Patent ID: 9388667
Filing Date: 2016-07-12
CPC Classification: E21B

Claim Text:
1. A method for heating a production fluid in a wellbore, the method comprising: heating, using a packer fluid, in a first section of the wellbore located on a first side of a packer, a working fluid flowing through a first medium disposed in the first section of the wellbore, wherein the first medium transfers heat from the packer fluid to the working fluid; circulating the working fluid into a second section of the wellbore located on a second side of the packer through a second medium, wherein the second medium transfers heat from the working fluid to the production fluid; returning the working fluid to the first section of the wellbore through the first medium; and wherein the working fluid stays within the wellbore and wherein the production fluid is separated from the packer fluid by the packer.