Effects of oil reservoir conditions on the production of water‐insoluble Levan byBacillus licheniformis
作者:
J. Akit Ramsay,
D.G. Cooper,
R. J. Neufeld,
期刊:
Geomicrobiology Journal
(Taylor Available online 1989)
卷期:
Volume 7,
issue 3
页码: 155-165
ISSN:0149-0451
年代: 1989
DOI:10.1080/01490458909377859
出版商: Taylor & Francis Group
关键词: Bacillus licheniformis;MEOR;microbial enhanced oil recovery;oil reservoir;selective plugging agent;levan;extracellular enzymes
数据来源: Taylor
摘要:
Bacillus licheniformisproduced a water‐insoluble levan which has potential application as a selective plugging agent in microbial enhanced oil recovery (MEOR). The microorganism grew on sucrose, glucose, and fructose but produced levan only on sucrose. Plugging may thus be selectively controlled in the reservoir by substrate manipulation.B. licheniformisand a crude preparation of its extracellular enzymes were evaluated for their ability to produce levan under reservoir conditions. Oil reservoirs which have a temperature of less than 55°C, a pH between 6 and 9, a pressure less than 500 atm, and a salt concentration of 4% or less are potentially suitable. Examples of such reservoir conditions are found in Lloydminster on the Alberta‐Saskatchewan border, one of the largest Canadian oil reserves.
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