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Keywords: numerical simulation
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Proceedings Papers

Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-KKKK
... complex features present in the training dataset. The dataset is synthetically generated using fast numerical simulations implemented with The University of Texas at Austin Petrophysical and Well-log Simulator (3D UTAPWeLS). We assume a vertical well, horizontal layers, and axial symmetric invasion...
Proceedings Papers

Paper presented at the SPWLA 59th Annual Logging Symposium, June 2–6, 2018
Paper Number: SPWLA-2018-I
... setup has been consistently tested with different materials behind the casing, and the results has been compared and verified with numerical simulations. The laboratory results and the numerical simulations show good correlation. Further, the sensitivity of the laboratory setup has been investigated...
Proceedings Papers

Paper presented at the SPWLA 59th Annual Logging Symposium, June 2–6, 2018
Paper Number: SPWLA-2018-VVV
... both conventional and focused sampling tools, and account for complex tool operating modes. Exploiting cloud-based simulation, we demonstrate how accurate proxy models can be constructed from a large number of pre-computed numerical simulations. The resulting proxy models enable rapid interpretation...
Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-DD
.... Identification and correction of these effects is essential for accurately evaluating new prospects, quantifying reserves, and predicting future production performance. Radial numerical simulations of mud-filtrate invasion and wireline formation-tester pressure measurements were performed to evaluate...
Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-X
..., the interpretation of sonic logs is best achieved through forward modeling and inversion. However, forward modeling using numerical simulation requires high computational time and memory resources, making real-time interpretation impractical. This paper introduces a new interpretation method of sonic logs acquired...
Proceedings Papers

Paper presented at the SPWLA 55th Annual Logging Symposium, May 18–22, 2014
Paper Number: SPWLA-2014-YY
... the effect of petrophysical properties of porous media on the spatial distribution of magnetic nanoparticles injected as contrasting agents to the formation. We achieved this goal by developing a two-phase fluid flow numerical simulator for transport of injected nanoparticles in homogenous and heterogeneous...
Proceedings Papers

Paper presented at the SPWLA 54th Annual Logging Symposium, June 22–26, 2013
Paper Number: SPWLA-2013-VVV
... of velocity differences between fluid phases. Subsequently, a nonlinear inversion algorithm estimates saturation-dependent relative permeability by minimizing quadratic differences between borehole measurements of velocity, pressure, and holdup of the two phases, and their numerical simulations. Estimations...
Proceedings Papers

Paper presented at the SPWLA 54th Annual Logging Symposium, June 22–26, 2013
Paper Number: SPWLA-2013-NN
... rocks. First, we investigate the reliability of conventional resistivity-porosity-saturation models in the assessment of fluid saturations in organic-rich source rocks using well logs and core measurements in the Haynesville shale-gas formation. We then numerically simulate electric field, electric...
Proceedings Papers

Paper presented at the SPWLA 53rd Annual Logging Symposium, June 16–20, 2012
Paper Number: SPWLA-2012-085
... are populated within previously determined petrophysical layers, with specific petrophysical properties adjusted until matching all available well logs and core data with numerical simulations. In addition, NMR T2 distributions are matched with numerical simulations based on a recently developed procedure...
Proceedings Papers

Paper presented at the SPWLA 53rd Annual Logging Symposium, June 16–20, 2012
Paper Number: SPWLA-2012-073
... measurement spwla 53 well logging total porosity numerical simulation depth interval saturation log analysis calculation fluid saturation sequence NMR data equation Simulation water saturation algorithm interpretation porosity Symposium mud-filtrate invasion SPWLA 53rd Annual Logging...
Proceedings Papers

Paper presented at the SPWLA 52nd Annual Logging Symposium, May 14–18, 2011
Paper Number: SPWLA-2011-VV
... fluid flow model with a reservoir flow model and use the resulting coupled model to simulate PL measurements. Permeability estimation is performed by minimizing the difference between measurements of fluid pressure and velocity and their corresponding numerical simulations. Synthetic cases are used...
Proceedings Papers

Paper presented at the SPWLA 50th Annual Logging Symposium, June 21–24, 2009
Paper Number: SPWLA-2009-44440
... and their corresponding impact on fluid properties, such as viscosity and density, in the near wellbore region. Numerical simulations verify the consistency of the measurements and quantify the role played by petrophysical, fluid, and geometrical properties on the time evolution of the measurements. We adjust key...
Proceedings Papers

Paper presented at the SPWLA 50th Annual Logging Symposium, June 21–24, 2009
Paper Number: SPWLA-2009-39813
..., relative permeability, capillary pressure, etc.) with the physics of mud-filtrate invasion. Well logs are numerically simulated prior to and after invasion by invoking specific petrophysical interpretation models (e.g. Archie, Waxman-Smits, Biot-Gassmann, etc.) and by reproducing actual commercial tool...
Proceedings Papers

Paper presented at the SPWLA 50th Annual Logging Symposium, June 21–24, 2009
Paper Number: SPWLA-2009-80919
... voxels are assumed to be conductive to simulate the conduction of water film. The impacts of wettability and grain size on electrical properties are discussed. The numerical simulation approach developed in the paper allows one to predict resistivity index precisely in the whole water saturation range...
Proceedings Papers

Paper presented at the SPWLA 49th Annual Logging Symposium, May 25–28, 2008
Paper Number: SPWLA-2008-SS
... it neglects presence of mud-filtrate invasion, numerical simulation enables the quantitative appraisal of realistic tool and formation properties under a wide range of deviation angles. The analysis is centered about four synthetic rock formations (low-to high-permeability rocks) to investigate the effect...
Proceedings Papers

Paper presented at the SPWLA 47th Annual Logging Symposium, June 4–7, 2006
Paper Number: SPWLA-2006-PP
... We quantify the relative effects of shoulder beds, layer thickness, invasion, and sand-shale laminations on monopole and dipole borehole sonic logs. This is accomplished through numerical simulation of sonic waveforms that includes all of the propagation well logging variation...
Proceedings Papers

Paper presented at the SPWLA 45th Annual Logging Symposium, June 6–9, 2004
Paper Number: SPWLA-2004-UU
... for both conductive and resistive fluids. Using numerical simulation, we have predicted the tool responses for the various resistivity models such as vertical resistive fractures in shales and conductive fractures in hydrocarbon-bearing sands. Our results apply to both natural and drilling-induced...
Proceedings Papers

Paper presented at the SPWLA 44th Annual Logging Symposium, June 22–25, 2003
Paper Number: SPWLA-2003-GG
... machine learning flow in porous media noise 0 relative permeability neural network Simulation distribution index Artificial Intelligence Fluid Dynamics numerical simulation Symposium Upstream Oil & Gas endpoint different value sample quality spwla 44 inversion capillary...
Proceedings Papers

Paper presented at the SPWLA 40th Annual Logging Symposium, May 30–June 3, 1999
Paper Number: SPWLA-1999-CCC
... more precise Sw by using the Rt the method provides. analytic solution numerical simulation inversion interpretation well logging Efficiency lateral resistivity log Symposium Upstream Oil & Gas invasion radius ri geophysics China log analysis Formation Resistivity apparent...
Proceedings Papers

Paper presented at the SPWLA 37th Annual Logging Symposium, June 16–19, 1996
Paper Number: SPWLA-1996-Y
... parameters and a 3-D near wellbore numerical simulator for a comprehensive study of problems associated with WFT data interpretation. Case studies include sensitivity to formation damage, internal probe diameter, fluid compressibility and viscosity, formation permeability, drawdown tank volume, formation...

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