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Keywords: saturation
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Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0120
..., and gas saturations, whether for initial input into a petrophysical model or as part of a time-lapse well monitoring program. Advancements in electronics and scintillator materials that take advantage of high-yield neutron generators work together to improve the accuracy of the raw output. Continued...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0033
... ABSTRACT Cased oil saturation is an essential parameter for middle and late oilfield development, which can provide the basis for the development program design. Neutron-gamma logging has been widely used in the determination of cased oil saturation. Recently, Carbon/Oxygen (C/O) logging...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0034
... and water saturation (SW) using gas and mud logging data. The approach used in this work is based on the Beda & Tiwary equation (B&T), a technique employed to estimate water saturation while drilling. This equation bears similarities to the known Archie equation, which also determines water...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0044
... is confirmed via direct extraction from core samples. The associated saturation profile is evaluated using logs and special core analysis measurements. The chemical composition of extracted water samples is compared with the aquifer waters. In the second example, we present a case of perched water...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0048
... ABSTRACT Formation evaluation, specifically the estimation of petrophysical properties (porosity, water saturation and fluid and mineral composition), is tightly dependent on the Rock Physics Model (RPM) used for interpretation of well logs and core data. RPMs are known to exhibit small...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0056
... the fact that well logs represent spatial averages of the properties from the multiple layers existing within the corresponding vertical resolution. The most common solution given to this problem is to use volumetric multimineral inversion, concomitant to an estimation of the water saturation. However...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0007
...). At equilibrium in an oil reservoir, Pc may be calculated based on the following equation: (equation) fluid dynamics structural geology rock type sedimentary rock saturation geologist flow in porous media geological subdiscipline spwla-2024-0007 reservoir geomechanics economic geology spwla 65...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0009
... ABSTRACT The electrical properties of hydrate reservoirs serve as a fundamental metrics for evaluating both porosity and saturation levels. Given the inherent instability of drilled hydrate core samples under ambient temperature and pressure conditions, coupled with the high cost...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0016
... on the diffusion of CO 2 , (ii) investigate the impact of water and hydrocarbon saturation on the CO 2 diffusivity in organic-rich mudrocks, and (iii) quantify the coupling effect of CO 2 adsorption/diffusion in kerogen nanopores on the apparent gas permeability. We used a realistic kerogen molecular model...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0019
... saturation. The reservoir rock classification revealed that the rocks under analysis are well represented by general porosity-permeability trend lines of Lucias’ rock fabric numbers. Hydraulic flow units revealed strong correlations to characteristic pore-scale dimensions and to post-depositional diagenetic...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0090
.... Through numerical simulation experiments, the porosity and saturation of each fluid component calculated by the proposed method are compared with the K-means method and the traditional GMM method to verify the accuracy of the proposed method. The results show that this method can not only effectively...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0091
... ABSTRACT In the domain of formation evaluation through well logging techniques, Nuclear Magnetic Resonance (NMR) stands out for its capacity to explore the geometrical characteristics of porous media under specific conditions. In the case of a core sample saturated with a single fluid...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0102
... and fluids. The well has been completed with a non-perforated cemented liner. Pulsed neutron logging is conducted every 3 months to monitor waterfront evolution and evaluate in-situ Water Saturation (Sw). Logging results allow to evaluate the waterfront evolution pace while also confirming that water...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0103
... ABSTRACT The pulsed neutron logging technique has been widely used to monitor the oil and gas saturation in oilfield development, and pulsed neutron-neutron (PNN) logging as one of pulsed neutron logging methods, uses He-3 detectors to detect the thermal neutron counts decay with time downhole...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0104
...) and injection logging tools (ILT), have emerged as a robust solution to aid in this formidable task. Pulsed-neutron logging instruments have been extensively utilized for fluid saturation monitoring in cased holes since their discovery in the early 1950s. Modern slim-type tools, especially those of the latest...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0107
... ABSTRACT Reliable and fast core saturation process forms the basis for many saturation-dependent measurements of petrophysical properties such as relative permeability and capillary pressure. Conventional laboratory-based methods for saturating tight core samples take significant time, making...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0122
... ABSTRACT Tight sandstones are commonly characterized by low porosity and permeability, complex pore structure and strong reservoir heterogeneity. Thus, it is difficult to accurately calculate the hydrocarbon saturation in tight sandstone reservoirs. The complex resistivity spectra of the rock...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0123
... clastic rock mudrock sedimentary rock reservoir geologist complex reservoir shale gas well logging reservoir characterization reservoir geomechanics saturation th annual logging symposium spwla 65 prediction shale reservoir gulf sandstone mudstone swt resistivity substitution...
Proceedings Papers

Publisher: Society of Petrophysicists and Well-Log Analysts
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0134
... evaluation aker bp permeability annual logging symposium spwla-2024-0134 petrophysical interpretation petrophysics hierarchy database westeng saturation efficiency ABSTRACT Big data in petrophysics, comprising both core measurements and dynamic statistics, offers transformative potential...

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