Experimental quantification of the effect of oil based drilling fluid contamination on properties of wellbore cement

A Katende, Y Lu, A Bunger, M Radonjic - Journal of Natural Gas Science …, 2020 - Elsevier
Portland cement hydration is a chemically sensitive process impacted by temperature,
amount of water and the presence of any potential contaminants. Drilling fluids …

Review of porosity uncertainty estimation methods in computed tomography dataset

VAJ Jaques, A Du Plessis, M Zemek… - Measurement …, 2021 - iopscience.iop.org
X-ray computed tomography is a common tool for non-destructive testing and analysis. One
major application of this imaging technique is 3D porosity identification and quantification …

Changes of Multiscale Surface Morphology and Pore Structure of Mudstone Associated with Supercritical CO2-Water Exposure at Different Times

X Zhou, S Sang, Q Niu, K Zhang, F Liu, W Wang… - Energy & …, 2021 - ACS Publications
CO2 enhanced coalbed methane recovery (CO2-ECBM) has been confirmed as an effective
technology to improve coalbed methane (CBM) production; however, the injected CO2 and …

Digital cement integrity: A methodology for 3D visualization of cracks and microannuli in well cement

T Vrålstad, R Skorpa - Sustainability, 2020 - mdpi.com
Leakages of greenhouse gases, such as methane and carbon dioxide from wells, may have
considerable environmental consequences. Although much emphasis is currently put on …

Effect of mud on cement sheath integrity

R Skorpa, B Werner, T Vrålstad - SPE Norway Subsurface Conference …, 2019 - onepetro.org
Cement sheaths are among the most important well barrier elements and cement sheath
integrity is thus important to maintain zonal isolation. Repeated pressure cycling in a well …

Modelling of wellbore cement alteration due to CO2-rich brine interaction in a large-scale autoclave experiment

MC Chaparro, T Klose, A Hirsch, F Schilling… - International Journal of …, 2021 - Elsevier
The objective of the present study is to investigate wellbore cement alteration due to CO 2-
rich brine interaction under reservoir conditions. Hence, an experiment made with a unique …

The influence of pore system change during CO2 storage on 4D seismic interpretation

L Li, J Ma - Oil & Gas Science and Technology–Revue …, 2019 - ogst.ifpenergiesnouvelles.fr
A 4D seismic forward model constitutes the foundation of 4D seismic inversion. Here, in
combination with the Gassmann equation, the Digby model is improved to calculate the S …

[PDF][PDF] BIGCCS final report

R Aarlien - 2017 - sintef.brage.unit.no
I'm happy to say we achieved our objective. The CCS road is a long and winding one, but
BIGCCS played its part. I know that the know ledge base, results, and innovation projects …