The influence and mechanism of porous structure on the deformation failure of cement
sheaths under hydraulic pressure is still unclear. To solve this problem, a net slurry cement …

With the continuous exploration and development of oil wells, we must pay attention to the
risk of leakage from abandoned wells. Therefore, it is necessary to plug and abandon the …

Debonding of well cement towards casing or rock, ie microannuli formation, is a typical
failure mode of cement barriers. Consequently, such microannuli may act as leak paths …

In the process of CO2 geological storage in the salt water layer, CO2 leakage along the
wellbore will seriously affect the effective storage of CO2 in the target geological area. To …

The study uses chemical and mineral admixtures to understand the critical processes
affecting the cement slurry characteristics, including rheological properties, free water …

Well integrity issues have been widely studied in the oil and gas sector; however, with
storage wells (eg towards natural gas, CO2 and H2), new challenges may arise due to the …

Abstract Carbon Capture and Storage (CCS) is an important solution for reducing global
CO2 emissions to the atmosphere. One common challenge for safe long-term geological …

Two types of cement sheaths with different porosities were prepared by using cement
materials and liquid silicon suspension. The distribution characteristics of the pore radius …

Major technological improvements have been seen in the drilling and completions of oil and
gas wellbores, to enable safer exploration and production of fossil fuels. On the other hand …