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Keywords: water saturation
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Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0103
... in the matrix response is important because it implies that structural water will be assigned to the matrix and not the pore space in petrophysical interpretations that use these matrix properties, particularly for neutron porosity and Sigma-based water saturation. Collectively, these data enable accurate...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0117
...SPWLA 63rd Annual Logging Symposium, June 10-15, 2022 DOI: 10.30632/SPWLA-2022-0117 SIMULTANEOUS ASSESSMENT OF WATER SATURATION AND WATER SALINITY FROM THE JOINT MULTI-FREQUENCY INTERPRETATION OF REAL AND IMAGINARY PARTS OF DIELECTRIC PERMITTIVITY MEASUREMENTS Zulkuf Azizoglu and Zoya Heidari...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0002
... for water saturation of core plugs, the average uncertainty is improved from 13%, when MN is used, down to 4%, when m and n are used. INTRODUCTION Archie Parameters m and n Estimation of hydrocarbon reserves through the use of electrical logs has been employed by petrophysicists since Archie published his...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0001
... Abstract Archie developed his model based upon trends observed in formation resistivity factor - porosity and resistivity index-water saturation plots. The trends appear when the data is plotted on log-log graph paper. The trends are apparently straight lines on log-log paper, which means...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0004
... Abstract From the first wireline log in 1927, formation evaluation always had to provide estimates for water saturation to identify and quantify hydrocarbon-bearing reservoir rocks. Formation conductivity (or resistivity) was the single leading quantity for input to various saturation models...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0019
... laboratory analysis fluid dynamics water saturation petrophysical property carbonate spwla 63 rd annual logging symposium decomposition permeability total porosity porosity interpretation spwla-2022-0019 drilling fluids and materials drilling fluid formulation vug base function fraction...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0022
... formation or fluid parameter, comparable to Archie's simple water-saturation relationship. Both microscopic and macroscopic formation parameters contribute to dispersion: water-filled porosity, cation exchange capacity (CEC), conductive minerals, and formation factor. Past studies in research and in log...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0027
... distributions) of the samples at different water saturation levels. Image analysis is used to obtain geometrical constriction factor. We obtain electrical resistivity of the samples through numerically solving Maxwell's equations, which is used as an input in the introduced model. We successfully applied...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0030
... drilling fluid chemistry drilling fluid selection and formulation machine learning well logging formation damage drilling fluids and materials fluid loss control simulation porosity water saturation spwla 63 drilling fluid property upstream oil & gas borehole log analysis...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0035
... Abstract A Staged Differential Effective Medium (SDEM) model based on the Hanai-Bruggeman equation is applied to interpret water saturation in shaly sands. In this model, the conductivity of the formation changes when different volumes of clays, oil, and quartz (inclusions) are successively...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0036
... flow in porous media spwla-2022-0036 sp suppression well logging transport number spwla 63 reservoir characterization upstream oil & gas water saturation geophysics log analysis fluid dynamics sp measurement hydrocarbon saturation doi amplitude glass bead equation rd annual...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0057
... Abstract A new iterative modelling workflow has been designed to reduce uncertainty of water saturation (Sw) calculations in the tight Barik sandstone in the Sultanate of Oman. Results from this case study indicate that Sw can be overestimated by up-to twenty saturation units...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0084
... value. This reduces the shoulder-bed effects in the evaluation of well logs in thin laminations. We then estimate the geometric model parameters, which are shape-related factors, for each rock class and, subsequently, the depth-by-depth water saturation. Additional inputs to the workflow include...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0052
... May 17-20, 2021. minimizing the difference between the measured resistivity and the resistivity, estimated from Pore ABSTRACT Combination Modeling. Conventional resistivity models often overestimate We applied the new rock physics model to two wells water saturation in organic-rich mudrocks...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0038
... the petrophysical uncertainty to used to estimate the important petrophysical properties legacy well data for which conventional approaches are (e.g. shale volume, porosity, water saturation) with not an option, in terms of time-efficiency. uncertainty through the mechanistic model and MC simulations. In turn...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0006
.... machine learning artificial intelligence well logging cape vulture main spwla 62 reservoir characterization upstream oil & gas nd annual logging symposium spwla-2021-0006 log analysis norwegian sea communication evaluation resistivity water saturation well 6608 resistivity measurement...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0031
...- on total water saturation and the oil-in place 2000 s each basin including the Williston, Uinta and estimates based on the improved accuracy of the DJ basins, began to be exploited for unconventional closed retort technique. horizontal drilling opportunities. The basins continue to be studied, targeted...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0015
...SPWLA 62nd Annual Logging Symposium, May 17-20, 2021 DOI: 10.30632/SPWLA-2021-0015 ADAPTATION OF CRUSHED ROCK ANALYSIS TO INTACT ROCK ANALYSIS FOR IMPROVING WATER SATURATION ASSESSMENT AND FAST PRESSURE DECAY PERMEABILITY QUANTIFICATION Kai Cheng, J. Alex Zumberge, Stephanie E. Perry, and Patrick M...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0072
... log analysis wolfcamp formation assessment well logging geometric model parameter rock component artificial intelligence water saturation model parameter nd annual logging symposium waxman-smit model volumetric concentration pyrite conductivity image log machine learning upstream...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0034
... structure, geometrical distribution of the constituting fluids, and spatial distribution of minerals. This yields to significant errors in assessment of water saturation especially in rocks with complex pore structure. Therefore, it becomes important to quantify the impacts of pore structure and spatial...

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