Simulation studies on the mechanisms and performances of MEOR using polymer producing microorganism clostridium sp. TU-15A

Yuichi Sugai, Hong Chengxie, Tadashi Chida, Heiji Enomoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

Polymer-producing microorganism Clostridium sp. strain TU-15A was isolated from reservoir brine of Jilin Oilfield, China. TU-15A produces polymer in a molasses medium and increases the viscosity of the culture solution to 70cP by 10days cultivation. It's expected to be an effective microorganism for MEOR. In this study, a simulator was developed in order to analyze the mechanisms of MEOR using polymer-producing microorganism. The numerical model in this simulator consists of 2-phases(oil and water) and 5-cornponents(oil, water, microorganism, nutrient and polymer). This model includes almost all processes of MEOR such as growth and death of microorganism, nutrient consumption, polymer production, water viscosity increment, improvement of the flow profile in a reservoir and enhancement of oil recovery. The validity of this simulator was shown by a comparison of both results of the numerical simulation and a flooding experiment. The quantitative change of microorganism, nutrient, polymer(water viscosity) and oil saturation were analyzed by a simulation of MEOR using polymer-producing microorganism on quarter of fivespot pattern flooding. Regarding the alteration of flow pattern in the reservoir, it was found that (1) the polymer produced by microorganism in reservoir flew into the main flow channel along the shortest way between the injection and production wells and water viscosity there increased, (2) subsequently more uniform flow profile of injected water as a postflash was established, and (3) the residual oil was mobilized to the production well. The additional oil recovery of 10% or higher was obtained at the early stage of the post flash. Our simulator will be a first comprehensive simulator for MEOR using an existing strain that produces polymer strongly. By using this simulator, the phenomena occurred in a reservoir on MEOR using a polymer-producing microorganism have been clarified and the high performance of this MEOR process have been demonstrated.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2007 "Resources, Professionalism, Technology
Subtitle of host publicationTime to Deliver"
Pages833-842
Number of pages10
Publication statusPublished - Dec 1 2007
EventSociety of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2007 "Resources, Professionalism, Technology: Time to Deliver" - Jakarta, Indonesia
Duration: Oct 30 2007Nov 1 2007

Publication series

NameSPE - Asia Pacific Oil and Gas Conference
Volume2

Other

OtherSociety of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2007 "Resources, Professionalism, Technology: Time to Deliver"
CountryIndonesia
CityJakarta
Period10/30/0711/1/07

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Energy Engineering and Power Technology

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    Sugai, Y., Chengxie, H., Chida, T., & Enomoto, H. (2007). Simulation studies on the mechanisms and performances of MEOR using polymer producing microorganism clostridium sp. TU-15A. In Society of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2007 "Resources, Professionalism, Technology: Time to Deliver" (pp. 833-842). (SPE - Asia Pacific Oil and Gas Conference; Vol. 2).