... reservoir quality variations. successfully applied in this case history to resolve these uncertainties. The study well was drilled with a mud salinity much lower than formation salinity. In zones with shallow mud filtrate invasion, dielectric measurements extend over an area of fluid heterogeneity, from...

... facies schlumberger pca accuracy spwla 63 limestone final classification tsne matrixe interpretation rd annual logging symposium artificial intelligence classification variation workflow original classification spwla-2022-0129 SPWLA 63rd Annual Logging Symposium, June 10-15, 2022 DOI...

... reservoir simulation drilling operation upstream oil & gas remediation of hydrates asphaltene inhibition information variation pilot well gor spwla 63 asphaltene content annual logging symposium rd annual logging symposium spwla-2022-0006 compartmentalization mobility composition...

... arrivals, reflections, converted modes, multiples, and amplitude and phase variations. These seismic data can be used to obtain elastic properties of the formation and characterize the reservoir. Full-waveform inversion (FWI) extracts the elastic properties of the formation from the seismic wavefield...

... is applicable only for the ideal can model various wave phenomena for bond quality situations such as well-bonded casing and formation, variation between the free-pipe and well bonded free pipe, and bond to casing only (i.e., cement conditions. The modeling shows that wave amplitude debonded from formation...

... reservoir characterization well logging core analysis enhanced recovery structural geology spwla 62 flow in porous media upstream oil & gas clay content log analysis waterflooding spwla-2021-0097 facies variation residual oil saturation nd annual logging symposium saturation...

... the workflow, this paper specifies standard multi-mineral petrophysical solver void of the mathematical formulations with example sonic inputs. This allows one to independently observe calculations. This coupled workflow is novel because it and quantify variations in both compressional and shear highlights...

... analysis reservoir characterization structural geology variation evaluation upstream oil & gas july 29 mullin formation testing asphaltene gradient asphaltene content artificial intelligence symposium downhole fluid analysis connectivity june 24 engineering zone ms300 spwla 61...

... log analysis drilling operation pixel detection spwla 61 reservoir characterization artificial intelligence upstream oil & gas variation formation evaluation machine learning well logging structural geology whole-core photo image data depth interval core analysis flow...

... of the reservoir has equilibrated asphaltenes with a lateral variation of 20%. This indicates connectivity in the large portion of the reservoir, which is confirmed by three years of production data from the field. There are two outliers off the asphaltene equilibrium curve implying isolated sections: one...

... the nearwellbore region where tectonic stress redistribution causes pronounced azimuthal slowness variation. This stress-induced slowness variation is important because it is also a key driver of wellbore geomechanics. Moreover, in the presence of highly laminated formations there can be a significant azimuthal...

... electrofacies analysis june 24 correlation sandstone spwla 61 rock data image log upstream oil & gas variation july 29 acoustic image log electrofacies model facies depth calibration symposium electrofacies university SPWLA 61st Annual Logging Symposium, June 24 to July 29, 2020 1 HIGH...

... in carbonates of the Tal block has investigated how heterogeneity can be defined and how we can quantify this term by describing a range of statistical heterogeneity measures (e.g., Lorenz and Dykstra-Parsons coefficients). These measures can be used to interpret variation in wireline log data, allowing...

... to focus on its variation with characteristics such as amount and type of kerogen, maturation, clay type, pore dimensions and aromaticity (Chalmers and Bustin, 2007 and 2008; Ross and Bustin, 2008 and 2009; Lu et al., 1995; Weniger et al., 2010; Zhang et al., 2012; Gasparik et al., 2012; Ji et al., 2012...

..., deep resistivity, and compressional slowness, were used to discern different facies within the Eagle Ford shale. These log facies demonstrated an excellent match with whole core-derived facies, which took into account mineral volumetric compositional variation, carbonate grain-size variation...

... variation of viscosity in reservoirs that is caused by biodegradation. Biodegradation-induced gradients are expected because the microbes live in water and consume oil at the oil-water contact (OWC), thus biodegradation is far from uniform in the oil column. Case studies reviewed here show that reservoirs...

... can discern bound fluids and free fluids, reveal otherwise hidden pore size variations and determine hydrocarbon composition and viscosity with unique sensitivity. The real-time availability of this valuable information from logging while drilling (LWD) measurements significantly improves drilling...

... logging Upstream Oil & Gas variation porosity slowness equation SPWLA 59th Annual Logging Symposium, June 2-6, 2018 1 ASSUMPTIONS AND UNCERTAINTIES IN PETROPHYSICAL MODELS FOR SHALE GAS FORMATIONS AND THEIR EFFECT ON RESOURCE CALCULATIONS J. Inwood, M. Lovell, S. Fishwick, University...

... on remote-field eddy current principles. The EM field attenuations and phase shifts from transmitter to receivers are precisely measured using innovative electronics and then quantitatively translated to single-layer casing thicknesses after correcting for variations in the material s EM properties...

... to refine stratigraphic models, explain petrophysical responses, and guide selection of plug locations for conventional and special core analysis. Digital HI-derived single mineral curves calibrated to X-Ray Diffraction Data (XRD) were imported as curves to display mineralogical variations with depth...