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Keywords: sandstone
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Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 61 (02): 151–161.
Paper Number: SPWLA-2020-v61n2a2
Published: 01 April 2020
... routine core saturation measurements often coupled with ultrasonic measurements, such as resistivity, X-ray tomography or simple fluid volume accounting. Successful validation of our apparatus against a conventional benchtop ultrasonic measurement system was performed using a dry Berea sandstone core...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 61 (01): 38–71.
Paper Number: SPWLA-2020-v61n1a1
Published: 01 February 2020
... determine parameters of the virgin formation and invaded zone accurately. log analysis BKZ sandstone Upstream Oil & Gas Vemkz well logging typical western siberian reservoir environment Artificial Intelligence numerical simulation petrophysics february 2020 boundary resistivity electrode...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 61 (01): 112–127.
Paper Number: SPWLA-2020-v61n1a5
Published: 01 February 2020
... porosities under variable shale and hydrocarbon effects. The inflection between the two boomerang limbs marks the boundary between shoreface sandstones and offshore shale-type lithologies. Compared with subjective V sh cutoffs, boomerang inflections are more objectively defendable signatures defining net and...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 60 (03): 409–420.
Paper Number: SPWLA-2019-v60n3a4
Published: 01 June 2019
... inversion-recovery pulse sequence. Here, a modified fast double-shot T 1 pulse sequence is applied to conventional rock formations, allowing these samples to porosity and permeability values are recovered for a selection of brine-saturated sandstone and carbonate core plugs. This double-shot T 1 measurement...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 60 (02): 240–254.
Paper Number: SPWLA-2019-v60n2a2
Published: 01 April 2019
... and physical. 1 4 2019 1 4 2019 2019. Society of Petrophysicists & Well Log Analysts Upstream Oil & Gas core analysis micro-ct image Fluid Dynamics Simulation Artificial Intelligence resolution image porosity conductivity resolution image sandstone uncertainty...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 60 (02): 326–334.
Paper Number: SPWLA-2019-v60n2a9
Published: 01 April 2019
...F. Agostini; P. Egermann; L. Jeannin; E. Portier; F. Skoczylas; Y. Wang This paper deals with a study of the gas relative permeability of tight sandstones under loading. Specific experiments have been designed and the experimental measurements obtained show that, not only the absolute permeability...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (03): 334–353.
Paper Number: SPWLA-2018-v59n3a4
Published: 01 June 2018
... response of well-sorted clean sandstones in the spectral induced polarization (SIP) frequency range and the dielectric-dispersion frequency range. The model is based on a differential effective-medium approach that accounts for both the Maxwell-Wagner interfacial polarization related to the rock texture...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (02): 118–135.
Paper Number: SPWLA-2018-v59n2a1
Published: 01 April 2018
... papers discuss the thin-bed formation evaluation problem, very few publications address issues related to laminated sand-silt-clay reservoirs. This paper partly addresses this literature scarcity. INTRODUCTION Laminated sand-shale sediments, i.e., alternating thinly bedded sandstone and mudstone beds...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (02): 136–152.
Paper Number: SPWLA-2018-v59n2a2
Published: 01 April 2018
...Marta H. Jácomo; Ricardo I. F. Trindade; Everton L. de Oliveira; Carlson de M. M. Leite; Elton Tadeu Montrazi; Mariane Andreeta; Tito J. Bonagamba Continuous chlorite coats are known to preserve the porosity in deeply buried sandstones by forming physical barriers to quartz early overgrowth...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (02): 113–117.
Paper Number: SPWLA-2018-v59n2t1
Published: 01 April 2018
... mastered the interpretation of low-contrast/low-resistivity shaly sandstone formations. Or so he thought. Only too soon, Easy Money crashed and burned by missing a low-resistivity pay zone in what appeared to be a clean sandstone. Since it looked to be shale-free, straight Archie was used resulting in too...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (01): 15–24.
Paper Number: SPWLA-2018-v59n1a1
Published: 01 February 2018
... pressure data Upstream Oil & Gas absolute permeability Artificial Intelligence drp data sandstone plug physical measurement laboratory vendor porosity digital rock physics vendor laboratory flow in porous media resolution prediction quarter plug permeability February 2018...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (01): 62–71.
Paper Number: SPWLA-2018-v59n1a6
Published: 01 February 2018
... & Well Log Analysts Upstream Oil & Gas core analysis Reservoir Characterization halite experiment cement porosity salt saturation sediment macroplug salt-saturated sample miniplug pore space mxct image halite cement sandstone core plug computed tomography investigation salt...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 58 (02): 126–140.
Paper Number: SPWLA-2017-v58n2a4
Published: 01 April 2017
... water. In order to investigate the T 2 -shortening, we performed 1D and 2D NMR experiments on samples of chalk, kaolinitic sandstone, and chloritic greensand, saturated either with water, oil or oil/water at irreducible water saturation. The 1D NMR experiment involved determination of T 2 spectrum...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 56 (01): 15–22.
Paper Number: SPWLA-2015-v56n1a1
Published: 01 February 2015
... balance, by using fast synchrotron-based X-ray computed microtomography. Oil mobilization under unsteady-state displacement has been studied for sintered glass, sandstone and carbonate rock, which demonstrate distinctly different behavior with respect to the cluster-size distributions and respective time...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 56 (01): 32–44.
Paper Number: SPWLA-2015-v56n1a3
Published: 01 February 2015
... Analysts core analysis digital rock model coupling multiphase hydrodynamic nmr pore-scale modeling Upstream Oil & Gas Simulation Schlumberger log analysis modeling sandstone petrophysics february 2015 saturation equation Evseev well logging mineral oil relaxation Dinariev...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 55 (06): 587–597.
Paper Number: SPWLA-2014-v55n6a4
Published: 01 December 2014
... techniques were applied on 3D computed-tomography (CT) scan images of sandstone and carbonate rock samples as well as synthetic organic-rich mudrocks. We showed that the new model is more reliable for assessment of water-filled porosity compared to the conventional CRIM, in the 12 sandstone and carbonate...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 55 (04): 333–348.
Paper Number: SPWLA-2014-v55n4a6
Published: 01 August 2014
..., indicates that the siliceous ooze is relatively stiff. Amplitude-versus-offset analysis indicated that an oil-saturated sandstone layer can be distinguished from water-saturated siliceous ooze. 1 8 2014 1 8 2014 2014. Society of Petrophysicists & Well Log Analysts Reservoir...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 55 (03): 253–259.
Paper Number: SPWLA-2014-v55n3a5
Published: 01 June 2014
... water. 1 6 2014 1 6 2014 2014. Society of Petrophysicists & Well Log Analysts debrite porosity fraction well logging shaly-sand porosity computation sequence log analysis total porosity sandstone Upstream Oil & Gas shale effective porosity sedimentary...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 55 (01): 51–56.
Paper Number: SPWLA-2014-v55n1a5
Published: 01 February 2014
... conductivity in the borehole. The new approach discussed in this article is a petrographic-coded two-step model for the derivation of a "thermal-conductivity log" from an acoustic log. Basic data for the model calculations are laboratory measurements on gneiss, granite, basic magmatic rocks, and sandstone. The...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 55 (01): 14–23.
Paper Number: SPWLA-2014-v55n1a1
Published: 01 February 2014
... sandstone. However, as more wells today are being drilled in more complex shaly-sand reservoirs, the Archie equation is no longer valid to describe these reservoirs. The dual-water model was developed in 1982 in an attempt to accurately transform resistivity of the shaly sands into water saturation by...

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