[Society of Petroleum Engineers International Symposium on Oilfield Chemistry - Houston, Texas, U.S.A. (2007-02-28)] International Symposium on Oilfield Chemistry - Use of Nitrate or Nitrite for the Management of the Sulfur Cycle in Oil and Gas FieldsVoordouw, Gerrit; Buziak, Brenton; Lin, Shiping; Grigoriyan, Alexander; Kaster, Krista M.; Jenneman, Gary Edward; Arensdorf, Joseph John