Texaco Inc.

Kevin D Kimber

William C Richardson

A process of using a non-radioactive tracer in the monitoring of the flow of a traced fluid is disclosed. The process includes injecting a tracer containing fluid at a first point and analyzing at least one sample from a second point in the flow of the fluid for the tracer compound. In one embodiment heavy oil is traced with a long chain hydrocarbon having a primary chain of more than 25 carbon atoms, the compound preferably being a saturated hydrocarbon. Exemplary tracer compounds include pentacosane (C,H,); hexacosane (C,H,), heptacosane (C,H,), octacosane(C,H,), nonacosane(C,H,), triacontane(C,H,), hentriacontane(C,lH,), dotriacontane(C,H,), tritriacontane (C,H,), tetratriacontane (C,H,) and the like.

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Riau, Indonesia

Kevin D Kimber