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US 12,552,983 B2Granted
Tracer compositions
AssigneeSaudi Arabian Oil Company
InventorsShitong Sherry Zhu, Ayrat Gizzatov, Nermeen Saadoun
Life of this patent
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Abstract
A method for tracing gas flow in a hydrocarbon reservoir with compositions including a degradable polymer and a detectable component. An exemplary method includes introducing a tracer composition at a first location in the reservoir, contacting the tracer composition with the reservoir to hydrolyze the degradable polymer, and detecting a degraded tracer composition including the hydrolyzed polymer and the detectable component in a gas sample collected at a second location in the reservoir.
Claims25
A method of tracing gas flow in a hydrocarbon reservoir, comprising:
- introducing a tracer composition at a first location in the reservoir, wherein the tracer composition comprises a degradable polymer and a detectable component;
- contacting the tracer composition with the reservoir to hydrolyze the degradable polymer;
- and
- detecting a degraded tracer composition in a gas sample collected at a second location in the reservoir, wherein the degraded tracer composition comprises the hydrolyzed polymer and the detectable component;
- wherein the detectable component comprises:
- a fluorescent dye;
- and
- a metal oxide.
5 more elements
Dependencies are inferred from the claim text.