Foam generation in homogeneous porous media

Author: vjmm

August undefined, 2024

WebAbstract: In steady gas–liquid flow in homogeneous porous media with surfactant present, there is often observed a critical injection velocity or pressure gradient ∇ p min at which “weak” or “coarse” foam is abruptly converted into “strong foam”, with a reduction of one to two orders of magnitude in total mobility: i.e., “foam generation”. WebSummary In most of transient foam core-flood studies, it is observed that multiple pore volumes of foam injection are needed before reaching the steady-state. The pore volumes needed appear to change with the degree of homogeneity of the porous media, orientation of the core, type of surfactant and the total injected flow rate. This is contrary to the foam …

Foaming Behavior of CO 2 -Soluble, Viscoelastic Surfactant

WebJun 15, 2024 · Although various studies have been accomplished on the topic of foam displacement in porous media, less attention has been paid to investigation of the impact of pertinent parameters such as water fractional flow, residual gas saturation, foam constant and gas viscosity on foam behavior. WebJan 9, 2024 · Coreflood Study of Effect of Surfactant Concentration on Foam Generation in Porous Media . 2024 Jan 9;58 (1):420-427. doi: 10.1021/acs.iecr.8b03141. Epub 2024 … dallas tx sheriff nas

Conditions for Foam Generation in Homogeneous Porous Media

WebMay 1, 2007 · Historically, the majority of the coreflood experiments for foams in porous media have been conducted at fixed u w and u g. Gauglitz et al. (2002) performed two other types of experiments to study foam generation in porous media: at “fixed ∇p and fixed f g ” and at “fixed ∇p and fixed u w ”. Their results, summarized by a three-dimensional (3D) … WebAug 1, 2009 · Abstract. Visual micromodels are a powerful tool for examining the mechanisms of oil recovery from porous media at the pore level. To this end, an algorithm has been developed to create two-dimensional flow network patterns simulating porous media with controlled properties. This has been used to manufacture flow micromodels … WebApr 11, 2016 · The results indicate once foam is generated in porous media, it is possible to maintain strong foam at low injection rates. This makes foam more feasible in field applications where foam generation is limited by high injection rates (or high pressure gradient) that may only exist near the injection well. bird academy golf

Percolation modeling of foam generation in porous media

Foam Generation in Porous Media Request PDF

WebFoam generation plays a crucial role in foam processes for improved oil recovery, acid diversion and environmental remediation. This study extends previous work to layered … WebSep 15, 2003 · Our conclusion is that foam modeling based on repeated Roof snap-off as a steady-state foam-generation mechanism in homogeneous porous media is called into question. There are mathematical models of foam generation in homogenous media that do not depend on Roof snap-off, but instead on lamella mobilization and division [14], … bird academy coupons cornell labWebIn such cases foam can be treated as a homogeneous, albeit complex, fluid. Foam is also used for two other purposes in oil and gas … dallas tx school system

"WebJul 2, 2013 · Foam generation was studied with both equilibrated and non-equilibrated fluids. Previously, we showed that CO2-foam stability and blocking ability were strongly reduced when mass transfer... " - Foam generation in homogeneous porous media

Foam generation in homogeneous porous media

Pore-level mechanics of foam generation and coalescence in the …

WebNumerical foam-type structures generation: Firstly, one generates a homogeneous porous medium in two steps (Figure 1): generating a random porous structure based on …

Did you know?

WebJul 1, 2024 · This paper reviews current simulation models for foam in porous media, and whether these models can represent a minimum superficial velocity, or minimum pressure gradient, for foam generation. In this study, we do not address the usefulness of these foam models for all applications. WebJan 9, 2024 · Coreflood Study of Effect of Surfactant Concentration on Foam Generation in Porous Media . 2024 Jan 9;58 (1):420-427. doi: 10.1021/acs.iecr.8b03141. Epub 2024 Nov 30. Authors G Yu 1 , W R Rossen 1 , S Vincent-Bonnieu 2 Affiliations 1 Delft University of Technology, Delft, 2628CN / 2600GA, Netherlands.

WebApr 1, 2002 · Foam production in homogenous porous media typically requires consistent gas and liquid co-injection with a low-pressure gradient [195] [196] [197] [198]. Surfactant … WebJul 16, 2015 · Foam in porous media exists as individual microgas bubbles in direct contact with the wetting fluid of the pore walls. ... The imparted resistance to fluid flow in porous media by a foam will be higher when the bubble size is relatively homogeneous. ... Foam Generation in Porous Media. Presented at the SPE/DOE Improved Oil Recovery …

WebArtificial silicate-type core samples based on consolidated quartz sand were used in the experiments as homogeneous porous media. The dimensions of the artificial core samples were 5 cm in length and 3 cm in diameter. ... was used as a reference surfactant. Immediately after the foam generation, the liquid starts to drain from lamellas as a ... WebApr 28, 2024 · Foam injection performance in porous media depends on several factors including foam texture, media characteristics, injection scenarios, etc. Several attempts were performed in the literature to investigate foam …

WebOct 1, 2002 · In steady gas–liquid flow in homogeneous porous media with surfactant present, there is often observed a critical injection velocity or pressure gradient ∇pmin at …

WebDec 17, 2024 · By linking foam propagation to the minimum superficial velocity u t min (or minimum pressure gradient ∇P min) required for foam generation in homogeneous porous media (Rossen and Gauglitz 1990; Gauglitz et al. 2002), the study reveals that the minimum velocity for maintaining the propagation of foam is far less than that for … dallas tx shooting cell phoneWebIn steady gas-liquid flow, foam is generated in homogeneous porous media by exceeding a critical pressure gradient, which normally only happens near the wellbore. Away from wells, these requirements may not be met, and foam propagation is uncertain. dallas tx sheriff deptWebThe stability of foam in porous media is extremely important for realizing the advantages of foamed gas on gas mobility reduction. Foam texture (i.e., bubbles per volume of gas) achieved is dictated by foam generation and coalescence processes occurring at the pore-level. For foam injection to be widely applied during gas injection projects, we need to … bird academy wallpaperWebNumerical foam-type structures generation: Firstly, one generates a homogeneous porous medium in two steps (Figure 1): generating a random porous structure based on correlated Gaussian random fields with a correlation length of 10%, a standard deviation of 1%, an expectation of 0 and 250 eigenmodes retained (a) and controlling its morphology … bird accessories.comWebFoam Generation in Homogeneous Porous Media Abstract In steady gas-liquid flow in homogeneous porous media with surfactant present, there is often observed a … dallas tx seafood restaurantsWebApr 28, 2024 · Foam injection performance in porous media depends on several factors including foam texture, media characteristics, injection scenarios, etc. Several attempts … dallas tx shooting this weekendWebApr 13, 2002 · The generation of strong foam in homogeneous porous media has been reported to be a function of flow rate, pressure drop, permeability, and system length. This study seeks to explain foam generation in terms of dimensionless groups and establish the criteria for foam generation based on the mobilization of stationary foam lamellae. dallas tx tax office