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Keywords: resolution
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Journal Articles
Petrophysics 63 (06): 671–684.
Paper Number: SPWLA-2022-v63n6a7
Published: 12 December 2022
... bullets. The PSWC bullets, including novel designs, were shot in simulated downhole environments. Both control rotary plug samples and PSWC test core samples were imaged with high-resolution X-ray micro-computed tomography (micro-CT) at resolutions between 2 and 11 μm, and digital rock analysis...
Journal Articles
Petrophysics 62 (05): 477–485.
Paper Number: SPWLA-2021-v62n5a3
Published: 01 October 2021
... such as hydrocarbons, greenhouse gases, and water flow through their porous systems. Scale and resolution are among the most challenging factors for current 3D printing methods when attempting to replicate the pore architecture of natural porous media. Most 3D printing techniques have resolution restraints during...
Journal Articles
Petrophysics 60 (02): 240–254.
Paper Number: SPWLA-2019-v60n2a2
Published: 01 April 2019
...James Howard; Sam Lin; Shawn Zhang Image processing of high-resolution 3D images to create digital representation of pore microstructures for image-based rock physics simulations remains a highly subjective enterprise, despite the seemly precision associated with improving imaging resolutions...
Journal Articles
Petrophysics 60 (02): 297–304.
Paper Number: SPWLA-2019-v60n2a7
Published: 01 April 2019
... temperature changes within a sample during a test. High-resolution temperature arrays are available that measure changes in temperature of 0.1°C at 1-mm resolution. The optical backscatter reflectance (OBR) fiber senses both temperature and strain that can be separated through experiment design and signal...
Journal Articles
Petrophysics 59 (05): 694–702.
Paper Number: SPWLA-2018-v59n5a8
Published: 01 October 2018
... of millimeter resolution. After that, the length scale was increased using moving averages in the vertical direction. We investigated a thin-bed reservoir with layers of halite-filled sandstone alternating with layers free of halite at variable layer thicknesses. In this reservoir, the resulting synthetic...
Journal Articles
Petrophysics 59 (03): 373–396.
Paper Number: SPWLA-2018-v59n3a6
Published: 01 June 2018
... Characterization Upstream Oil & Gas CT image subsample image flow in porous media vertical sample conventional technique plug study permeability heterogeneity permeability macropore june 2018 Fluid Dynamics heterogeneity porosity evaluation voxel Artificial Intelligence resolution variation...
Journal Articles
Petrophysics 59 (01): 15–24.
Paper Number: SPWLA-2018-v59n1a1
Published: 01 February 2018
...), is a promising technique. However, DRP workflows are highly variable in terms of imaging tools, resolution of those tools, segmentation algorithms, handling of unresolved porosity, gridding of the resolved pore structure, and mathematical modeling of flow properties. As a result, users familiar with physical...
Journal Articles
Petrophysics 58 (06): 592–602.
Paper Number: SPWLA-2017-v58n6a3
Published: 01 December 2017
... analysis. In this study, we tested the resolution and accuracy of a polyjet 3D printer for generating rock proxies from a digital model of Berea sandstone. A 20×25-mm (length × diameter) cylindrical sandstone "macroplug" (21.6% porosity) and a smaller 3.5×4.0-mm "microplug" (21.3% porosity) were analyzed...
Journal Articles
Petrophysics 58 (06): 559–563.
Paper Number: SPWLA-2017-v58n6a6
Published: 01 December 2017
... or steps or truisms." 1 12 2017 1 12 2017 2017. Society of Petrophysicists & Well Log Analysts log analysis Thickness porosity correction resistivity resolution borehole uphole digital well log Upstream Oil & Gas variation Computation interpretation petrophysics...
Journal Articles
Petrophysics 56 (05): 457–478.
Paper Number: SPWLA-2015-v56n5a3
Published: 01 October 2015
... results. 1 10 2015 1 10 2015 2015. Society of Petrophysicists & Well Log Analysts Reservoir Characterization resolution total porosity evaluation Upstream Oil & Gas october 2015 porosity log analysis petrophysics october 2015 dielectric measurement Symposium...
Journal Articles
Petrophysics 56 (02): 140–146.
Paper Number: SPWLA-2015-v56n2a4
Published: 01 April 2015
... Although resistivity tools are commonly used in the petroleum exploration, they are not as common in the coal industry. Moreover, the vertical resolution of conventional resistivity tools might exceed several times the thickness of individual coal seams and cannot reliably be used for coal-properties...
Journal Articles
Petrophysics 55 (04): 294–303.
Paper Number: SPWLA-2014-v55n4a2
Published: 01 August 2014
... Intelligence Upstream Oil & Gas pore-lling event flow in porous media resolution Simulation experiment enhanced recovery scientific computing Engineering koroteev application Schlumberger physics experimental data direct hydrodynamic simulation wettability Modeling & Simulation Fluid...
Journal Articles
Petrophysics 54 (03): 216–223.
Paper Number: SPWLA-2013-v54n3-A1
Published: 01 June 2013
... Analysts Upstream Oil & Gas Imaging complex reservoir unconventional reservoir core Reservoir Characterization Knackstedt resolution subplug mineralogy tomogram registration porosity mineral permeability fragment fracture petrophysical characterization connectivity core material...
Journal Articles
Petrophysics 53 (05): 333–347.
Paper Number: SPWLA-2012-v53n5a2
Published: 01 October 2012
... quality Artificial Intelligence resolution well logging unique combination Upstream Oil & Gas prediction borehole log analysis neural network information normalization october 2012 interpretative algorithm wellbore porosity frost reconstruction instrument string instrument...
Journal Articles
Petrophysics 53 (03): 208–221.
Paper Number: SPWLA-2012-v53n3a4
Published: 01 June 2012
... in the same manner as wireline sonic tools do today, and even surpassing the resolution of wireline tools by taking advantage of the rotational behaviour of LWD tools. When we consider the real-time nature of LWD logging, new applications become possible, such as sonic geosteering, real-time sonic fracture...
Journal Articles
Petrophysics 52 (06): 452–456.
Paper Number: SPWLA-2011-v52n6a4
Published: 01 December 2011
...H.J. Lemmens; A.R. Butcher; P.W.S.K. Botha ABSTRACT Increased interest in shale and tight gas reservoir characterization has led to the adoption of FIB/SEM technology as the next step in resolution to visualize the pore network. The high resolution of a Scanning Electron Microscope (SEM) combined...
Journal Articles
Petrophysics 52 (02): 84–95.
Paper Number: SPWLA-2011-v52n2a1
Published: 01 April 2011
... caused by firmpad contact with the borehole wall would reduce the rate of penetration and could result in tool sticking or failure. The tool presented in this paper addresses the challenge by combining the best characteristics of a medium- resolution electromagnetic resistivity imager with the advantages...
Journal Articles
Petrophysics 51 (06).
Paper Number: SPWLA-2010-v51n6a1
Published: 01 December 2010
... across many decades of scale. Registration techniques are then used to couple information at different length scales. First an image of a 3D plug (4 cm, 20 micron voxel size) is correlated to a sample at macroporous resolutions (8 mm diameter, 4 micron voxel size). We then focus on coupling SEM...
Journal Articles
Petrophysics 50 (05).
Paper Number: SPWLA-2009-v50n5a3
Published: 01 October 2009
... the mnemonics mean and which curve to use for a specific application. The issues of statistical precision, resolution, and data sampling rate are strongly interrelated for CN tools. 1 10 2009 1 10 2009 2009. Society of Petrophysicists & Well Log Analysts resolution statistical...
Journal Articles
Petrophysics 50 (03).
Paper Number: SPWLA-2009-v50n3a5
Published: 01 June 2009
.... Badruzzaman et al (2007) also assumed a theoretical, non-commercial wireline density measurements to bed thickness, azimuth, and borehole angle. Their studies corroborated a previous indication (Radtke, et al 2006) that the benefits of enhanced resolution data-processing techniques vanish when applied...

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