New Technique for Enhancing Residual Oil Recovery from Low-Permeability Reservoirs: The Cooperation of Petroleum Hydrocarbon-Degrading Bacteria and SiO₂ Nanoparticles.

ABSTRACT: Residual crude oil production from low-permeability reservoirs has become a huge challenge because conventional recovery techniques are inefficient. Nanofluids as a new type of oil-displacement agent have become a hot topic in recent years to enhance oil recovery (EOR) in reservoirs. However, the imperfection of agglomeration, dissolution, and instability of nanofluids in reservoir environments limit their ability to drive oil. Here, a novel "microbial-nanofluid" composed of petroleum hydrocarbon-degrading bacteria (PHDB, namely Bacillus cereus) and SiO₂ nanoparticles was proposed as a potential new technology for enhancing residual oil recovery. The micromodel displacement test results showed that the optimum composite concentration of "microbial-nanofluids" were PHDB (7

SUBMITTER: Cui K 

PROVIDER: S-EPMC9695329 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature