Experimental study of low molecular weight polymer/nanoparticle dispersed gel for water plugging in fractures

Bai, Yingrui; Shang, Xiaosen; Wang, Zengbao; Zhao, Xiutai

doi:10.1016/j.colsurfa.2018.04.067

Cited by 59 publications

(12 citation statements)

References 25 publications

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“…Meanwhile, values of fracture-matrix permeability for cores 1 and 2 dropped by 39.045 and 45.973 mD, respectively. The reduction in permeability occurs due to the plugging of the fracture by the polymer gel. , In highly permeable zones, a polymer solution can be injected and leads to greater flow resistance in such reservoirs. Therefore, this process can improve macroscopic sweep efficiency by helping the injected water to be diverted into poorly swept zones of low permeability. − Canbolata and Parlaktunab’s experimental study of the effect of polymer gel on oil recovery in fractured reservoirs showed that the permeability of fractured cores was reduced by the injection of polymer gel, hence increasing sweep efficiency .…”

Section: Results and Discussionmentioning

confidence: 99%

Application of Water-Soluble Polymer/Biopolymer Combined with a Biosurfactant in Oil-Wet Fractured Carbonate Reservoirs

et al. 2021

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Most fractured carbonate reservoirs are characterized by a highly permeable fracture zone surrounded by a low-permeability oil-wet matrix. These features make the displacement of oil from the matrix into the fracture zone almost impossible during water flooding. This paper presents the results of flooding with the polymer polyacrylamide (PAM) and the biopolymer xanthan gum (XG) in combination with a biosurfactant to enhance water imbibition into oil-wet fractured carbonate rocks. Core flooding experiments were conducted on induced horizontally fractured (at 180°) carbonate cores in room conditions (20 ± 2 °C). The polymer or biopolymer was used to plug the fracture zones, while the biosurfactant was added to the system to alter the wettability state of the rock matrix from oil-wet to water-wet. Rock surface characterization before and after core flooding was conducted using scanning electron microscopy (SEM). The results indicate that PAM flooding led to a higher reduction of 35.6% in fracturematrix permeability than that with XG at 18.3%. The monitoring of oil production also showed that ultimate oil recovery levels from oil-wet fractured carbonate cores for the aforementioned systems were 16 and 8.7%, respectively, which can be attributed to the drive mechanisms of temporary fracture plugging as well as mobility ratio improvement due to the polymer and wettability alteration by the biosurfactant. SEM images confirm the proposed mechanisms, where the presence of the polymer/biopolymer followed by the biosurfactant can be detected at the rock surface as a result of chemical flow through the system.

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Section: Results and Discussionmentioning

confidence: 99%

Application of Water-Soluble Polymer/Biopolymer Combined with a Biosurfactant in Oil-Wet Fractured Carbonate Reservoirs

et al. 2021

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“…As the tourmaline content increased, the viscosity of the electrospinning solution increased from 79.80 cP to 230.40 cP and the conductivity of the electrospinning solution increased from 4.67 mS cm À1 to 12.36 mS cm À1 , while the surface tension of the solution did not change signicantly. The increase in solution viscosity was attributed to the surface effect of TM NPs capable of adsorbing the polymer chain in the electrospinning solution, 26,27 which transmits its own excessive energy, hindering the movement of the segments to enhance the entanglement between the polymer segments. In addition, each of the tourmaline nanoparticles in the solution were equivalent to an electric dipole due to its spontaneous polarization effect, 28 which led to the increase in the conductivity of the whole solution.…”

Section: Resultsmentioning

confidence: 99%

Effect of tourmaline nanoparticles on the anticoagulation and cytotoxicity of poly(l-lactide-co-caprolactone) electrospun fibrous membranes

Zhao

Zhang

et al. 2019

RSC Adv.

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“…In recent years, with the reservoir conditions that implementing profile control and water shutoff are more and more complex, the requirements for profile control agents and water shutoff agents also become higher. For this reason, scholars have conducted many studies, among which polymer nanocomposite gel system can be effectively used as profile control and water shutoff in the high-temperature and high-salt reservoirs [148][149][150].…”

Section: Profile Control and Water Shutoffmentioning

confidence: 99%

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

Ke-jian

Tang

et al. 2020

Nanomaterials

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Graphene and its derivatives, with their unique two-dimensional structures and excellent physical and chemical properties, have been an international research hotspot both in the research community and industry. However, in application-oriented research in the oil and gas industry they have only drawn attention in the past several years. Their excellent optical, electrical, thermal and mechanical performance make them great candidates for use in oil and gas exploration, drilling, production, and transportation. Combined with the actual requirements for well working fluids, chemical enhanced oil recovery, heavy oil recovery, profile control and water shutoff, tracers, oily wastewater treatment, pipeline corrosion prevention treatment, and tools and apparatus, etc., this paper introduces the behavior in water and toxicity to organisms of graphene and its derivatives in detail, and comprehensively reviews the research progress of graphene materials in the upstream oil and gas industry. Based on this, suggestions were put forward for the future research. This work is useful to the in-depth mechanism research and application scope broadening research in the upstream oil and gas industry.

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Experimental study of low molecular weight polymer/nanoparticle dispersed gel for water plugging in fractures

Cited by 59 publications

References 25 publications

Application of Water-Soluble Polymer/Biopolymer Combined with a Biosurfactant in Oil-Wet Fractured Carbonate Reservoirs

Application of Water-Soluble Polymer/Biopolymer Combined with a Biosurfactant in Oil-Wet Fractured Carbonate Reservoirs

Effect of tourmaline nanoparticles on the anticoagulation and cytotoxicity of poly(l-lactide-co-caprolactone) electrospun fibrous membranes

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

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