Challenges associated with drilling operations are numerous and their adverse effect could
lead to severe damage or even shutting down of the drilling operations. Wellbore instability …

The pressure infiltration behavior of bentonite slurry (a mixture of water and bentonite) in
front of a slurry tunnel boring machine (TBM) determines the effectiveness of tunnel face …

Earth pressure balance shield (EPBS) has become the mainstream construction method for
metro tunnels in China, which inevitably generates a large amount of discharged soil …

Oil-based drilling fluids are widely used in challenging wells such as those with large
displacements, deepwater and ultra-deepwater wells, deep wells, and ultra-deep wells due …

One of the significant problems of drilling with water-based muds in oil and gas wells is the
instability in the Shale Formations. Conventional additives cannot plug nanometer-sized …

Filtrate reducer is a drilling fluid additive that can effectively control the filtration loss of
drilling fluid to ensure the safe and efficient exploitation of oilfields. It is the most widely used …

The composite LAPONITE®-spherical metal oxides (L-SMO) gels were characterised and
compared with pure LAPONITE® gels in terms of rheology, microstructure, and time …

The quality of bentonite directly affects the safety and economic benefits of oil well drilling
engineering. Due to the fact that most of the qualified drilling-grade bentonite used in water …

Nanofibrous clay minerals, specifically palygorskite (Pal) and sepiolite (Sep), have been
becoming a new generation of rheological additives for drilling fluid systems due to their …

In civil engineering, bentonite-water mixtures, commonly referred to as drilling muds, are
intensively used in order to lubricate tools, consolidate walls, and help extracting cuttings …