	US 12,305,501 B2
	Distributed fiber sensing in a packer for permanent casing and formation deformation monitoring
Damian San Roman Alerigi, Al Khobar (SA); Jose Oliverio Alvarez, Houston, TX (US); Adrian Cesar Cavazos Sepulveda, Nuevo Leon (MX); and Sameeh Issa Batarseh, Dhahran Hills (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Oct. 31, 2022, as Appl. No. 18/051,435.
Prior Publication US 2024/0141777 A1, May 2, 2024
Int. Cl. E21B 47/085 (2012.01); E21B 47/007 (2012.01); E21B 47/135 (2012.01)

CPC E21B 47/085 (2020.05) [E21B 47/007 (2020.05); E21B 47/135 (2020.05)]

15 Claims

1. A wellbore deformation instrument, comprising:

an expandable annular cylindrical packer;

a plurality of assemblies mounted on an exterior circumferential surface of the packer and configured to be pressed against a wellbore surface by the packer, wherein the each of the assemblies comprises:

at least one fiber-optic coil embedded in a sheet of deformable substrate,

a tray-shaped receptacle formed from a low thermal conductivity material and attached along a rim of the receptacle to an edge of the sheet with a pressure tight-seal, wherein a pressure-tight compartment formed by the receptacle, the sheet, and the seal contains a high-pressure inert gas, and

an optical coupler, configured to couple the at least one fiber-optic coil to a fiber-optic cable.