Fluorine-containing tracers for subterranean petroleum and mineral containing formations
AssigneeMobil Oil Corporation
InventorsCatherine S. H. Chen, Yuhshi Luh, Kirk D. Schmitt
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Abstract
There is disclosed a method for determining flow patterns within a subterranean formation by injecting as a tracer a water soluble alkaline metal salt of inorganic or organic compounds having fluorine in the anion. The tracer compounds of the invention are identified by FNMR spectroscopy.
Claims3
The method for determining flow patterns within a subterranean formation penetrated by a spaced apart injection system and production system that comprises injecting into the formation at a predetermined depth from the injection system a saline solution containing a small amount of one or more water-soluble tracer compounds, recovering said saline solution in the production system, determining the depth of recovery, and identifying said tracer compounds by .sup.19 FNMR spectroscopy;
- said tracer compounds being water-soluble alkali metal salts of inorganic or organic compounds having fluorine in the anion.
Dependencies are inferred from the claim text.