View in EDS HTML Full Text PDF Full Text

Comparative Evaluation of Polymer Screening and Oil Displacement Performance in Class III Reservoirs of the Daqing Oilfield.

Saved in:
Bibliographic Details
Title: Comparative Evaluation of Polymer Screening and Oil Displacement Performance in Class III Reservoirs of the Daqing Oilfield.
Authors: Yu, Ming1 (AUTHOR), He, Yunwei1,2 (AUTHOR), Jin, Xin1 (AUTHOR), Pei, Tong1,2 (AUTHOR), Wei, Jinyun2 (AUTHOR) wjylkl99@163.com, Li, Fushan2 (AUTHOR), Zhao, Shuaishuai2 (AUTHOR), Pi, Yanfu2 (AUTHOR)
Source: Polymers (20734360). Jan2026, Vol. 18 Issue 2, p147. 18p.
Subjects: Enhanced oil recovery, Polymer testing, Petroleum reservoirs, Permeability, Mechanical efficiency, Viscosity, Oil fields
Geographic Terms: Daqing (Heilongjiang Sheng, China)
Abstract: Class III reservoirs in the Daqing Oilfield are characterized by low permeability and strong heterogeneity, posing significant challenges to enhanced oil recovery (EOR). To improve the recovery efficiency of these reservoirs, the viscosifying ability, stability, shear resistance, and profile-control performance of fifteen polymer solutions were experimentally evaluated, and the two most compatible formulations were selected for the Daqing Class III reservoirs. Subsequently, a three-dimensional physical model equipped with real-time saturation monitoring was employed to compare the EOR performance of the selected polymers. The results indicate that a 1500 mg L−1 polymer solution with a molecular weight (Mw) of 16 × 106 Da and a 1200 mg L−1 polymer solution with an Mw of 19 × 106 Da exhibit the best compatibility with the target formation. After injecting the 1500 mg L−1 (Mw = 16 × 106 Da) polymer solution, the ultimate recovery reached 53.38%, with displacement efficiencies of 64.34% and 58.16% and sweep efficiencies of 92.26% and 80.35% in the high- and low-permeability layers, respectively. Injection of the 1200 mg L−1 (Mw = 19 × 106 Da) polymer solution yielded an overall recovery of 47.71%, corresponding to displacement efficiencies of 60.34% and 54.16% and sweep efficiencies of 88.52% and 76.38%. Consequently, the 1500 mg L−1 (Mw = 16 × 106 Da) polymer solution delivers the highest recovery increment in Class III reservoirs. These findings provide valuable guidance for the efficient polymer-flooding development of Class III reservoirs in Daqing and analogous formations worldwide. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: egs
DbLabel: Engineering Source
An: 191214554
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Comparative Evaluation of Polymer Screening and Oil Displacement Performance in Class III Reservoirs of the Daqing Oilfield.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Yu%2C+Ming%22">Yu, Ming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22He%2C+Yunwei%22">He, Yunwei</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jin%2C+Xin%22">Jin, Xin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pei%2C+Tong%22">Pei, Tong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Jinyun%22">Wei, Jinyun</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> wjylkl99@163.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Fushan%22">Li, Fushan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Shuaishuai%22">Zhao, Shuaishuai</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pi%2C+Yanfu%22">Pi, Yanfu</searchLink><relatesTo>2</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Jan2026, Vol. 18 Issue 2, p147. 18p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Enhanced+oil+recovery%22">Enhanced oil recovery</searchLink><br /><searchLink fieldCode="DE" term="%22Polymer+testing%22">Polymer testing</searchLink><br /><searchLink fieldCode="DE" term="%22Petroleum+reservoirs%22">Petroleum reservoirs</searchLink><br /><searchLink fieldCode="DE" term="%22Permeability%22">Permeability</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+efficiency%22">Mechanical efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Viscosity%22">Viscosity</searchLink><br /><searchLink fieldCode="DE" term="%22Oil+fields%22">Oil fields</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Daqing+%28Heilongjiang+Sheng%2C+China%29%22">Daqing (Heilongjiang Sheng, China)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Class III reservoirs in the Daqing Oilfield are characterized by low permeability and strong heterogeneity, posing significant challenges to enhanced oil recovery (EOR). To improve the recovery efficiency of these reservoirs, the viscosifying ability, stability, shear resistance, and profile-control performance of fifteen polymer solutions were experimentally evaluated, and the two most compatible formulations were selected for the Daqing Class III reservoirs. Subsequently, a three-dimensional physical model equipped with real-time saturation monitoring was employed to compare the EOR performance of the selected polymers. The results indicate that a 1500 mg L−1 polymer solution with a molecular weight (Mw) of 16 × 106 Da and a 1200 mg L−1 polymer solution with an Mw of 19 × 106 Da exhibit the best compatibility with the target formation. After injecting the 1500 mg L−1 (Mw = 16 × 106 Da) polymer solution, the ultimate recovery reached 53.38%, with displacement efficiencies of 64.34% and 58.16% and sweep efficiencies of 92.26% and 80.35% in the high- and low-permeability layers, respectively. Injection of the 1200 mg L−1 (Mw = 19 × 106 Da) polymer solution yielded an overall recovery of 47.71%, corresponding to displacement efficiencies of 60.34% and 54.16% and sweep efficiencies of 88.52% and 76.38%. Consequently, the 1500 mg L−1 (Mw = 16 × 106 Da) polymer solution delivers the highest recovery increment in Class III reservoirs. These findings provide valuable guidance for the efficient polymer-flooding development of Class III reservoirs in Daqing and analogous formations worldwide. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=191214554
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3390/polym18020147
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 18
        StartPage: 147
    Subjects:
      – SubjectFull: Enhanced oil recovery
        Type: general
      – SubjectFull: Polymer testing
        Type: general
      – SubjectFull: Petroleum reservoirs
        Type: general
      – SubjectFull: Permeability
        Type: general
      – SubjectFull: Mechanical efficiency
        Type: general
      – SubjectFull: Viscosity
        Type: general
      – SubjectFull: Oil fields
        Type: general
      – SubjectFull: Daqing (Heilongjiang Sheng, China)
        Type: general
    Titles:
      – TitleFull: Comparative Evaluation of Polymer Screening and Oil Displacement Performance in Class III Reservoirs of the Daqing Oilfield.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Yu, Ming
      – PersonEntity:
          Name:
            NameFull: He, Yunwei
      – PersonEntity:
          Name:
            NameFull: Jin, Xin
      – PersonEntity:
          Name:
            NameFull: Pei, Tong
      – PersonEntity:
          Name:
            NameFull: Wei, Jinyun
      – PersonEntity:
          Name:
            NameFull: Li, Fushan
      – PersonEntity:
          Name:
            NameFull: Zhao, Shuaishuai
      – PersonEntity:
          Name:
            NameFull: Pi, Yanfu
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 15
              M: 01
              Text: Jan2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 20734360
          Numbering:
            – Type: volume
              Value: 18
            – Type: issue
              Value: 2
          Titles:
            – TitleFull: Polymers (20734360)
              Type: main
ResultId 1