The Lata Group Inc.

Atlantic Richfield Company

Bruce Alan Iiams

Donald O Hitzman

D Michael Dennis

An apparatus and method produces nitrate ions on-site from water, natural gas and air extracted in proximity to the apparatus. The apparatus generates nitrate ions and brings the nitrate ions into contact with an aqueous system. Hydrogen sulfide present in the aqueous system is removed and the production of hydrogen sulfide by sulfate-reducing bacteria (SRB) is eliminated by introducing into the system nitrate ions, whereby denitrifying microorganisms, using nitrate, outcompete the sulfate-reducing bacteria for the available carbon nutrients, thus preventing the SRB from producing hydrogen sulfide. Nitrate ions generated by the apparatus and added to the aqueous system which contains the denitrifying microorganisms can enhance oil recovery by means of microbial enhanced oil recovery mechanisms.

Method for on-site production of nitrate ions

Apparatus for on-site production of nitrate ions

Formaldehyde and similar biocides are transported in a gelled, semi-solid or solid state by providing formaldehyde in a concentration in methanol of about fifty-five percent (55%) to eighty-five percent (85%) by weight, loading the solution in rail cars or truck transport tanks in a liquid state and cooling the solution to a gelled, semi-solid or solid state for transport to a destination followed by reheating the solution and/or mixing with a solvent for discharge to an application such as the produced water flowstreams from Alaskan North Slope oil fields, for example.

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Anchorage, AK, United States of America

Bruce Alan Iiams