Abstract: Combinations of a nitroprusside, such as sodium nitroprusside (SNP; Na2[Fe(CN)5NO].2H2O) and a nitrate, are provided, together with methods for the combined use of the nitroprusside and the nitrate as metabolic inhibitors of microbial cultures. The microbial cultures may include sulfate reducing bacteria (SRB) in aqueous culture. This metabolic inhibition may for example be implemented in the presence of a hydrocarbon, for example in an oil reservoir or in oil field systems and facilities. When applied to an SRB culture in the presence of a hydrocarbon, the combination of the nitroprusside and the nitrate may accordingly be used to ameliorate the biological formation of sulfides, particularly hydrogen sulfide.

Abstract: Combinations of a nitroprusside, such as sodium nitroprusside (SNP; Na2[Fe(CN)5NO].2H2O) and a nitrate, are provided, together with methods for the combined use of the nitroprusside and the nitrate as metabolic inhibitors of microbial cultures. The microbial cultures may include sulfate reducing bacteria (SRB) in aqueous culture. This metabolic inhibition may for example be implemented in the presence of a hydrocarbon, for example in an oil reservoir or in oil field systems and facilities. When applied to an SRB culture in the presence of a hydrocarbon, the combination of the nitroprusside and the nitrate may accordingly be used to ameliorate the biological formation of sulfides, particularly hydrogen sulfide.

Abstract: Methods for the recovery of geological hydrocarbons from hydrocarbon reservoirs include injecting a low molecular weight oil soluble hydrocarbon compound and an electron acceptor into a reservoir, which enter a region of the reservoir comprising a microbial culture capable of metabolizing the low molecular weight hydrocarbon compound and the electron acceptor, thereby promoting flow of geological hydrocarbon.

Abstract: Techniques for hydrocarbon recovery from a carbonate reservoir include injecting a microbial stimulation fluid including H2 which enters a region of the reservoir that includes CO2 and a microbial culture which converts at least a portion of the H2 and CO2 into a byproduct to promote dissolution of carbonate compounds in the region of the reservoir, thereby increasing porosity of the region to promote hydrocarbon recovery.

Abstract: Biogenic sulfide production is synergistically inhibited by treating sulfate-reducing bacteria (SRB) with a biocide and a metabolic inhibitor. The biocide directly kills a first portion of the SRB. The metabolic inhibitor inhibits sulfate-reducing growth of a second portion of the SRB without directly killing the second portion of the SRB. The treatment of SRB with both a biocide and a metabolic inhibitor provides effective biogenic sulfide inhibition at significantly lower concentrations than would be required if the biocide or metabolic inhibitor was used alone.

Abstract: Biogenic sulfide production is synergistically inhibited by treating sulfate-reducing bacteria (SRB) with a biocide and a metabolic inhibitor. The biocide directly kills a first portion of the SRB. The metabolic inhibitor inhibits sulfate-reducing growth of a second portion of the SRB without directly killing the second portion of the SRB. The treatment of SRB with both a biocide and a metabolic inhibitor provides effective biogenic sulfide inhibition at significantly lower concentrations than would be required if the biocide or metabolic inhibitor was used alone.

Abstract: Biogenic sulfide production is synergistically inhibited by treating sulfate-reducing bacteria (SRB) with a biocide and a metabolic inhibitor. The biocide directly kills a first portion of the SRB. The metabolic inhibitor inhibits sulfate-reducing growth of a second portion of the SRB without directly killing the second portion of the SRB. The treatment of SRB with both a biocide and a metabolic inhibitor provides effective biogenic sulfide inhibition at significantly lower concentrations than would be required if the biocide or metabolic inhibitor was used alone.

Abstract: Biogenic sulfide production is synergistically inhibited by treating sulfate-reducing bacteria (SRB) with a biocide and a metabolic inhibitor. The biocide directly kills a first portion of the SRB. The metabolic inhibitor inhibits sulfate-reducing growth of a second portion of the SRB without directly killing the second portion of the SRB. The treatment of SRB with both a biocide and a metabolic inhibitor provides effective biogenic sulfide inhibition at significantly lower concentrations than would be required if the biocide or metabolic inhibitor was used alone.

Abstract: A reverse genome probe process for detecting the presence of selected microorganisms (which may be bacteria, fungi or viruses) consists of: (a) affixing a nucleic acid preparation from each of the selected microorganisms to a solid surface; (b) preparing a “reverse” probe by labelling a nucleic acid preparation obtained from the sample; (c) contacting the reverse probe with the solid surface under conditions which permit hybridization; and (d) detecting the presence of any reverse genome probe. By using the “reverse” probe (i.e., a probe prepared from the sample, as opposed to a probe prepared from a selected microorganism), a single incubation may be used for the initial characterization of an unknown sample.