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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-2022-0036
... 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-2022-0002
... 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-2022-0022
... 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-2022-0001
... 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-2022-0035
... 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-2022-0103
... 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 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-2021-0038
... data mining upstream oil & gas input log reservoir characterization artificial intelligence petrophysical uncertainty nd annual logging symposium workflow well logging water saturation formation evaluation spwla-2021-0038 marco pirrone mc simulation propagation log analysis...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0031
... of these methods have a large error when compared to production data. A large source of the error seems to be that water saturations in tight rocks have been consistently underestimated in the traditional laboratory measurement techniques. Operators need improved fluid saturation measurements to better constrain...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0074
... anisotropic rock can greatly affect calculated water saturations (Sw), and ultimately oil in place. Further, several possible solutions are posited to resolve the riddle of resistivity. The root cause of the differences between the two measurement techniques is in how each tool measures the vertical...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0052
... Abstract Conventional resistivity models often overestimate water saturation in organic-rich mudrocks and require extensive calibration efforts. Conventional resistivity-porosity-saturation models assume brine in the formation as the only conductive component contributing to resistivity...

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