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ISSN 2063-5346
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Effectiveness of recovering heavy oil by thermal and chemical processes from inside a petroleum reservoir

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Aiham Omar Altayeh
» doi: 10.48047/ecb/2023.12.si4.1188

Abstract

Sand pack technique indicates the recovery factor of heavy oil through hot water and CTAB flooding. Hot water flooding at 90 ˚C of 1.5 pore volumes gave 11.69 % compared to other temperatures of hot water. CTAB flooding of 1.5 pore volumes represent the optimized conditions for the better heavy oil recovery of 13.08 %. The hot water flooding followed by CTAB flooding has a recovery factor of 14.10 % than the individual hot water flooding and CTAB flooding respectively. From the sand pack column, it is concluded that the recovery of heavy oil was 4.10 % over the industrial recovery practices in middle east. CTAB surfactant used in the research work proved to be better when compared to other surfactants in 139 terms of developing emulsion with smallest possible concentration, salinity stability, temperature stability and heavy oil recovery. The recovery of heavy oil was investigated in core flooding operation using hot water and CTAB flooding. Recovery of heavy oil using hot water followed by CTAB flooding was 11.17 % higher than the individual hot water flooding of 7.89 % and individual CTAB flooding of 9.63 %. Hot water followed by CTAB flooding recovered higher quantity of heavy oil in sank pack column as well as core flooding operations. Core flooding operation implemented sandstone core sample which has low permeability and porosity than unconsolidated sand which made the recovery of heavy oil is lower in the core flooding technique. Techno-economic analyses for heavy oil recovery in different situations were calculated and found to be viable. The research work was carried out with heavy oil and reservoir sample in the laboratory scale proved to be extremely effective and the techniques have to be further tested in the heavy oil fields.

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