... on accurate estimates of water saturation. It has been shown that integrating resistivity measurements and NMR T 2 distributions enables simultaneous assessment of wettability and water saturation. Nevertheless, there still exist significant uncertainties in this approach in the presence of multiple types...

... of wettability, water saturation, and porosity obtained by applying the new interpretation workflow were in agreement with experimental measurements. Assessment of hydrocarbon reserves, porosity, and dominant wettability solely from the interpretation of multifrequency complex-valued electrical measurements...

...A. Larsen; F. Ahmadhadi; E. Øian Summary The initial water saturation in a reservoir is important for both hydrocarbon volume estimation and distribution of multiphase flow properties such as relative permeability. Often, a practical reservoir engineering approach is to relate relative permeability...

... database of K r and P c curves was generated based on existing mathematical models. This database was used to perform thousands of coreflood simulation runs representing oil-water drainage steady-state experiments. The results obtained from the corefloods including pressure drop and water saturation...

.... 1 shows the frequency ranges at which different polarization mechanisms typically occur ( Revil 2012 , 2013b ). reservoir characterization upstream oil & gas grain size permittivity enhancement well logging water saturation permittivity polarization fraction structural geology...

..., and potentially belong to the same compartment. The original Timur (1969) equation for permeability, k Timur , is (2) k Timur = C × Φ 4.4 S w irr 2 , with the coefficient C , porosity Φ, and irreducible water saturation S w irr . 2 9 2020 5 1 2021 4 1 2021...

... and reservoirs. ML techniques can offer an alternative for estimating future reservoir and well‐flow rates by providing a way to incorporate all of the variables that impact them. machine learning Reservoir Depth water saturation Reservoir Characterization depositional environment depletion rate...

... water saturation pressure drop residual oil saturation bitumen upstream oil & gas sandpack saturation permeability relative-permeability curve different temperature capillary pressure bitumen water system water relative permeability injection The two‐phase oil/water relative...

... and verify its reliability in pore‐scale and core‐scale domains using numerical simulations and experimental measurements, respectively. This new index requires calibration at fully water‐saturated water‐wet and fully hydrocarbon‐saturated hydrocarbon‐wet states and can be applied to mixed‐wet rocks at any...

.... The objectives of this paper are to introduce a new workflow for joint interpretation of resistivity and NMR measurements to simultaneously estimate wettability and water saturation, and to verify the reliability of wettability and water-saturation estimates by comparison with experimentally measured contact...

... Dynamics water saturation flow in porous media Simulation Artificial Intelligence steady state pressure drop Upstream Oil & Gas correlation experiment Andersen SPE Reservoir Evaluation average saturation enhanced recovery Fluid Dynamics pressure drop relative permeability analytical...

... hydraulic fracturing initial oil-production rate complex reservoir water saturation NPV water blockage matrix recovery immediate flowback fracture capillary pressure water blockage permeability recovery relative permeability flowback sdp input shut-in benefit water saturation oil...

..., as received. shale gas machine learning Aguilera complex reservoir Pimienta shale water saturation SPE Reservoir Evaluation Mexico porosity well anhélido-1 permeability Reservoir Characterization Upstream Oil & Gas reservoir pressure cumulative gas production mexican shale energy...

... to the matrix coupled with a water–block effect. The water–block effect is more significant at low water saturations than at higher water saturations, leading to a rapid–to–gradual drop of gas relative permeability with increasing water saturation. A conceptual model on water redistribution in a fracture/matrix...

..., using the regional variation in depth, thickness, porosity, and water saturation to capture the regional heterogeneity in the Bakken Shale petroleum system. We selected approximately 2,000 horizontal wells, targeting the Middle Bakken Formation with detailed completion records and initial production...

... ), which is dependent on water saturation. The Koval model was originally developed for viscous-fingering description in miscible displacement, which is defined as (1) f S ( S ) = K S 1 + S ( K − 1 ) , where f is fractional flow, S is the solvent saturation...

... with an approximation. Both are equally valuable to meet different types of goals. chemical flooding methods gas injection method water saturation fractional-flow curve pressure gradient experimental data flow in porous media regime relative permeability model fit foam enhanced recovery Upstream Oil...

...), and formation if a  = 10 m (Scenarios 5 and 6). Table 1 Global properties of the layered model. Property Sand A Sand B Permeability (md) 500 50 Entry pressure (Pa) 1000 5000 Porosity 0.2 Irreducible water saturation 0.05 Residual oil saturation 0.05 Initial oil...

... to directional connectivity of all the conductive components; and (c) improve the estimates of water saturation in organic-rich mudrocks. The new resistivity method incorporates directional connectivity of each conductive component of the rock. This parameter is a function of rock-fabric features...

.... Irreducible-water-saturation and residual-hydrocarbon-saturation estimates increased from 30 to 60% and 20 to 40%, respectively, with an increase in maturity from oil window to late-condensate window. Estimates of relative permeability of hydrocarbon and aqueous phases at 80% saturation of the corresponding...