[HTML][HTML] Automatic interpretation of cement evaluation logs from cased boreholes using supervised deep neural networks

EM Viggen, IA Merciu, L Løvstakken… - Journal of Petroleum …, 2020 - Elsevier
The integrity of cement in cased boreholes is typically evaluated using well logging.
However, well logging results are complex and can be ambiguous, and decisions …

Automatic multiwell assessment of flow-related petrophysical properties of tight-gas sandstones based on the physics of mud-filtrate invasion

M Bennis, C Torres-Verdín - SPE Reservoir Evaluation & Engineering, 2023 - onepetro.org
Petrophysical interpretation of borehole geophysical measurements in the presence of deep
mud-filtrate invasion remains a challenge in formation evaluation. Traditional interpretation …

Using formation-tester measurements to estimate depth of invasion and water saturation in deeply-invaded tight-gas sandstones

TS Mohamed, M Bennis, C Torres-Verdín… - SPWLA Annual …, 2023 - onepetro.org
Mud-filtrate invasion displaces in-situ formation fluids away from the wellbore in porous and
permeable rocks. In the presence of water-base mud (WBM), invasion is accompanied by …

Best practices in automatic permeability estimation: machine-learning methods vs. conventional petrophysical models

O Raheem, W Pan, MM Morales… - … -The SPWLA Journal of …, 2024 - onepetro.org
Several physics-based and empirical models have been developed in the past to estimate
permeability from well logs. Estimation of flow-related petrophysical properties from …

Petrophysical interpretation of logging-while-drilling borehole measurements in the presence of electrical anisotropy, mud-filtrate invasion, noise, and well deviation …

M Bennis, C Torres-Verdín - Geophysics, 2023 - library.seg.org
Petrophysical interpretation of logging-while-drilling (LWD) borehole measurements in the
presence of electrical anisotropy, mud-filtrate invasion, noise, and well deviation effects …

Assessment of Depth of Mud-Filtrate Invasion and Water Saturation Using Formation-Tester Measurements: Application to Deeply Invaded Tight-Gas Sandstones

M Bennis, TS Mohamed, C Torres-Verdín… - … -The SPWLA Journal …, 2023 - onepetro.org
Formation pressure/fluid measurements are impacted by mud-filtrate invasion, which may
require long fluid pumpout durations to acquire hydrocarbon samples with minimal mud …

Efficient Bayesian inversion of borehole geophysical measurements with a gradient‐based Markov chain Monte Carlo method

T Deng, J Ambía, C Torres‐Verdín - Geophysical Prospecting, 2023 - earthdoc.org
Well logs are geophysical measurements of rock properties acquired continuously along a
borehole. Because of the physics underlying their operation, borehole logging instruments …

New methods for the interpretation of borehole geophysical measurements and core data acquired in spatially complex rocks

M Bennis - 2022 - repositories.lib.utexas.edu
Reliable assessment of in situ storage and flow properties of rocks from borehole
geophysical measurements and core data is crucial for appraising subsurface fluid …

Probabilistic petrophysical and compositional interpretation of well logs and core data via Bayesian inversion

T Deng - 2022 - repositories.lib.utexas.edu
A critical component of Formation Evaluation is the estimation of in situ petrophysical
properties and solid/fluid composition of rocks from multiple well logs and core laboratory …

Numerical Simulation of Well Logs Based on Core Measurements: An E? ective Method for Data Quality Control and Improved Petrophysical Interpretation

M Bennis, C Torres-Verdín - Petrophysics-The SPWLA Journal of …, 2023 - onepetro.org
Data quality of well logs and laboratory measurements is crucial for accurate petrophysical
interpretations in formations with complex solid compositions, thin beds, and adverse …