... of movable perched water is confirmed via direct extraction from core samples. The associated saturation profile is evaluated using logs and special core analysis (SCAL) measurements. The chemical composition of extracted water samples is compared with that of aquifer waters. In the second example, we...

... permeability estimation errors at well-log resolution, a 50% further decrease compared to the core support. The Timur-Coates model/approach is the most reliable for data sets with a priori information about irreducible water saturation, yielding less than 22% relative standard error. Yet, prior data...

... and the in-place saturations. In the Bohai Bay Basin, the as-received air-filled saturation measured in a laboratory has reached 10 ~ 30%, leading to significant uncertainty when using measured saturation to calibrate log-derived saturation. Saturation correction must be performed when attempting to assess...

... to solve the inverse problem and fit the coreflooding results, assuming functional shapes for relative permeability curves. In this work, the acquisition of rapid saturation profiles was used to derive relative permeability curves, without the need for pressure and volume reading, and assuming any...

... rocks with high confidence. We found the oil and water saturation can be accurately measured in preserved source rock plugs. Two-dimensional T 1 - T 2 NMR data were collected on preserved core plugs from five wells of a source rock reservoir using an inversion-recovery Carr-Purcell-Meiboom-Gill (CMPG...

... characterization economic geology saturation muon nuclear logging transaction co 2 doi neutron application symposium california chemical flooding methods climate change low-carbon energy future new frontier hydrogen PETROPHYSICS, VOL. 65, NO. 3 (JUNE 2024); PAGES 274 301; 17 FIGURES, 1 TABLE...

... dynamics rock type sedimentary rock geology reservoir characterization saturation pore porosity flow in porous media plug heterogeneity petrophysicist tor formation carbonate rock core analysis formation halliburton abraham grader digital chalk relative permeability evaluation grader...

... sample preparation, an NMR experiment, and data analysis. The acquisition and saturation of rock samples are described, and corresponding solutions are also considered. Detailed NMR experimental measurements, data setting, and calibration are addressed. Laplace inversion for different NMR experiments...

... analysis chemical flooding methods geological subdiscipline evaluation well logging enhanced recovery core analysis petrophysicist co 2 sustainable development reservoir characterization injection sandstone australia government reservoir geomechanics climate change saturation petrophysical...

..., the Petrophysical Data-Driven Analytics Special Interest Group (PDDA SIG) of the Society of Petrophysicists and Well Log Analysts (SPWLA) hosted a machine-learning contest aiming to develop data-driven models for estimating reservoir properties, including shale volume, porosity, and fluid saturation, based...

... simulations of mud-filtrate invasion, well logs, and formation-tester measurements to estimate the radial distance of invasion and the corresponding radial profile of water saturation. Numerical simulations are initialized with the construction of a multilayer petrophysical model. Initial guesses...

...Ian McGlynn; Toyli Anniyev; Feyzi Inanc; David Chace; Alexandr Kotov; Emmannuel Soans; Ardi Batubara A new slim multidetector pulsed-neutron wireline-logging tool has been developed for openhole or casedhole formation evaluation saturation analysis and time-lapse monitoring. With a greater neutron...

...Peiqiang Zhao; Yuetian Wang; Gaoren Li; Cong Hu; Jiarui Xie; Wei Duan; Zhiqiang Mao Hydrocarbon saturation is an important formation parameter and the basis for quantitative reservoir evaluation. However, the saturation models of shaly sandstones contain more parameters than clean sandstones...

... analysis measurement resistivity fraction core analysis numerical simulation data quality control doi data quality geological subdiscipline saturation core measurement composition effective method texas PETROPHYSICS, VOL. 64, NO. 5 (OCTOBER 2023); PAGES 753 772; 14 FIGURES, 3 TABLES. DOI...

... drilling fluid selection and formulation sustainable development core analysis geological subdiscipline evaluation site-specific evaluation doi permitting optimization saturation PETROPHYSICS, VOL. 64, NO. 5 (OCTOBER 2023); PAGES 580 620; 21 FIGURES. DOI:10.30632/PJV64N5-2023a1 Integrated...

... by the improved environmental compensation scheme of the newer tool. We performed both standalone estimates of CO 2 saturation from single-physics time-lapse measurements and simultaneous interpretation of multiple independent time-lapse measurements and studied the results side-by-side with openhole log...

...-invasion spatial distribution of fluids and electrolyte concentration around the borehole affects resistivity measurements with different depths of investigation (DOI). In the presence of deep mud-filtrate invasion, the assessment of water saturation in the uninvaded zone based on the deep resistivity log...

...-oil (GOC), gas-water (GWC), and oil-water (OWC) contacts in steel-cased wells, as well as methods to identify gas, steam, and waterflood front encroachment, calculate their saturations, and recognize problems in efficient reservoir depletion. This paper will focus solely on nuclear methods used...

.... They are both obtained in a laboratory after establishing the required initial conditions. As a matter of fact, before measuring imbibition relative permeability and capillary pressure, it is recommended to set initial rock reservoir conditions by establishing appropriate initial water saturation ( S wi...

... of days. This method is based on a new in-house system to acquire wirelessly resistivity indexes along a rock sample during centrifugation. The determination of the resistivity vs. saturation curve and the n exponent of Archie’s law is done thanks to an optimization algorithm. In this paper, we present...