Alkali-surfactant-polymer (ASP) flooding - potential and simulation for Alaskan North Slope reservoir
Master's Project (M.S.) University of Alaska Fairbanks, 2014 Enhanced oil recovery (EOR) is essential to recover bypassed oil and improve recovery factor. Alkaline-surfactant-polymer (ASP) flooding is a chemical EOR method that can be used to recover heavy oil containing organic acids from sand...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/8837 2023-05-15T13:09:12+02:00 Alkali-surfactant-polymer (ASP) flooding - potential and simulation for Alaskan North Slope reservoir Ghorpade, Tejas S. 2014-09 http://hdl.handle.net/11122/8837 en_US eng http://hdl.handle.net/11122/8837 Enhanced oil recovery Alaska North Slope Oil field flooding Oil field chemicals Master's Project ms 2014 ftunivalaska 2023-02-23T21:37:08Z Master's Project (M.S.) University of Alaska Fairbanks, 2014 Enhanced oil recovery (EOR) is essential to recover bypassed oil and improve recovery factor. Alkaline-surfactant-polymer (ASP) flooding is a chemical EOR method that can be used to recover heavy oil containing organic acids from sandstone formations. It involves injection of alkali to generate in situ surfactants, improve sweep efficiency, and reduce interfacial tension (IFT) between displacing and displaced phase, and injection of a polymer to improve mobility ratio; typically, it is followed by extended waterflooding. The concentration of alkali, surfactant, and polymer used in the process depends on oil type, salinity of solution, pressure, temperature of the reservoir, and injection water quality. This project evaluates the effect of waterflooding on recovery, calculates the recovery factor for ASP flooding, and optimum concentration of alkali, surfactant, and polymer for an Alaskan reservoir. Also, the effects of waterflooding and improvement with ASP flooding are evaluated and compared. Studies of these effects on oil recovery were analyzed with a Computer Modeling Group (CMG)-generated model for the Alaskan North Slope (ANS) reservoir. Based on a literature review and screening criteria, the Western North Slope (WNS) 1 reservoir was selected for the ASP process. A CMG - WinProp simulator was used to create a fluid model and regression was carried out with the help of actual field data. The CMG - WinProp model was prepared with a 5 spot well injection pattern using the CMG STARS simulator. Simulation runs conducted for primary and waterflooding processes showed that the recovery factor increased from 3% due to primary recovery to 45% due to waterflooding at 500 psi drawdown for 60 years with a constant producing gas oil ratio (GOR). ASP flooding was conducted to increase recovery further, and optimum ASP parameters were calculated for maximum recovery. Also, effect of alkali, surfactant and polymer on recovery was observed and compared with ... Other/Unknown Material Alaska North Slope north slope Alaska University of Alaska: ScholarWorks@UA Fairbanks Psi ENVELOPE(-63.000,-63.000,-64.300,-64.300) |
institution |
Open Polar |
collection |
University of Alaska: ScholarWorks@UA |
op_collection_id |
ftunivalaska |
language |
English |
topic |
Enhanced oil recovery Alaska North Slope Oil field flooding Oil field chemicals |
spellingShingle |
Enhanced oil recovery Alaska North Slope Oil field flooding Oil field chemicals Ghorpade, Tejas S. Alkali-surfactant-polymer (ASP) flooding - potential and simulation for Alaskan North Slope reservoir |
topic_facet |
Enhanced oil recovery Alaska North Slope Oil field flooding Oil field chemicals |
description |
Master's Project (M.S.) University of Alaska Fairbanks, 2014 Enhanced oil recovery (EOR) is essential to recover bypassed oil and improve recovery factor. Alkaline-surfactant-polymer (ASP) flooding is a chemical EOR method that can be used to recover heavy oil containing organic acids from sandstone formations. It involves injection of alkali to generate in situ surfactants, improve sweep efficiency, and reduce interfacial tension (IFT) between displacing and displaced phase, and injection of a polymer to improve mobility ratio; typically, it is followed by extended waterflooding. The concentration of alkali, surfactant, and polymer used in the process depends on oil type, salinity of solution, pressure, temperature of the reservoir, and injection water quality. This project evaluates the effect of waterflooding on recovery, calculates the recovery factor for ASP flooding, and optimum concentration of alkali, surfactant, and polymer for an Alaskan reservoir. Also, the effects of waterflooding and improvement with ASP flooding are evaluated and compared. Studies of these effects on oil recovery were analyzed with a Computer Modeling Group (CMG)-generated model for the Alaskan North Slope (ANS) reservoir. Based on a literature review and screening criteria, the Western North Slope (WNS) 1 reservoir was selected for the ASP process. A CMG - WinProp simulator was used to create a fluid model and regression was carried out with the help of actual field data. The CMG - WinProp model was prepared with a 5 spot well injection pattern using the CMG STARS simulator. Simulation runs conducted for primary and waterflooding processes showed that the recovery factor increased from 3% due to primary recovery to 45% due to waterflooding at 500 psi drawdown for 60 years with a constant producing gas oil ratio (GOR). ASP flooding was conducted to increase recovery further, and optimum ASP parameters were calculated for maximum recovery. Also, effect of alkali, surfactant and polymer on recovery was observed and compared with ... |
format |
Other/Unknown Material |
author |
Ghorpade, Tejas S. |
author_facet |
Ghorpade, Tejas S. |
author_sort |
Ghorpade, Tejas S. |
title |
Alkali-surfactant-polymer (ASP) flooding - potential and simulation for Alaskan North Slope reservoir |
title_short |
Alkali-surfactant-polymer (ASP) flooding - potential and simulation for Alaskan North Slope reservoir |
title_full |
Alkali-surfactant-polymer (ASP) flooding - potential and simulation for Alaskan North Slope reservoir |
title_fullStr |
Alkali-surfactant-polymer (ASP) flooding - potential and simulation for Alaskan North Slope reservoir |
title_full_unstemmed |
Alkali-surfactant-polymer (ASP) flooding - potential and simulation for Alaskan North Slope reservoir |
title_sort |
alkali-surfactant-polymer (asp) flooding - potential and simulation for alaskan north slope reservoir |
publishDate |
2014 |
url |
http://hdl.handle.net/11122/8837 |
long_lat |
ENVELOPE(-63.000,-63.000,-64.300,-64.300) |
geographic |
Fairbanks Psi |
geographic_facet |
Fairbanks Psi |
genre |
Alaska North Slope north slope Alaska |
genre_facet |
Alaska North Slope north slope Alaska |
op_relation |
http://hdl.handle.net/11122/8837 |
_version_ |
1766166777016877056 |