Adsorption and retention behaviors of heterogeneous combination flooding system composed of dispersed particle gel and surfactant

Li, Weitao; Dai, Caili; Ouyang, Jian; Aziz, Hafiz Aji; Tao, Jiaping; He, Xiaojuan; Zhao, Guang

doi:10.1016/j.colsurfa.2017.11.008

Cited by 27 publications

(12 citation statements)

References 31 publications

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“…There are two main methods for the study of polymer solution adsorption: static and dynamic adsorption [ 10 , 11 , 12 , 13 ]. The determination of dynamic adsorption is based on the total amount of adsorption and retention, not on a single adsorption variable [ 14 , 15 , 16 , 17 ]. Although some static adsorption methods are unrelated to the actual adsorption state, they are easier to conduct and explain [ 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Characteristics of Polymer Solutions on Media Surfaces and Their Main Influencing Factors

Zhu

Liu

et al. 2021

Polymers

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In practical applications, the chemical and physical adsorption of a polymer solution greatly affects its action mode and effect. Understanding the adsorption mechanism and its influencing factors can help to optimize the application mode and ensure application efficiency. Three types of polymer solutions—partially hydrolyzed polyacrylamide (HPAM), hydrophobically associating polymer (AP-P4), and dendrimer hydrophobically associating polymer (DHAP), which are viscoelastic liquids—were used as sorbates to study their adsorption by a sorbent such as quartz sand. The effects of the solution concentration, contact time, particle size of quartz sand, solid–liquid ratio, and fluid movement on the adsorption capacity of the polymer solutions were examined. The results showed that HPAM presents a typical Langmuir monolayer adsorption characteristic, and its adsorption capacity (per unit area) is 1.17–1.62 μg/cm2. The association enhances the interactions of the AP-P4 and DHAP solutions, and they present multilayer characteristics of first-order chemical adsorption and secondary physical molecule adsorption. Moreover, the dendrite structure further increases the adsorption thickness of DHAP. Hence, the adsorption thicknesses of AP-P4 and DHAP are four and six times that of HPAM, respectively. The adsorption of the three polymers is consistent with the influence of fluid motion and decreases with increasing fluid velocity. However, the larger the thickness of the adsorption layer, the clearer the influence of the flow, and the higher the decrease in adsorption capacity. Optimizing the injection rate is an effective method to control the applications of a polymer in porous media.

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Section: Introductionmentioning

confidence: 99%

Adsorption Characteristics of Polymer Solutions on Media Surfaces and Their Main Influencing Factors

Zhu

Liu

et al. 2021

Polymers

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“…When NP concentration reached 0.7%, the dilatational surface elasticity could reach up to 4 times as large as that of surfactant solutions without NPs. Surfactant adsorption was a dynamic process where adsorption and desorption are present simultaneously, and surfactant molecules adsorbed at the CO 2 -water interface easily underwent desorption from the interface due to external disturbance (Li et al, 2017). In comparison to HHSB molecules, NPs were adsorbed more strongly at the CO 2 -water interface, thus it was difficult for them to be desorbed from the interface.…”

Section: Resultsmentioning

confidence: 99%

A Novel Supercritical CO2 Foam System Stabilized With a Mixture of Zwitterionic Surfactant and Silica Nanoparticles for Enhanced Oil Recovery

Fang

Xiong

et al. 2019

Front. Chem.

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In order to improve the CO2 foam stability at high temperature and salinity, hydrophilic silica nanoparticles (NPs) were added into a dilute zwitterionic surfactant solution to stabilize supercritical CO2 (SC-CO2) foam. In the present paper, the foaming capacity and stability of SC-CO2 foam were investigated as a function of NP concentration at elevated temperatures and pressures. It was observed that the drainage rate of SC-CO2 foam was initially fast and then became slower with NPs adsorption at the gas-liquid interface. The improved foam stability at high temperature was attributed to the enhanced disjoining pressure with addition of NPs. Furthermore, an obvious increase in the foam stability was noticed with the increasing salinity due to the screening of NP charges at the interface. The rheological characteristics including apparent viscosity and surface elasticity, resistance factor, and microstructures of SC-CO2 foam were also analyzed at high temperature and pressure. With addition of 0.7% NPs, SC-CO2 foam was stabilized with apparent viscosity increased up to 80 mPa·s and resistance factor up to 200. Based on the stochastic bubble population (SBP) model, the resistance factor of SC-CO2 foam was simulated by considering the foam generation rate and maximum bubble density. The microstructural characteristics of SC-CO2 foam were detected by optical microscopy. It was found that the effluent bubble size ranged between 20 and 30 μm and the coalescence rate of SC-CO2 foam became slow with the increasing NP concentration. Oscillation measurements revealed that the NPs enhanced surface elasticity between CO2 and foam agents for resisting external disturbances, thus resulting in enhanced film stability and excellent rheological properties.

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“…Static adsorption [29][30][31]: The immersion method of polymer was mainly studied using the immersion method. A ratio of polymer to sand of 10 : 1 was immersed for 24 h. The supernatant was separated by centrifugation, and the absorbance of polymer in solution was determined.…”

Section: Static Adsorption Measurementmentioning

confidence: 99%

The seepage flow characteristics of hydrophobically associated polymers with different aggregation behaviours in porous media

Shi

Zhu

et al. 2020

R. Soc. open sci.

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The polymer solution for oil displacement is subjected to strong shear action in practical application, and this action will affect its percolation characteristics in porous media. The effects of mechanical shearing on the solution properties and seepage characteristics of modified hydrophobically associated polymers and dendrimers with two different aggregation behaviours were studied. The results showed that mechanical shearing did not affect hydrophobic microzones. Polymers can re-associate to restore part of the network structure, thereby improving shear resistance (dendritic hydrophobically associating polymers > hydrophobically modified partially hydrolysed polyacrylamide). Polymers with ‘cluster’ aggregation behaviour enhanced solution performance, enabling them to establish higher resistance coefficient (RF) and residual resistance factor (RRF) in porous media but also bringing about injection difficulties. Increasing the injection rate would increase the injection pressure, but the established RF and RRF showed a downward trend. Mechanical shear pretreatment effectively improved the injectability of the polymer. To achieve polymer injection and flow control, pre-shearing polymer solution and low-speed injection can be used in field applications.

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Adsorption and retention behaviors of heterogeneous combination flooding system composed of dispersed particle gel and surfactant

Cited by 27 publications

References 31 publications

Adsorption Characteristics of Polymer Solutions on Media Surfaces and Their Main Influencing Factors

Adsorption Characteristics of Polymer Solutions on Media Surfaces and Their Main Influencing Factors

A Novel Supercritical CO2 Foam System Stabilized With a Mixture of Zwitterionic Surfactant and Silica Nanoparticles for Enhanced Oil Recovery

The seepage flow characteristics of hydrophobically associated polymers with different aggregation behaviours in porous media

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