Evaluation of a new alkaline/microbe/polymer flooding system for enhancing heavy oil recovery |
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| Authors: | Xiaotong Wang Xizhe Li Li Yu Jianlong Xiu Yang Li Qingfeng Cui |
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| Affiliation: | 1. Research Institute of Petroleum Exploration &2. Development, PetroChina Company Limited, Beijing, P. R. China;3. Research Institute of Petroleum Exploration &4. Development, PetroChina Company Limited, Langfang, P. R. China;5. Institute of Porous Flow and Fluid Mechanics, University of Chinese Academy of Sciences, Langfang, P. R. China |
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| Abstract: | The new alkaline/microbe/polymer (AMP) flooding system was first constructed and evaluated for enhancing oil recovery. The system is composed of 0.3?wt% Na2CO3, 2?wt% microbial cultures and 0.2?wt% polymer. Compared with the conventional alkaline/surfactant/polymer (ASP) system, the AMP system exhibits identical displacement properties. Chromatography analysis reveals crude oil is not negatively affected by the microbes in AMP system. Further comparative core flooding experiments using the AMP and ASP systems demonstrate that the AMP system possesses greater potential for enhancing heavy oil recovery, which shows the characteristic of two-stage additional oil increment with total additional oil recovery of 17.11%–19.91%. |
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| Keywords: | additional oil recovery (AOR) alkaline/microbe/polymer (AMP) flooding system core flooding experiment enhancing oil recovery heavy oil |
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