US 11,732,577 B2
Downhole multiplexed electrical system
Lorenzzo Breda Minassa, Tomball, TX (US); and Aswin Balasubramanian, The Woodlands, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on May 26, 2021, as Appl. No. 17/303,311.
Prior Publication US 2022/0381141 A1, Dec. 1, 2022
Int. Cl. E21B 47/12 (2012.01); E21B 17/02 (2006.01); H04B 3/36 (2006.01); G01V 11/00 (2006.01)
CPC E21B 47/12 (2013.01) [E21B 17/028 (2013.01); G01V 11/002 (2013.01); H04B 3/36 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system comprising:
a surface control unit;
a first downhole tubular comprising a control module, wherein the control module comprises a controller, a first transistor, and a second transistor;
a control line comprising a single conductor, the control line coupled between the surface control unit and the controller;
a second downhole tubular including a first downhole well tool and first electronics, the first electronics of the second downhole tubular coupled to the first downhole tubular via a first connector, wherein the first connector includes a first A-conductor, a first B-conductor, and a first C-conductor, wherein the controller is configured to control commands to the first connector, and wherein actuation of the first downhole well tool includes,
based on a first command, selection of, with the controller, the first A-conductor and application of a first current in a first direction on the first A-conductor via the first transistor,
actuation of, via the first current, the first downhole well tool, and
return of the first current in a second direction on the first B-conductor via the second transistor;
a third downhole tubular comprising a second downhole well tool and second electronics, the second electronics of the third downhole tubular coupled to the second downhole tubular via a second connector, wherein the second connector includes a second A-conductor electrically coupled with the first A-conductor, a second B-conductor electrically coupled with the first B-conductor, and a second C-conductor electrically coupled with the first C-conductor, and wherein actuation of the second downhole well tool includes,
transmission of a second command from the surface control unit to the control module via the single conductor,
based on the second command, application of a second current in the first direction on the first B-conductor via the second transistor,
actuation of, via the second current, the second downhole well tool, and
return of the second current in the second direction via the first C-conductor and the second C-conductor or via the first A-conductor and the second A-conductor.