US 11,859,449 B2
Systems for a dissolvable material based downhole tool
Bodong Li, Dhahran (SA); Jianhui Xu, Dhahran (SA); Abrar Alshaikh, Saihat (SA); Chinthaka P. Gooneratne, Dhahran (SA); and Guodong Zhan, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Dec. 10, 2021, as Appl. No. 17/643,657.
Prior Publication US 2023/0184103 A1, Jun. 15, 2023
Int. Cl. E21B 47/12 (2012.01); E21B 34/06 (2006.01)
CPC E21B 47/138 (2020.05) [E21B 34/063 (2013.01); E21B 2200/08 (2020.05)] 14 Claims
OG exemplary drawing
 
1. A downhole sub comprising:
a body defined by a wall extending in an axial direction from a first end to a second end, wherein an inner surface of the wall defines a flow path through the downhole sub and an outer surface of the wall defines an outer diameter of the downhole sub;
a compartment extending from the outer surface into the wall to having a depth less than a thickness of the wall;
a housing removably fixed in the compartment;
one or more mobile devices disposed in the housing, wherein each of the one or more mobile devices comprises a sensor encapsulated in a protective material;
a plug blocking an opening of the housing, wherein the plug is made of a dissolvable material configured to dissolve at a predetermined depth in a wellbore and release the one or more mobile devices into the wellbore
wherein the housing comprises a storage compartment to store the one or more mobile devices, and
wherein the opening extends a length from a top surface of the housing to the storage compartment, and the plug is coupled into the opening, and
a back lid removably fixed in a slot of the housing to close a bottom of the storage compartment.