Study of deep profile control and oil displacement technologies with nanoscale polymer microspheres

Hua, Zhao; Lin, Meiqin; Dong, Zhaoxia; Li, Mingyuan; Zhang, Guiqing; Yang, Jie

doi:10.1016/j.jcis.2014.03.019

Cited by 109 publications

(62 citation statements)

References 5 publications

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“…The sand packed tube displacement experiments were carried out as described by Lin et al . and Hua et al . The experiments were carried out at ∼60 °C and the flow was 2.0 mL/min when the water‐ and microsphere‐flooding occurred, respectively.…”

Section: Methodsmentioning

confidence: 99%

Preparation of poly(acrylamide‐co‐acrylic acid)/silica nanocomposite microspheres and their performance as a plugging material for deep profile control

Zeng

Yue

et al. 2017

J of Applied Polymer Sci

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In this work, poly(acrylamide‐co‐acrylic acid)/silica [poly(AM‐co‐AA)/SiO2] microspheres were prepared by inverse phase suspension polymerization in the presence of γ‐3‐(trimethoxysilyl) propyl methacrylate (or 3‐methacryloxypropyltrimethoxysilane) modified SiO2. The effects of SiO2 nanoparticles on tuning morphology and properties of the nanocomposite microspheres were studied. Plugging ability and oil displacement performance were also systematically investigated by single‐ and double‐tube sand pack models. The results showed that SiO2 nanoparticles can effectively adjust surface smoothness, swelling behavior, and thermal stability of the nanocomposite microspheres. Compared with pure copolymer microspheres, these nanocomposite microspheres also displayed better salt tolerance and shear resistance. Such multifunctional nanocomposite microspheres can provide effective plugging in the high‐permeability channels and can also achieve deep profile control. The highest plugging rate can be 86.11% and the oil recovery for low‐permeability tube was enhanced by 19.69%. This research will provide a candidate material for the further enhanced oil recovery (EOR) research and supply the theoretical support for profile control system in field application. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45502.

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Section: Methodsmentioning

confidence: 99%

Preparation of poly(acrylamide‐co‐acrylic acid)/silica nanocomposite microspheres and their performance as a plugging material for deep profile control

Zeng

Yue

et al. 2017

J of Applied Polymer Sci

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“…Firstly, flooding out the oil until the water content exceeded 98%, then 1/2 PV (injected pore volume ratio) ANSP-1 solution was injected, flooding to stop at 98% water content [11].…”

Section: Simulated Oil Displacement Experimentsmentioning

confidence: 99%

Laboratory Evaluation and Field Application of a Type of Surface–Active Polymer Oil Displacement Agent

Wei¹,

Li²,

Wang³

et al. 2014

TOPEJ

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Aiming to obtain a type of oil displacement with both surface activity and polymer performances, this paper, basing on mixing initiators at low temperatures, proposed a type of anion-nonionic surface-active polymer oil displacement agent (ANSP-1) by introducing polymerizable anion-nonionic surfmer (ANS-1), acrylamide (AM) and acrylic acid (AA). Structure of ANSP-1 was measured by FTIR. Laboratory studies show that: ANS-1 graft copolymerization occurs with AM, it avoids chromatographic separation, and it has better performances on molecular properties, such as tackifying performance, salt resistance, shear resistance and thermal stability. Oil-water interfacial tension can reach 1×10 -1 mN/m. Field application shows that average recovery ratio of the test wells which used ANSP-1 is 11%, which is 6.2% higher than the whole area.

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“…Polymer microspheres are a type of microgels and swell after absorbing water, giving rise to bridging-off and a sealing effect on the pore throat. And its elastic deformation caused in the pore throat contributes to in-depth fluid diversion when the injection pressure exceeds the breakthrough pressure [6,7].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Hydrophobic-Associated Microspheres for Deep Profile Control in Offshore Oilfields

Jin

et al. 2018

International Journal of Polymer Science

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Microspheres have excellent sealing performances such as injectivity, bridging-off, deep migration, and deformation performances, but their plugging effects are limited by the fast swelling rate and poor viscoelasticity. In this study, we synthesized a novel modified microsphere with polymerizable surfactant monomers and cationic monomers. We investigated the influence factors on the swelling performance and rheological properties of the microspheres and explored the ways to improve the plugging performance of hydrophobic-associating microspheres. The association behaviors in aqueous media of poly(acrylamide-comethacry loyloxyethyl trimethyl ammonium chloride-co-n-dodecyl poly(etheroxy acrylate) P(AM-DMC-DEA) are proven to be mediated by the DEA content. Moreover, the hydrophobic association interaction has a strong effect on the performance of microspheres such as swelling properties, the rheological performance, and plugging properties. The swelling properties of microsphere studies exhibited the slow swelling rate. The rheological performance measurements showed significant improvements; yield stress, and creep compliance increased rapidly from 404 to 2060 Pa and 3.89 × 10 −4 to 1.41 × 10 −2 1/Pa, respectively, with DEA content in microspheres rising from 0.0% to 0.22%. The plugging properties of microspheres were enhanced by the slow swelling performance and good viscoelasticity.

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Study of deep profile control and oil displacement technologies with nanoscale polymer microspheres

Cited by 109 publications

References 5 publications

Preparation of poly(acrylamide‐co‐acrylic acid)/silica nanocomposite microspheres and their performance as a plugging material for deep profile control

Preparation of poly(acrylamide‐co‐acrylic acid)/silica nanocomposite microspheres and their performance as a plugging material for deep profile control

Laboratory Evaluation and Field Application of a Type of Surface–Active Polymer Oil Displacement Agent

Preparation and Characterization of Hydrophobic-Associated Microspheres for Deep Profile Control in Offshore Oilfields

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