Mineral-Encapsulated Tracers
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United States of America Patent
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Sep 22, 2016
app pub date -
Jun 24, 2014
filing date -
Jun 24, 2013
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Abstract
The invention provides controlled-release compositions comprising at least one encapsulating compound and at least one tracer and/or oil-field chemical, wherein the encapsulating compound is in the form of synthetic crystals having inclusions, and wherein said tracer and/or oil-field chemical is encapsulated within said inclusions. The invention further provides methods for the use of such composition including in tracking the flow, pH and/or salinity of at least one fluid within a geothermal reservoir or a reservoir for petroleum production, as well as in monitoring the integrity of cap and other barriers to fluid flow within the reservoir. Methods for the formation of such compositions are also provided.
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