TRACER METHOD AND APPARATUS
First Claim
1. A method of monitoring the flow of fluid within or from a reservoir comprising the steps of inserting in said reservoir a solid tracer comprising at least one non-radioactive metal selected from the group consisting of caesium, niobium, tantalum, tellurium, terbium, lanthanum, gold, iridium, osmium, silver, platinum, palladium, rhenium, ruthenium, rhodium, hafnium, indium, a metal of the Lanthanide series of the periodic table, and a salt thereof, thereafter collecting a sample of fluid within or flowing from the reservoir and analysing said sample to determine an amount of said tracer contained in the sample, wherein the tracer is inserted into the reservoir by means of a perforation tool.
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Accused Products
Abstract
A method of monitoring the flow of fluid within or from an oil or gas reservoir includes inserting a solid tracer into the reservoir. The tracer comprises at least one metal selected from caesium, niobium, tantalum, tellurium, terbium, lanthanum, gold, iridium, osmium, silver, platinum, palladium, rhenium, ruthenium, rhodium, hafnium, indium, a metal of the Lanthanide series of the periodic table, or a salt thereof. A sample of fluid within or flowing from the reservoir is collected and analysed to determine the amount of the tracer contained in the sample. A perforation tool allows for insertion of the tracer within the formation.
44 Citations
17 Claims
- 1. A method of monitoring the flow of fluid within or from a reservoir comprising the steps of inserting in said reservoir a solid tracer comprising at least one non-radioactive metal selected from the group consisting of caesium, niobium, tantalum, tellurium, terbium, lanthanum, gold, iridium, osmium, silver, platinum, palladium, rhenium, ruthenium, rhodium, hafnium, indium, a metal of the Lanthanide series of the periodic table, and a salt thereof, thereafter collecting a sample of fluid within or flowing from the reservoir and analysing said sample to determine an amount of said tracer contained in the sample, wherein the tracer is inserted into the reservoir by means of a perforation tool.
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10. (canceled)
- 11. A perforation tool comprising an elongate body having a central longitudinal axis, a control means, deployment means and at least one explosive charge mounted on or within said body and associated with detonation means, said charge being arranged to direct energy explosively and outwardly from the elongate body upon detonation, and at least one tracer material mounted on or within said body within the path of said explosive energy, wherein the tracer material is solid and comprises at least one non-radioactive metal selected from the group consisting of caesium, niobium, tantalum, tellurium, terbium, lanthanum, gold, iridium, osmium, silver, platinum, palladium, rhenium, ruthenium, rhodium, hafnium, indium, a metal of the Lanthanide series of the periodic table, and a salt thereof.
Specification