Patent ID: 11939841
Assignee: GREAT BASIN BRINE, LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 6:
7. A method for insulating a completed well having a first annulus and a second annulus disposed within the first annulus and separated from the first annulus by a casing, comprising:
identifying a hydrocarbon layer and a cement boundary in the first annulus;
perforating the casing proximate to the cement boundary to create a perforation;
draining the hydrocarbon layer through the perforation in the casing into the second annulus, and subsequently removing hydrocarbons from the well, thereby leaving a void in the first annulus;
injecting a thermal insulating fluid into the void in the first annulus;
draining the thermal insulating fluid through the perforation into the second annulus; and
cementing the perforation.