Back to results
US 12,704,061 B2Granted
Deployment and interpretation of tracer technology using downhole equipment
AssigneeSchlumberger Technology Corporation
InventorsHadrien Dumont, Morten Kristensen, Adriaan Gisolf, Francois-Xavier Dubost
Life of this patent
Estimating the term…
Abstract
Embodiments presented provide for a method and apparatus for downhole tracer technology. In specific embodiments, different tracers may be placed into an injection well and amounts of residual carbon dioxide saturation may be determined.
Claims16
A method for deployment and interpretation of tracers in a geological formation, comprising:
- conveying a downhole testing apparatus to a desired elevation within a wellbore;
- setting a dual-packer arrangement, defining a position to evaluate next to the wellbore;
- pumping mud from an interval defined by the dual-packer arrangement;
- injecting carbon dioxide into the interval defined by the dual-packer arrangement;
- injecting at least one tracer carried by a volume sampling chamber of the downhole testing apparatus into the formation;
- interpreting residual carbon dioxide saturation by measuring a concentration of the at least one tracer versus time;
- circulating a fluid other than mud to a bottom of a drill pipe;
- injecting the fluid other than mud into the interval;
- and
- deflating the dual-packer arrangement.
7 more elements
A method for deployment and interpretation of tracers in a geological formation, comprising:
- conveying a downhole testing apparatus to a desired elevation within a wellbore;
- setting a dual-packer arrangement, defining a position to evaluate next to the wellbore;
- pumping mud from an interval defined by the dual-packer arrangement;
- injecting carbon dioxide into the interval defined by the dual-packer arrangement;
- removing mud from a drill pipe using a circulating sub;
- closing the circulating sub;
- performing a flow test of a fluid into the drill pipe;
- injecting drill pipe formation water back into the interval;
- injecting at least one tracer carried by a volume sampling chamber of the downhole testing apparatus into the formation;
- interpreting residual carbon dioxide saturation by measuring a concentration of the at least one tracer versus time;
- and
- conducting a test of formation fluids with the downhole testing apparatus.
9 more elements
Dependencies are inferred from the claim text.