This review presents the latest update, applications, techniques of the NMR tools in both
laboratory and field scales in the oil and gas upstream industry. The applications of NMR in …

Weighting agents such as barite, micromax, ilmenite, and hematite are commonly added to
drilling fluids to produce high-density fluids that could be used to drill deep oil and gas wells …

The infiltration of drilling fluids into underground rocks during drilling can cause adverse
effects such as underground fluid loss, formation damage, and borehole collapse. An …

The properties of oil and gas formation could be significantly damaged during drilling and
completion operations as a result of mud invasion, fluid incompatibility and interaction with …

The oil-based mud filtrate will invade the formation under the overbalanced pressure during
drilling operations. As a result, alterations will occur to the nuclear magnetic resonance …

In drilling engineering, mudcake is formed when the drilling fluid invades the near-wellbore
zone, which can reduce drilling fluid leakage and reservoir pollution and maintain wellbore …

Conventional heavy-weight oil and gas well cement systems formulated with barite exhibit
high viscosities. Additionally, the heavy-weight powder tends to settle, causing density …

Three hematite grades with different particle sizes (ie, large, medium, and small) were
evaluated, and the selection criterion was median particle size. The investigation involves …

Oil well cement segregation is one of the catastrophic issues in drilling operations. It
changes the properties of hardened cement, such as reducing its strength and increasing its …

The nuclear magnetic resonance (NMR), ultrasonic testing, and triaxial compression tests
were employed to investigate the deterioration laws of multiple physical and mechanical …