Development of a microbial process for the recovery of petroleum oil from depleted reservoirs at 91-96 °C

被引：31

作者：

Arora, Preeti ^{[1
]}

Ranade, Dilip R. ^{[1
]}

Dhakephalkar, Prashant K. ^{[1
]}

机构：

[1] Agharkar Res Inst, Microbial Sci Div, Pune 411004, Maharashtra, India

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 165卷

关键词：

Microbial Enhanced Oil Recovery (MEOR); Sand pack; Core flood; Hyperthermophile;

D O I：

10.1016/j.biortech.2014.03.109

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A consortium of bacteria growing at 91 degrees C and above (optimally at 96 degrees C) was developed for the recovery of crude oil from declining/depleted oil reservoirs having temperature of more than 91 degrees C. PCR-DGGE-Sequencing analysis of 16S rRNA gene fragments of NJS-4 consortium revealed the presence of four strains identified as members of the genus Clostridium. The metabolites produced by NJS-4 consortium included volatile fatty acids, organic acids, surfactants, exopolysaccarides and CO2, which reduced viscosity, emulsified crude oil and increased the pressure that facilitated displacement of emulsified oil towards the surface. NJS-4 enhanced oil recovery by 26.7% and 10.1% in sand pack trials and core flood studies respectively in optimized nutrient medium comprised of sucrose and sodium acetate as carbon/energy source and urea as nitrogen source (pH 7-9, 96 degrees C, and 4% salinity). Nutrient medium for MEOR was constituted using commercial grade cheap nutrients to improve the economic viability of MEOR process. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：274 / 278

页数：5

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