Aspects of aqueous foam stability in the presence of hydrocarbon oils and solid particles

1994 ◽  
Vol 48 ◽  
pp. 93-120 ◽  
Author(s):  
R. Aveyard ◽  
B.P. Binks ◽  
P.D.I. Fletcher ◽  
T.G. Peck ◽  
C.E. Rutherford
Keyword(s):  
Foam Stability ◽  
Solid Particles ◽  
Aqueous Foam

Effect of starch particles on foam stability and dilational viscoelasticity of aqueous-foam

2015 ◽  
Vol 23 (1) ◽  
pp. 276-280 ◽  
Author(s):  
Yongqiang Zhang ◽  
Zhidong Chang ◽  
Wenli Luo ◽  
Shaonan Gu ◽  
Wenjun Li ◽  
...  
Keyword(s):  
Foam Stability ◽  
Aqueous Foam ◽  
Dilational Viscoelasticity

scholarly journals Profile Control Using Fly Ash Three-Phase Foam Assisted by Microspheres with an Adhesive Coating

2021 ◽  
Vol 11 (8) ◽  
pp. 3616
Author(s):  
Yulong Yang ◽  
Tingting Cheng ◽  
Zhenjiang You ◽  
Tuo Liang ◽  
Jirui Hou
Keyword(s):  
Fly Ash ◽  
High Temperatures ◽  
Oil Recovery ◽  
Foam Stability ◽  
Solid Particles ◽  
Sweep Efficiency ◽  
Steam Flooding ◽  
Three Phase ◽  
Profile Control ◽  
Adhesive Coating

Foam-assisted steam flooding is a promising technique to alleviate gas channeling and enhance sweep efficiency in heterogeneous heavy-oil reservoirs. However, long-term foam stabilization remains problematic at high temperatures. Three-phase foam (TPF), containing dispersed solid particles, has been proposed to improve foam stability under harsh reservoir conditions. We fabricated a novel TPF system by adding ultrafine fly ash particles, as well as high-temperature resistant microspheres with an adhesive coating layer. This work aims at assessing the ability of the generated TPF in controlling steam channeling and enhancing oil recovery. Static and core flood tests were performed to evaluate foam strength and stability. Our results suggested a stronger foamability at a lower consolidation agent concentration, while a longer half-life period of foam and settling time of solid particles at a larger consolidation agent concentration were observed. Bubbles suspended independently in the liquid phase, with sizes varying from 10 to 100 μm, smaller than that of the conventional foam, suggesting a significant enhancement of foam dispersity and stability. The plugging rate was close to 90% when the temperature was as high as 300 °C, demonstrating a well-accepted plugging effect under high temperatures. A larger pore volume injection of TPF yielded a higher EOR in parallel cores, which substantiated the effectiveness of the three-phase foam system in sealing high-permeability channels.

scholarly journals Preparation of foaming agents for dust suppression of coal particles

2019 ◽  
pp. 12-18
Author(s):  
Zh.B. Ospanova ◽  
S. Toktagul ◽  
A. Tasmagambetova ◽  
M. Asadov
Keyword(s):  
Surface Tension ◽  
Anionic Surfactants ◽  
Foam Stability ◽  
Sodium Dodecyl ◽  
Solid Particles ◽  
Foaming Agents ◽  
Coal Particles ◽  
Foaming Capacity ◽  
The Stability ◽  
Surface Tension Isotherms

The results of the study of foams stabilized by solid coal particles are given. The method of sedimentation analysis determined the most likely radius of coal particles equal to 20.28 microns. Foaming ability was determined by the height of the foam column obtained by the method of bubbling within 1 min. Foam stability was determined by the time of complete destruction of the foam column. Foams stabilized by the compositions of anionic surfactants – sodium dodecyl sulfate (DDSNa) and sulfonol (SF) with polyvinyl alcohol (PVA) in the presence of hydrophobic solid particles of coal showed greater foaming capacity and stability compared to foams from individual surfactants. The surface tension isotherms of aqueous solutions of surfactants, PVA, and their mixtures were obtained. An increase in the stability of foams in the presence of coal particles corresponds to a decrease in the surface tension at the liquid-gas interface. The stability of foams obtained from surfactant-PVA compositions is explained by the combined influence of thermodynamic (reduction of surface tension) and structural-mechanical (increase in viscosity of inter-membrane fluid) of stability factors. These properties of foams can be used to suppress dust in coal mining.

scholarly journals Stabilization of Silicone Dioxide Nanoparticle Foam in Tertiary Petroleum Production

2019 ◽  
Vol 19 (4) ◽  
pp. 985
Author(s):  
Mohd Zulkifli Bin Mohamad Noor ◽  
Wong Yi Teng ◽  
Sonny Irawan
Keyword(s):  
Oil Recovery ◽  
Foam Stability ◽  
Sio2 Nanoparticles ◽  
Mineral Oil ◽  
Industrial Applications ◽  
End User ◽  
Static State ◽  
Aqueous Foam ◽  
Enhance Oil Recovery ◽  
White Mineral

Nanoparticles have emerged with substantially to the end user and industrial applications. The applications initiated to enhance oil recovery (EOR) and also as alternative solution in increasing the rheological properties of fluids at difference condition. The study aims to evaluate the effects of various surfactant and nanoparticle concentration as well as hydrocarbons on foam stability. Series of static state experiments were conducted to investigate the foam development stability of five different concentrations for surfactant from 0.05 to 0.25 wt.% and nanoparticle from 0 to 1.00 wt.% in the presence of white mineral oil in synthetic brine suspension. By discussing to the Ross-Miles method - half-life capacities (t½), the foam stability of the aqueous foam was expected. Results suggested that the foam stability is increase with the present of nanoparticle. The 0.5 wt.% SiO2 nanoparticles enhanced foam formed the most lasting in the absence of white mineral oil as its t½ in presence of oil is 0.6 times smaller than in the absence of oil. It is concluded that the presence of nanoparticles for surfactant foam stability can be enhanced. The used of nanoparticles can be further study with different type of nanoparticles, only with small amount of nanoparticles used can further stabilize the foam.

Stability and Flow Properties of Oil-Based Foam Generated by CO2

SPE Journal ◽  
2019 ◽  
Vol 25 (01) ◽  
pp. 416-431 ◽  
Author(s):  
Songyan Li ◽  
Qun Wang ◽  
Zhaomin Li
Keyword(s):  
Porous Media ◽  
Oil Recovery ◽  
Foam Stability ◽  
Mobility Control ◽  
Flow In Porous Media ◽  
Recovery Efficiency ◽  
Oil Viscosity ◽  
Aqueous Foam ◽  
The Stability ◽  
Foam Flooding

Summary Foam flooding is an important method used to protect oil reservoirs and increase oil production. However, the research on foam fluid is generally focused on aqueous foam, and there are a few studies on the stability mechanism of oil-based foam. In this paper, a compound surfactant consisting of Span® 20 and a fluorochemical surfactant is determined as the formula for oil-based foam. The foam volume and half-life in the bulk phase are measured to be 275 mL and 302 seconds, respectively, at room temperature and atmospheric pressure. The stability mechanism of oil-based foam is proposed by testing the interfacial tension (IFT) and interfacial viscoelasticity. The lowest IFT of 18.5 mN/m and the maximum viscoelasticity modulus of 16.8 mN/m appear at the concentration of 1.0 wt%, resulting in the most-stable oil-based foam. The effect of oil viscosity and temperature on the properties of oil-based foam is studied. The foam stability increases first and then decreases with the rising oil viscosity, and the stability decreases with rising temperature. The apparent viscosity of oil-based foam satisfies the power-law non-Newtonian properties, and this viscosity is much higher than that of the phases of oil and CO2. The flow of oil-based foam in porous media is studied through microscopic-visualization experiments. Bubble division, bubble merging, and bubble deformation occur during oil-based-foam flow in porous media. The oil-recovery efficiency of the oil-based-foam flooding is 78.3%, while the oil-recovery efficiency of CO2 flooding is only 28.2%. The oil recovery is enhanced because oil-based foam reduces CO2 mobility, inhibits gas channeling, and improves sweep efficiency. The results are meaningful for CO2 mobility control and for the application of foam flooding for enhanced oil recovery (EOR).

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