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Keywords: water saturation
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Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205950-MS
... properties in the form of prediction intervals using the concept of quantile regression forests (QRF). We test our workflow on two use cases. First, we consider a petrophysics use case on an unconventional land dataset to predict the petrophysical properties such as water saturation, total porosity, volume...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205883-MS
... in the context of gravity-based oil recovery methods. artificial intelligence relation relative permeability phase fraction equation 76 upstream oil & gas water saturation core fluid bundled-tube model fluid dynamics phase saturation pore-size distribution novel robust fundamentals-based...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205928-MS
... NMR logging can reflect the pore structure of reservoir. For sandstone reservoir, clay bound water (< 3 ms), capillary bound water (3 ~ 33ms) and free fluid (> 33ms) can be distinguished by a proper T2 cutoff time ( Figure. 2 ), and then the total water saturation ( formula 1...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205987-MS
... for water saturation assessment from relative dielectric permittivity measurements. CRIM equation ( Birchak et al. 1974 ) is given by Abstract Broadband dielectric dispersion measurements are attractive options for assessment of water-filled pore volume, especially when quantifying salt concentration...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206361-MS
... and water saturation were considered. (1) k r g f o a m = k r g n o − f o a m ( S w ) × F M , F M = [ 1 1 + F M M O B × F c s × F s w ] where k r g f o a m is the gas relative...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201618-MS
... argonne national laboratory pore surface upstream oil & gas water saturation rock sample carbonate reservoir reservoir characterization high salinity water oil displacement wettability oil recovery society of petroleum engineers Introduction Carbonate oil reservoirs contribute...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201608-MS
... a model that fits historical data can be easy but honoring the true petrophysics and fluid dynamics of the reservoir is often challenging. Some of the major challenges during reservoir simulation are uncertainties in water saturation, permeability, phase behavior, and effective fracture surface area...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201651-MS
... To summarize, in this study the shale gas production period is divided into two stages based on the critical water saturation. At both two stages, the Langmuir-type gas adsorption isotherm is modified by incorporating water content. The BET model is adopted to describe the water adsorption...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201417-MS
... and integration of the seismic volume and the available well logs. The well log data show that the net hydrocarbon bearing zone thickness is about 270 feet, the average porosity ranges from 4% in the Bahi/Gargaf sandstone to 13% in the Waha limestone. The average water saturation ranges from 15% to 32...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201429-MS
.... waterflooding gridblock water saturation reservoir simulation mohanty correlation experiment model parameter flow in porous media fluid dynamics heterogeneity relative permeability viscous fingering viscosity ratio saturation enhanced recovery upstream oil & gas displacement history oil...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201464-MS
... in porous media reservoir surveillance hydraulic fracturing production control production logging reservoir simulation drillstem/well testing water saturation production data fracture closure jet-pump installation drilling operation fluid dynamics oil production drive mechanism load recovery...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201479-MS
... shut-in time. Again, higher number of cracks per fracture increases the optimum shut-in time. The effect of different initial water saturations on optimum shut-in time was insignificant If real-time shut-in pressure data are used, the model can translate the pressure data to dynamic crack...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201548-MS
... case, it has been demonstrated that in carbonates, the Schlumberger-Doll Research formula (also known as SDR formula) is more appropriate than others to estimate permeability of rock at fully water saturated conditions (see Logan et al. 1998 , Allen et al. 2001 , and Hassall et al. 2004...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201519-MS
... Abstract Nuclear Magnetic Resonance (NMR) transverse relaxation ( T 2 ) measurements are sensitive to fluid saturations and wettability of the rocks. However, quantifying wettability index solely from NMR T 2 models relies on accurate estimates of water saturation. It has been shown...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196164-MS
..., the derivative operators <*>, <'> and <·> represent the partial derivatives with respect to gas saturation ( S g ), pressure ( p ) and water saturation ( S w ). The phase mobilities ( a, α, γ ) and accumulation terms ( b, β, ξ ) are defined as follows: (3) a = 1 μ g B g...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196156-MS
... injectors and producers. Reservoir Characterization enhanced recovery oil production Modeling & Simulation bigoray reef EOR process water saturation fracture network porosity Upstream Oil & Gas Alberta configuration reef permeability cross section oil saturation matrix...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195859-MS
..., the water/oil relative permeability increased at low water saturations and declined at high water saturations, which was attributed to the impact of IFT and viscosity ratio changes on the relative permeability [ 4 ]. A refined oil was used by Davidson [ 5 ] in 1969, in a clean sand-pack in the temperature...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195882-MS
... type, porosity, permeability and water saturation were interpolated within the reservoir. Because natural fractures in these carbonate reservoirs are known to be an important part of fluid movement, it was important to characterize the discrete fracture network. In one well, a borehole image...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195804-MS
... are given in Fig. 1 Data Analytics In this study, core and petrophysical well logs dataset was used for the prediction of water saturatiom. METHODOLOGY This study explores the comparative performance of state-of-the-art and conventional AI techniques in the prediction of water saturation...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195853-MS
... = A * PcB + C) is used to fit each capillary pressure curve. Then, a robust relationship between the fitting coefficients (A, B, C) and rock properties (i.e. porosity and permeability) is expressed as a nonlinear function for each DRT. Combined with the height above free water level, a water saturation (Sw...

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