Numerical simulation of an oil viscosity reduction microbe for enhanced oil recovery

E. O. Ansah, Y. Sugai, K. Sasaki

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

This research model Microbial Enhanced Oil Recovery (MEOR) using two known simulators: UTCHEM and PHREEQC. We elucidate of environmental conditions effect on MEOR process by using real experimental data of an oil-degrading bacteria. Our work differs from previous research in that, we model MEOR operations with emphasis on oil viscosity reduction. Also, we elaborate on the geochemical reactions involved with nutrient/brine injection into oil reservoirs prior to and during microbial. PHREEQC was used to simulate the hydrochemistry reactions between the synthetic formation brine and the pulsating nutrient (yeast extract – nitrogen source)/brine solution in the absence of microbe. Hitherto, we modelled the enhancement of oil viscosity by assuming production of gases and by the direct action of the microbe on heavy hydrocarbon chains using UTCHEM. It was observed that the geochemical and transport model depicts the precipitation of Calcite as well as the dissolution of K-Feldspar. There was the evolution of CO2 and CH4 gases. Moreover, altering temperature and pH, appreciably affected the saturation indices of the various phases. The enhancement of oil recovery reached 10% by increasing the yeast extract concentration from 50 mg/l to 500 mg/l at a salinity of 10 g/l and temperature of 60 degrees Celcius.

本文言語英語
ホスト出版物のタイトル80th EAGE Conference and Exhibition 2018
ホスト出版物のサブタイトルOpportunities Presented by the Energy Transition
出版社European Association of Geoscientists and Engineers, EAGE
ISBN(電子版)9789462822542
DOI
出版ステータス出版済み - 2018
イベント80th EAGE Conference and Exhibition 2018: Opportunities Presented by the Energy Transition - Copenhagen, デンマーク
継続期間: 6 11 20186 14 2018

出版物シリーズ

名前80th EAGE Conference and Exhibition 2018: Opportunities Presented by the Energy Transition

会議

会議80th EAGE Conference and Exhibition 2018: Opportunities Presented by the Energy Transition
Countryデンマーク
CityCopenhagen
Period6/11/186/14/18

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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