A new staged acid corrosion inhibition (ACI) concept, utilising polymerisable ACIs, has been developed to minimise the of coiled tubing and wellbore casing materials during matrix acidizing operations. The concept evaluated using a customised once-through flow cell 4 molar hydrochloric at 80 °C. high quality, protective inhibitor film is established an elevated ACI concentration test period 0–1...

amniotic fluid volume (afv) is one of the important parameters in the assessment of fetal well-being. the ability of ultrasound measurements to represent the actual afv is unproven. this study was undertaken to compare correlation of conventional amniotic fluid index (afi) and radial amniotic fluid index (rafi) as a new method with actual fluid volume on phantom. as an experimental study, 10 to...

water soluble amphoteric graft copolymers of polysaccharide were synthesized via grafting of cationic monomer onto the sodium carboxymethylcellulose ()cmc)( and then used as a shale stabilizer in the water-based drilling fluids. accordingly, five types of cmc-graft copolymers with different ratios of acrylamide am)( and diallyldimethylammonium chloride dadmac)( were synthesized. grafting of mon...

Filtration index of the drilling fluid is an important parameter of well drilling, especially at drilling-in the reservoirs. Standard parameter in the study of drilling fluids is static filtration index. At the same time, it is more feasible to determine dynamic filtration index, if considering actual conditions of the well. Use of polymer carbonate-weighted drilling fluids is advisable at dril...

We prove probabilistic well-posedness for a 2D viscous nonlinear wave equation modeling fluid–structure interaction between 3D incompressible, Stokes flow and elastodynamics of stretched membrane. The focus is on (rough) data, often arising in real-life problems, which it known that the deterministic problem ill-posed. show random perturbations such data give rise almost surely to existence uni...

In this paper, a numerical study is conducted in order to compare hyperbolic range of equations of isotherm two-fluid model governing on two-phase flow inside of pipe using conservative Shock capturing method. Differential equations of the two-fluid model are presented in two forms (i.e. form I and form II). In forms I and II, pressure correction terms are hydrodynamic and hydrostatic, respecti...