Experimental investigation and development of correlation for static and dynamic polymer adsorption in porous media

Al‐Hajri, Sameer; Mahmood, Syed Mohammad; Akbari, Saeed; Abdulelah, Hesham; Yekeen, Nurudeen; Saraih, Nabil

doi:10.1016/j.petrol.2019.106864

Cited by 23 publications

(10 citation statements)

References 35 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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“…It is generally understood that shear thinning is due to the more significant breakage/destruction of the entanglements between the polymer molecules at a higher shear rate. Consequently, a decrease occurs in the hydrodynamic size of the polymer, and there is thereby a reduction in polymer viscosity. , Nevertheless, it is possible that the addition of some nanoparticles can cause the polymer chains to physically adsorb on the nanoparticle surfaces. , Figure shows a comparison for the polymer rheology with and without silica nanoparticle solution. Overall, it is possible to say that polymers with higher molecular weights are more sensitive to shear, as the viscosity of the higher molecular weight decreased almost 10 times with shear.…”

Section: Resultsmentioning

confidence: 99%

“…Polymer adsorption in shale formations is unfavorable because the carrying capacity of the fracturing fluid will be decreased . Polymer adsorption depends on various factors, such as the polymer’s concentration and molecular weight, surface area, salinity, and temperature. − Moreover, polymer adsorption will be significantly affected by the shale rock mineralogy during hydraulic fracturing. However, the shale reservoir is highly heterogeneous, and mineralogy is variable.…”

Section: Introductionmentioning

confidence: 99%

Effect of Silica Nanoparticles on Polymer Adsorption Reduction on Marcellus Shale

et al. 2021

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Polymers play a major role in developing rheology of fracturing fluids for multistage hydraulic fracturing horizontal wells in unconventional reservoirs. Reducing the amount of polymer adsorbed in the shale formation is essential to maintain the polymer efficiency. In this study, the ability of silica nanoparticles to minimize polymer adsorption in Marcellus shale formation at reservoir temperature was investigated. Partially hydrolyzed polyacrylamide polymers of varying molecular weights (1–12 MD), salinities (2500–50,000 ppm), polymer concentrations (100–2000 ppm), and silica nanoparticle concentrations (0.01–0.1 w/w) were used in the static adsorption experiments. Adsorption of the polymer in the Marcellus shale samples was contrasted with and without the silica nanoparticles at a Marcellus formation reservoir temperature of 65 °C, showing a significant polymer adsorption reduction of up to 50%. The adsorption and adsorption reduction were more sensitive to the variation of the polymer concentration than to the variation of the salinity within the tested conditions. The highest adsorptions were reported at the higher molecular weight of 10–12 MD. In addition, silica nanoparticles significantly improved polymer rheology at elevated temperatures. The results indicate that nanoparticles can play a significant role in reducing polymer adsorption in the fracturing fluid and improve its rheological properties and its efficiency, which will reduce the number of issues caused by the polymers in the fracturing fluid and making it more cost effective.

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“…Polymer adsorption depends on various parameters such as polymer concentration and molecular weight, salinity, ionic strength, solid-to-liquid ratio, and temperature. , Moreover, higher polymer adsorption occurs if the interaction between the polymer and solvent is weak. It is significant to predict polymer adsorption in shale as polymer adsorption is generally irreversible .…”

Section: Polymers In Fracturing Fluidsmentioning

confidence: 99%

Perspective Review of Polymers as Additives in Water-Based Fracturing Fluids

et al. 2022

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After successful implementation for more than 6 decades by the oil and gas industry, hydraulic fracturing remains the pioneer well stimulation method to date. Polymers are one of the additives in fracturing fluids that play a significant role. Polymers are used as friction reducers and viscosifiers to provide a transport medium for proppants in fracturing fluids. There are many polymer-based fracturing fluid systems, but choosing the most appropriate type and system depends on the type of application and a wide range of parameters. Currently, there is no complete review study that gives a reference and hence a perspective for researchers on the use of polymers in hydraulic fracturing. This paper summarizes the published literature on polymers used in fracturing fluids and discusses the current research issues, efforts, and trends in the field, aiming to provide an overview of the polymer applications in slick-water and cross-linked gel systems. The mechanism and limitation of polymer use such as polymer degradation, fracture conductivity reduction, and polymer adsorption are also reviewed in this paper. The reviewed literature suggested that polymers are important additives in fracturing fluids not only to provide adequate transportation of proppants but also to determine the width of the fracture whereby higher viscosities yield wider fractures. The development of synthetic polymers and associative polymers in fracturing fluids showed a remarkable potential to improve the stability of fracturing fluids in unconventional reservoirs under reservoir conditions, which makes it an interesting topic for future studies.

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Experimental investigation and development of correlation for static and dynamic polymer adsorption in porous media

Cited by 23 publications

References 35 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

Effect of Silica Nanoparticles on Polymer Adsorption Reduction on Marcellus Shale

Perspective Review of Polymers as Additives in Water-Based Fracturing Fluids

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