CASE STUDY: OIL RECOVERY BENEATH ICE

Approximately 6,000 gal of No. 2 diesel oil were spilled during the winter of 1977 from an onshore storage tank in Nome, Alaska. The oil saturated the snow and soil adjacent to the storage tank and penetrated the ice cover of Snake River. Oil containment and recovery operations involved the removal of contaminated snow, soil, and ice; sorption of oil with 3M sorbent materials and with available snow at the site; and the collection of oil from beneath an ice cover 3 to 4 ft thick using an oil mop. The oleophilic, closed-loop rope mop was fed beneath the ice between two holes, one for the oil mop wringer assembly and collection reservoir and the other for the system's tail pulley. Recovery totaled approximately 2,000 gal over a period of 1 week with air temperatures approaching -30 deg F (-35 deg C). Recovery rates of 2 gal/min were achieved with the rope mop beneath the ice, while oil-water ratios were in excess of 95 percent.

  • Supplemental Notes:
    • Presented at the 10th Annual OTC in Houston, Texas, May 8-11, 1978.
  • Corporate Authors:

    Offshore Technology Conference

    6200 North Central Expressway
    Dallas, TX  USA  45206
  • Authors:
    • Allan, A A
  • Publication Date: 1978

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00178163
  • Record Type: Publication
  • Source Agency: Offshore Technology Conference
  • Report/Paper Numbers: OTC 3078, Vol 1 Proceeding
  • Files: TRIS
  • Created Date: Jul 19 1978 12:00AM