Volatile markets and harsh locations and downhole conditions pose severe challenges for
ensuring safe and long-lasting intact well conditions. Well integrity is a crucial issue in the …

The rheological behavior of cement slurries is important in trying to prevent and eliminate
gas-migration related problems in oil well applications. In this paper, we review the …

Enhanced grid reconstruction ability of oil well cement paste has been confirmed as a
promising solution to inhibit particle sedimentation caused by the uncontrolled rheological …

In this study, inductance-type electrical conductivity measurement (IECM) was performed to
study the electrical conductivity of different formulations of cement slurry. Low-field nuclear …

The pore connectivity of cement slurry is an important parameter to be considered when
investigating short-term gas migration in the cementing engineering of natural gas wells …

Gas migration in oil and gas wells is defined as gases and/or fluids from adjacent formations
invading a freshly cemented annulus. During well completions, gas and/or fluids can migrate …

This study investigates the pore structure of oil well cement slurry (OCS) in the suspension–
solid transition stage and the effect of the hydrated products on the pore structure via …

This study investigated the hydration kinetics and microstructure of oil-well cement slurry in
the early hydration stage using calorimetry, X-ray powder diffraction, thermogravimetry …

A modified wellbore simulation chamber (MWSC) was used to simulate gas migration
through cemented annuli at early ages. A series of gas migration tests were performed on …

Understanding the pore structure of oil-well cement slurry during early hydration is key to
resolving short-term gas migration in natural gas wells. This study evaluated the three …