Fluorescent dye molecules having hydrophilicity and hydrophobicity for tracer applications
AssigneeSaudi Arabian Oil Company
InventorWei Wang
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Abstract
Functionalized fluorescent tracers, methods of making the tracers, and methods of using the tracers are provided. In some implementations, the fluorescent tracers include a functionalized fluorescent dye. The functionalized fluorescent dye includes an isothiocyanate-containing dye functionalized with a functional group that includes a primary amine. In some implementations, a method of tracing fluid flow in a subterranean formation includes mixing the functionalized fluorescent tracer into a fluid, flowing the tracer fluid into a subterranean formation, recovering a sample from a subterranean formation, and analyzing the sample for a fluorescent signal and a barcode functional group.
Claims17
A composition comprising:
- a functionalized fluorescent dye, wherein the functionalized fluorescent dye is formed from an isothiocyanate-containing dye reacted with a primary amine selected from the group consisting of benzylamine, phenethylamine, 3-phenyl-1-propylamine, 4-phenylbutylamine, and 6-phenylhexan-1-amine wherein
- the isothiocyanate-containing dye is selected from the group consisting of Rhodamine B isothiocyanate, an isomer thereof, tetramethylrhodamine isothiocyanate, and an isomer thereof.
A composition comprising:
- a functionalized fluorescent dye, wherein the functionalized fluorescent dye is formed from an isothiocyanate-containing dye reacted with a primary amine selected from the group consisting of 3-phenyl-1-propylamine, 4-phenylbutylamine, and 6-phenylhexan-1-amine wherein
- the isothiocyanate-containing dye is fluorescein isothiocyanate, or an isomer thereof.
Dependencies are inferred from the claim text.