Back to results
US 2024/0254840 A1Published application
Multi-stage wireless completions
AssigneeSchlumberger Technology Corporation
InventorsChristian Chouzenoux, Alain Guelat
Life of this patent
Estimating the term…
Abstract
Wireless power and telemetry systems for multi-stage completions are provided. Various configurations for couplers, e.g., electro-magnetic couplers, for use in such systems are also provided.
Claims20
A wireless transmission system for a multi-stage completion, comprising:
- a surface power and telemetry system;
- an upper completion comprising a casing, a production tubing disposed within the casing, a tubing hanger supporting the production tubing, and an upper coupler;
- a lower completion comprising a production liner, a liner hanger disposed within the casing and supporting the production liner, a lower coupler, and one or more downhole devices;
- a first cable extending from the surface power and telemetry system to the upper coupler;
- and
- a second cable extending from the lower coupler to the one or more downhole devices;
- wherein in use, power and telemetry signals flow from the surface power and telemetry system along the first cable to the upper coupler, thereby inducing a current in the production tubing such that the power and telemetry signals flow along the production tubing downhole to the lower coupler, the power and telemetry signals flow from the lower coupler along the second cable to the one or more downhole devices, and return telemetry signals flow from the lower completion along the casing to the surface power and telemetry system.
4 more elements
A coupler for use in a wireless power and telemetry transmission system, the coupler comprising:
- an outer housing;
- a plurality of toroidal transformers disposed about a tubing mandrel and within the housing.
A multi-stage completion, comprising:
- an upper completion comprising a casing, a production tubing disposed within the casing, a tubing hanger supporting the production tubing, and an upper coupler;
- and
- a lower completion comprising a production liner, a liner hanger disposed within the casing and supporting the production liner, a lower coupler, and one or more downhole devices;
- wherein in use, power and telemetry signals flow from a surface power and/or telemetry system to the upper coupler, thereby inducing a current in the production tubing such that the power and telemetry signals flow along the production tubing downhole to the lower coupler, the power and telemetry signals flow from the lower coupler to the one or more downhole devices, and return telemetry signals flow from the lower completion along the casing to the surface power and telemetry system.
1 more element
Dependencies are inferred from the claim text.