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Characterization of organic contaminants and assessment of remediation performance in subsurface formations

  • US 5,905,036 A
  • Filed: 09/26/1997
  • Issued: 05/18/1999
  • Est. Priority Date: 01/23/1995
  • Status: Expired due to Fees
First Claim
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1. A method for determining a three dimensional distribution of nonaqueous phase liquid located in a subsurface formation, comprising:

  • (A) introducing one or more non-partitioning tracers and one or more partitioning tracers into one or more injection points located in the subsurface formation;

    (B) withdrawing the one or more non-partitioning tracers and one or more partitioning tracers from one or more sampling points located in the subsurface formation;

    wherein the introducing occurs at two or more depths or the withdrawing occurs at two or more depths or wherein both the withdrawing and the introducing occur at two or more depths; and

    (C) measuring separation between the one or more non-partitioning tracers and the one or more partitioning tracers from the one or more sampling points to determine the three dimensional distribution of the nonaqueous phase liquid in the subsurface formation.

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