
<oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:title>Aqueous Flooding Methods for Tertiary Oil Recovery</dc:title>
  <dc:creator>Peru, Deborah A.</dc:creator>
  <dc:description>A method of aqueous flooding of subterranean oil bearing formation for tertiary oil recovery involves injecting through a well into the formation a low alkaline pH aqueous sodium bicarbonate flooding solution. The flooding solution&apos;s pH ranges from about 8.25 to 9.25 and comprises from 0.25 to 5 weight percent and preferably about 0.75 to 3.0 weight percent of sodium bicarbonate and includes a petroleum recovery surfactant of 0.05 to 1.0 weight percent and between 1 and 20 weight percent of sodium chloride. After flooding, an oil and water mixture is withdrawn from the well and the oil is separated from the oil and water mixture.</dc:description>
  <dc:description>Sponsorship: IIT Research Institute</dc:description>
  <dc:description>United States Patent</dc:description>
  <dc:date>2009-05-08</dc:date>
  <dc:date>1989-04-04</dc:date>
  <dc:type>Patent</dc:type>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>islandora:9724</dc:identifier>
  <dc:identifier>4,817,715</dc:identifier>
  <dc:identifier>http://hdl.handle.net/10560/2371</dc:identifier>
  <dc:language>en</dc:language>
  <dc:rights>No Copyright - United States</dc:rights>
  <dc:rights>http://rightsstatements.org/page/NoC-US/1.0/</dc:rights>
  <dc:rights>Open Access</dc:rights>
</oai_dc:dc>