Increasing Waterflood Recovery Efficiency Through Microbial Selective Plugging

Sulistyarso, Harry Budiharjo and Nugroho, Handika Agung and Saputra, Benny Ariandy (2017) Increasing Waterflood Recovery Efficiency Through Microbial Selective Plugging. PROCEEDINGS JOINT CONVENTION MALANG 2017, HAGI – IAGI – IAFMI- IATMI (JCM 2017). pp. 627-640. ISSN 978-979-8126-30-7

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Waterflooding is one of the improve oil recovery method that is injecting water to the reservoir through the injection well in purpose to push the oil out to the production well and increase the oil recovery. But because of the rockporosity and permeability heterogeneity of the reservoir make the water tends to flow to the high porosity and high permeability in the reservoir rock, so the waterflooding won’t sweep the oil in the lower porosity and permeability, and left it behind. This condition can cause the water breakthrough and water channeling problem where the water rate production will be higher than the oil rate production. The microbial selective plugging is a method of plugging high pore rock uses microbial or microbial metabolic product. The purpose of Microbial Selective Plugging is to increase the efficiency of waterflooding by plugging the high permeability zones and directing injected water into zones of the reservoir that have not been taking water (Lower Permeability Zone). And the water injection can push the oil in lower permeability zone out of the reservoir. In 2009, the microbial selective plugging had been observed by Suthar and his team from Microbiology and Biotechnology Department Centre, India. The Bacillus licheniformis TT33 was used as the bacteria, because the bacteria is facultative anaerobic, halotolerant, thermotolerant, and bio-film forming microorganism. Bacillus licheniformis TT33 can also produce Exopolymeric Substances and bio-surfactant. The selective plugging of Bacillus licheniformis TT33 was analyzed using sand pack column which has saturated with 80±2,9% oil, and the rest with brine. And after the brine flooding, there was 46,9±2,7% unrecoverable oil, and the amount of the unrecoverable oil which had been recovered by Bacillus licheniformis TT33 was 27,7±3,5%.

Item Type: Article
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Date Deposited: 27 Jun 2020 02:11
Last Modified: 27 Jun 2020 02:11

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