Yield stress fluid flows occur in a great many operations and unit processes within the oil
and gas industry. This paper reviews this usage within reservoir flows of heavy oil, drilling …

Viscoplasticity is characterized by a yield stress, below which the materials will not deform
and above which they will deform and flow according to different constitutive relations …

Recent years have seen a flurry of research on yield stress fluids, approached from different
perspectives (physicochemical, rheological and fluid mechanical), considering different …

Thin film flows, whether driven by gravity, surface tension, or the relaxation of elastic
boundaries, occur in many natural and industrial processes. Applications span problems of …

We study the injection flow of a heavy viscoplastic fluid into a light Newtonian fluid, via
modelling and experiments. The injection is carried out downward, via an eccentric inner …

Plug and abandonment (P&A) operations prevent oil and gas leakages from hydrocarbon
zones to different formations, freshwater underground resources, and the surface. Cement …

Exact solutions for laminar stratified flows of Newtonian/non-Newtonian shear-thinning fluids
in horizontal and inclined channels are presented. An iterative algorithm is proposed to …

We study buoyant displacement flows with two miscible fluids of equal viscosity in the
regime of low Atwood number and in ducts that are inclined close to horizontal. Using a …

We present results of a primarily experimental study of buoyant miscible displacement flows
of a yield stress fluid by a higher density Newtonian fluid along a long pipe, inclined at …

We report theoretical and numerical studies of the flow behaviour when a fluid is injected
into a confined porous medium saturated with another fluid of different density and viscosity …