...Allen Britton; Katrina Cox; S. Mark Ma A thin-section (TS) image-based artificial intelligence (AI) model, leveraging an associated database of 100 conventional core samples, has been developed and validated for the determination of analog petrophysical properties when conventional core...

... spectrum amplitude magnetization procedure experiment journal nuclear magnetic resonance permeability relaxation information sequence determination PETROPHYSICS, VOL. 65, NO. 2 (APRIL 2024); PAGES 173 193; 22 FIGURES, 8 TABLES. DOI:10.30632/PJV65N2-2024a3 Core Analysis Using Nuclear Magnetic...

... of liquids equilibrium, desiccation, and imbibition in fresh shale samples, determination of activation energy of hydrocarbons in shales, monitoring changes in a shale sample during liquid flooding experiments, and direct measurements on kerogen. 1 8 2023 20 9 2023 20 9 2023 8 12 2023...

... 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...

... years, dipole shear-wave reflection imaging technology has been effectively applied to identify near-well formation fractures and determine their orientation, but the evaluation of the fluid-conducting effectiveness of the acoustically imaged fractures remains a challenging task. To accomplish this task...

...-lambda using mineralogy, and other variants, have often been used, with moderate success. In addition to permeability, the determination of the uncertainties, both epistemic (model) and aleatoric (data), are important for interpreting variations in the predictions of the reservoir models. In this paper...

...Steffen Berg; Ying Gao; Apostolos Georgiadis; Niels Brussee; Ab Coorn; Hilbert van der Linde; Jesse Dietderich; Faruk Omer Alpak; Daniel Eriksen; Miranda Mooijer-van den Heuvel; Jeff Southwick; Matthias Appel; Ove Bjørn Wilson The critical gas saturation was directly determined using micro-CT flow...

... for characterization. The traditional shale-characterization technique adopts mineralogical analysis for the inorganic constituent and the total organic carbon (TOC) for the organic matter (kerogen). However, despite modern laboratory analytical techniques, the direct and simultaneous determination of the organic...

...Dahai Wang; Jun Peng ABSTRACT Water saturation is one of the a few key reservoir properties, if not the most important one, for pay-zone identification and, hence, reserves determination. The oil industry uses resistivity logs, with help of porosity logs, to calculate water saturation based...

... for wettability determination since the 1950s. The NMR signal, however, is also sensitive to several other fluid and rock properties, for example viscosity and pore-size distribution, making the practical extraction of wettability information from NMR data not straightforward. NMR has, however, two considerable...

...Paul R. Craddock; Laurent Mossé; Carolina Bernhardt; Alberto C. Ortiz; Federico Gonzalez Tomassini; Iain C. Pirie; Pablo Saldungaray; Andrew E. Pomerantz The determination of accurate density porosity requires an accurate matrix density. This determination is challenging in organic-rich shale using...

...Dan Olsen A densitometer is used for quantitative density determinations of fluids being produced from core samples during flooding experiments at reservoir conditions. The densitometer is situated in the flowline immediately after the core holder, and measures the density of all fluids being...

... zones and aids in the determination of sweet spots for landing horizontal drainholes. We describe a new method to determine TGIP directly from nuclear magnetic resonance (NMR) logs, and demonstrate how this can be further improved with multisensor analysis. Gas-shale resources are more difficult...

... perceived as a nuisance, because all the depths announcements otherwise need to be revised. However, the real consequences of depth-determination shortcomings are often only seen long after drilling and logging the well. This paper reviews the key methodologies used in wireline depth determination...

...Sandeep Ramakrishna; Richard Merkel; Ron Balliet; Margaret Lessenger The geologic complexity of Rocky Mountain reservoirs requires innovative techniques in the acquisition and interpretation of log and core data. Similarly, petrophysical models used to determine hydrocarbons inplace and reservoir...

... is essential. If the Darcy-Klinkenberg model is thought to be a satisfactory gas-flow model for these tight formations, the full characterization can be achieved by determining both the intrinsic permeability, k l , and Klinkenberg coefficient b . In this work, the conditions under which reliable estimates...

...Jaideva C. Goswami; Denis Heliot; Jacques R. Tabanou; David F. Allen ABSTRACT An efficient method for determining regional dip angles and formation properties in high angle wells is presented. As a first step, logs are processed to detect similar features. The feature extraction process is speeded...

...D. Wagner; B. Müller; M. Tingay ABSTRACT Tool decentralization is a major problem in the analysis of six-arm caliper data, particularly in highly deviated wells. It precludes accurate determination of borehole geometry and hence, interpretation of borehole volume, stratigraphic horizons and present...

...X Chen; L.C. Kuang; Z.C. Sun Parameters in Archie's equation are usually determined in labs through experiments on the electric properties of rocks. We discuss a new method using saturation analysis data to determine the parameters. Correlations among saturation, resistivity, and porosity derived...

... of capillary pressure curves can now be determined using the centrifuge technique. The principle of the method is to keep the fluid produced during drainage in contact with the sample while decreasing the speed of rotation, to allow that fluid to imbibe spontaneously step-by-step (positive imbibition). During...