Examinations of effective coagulant for polymer flood produced water and pilot trial in Oman

Keisuke Kojima, Masaharu Tasaki, Kazuo Okamura, Mark Sueyoshi, Rashid S. Al-Maamari

Research output: Contribution to journalArticle

Abstract

Polymer flooding is being used as an enhanced oil recovery (EOR) method in Oman. In polymer flooding, injection water of increased viscosity reduces mobility difference between water and oil, thereby improving sweep and oil recovery. The quality of polymer flood produced water (PFPW) is different from produced water (PW) without polymer, and various techniques are being studied for the effective treatment of PFPW. In this paper, the effects of two different coagulants, aluminum sulfate (AS) and polyaluminum chloride (PAC), were examined for the treatment of PFPW. Laboratory tests indicated that the effects of coagulation by PAC were decreased when used for PFPW, compared to PW. This decrease was attributable to interaction of polymer and inorganic carbon, rather than to high pH or high alkalinity alone. On the other hand, laboratory tests indicated that AS would be an effective alternative coagulant for PFPW treatment. Based on these results, a treatment trial with actual PFPW, was conducted with a pilot plant. The pilot trials confirmed that with appropriate level of AS addition and a second coagulation step, PFPW could be effectively treated with AS.

Original languageEnglish
Pages (from-to)276-286
Number of pages11
JournalJournal of the Japan Petroleum Institute
Volume57
Issue number6
DOIs
Publication statusPublished - 2014

Fingerprint

Polymers
Aluminum
Coagulation
Produced Water
Recovery
Water injection
Alkalinity
Pilot plants
Water treatment
Viscosity
Carbon
Sulfates
Oils
Water

Keywords

  • Aluminum sulfate
  • Coagulation
  • Enhanced oil recovery
  • Polyaluminum chloride
  • Polymer flood
  • Produced water

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Examinations of effective coagulant for polymer flood produced water and pilot trial in Oman. / Kojima, Keisuke; Tasaki, Masaharu; Okamura, Kazuo; Sueyoshi, Mark; Al-Maamari, Rashid S.

In: Journal of the Japan Petroleum Institute, Vol. 57, No. 6, 2014, p. 276-286.

Research output: Contribution to journalArticle

Kojima, Keisuke ; Tasaki, Masaharu ; Okamura, Kazuo ; Sueyoshi, Mark ; Al-Maamari, Rashid S. / Examinations of effective coagulant for polymer flood produced water and pilot trial in Oman. In: Journal of the Japan Petroleum Institute. 2014 ; Vol. 57, No. 6. pp. 276-286.
@article{891f5f5b74eb4dec9027f22a8d60e12e,
title = "Examinations of effective coagulant for polymer flood produced water and pilot trial in Oman",
abstract = "Polymer flooding is being used as an enhanced oil recovery (EOR) method in Oman. In polymer flooding, injection water of increased viscosity reduces mobility difference between water and oil, thereby improving sweep and oil recovery. The quality of polymer flood produced water (PFPW) is different from produced water (PW) without polymer, and various techniques are being studied for the effective treatment of PFPW. In this paper, the effects of two different coagulants, aluminum sulfate (AS) and polyaluminum chloride (PAC), were examined for the treatment of PFPW. Laboratory tests indicated that the effects of coagulation by PAC were decreased when used for PFPW, compared to PW. This decrease was attributable to interaction of polymer and inorganic carbon, rather than to high pH or high alkalinity alone. On the other hand, laboratory tests indicated that AS would be an effective alternative coagulant for PFPW treatment. Based on these results, a treatment trial with actual PFPW, was conducted with a pilot plant. The pilot trials confirmed that with appropriate level of AS addition and a second coagulation step, PFPW could be effectively treated with AS.",
keywords = "Aluminum sulfate, Coagulation, Enhanced oil recovery, Polyaluminum chloride, Polymer flood, Produced water",
author = "Keisuke Kojima and Masaharu Tasaki and Kazuo Okamura and Mark Sueyoshi and Al-Maamari, {Rashid S.}",
year = "2014",
doi = "10.1627/jpi.57.276",
language = "English",
volume = "57",
pages = "276--286",
journal = "Journal of the Japan Petroleum Institute",
issn = "1346-8804",
publisher = "Japan Petroleum Institute",
number = "6",

}

TY - JOUR

T1 - Examinations of effective coagulant for polymer flood produced water and pilot trial in Oman

AU - Kojima, Keisuke

AU - Tasaki, Masaharu

AU - Okamura, Kazuo

AU - Sueyoshi, Mark

AU - Al-Maamari, Rashid S.

PY - 2014

Y1 - 2014

N2 - Polymer flooding is being used as an enhanced oil recovery (EOR) method in Oman. In polymer flooding, injection water of increased viscosity reduces mobility difference between water and oil, thereby improving sweep and oil recovery. The quality of polymer flood produced water (PFPW) is different from produced water (PW) without polymer, and various techniques are being studied for the effective treatment of PFPW. In this paper, the effects of two different coagulants, aluminum sulfate (AS) and polyaluminum chloride (PAC), were examined for the treatment of PFPW. Laboratory tests indicated that the effects of coagulation by PAC were decreased when used for PFPW, compared to PW. This decrease was attributable to interaction of polymer and inorganic carbon, rather than to high pH or high alkalinity alone. On the other hand, laboratory tests indicated that AS would be an effective alternative coagulant for PFPW treatment. Based on these results, a treatment trial with actual PFPW, was conducted with a pilot plant. The pilot trials confirmed that with appropriate level of AS addition and a second coagulation step, PFPW could be effectively treated with AS.

AB - Polymer flooding is being used as an enhanced oil recovery (EOR) method in Oman. In polymer flooding, injection water of increased viscosity reduces mobility difference between water and oil, thereby improving sweep and oil recovery. The quality of polymer flood produced water (PFPW) is different from produced water (PW) without polymer, and various techniques are being studied for the effective treatment of PFPW. In this paper, the effects of two different coagulants, aluminum sulfate (AS) and polyaluminum chloride (PAC), were examined for the treatment of PFPW. Laboratory tests indicated that the effects of coagulation by PAC were decreased when used for PFPW, compared to PW. This decrease was attributable to interaction of polymer and inorganic carbon, rather than to high pH or high alkalinity alone. On the other hand, laboratory tests indicated that AS would be an effective alternative coagulant for PFPW treatment. Based on these results, a treatment trial with actual PFPW, was conducted with a pilot plant. The pilot trials confirmed that with appropriate level of AS addition and a second coagulation step, PFPW could be effectively treated with AS.

KW - Aluminum sulfate

KW - Coagulation

KW - Enhanced oil recovery

KW - Polyaluminum chloride

KW - Polymer flood

KW - Produced water

UR - http://www.scopus.com/inward/record.url?scp=84920377164&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84920377164&partnerID=8YFLogxK

U2 - 10.1627/jpi.57.276

DO - 10.1627/jpi.57.276

M3 - Article

VL - 57

SP - 276

EP - 286

JO - Journal of the Japan Petroleum Institute

JF - Journal of the Japan Petroleum Institute

SN - 1346-8804

IS - 6

ER -