Review of Microgels for Enhanced Oil Recovery: Properties and Cases of Application

Ketova, Yulia A.; Burin, Denis A.; Galkin, Sergey; Yang, Hongbin

doi:10.3390/gels8020112

Cited by 16 publications

(14 citation statements)

References 107 publications

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“…The shear‐thinning and self‐healing properties make our hydrogels more useful in EOR. For example, the hydrogels can be applied to highly permeable fracture zones and block corresponding passways, therefore redirecting injected water flows to low‐permeable areas rich with oils 62,63 …”

Section: Resultsmentioning

confidence: 99%

An injectable self‐healing hydrogel based on poly(acrylamide‐co‐N‐vinylimidazole) and laponite clay nanosheets

Xiong

Fang

et al. 2022

J of Applied Polymer Sci

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Injectable self‐healing hydrogels have found broad applications in drug delivery, tissue engineering and controlled 3D cell culture. In this article, the coordination interaction between polymer‐bearing imidazole groups and Mg2+ ions “trapped” in Laponite, has been employed to develop an injectable self‐healing nanocomposite hydrogel. The properties and gelation mechanism of the hydrogel have been characterized and demonstrated by rheology, TEM, XRD, SEM, and NMR in particular. The hydrogel exhibits swift self‐healing performance without waiting for long time or elevated temperature. In particular, the present hydrogel can be applied in harsh alkaline environments, exhibiting a great advantage over traditional metal ion crosslinked hydrogels. The injectable self‐healing hydrogels based on the coordination interaction between Laponite and polymer have been rarely reported. Our research may make contributions not only to the design but also to the potential application of the hydrogels in a range of harsh alkaline environments, especially in enhanced oil recovery (EOR).

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Section: Resultsmentioning

confidence: 99%

An injectable self‐healing hydrogel based on poly(acrylamide‐co‐N‐vinylimidazole) and laponite clay nanosheets

Xiong

Fang

et al. 2022

J of Applied Polymer Sci

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“…The most widely used group includes injection of polymers and cross-linkers. These are partially hydrolyzed polyacrylamides (HPAA) [ 28 , 29 ] cross-linked by polyvalent anions that change valence under reservoir conditions, or organic cross-linkers having a low kinetic constant [ 24 ]. For some cases, biopolymers [ 30 ] or other types of polymers are recommended.…”

Section: Methodsmentioning

confidence: 99%

Injection of Gelling Systems to a Layered Reservoir for Conformance Improvement

Федоров

Shevelev

Gilmanov

et al. 2022

Gels

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The paper describes the introduction and estimation of performance criteria for the gelling agent injection technology based on a general approach to modeling physical and chemical enhanced oil recovery (EOR) methods. The current mathematical models do not include performance criteria for the process of gelling agent injection and do not allow for assessing the level of success of a treatment job in production wells. The paper introduces such criteria for the first time. To simulate the effect on injection wells, the mass conservation laws and the generalized flow law are used, and closing relations for the gelling rate are taken into account. A conformance control coefficient is introduced which characterizes the positive effect of well treatments and injectivity drop which characterizes the negative effect. The performance criteria allow for identifying the wells where the treatment jobs were the most successful. The model verification, based on the comparison of post-treatment injectivity estimated in the developed model, with Rosneft’s field data showed a satisfactory match. The developed correlations can be used as the basis for a surrogate model that allows for avoiding building sector geological and flow simulation models of the treated zone.

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“…The gels based on AM‐AMPS polymers are the most effective and with low cost. The cost of PAM is about 2.00–4.00 USD per kg 73.…”

Section: Gelling Systemsmentioning

confidence: 99%

Water Control with Gels Based on Synthetic Polymers under Extreme Conditions in Oil Wells

et al. 2022

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A bibliographic review of research works dealing with gels based on synthetic polymers and their application in water control under harsh conditions was compiled. The extreme conditions were defined to be above 100 °C with 100 000 ppm of total dissolved solids, including divalent ions. Works describing laboratory experiments and oilfield implementations were also considered. According to current literature, some gels based on synthetic polymers have displayed desirable properties for water control, but in many cases, research is still at laboratory level. Therefore, further studies are required to understand the mode of action and stability of gels and polymers submitted to hard conditions in order to produce high‐performance prototypes.

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Review of Microgels for Enhanced Oil Recovery: Properties and Cases of Application

Cited by 16 publications

References 107 publications

An injectable self‐healing hydrogel based on poly(acrylamide‐co‐N‐vinylimidazole) and laponite clay nanosheets

An injectable self‐healing hydrogel based on poly(acrylamide‐co‐N‐vinylimidazole) and laponite clay nanosheets

Injection of Gelling Systems to a Layered Reservoir for Conformance Improvement

Water Control with Gels Based on Synthetic Polymers under Extreme Conditions in Oil Wells

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