturing residence time recovery fraction fracture isotherm adsorbed gas matrix free gas fracture property dimensionless number diffusion perforation permeability fracture shape shale gas production time scale porous media Introduction Shale gas is the most rapidly growing energy...
Proceedings Papers

Paper presented at the SPE Europec featured at 79th EAGE Conference and Exhibition, June 12–15, 2017
Paper Number: SPE-185772-MS
... in each case. In one grouping the sulphate is barely retarded at all, and breaks through at seawater fractions lower than 10%. In the other grouping, however, sulphate does not break through until the seawater fraction in the produced brine exceeds 75%. This retardation of sulphate occurs most strongly...
Proceedings Papers

Paper presented at the SPE Europec featured at 79th EAGE Conference and Exhibition, June 12–15, 2017
Paper Number: SPE-185845-MS
... fractions and different injection rates in fractured rocks composed of multiple minerals. The preliminary results demonstrated that the mineral volume fractions have significant impact on the porosity alteration and fracture propagation. The calcite dissolution is preferred in acidic fluids over less...
Proceedings Papers

Paper presented at the SPE Europec featured at 79th EAGE Conference and Exhibition, June 12–15, 2017
Paper Number: SPE-185820-MS
... process and considerably reduce the amount of required core floods. Hence, microfluidic surfactant screening be considered an integral part of the surfactant solution selection process in the future. Upstream Oil & Gas Wettability Control fraction Injection Rate breakthrough experiment...
Proceedings Papers

Paper presented at the SPE Europec featured at 78th EAGE Conference and Exhibition, May 30–June 2, 2016
Paper Number: SPE-180082-MS
..., the challenges with PNA based characterization methods are discussed. fluid modeling pr pc-saft sbwr srk pr calculation Characterization Method PVT database PVT measurement Pedersen correlation oil 329 reservoir fluid fraction equation of state scn component deviation model parameter YAn pc...
Proceedings Papers

Paper presented at the EUROPEC 2015, June 1–4, 2015
Paper Number: SPE-174335-MS
... was formed between the oil phase and the water phase. These emulsions were not observed in case of pure alkanes, probably due to the unavailability of a polar component. Thereafter to study the property of these oil emulsions, samples of oil was extracted from the floating fraction. This floating oil (final...
Proceedings Papers

Paper presented at the EUROPEC 2015, June 1–4, 2015
Paper Number: SPE-174298-MS
... %, and they were reduced within 8.4 % once using temperature-dependent viscosity binary interaction coefficients. enhanced recovery Upstream Oil & Gas oil sand complex reservoir bitumen Svrcek fluid modeling equation of state correlation Characterization Method fraction AARD co 2 pc-saft...
Proceedings Papers

Paper presented at the EAGE Annual Conference & Exhibition incorporating SPE Europec, June 10–13, 2013
Paper Number: SPE-164830-MS
... at the reservoir scale was evaluated. Results, Observations and Conclusions The developed approach proved very efficient to estimate the lithological fraction of the hydrocarbon bearing rocks (i.e. sands in a shaley/clayey environment). The lithological fraction is of crucial importance during the appraisal...
Proceedings Papers

Paper presented at the SPE Europec/EAGE Annual Conference, June 4–7, 2012
Paper Number: SPE-154534-MS
... the location of greatest scale risk is moved much further upstream in the flow process. enhanced recovery brine seawater fraction waterflooding concentration composition precipitation scale inhibitor injection well tendency production well fraction seawater injection injection system...
Proceedings Papers

Paper presented at the SPE EUROPEC/EAGE Annual Conference and Exhibition, May 23–26, 2011
Paper Number: SPE-142979-MS
... θ = f 1 cos θ 1 + f 2 cos θ 2 + … + f i cos θ i where f 1 and f 2 are the fractions of the surface occupied by surface types having contact angles θ 1 and θ 2 . Fig. 3 , 4 and 5 show relations between the mass/area fraction of mineral...
Proceedings Papers

Paper presented at the SPE EUROPEC/EAGE Annual Conference and Exhibition, May 23–26, 2011
Paper Number: SPE-143041-MS
... Abstract The Brazilian pre-salt oil reservoirs contain a considerable amount of methane, CO 2 and volatile fractions under high pressure. Several authors suggest that the compositional reservoir simulation is fundamental for the description of their properties and prediction of oil production...
Proceedings Papers

Paper presented at the SPE EUROPEC/EAGE Annual Conference and Exhibition, May 23–26, 2011
Paper Number: SPE-143379-MS
..., such as grid size dependence, a weak pressure dependence and a strong dependence on the injected gas composition. enhanced recovery simulation alpha-factor table application upstream oil & gas endpoint immiscible gas flood gas injection method immobile oil composition mole fraction compute...

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