Abstract
Polymer enhanced oil recovery (EOR) operation has been implemented for the production of oil from difficult mature oilfields in Oman. The polymer used in this EOR technique to sweep oil toward production wells is resulting in the generation of polymer flood produced water (PFPW) of increasing viscosity. Current methods of treating oilfield produced water must be reconsidered for the effective treatment of such PFPW of changing quality. In a previous study, the utilization of polyaluminum chloride (PAC) chemical was proposed for the coagulation of oil in produced water to be separated by flotation and filtration. As such, laboratory tests were conducted to evaluate the applicability of PAC and other chemicals for treatment of PFPW that has higher viscosity than ordinary oilfield produced water. These tests clearly indicated that aluminum sulfate (AS) chemical was more effective for treatment of such higher viscosity water. A pilot plant developed during the earlier study, was utilized to conduct coagulation/flocculation, flotation, filtration, and adsorption treatment trials for PFPW from an oilfield where polymer EOR is underway. For the final trial, the inlet PFPW viscosity was 1.4 cP at 40 °C and oil concentration was above 200 mg-L-1. AS was applied for coagulation/flocculation and flotation stages, and was found to be effective in reducing oil concentration to 1 mg-L-1. Filtration and adsorption stages resulted in further improvement of water quality. Most of the polymer used for EOR was believed to have been removed along with oil and suspended solids.
| Original language | English |
|---|---|
| Title of host publication | Society of Petroleum Engineers - 30th Abu Dhabi International Petroleum Exhibition and Conference, ADIPEC 2014: Challenges and Opportunities for the Next 30 Years |
| Publisher | Society of Petroleum Engineers |
| Pages | 3605-3623 |
| Number of pages | 19 |
| Volume | 5 |
| ISBN (Electronic) | 9781634398053 |
| Publication status | Published - 2014 |
| Event | 30th Abu Dhabi International Petroleum Exhibition and Conference: Challenges and Opportunities for the Next 30 Years, ADIPEC 2014 - Abu Dhabi, United Arab Emirates Duration: Nov 10 2014 → Nov 13 2014 |
Other
| Other | 30th Abu Dhabi International Petroleum Exhibition and Conference: Challenges and Opportunities for the Next 30 Years, ADIPEC 2014 |
|---|---|
| Country | United Arab Emirates |
| City | Abu Dhabi |
| Period | 11/10/14 → 11/13/14 |
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ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Geochemistry and Petrology
- Fuel Technology
Cite this
Polymer flood produced water treatment trials. / Al-Maamari, Rashid S.; Sueyoshi, Mark; Tasaki, Masaharu; Kojima, Keisuke; Okamura, Kazuo.
Society of Petroleum Engineers - 30th Abu Dhabi International Petroleum Exhibition and Conference, ADIPEC 2014: Challenges and Opportunities for the Next 30 Years. Vol. 5 Society of Petroleum Engineers, 2014. p. 3605-3623.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Polymer flood produced water treatment trials
AU - Al-Maamari, Rashid S.
AU - Sueyoshi, Mark
AU - Tasaki, Masaharu
AU - Kojima, Keisuke
AU - Okamura, Kazuo
PY - 2014
Y1 - 2014
N2 - Polymer enhanced oil recovery (EOR) operation has been implemented for the production of oil from difficult mature oilfields in Oman. The polymer used in this EOR technique to sweep oil toward production wells is resulting in the generation of polymer flood produced water (PFPW) of increasing viscosity. Current methods of treating oilfield produced water must be reconsidered for the effective treatment of such PFPW of changing quality. In a previous study, the utilization of polyaluminum chloride (PAC) chemical was proposed for the coagulation of oil in produced water to be separated by flotation and filtration. As such, laboratory tests were conducted to evaluate the applicability of PAC and other chemicals for treatment of PFPW that has higher viscosity than ordinary oilfield produced water. These tests clearly indicated that aluminum sulfate (AS) chemical was more effective for treatment of such higher viscosity water. A pilot plant developed during the earlier study, was utilized to conduct coagulation/flocculation, flotation, filtration, and adsorption treatment trials for PFPW from an oilfield where polymer EOR is underway. For the final trial, the inlet PFPW viscosity was 1.4 cP at 40 °C and oil concentration was above 200 mg-L-1. AS was applied for coagulation/flocculation and flotation stages, and was found to be effective in reducing oil concentration to 1 mg-L-1. Filtration and adsorption stages resulted in further improvement of water quality. Most of the polymer used for EOR was believed to have been removed along with oil and suspended solids.
AB - Polymer enhanced oil recovery (EOR) operation has been implemented for the production of oil from difficult mature oilfields in Oman. The polymer used in this EOR technique to sweep oil toward production wells is resulting in the generation of polymer flood produced water (PFPW) of increasing viscosity. Current methods of treating oilfield produced water must be reconsidered for the effective treatment of such PFPW of changing quality. In a previous study, the utilization of polyaluminum chloride (PAC) chemical was proposed for the coagulation of oil in produced water to be separated by flotation and filtration. As such, laboratory tests were conducted to evaluate the applicability of PAC and other chemicals for treatment of PFPW that has higher viscosity than ordinary oilfield produced water. These tests clearly indicated that aluminum sulfate (AS) chemical was more effective for treatment of such higher viscosity water. A pilot plant developed during the earlier study, was utilized to conduct coagulation/flocculation, flotation, filtration, and adsorption treatment trials for PFPW from an oilfield where polymer EOR is underway. For the final trial, the inlet PFPW viscosity was 1.4 cP at 40 °C and oil concentration was above 200 mg-L-1. AS was applied for coagulation/flocculation and flotation stages, and was found to be effective in reducing oil concentration to 1 mg-L-1. Filtration and adsorption stages resulted in further improvement of water quality. Most of the polymer used for EOR was believed to have been removed along with oil and suspended solids.
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UR - http://www.scopus.com/inward/citedby.url?scp=84994067469&partnerID=8YFLogxK
M3 - Conference contribution
VL - 5
SP - 3605
EP - 3623
BT - Society of Petroleum Engineers - 30th Abu Dhabi International Petroleum Exhibition and Conference, ADIPEC 2014: Challenges and Opportunities for the Next 30 Years
PB - Society of Petroleum Engineers
ER -