US 12,276,162 B2
Multi-stage wireless completions
Christian Chouzenoux, Clamart (FR); and Alain Guelat, Clamart (FR)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Apr. 10, 2024, as Appl. No. 18/631,610.
Application 18/631,610 is a continuation of application No. 17/621,266, granted, now 11,982,132, previously published as PCT/US2020/039338, filed on Jun. 24, 2020.
Claims priority of provisional application 62/866,555, filed on Jun. 25, 2019.
Prior Publication US 2024/0254840 A1, Aug. 1, 2024
Int. Cl. E21B 17/02 (2006.01); E21B 47/13 (2012.01)
CPC E21B 17/023 (2013.01) [E21B 17/0285 (2020.05); E21B 47/13 (2020.05)] 14 Claims
OG exemplary drawing
 
8. 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, wherein the upper coupler includes a plurality of toroidal transformers disposed on an outer surface of the production tubing, wherein the upper coupler further comprises an outer housing disposed about the plurality of toroidal transformers, wherein a space between the outer housing of the upper coupler surrounding the plurality of toroidal transformers is filled with an insulating material or inert gas at atmospheric pressure, and wherein the upper coupler is configured to receive power and telemetry signals from a surface power and/or telemetry system and induce a current in the production tubing; and
a lower completion comprising a production liner, a liner hanger disposed within the casing and supporting the production liner, a lower coupler comprising a second plurality of toroidal transformers surrounded by a second outer housing, and one or more downhole devices; wherein in use, the power and telemetry signals flow from the surface power and/or telemetry system to the upper coupler, the power and telemetry signals flow from the upper coupler 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.