June 8, 2020
Have you wondered why the density of the set cement may be lower than designed in high temperature sedimentation tests? Have you ever noticed that slurry […]
January 10, 2020
Introduction For annular gas migration to occur (red zone) three conditions must be met as shown in the diagram above. The hydrostatic pressure (PH) in the […]
September 17, 2019
May 4, 2019
It is important to consider the thermal properties of thermoset resins when applying them to zonal isolation applications. The key resin properties are the heat of […]
April 10, 2019
Thermoset resins, such as polyester, vinyl ester and epoxy resins, are being used for specialised sealing applications in oil and gas wells. Two advantages of these […]
November 19, 2018
The fourth article in the series linking chemical shrinkage of cement systems to well integrity and zonal isolation covers the use of expanding agents. The articles […]
September 23, 2018
Bulk volume change of hydrating Portland cement systems The third article in the series linking chemical shrinkage of cement systems to well integrity and zonal isolation. […]
September 4, 2018
Chemical shrinkage during hydration of Portland cement This is the second article in the series linking the chemical shrinkage of hydrating Portland cement systems to well […]
July 17, 2018
Shrinkage and expansion of Portland cement systems The chemical shrinkage of hydrating Portland cement systems, the resulting bulk volume changes and the potential consequences for hydraulic […]
June 28, 2018
INPI (The French National Industrial Property Institute) has published a report, detailing the top 50 companies/institutions with the most patent applications published in 2017. The report […]
