Foam acidization has unique advantages such as low damage, filtration, friction, high efficiency, excellent retardation, and fast liquid discharge rate, which is suitable for stimulation reconstruction of low-pressure oil gas reservoirs that have been developed over many years. It obtained the main chemical components downhole plugging materials include vegetable oil, fatty acids their esters, ...

The annular foam breaker is one which uses the vacuum and shear force generated by the Coanda effect to break foam. The pressure distribution directly affects its performance. So an investigation on the flow characteristics inside the annular foam breaker is important to optimize its structure. In this paper, the computational fluid dynamics (CFD) code, FLUENT, is employed to simulate the flow ...

In this work, the theoretical study of steady flow for lift and drainage of Power law MHD fluid on a vertical cylinder is presented. The governing nonlinear differential equation has been derived from the momentum equation. The resulting equation is then solved using Perturbation method. Series solutions have been obtained for velocity, flow rate and average velocity in both cases. The graphica...

We analyze the geometric set-up of Lindquist’s “The Geometry of Primary Drainage” (J Colloid Interface Sci 296(2):655–668, 2006) and show that his main equation, which models the arc menisci configuration under primary drainage in capillary tube cross sections, can be solved analytically for the special case of a convex cross section and the wetting angle being assumed 0. Our approach relies on...

Foams are of great importance as a result their expansive presence in everyday life—they used the food, cosmetic, and process industries, detergency, oil recovery, firefighting. There is little understanding foam formation using soft porous media terms quality formation. Interaction foams with has recently been investigated study by Arjmandi-Tash et al., where three different regimes drainage c...

Foam flooding (or injection of foam) is a common technology to enhance oil recovery. Although the effects of permeability on foam flooding were well studied in many laboratory experiments, little research has been focused on the specificity of low permeability. In this paper, a series of constant-quality nitrogen foam flow experiments were conducted to investigate the effects of permeability on...

side weir is a flow control structure that used extensively in irrigation and drainage as well as sewer networks. throughout the present research, a study comprised of 162 experiments was done on sharp-crested semi-circular side weir. since the height in this side weir varies along its length, this feature enables it to more properly control flood than rectangular side weirs in various flood co...

Although nanoparticles (NPs) are known to increase foam stability, stabilisation is not observed in all surfactant/NP combinations. The present study evaluates the stability of CO2 foams containing mixtures with attractive or repulsive electrostatic interactions at low pH imposed by presence a high-salinity brine. Three ionic surfactants and two oxide NPs (SiO2 Al2O3) were used combinations sim...