Understanding the tensile strength and failure mechanism of rock–cement interfacial
transition zone (ITZ) is of vital significance to the sealing integrity of cement sheath under …

Cement sheath integrity is a critical concern in the successful implementation of geologic
carbon capture and storage (CCS) projects. Conventional ordinary Portland cement (OPC) …

The mechanical integrity of cement sheath during reservoir stimulation is critical for oil and
gas wells. It is essential to optimize and design a cement slurry system that not only meets …

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 …

Wellbore leakage is complicated to understand due to the range of potential leakage
pathways and uncertainties regarding their capacities. In this study we present a novel …

Squeeze cementing is a process used to repair leaking oil and gas wells, in which a cement
slurry is driven under pressure to fill an uneven leakage channel. This results in a Hele …

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 …

Integrity of the cement/casing interface is an essential element of establishing an effective
barrier system in cased and cemented wellbores. Failure to establish and maintain an …

We present an experimental and numerical study of the turbulent displacement of
viscoplastic fluids in a horizontal eccentric annulus. Several experiments where a weighted …

Cement-rock interface is a major component of the wellbore barrier system. Leakage may
result from the poor bonding between cement and rock interface. In this paper we investigate …