US 12,410,685 B2
Using fluid pill for heat transfer downhole
Christian Reding, Houston, TX (US); David Earl Ball, Stafford, TX (US); Marcus Ray Hudson, Pearland, TX (US); James Cernosek, Richmond, TX (US); and Jay Deville, Spring, TX (US)
Assigned to HALLIBURTON ENERGY SERVICES, INC., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jan. 3, 2024, as Appl. No. 18/403,437.
Prior Publication US 2025/0215768 A1, Jul. 3, 2025
Int. Cl. E21B 36/00 (2006.01); C09K 5/16 (2006.01); E21B 21/00 (2006.01)
CPC E21B 36/001 (2013.01) [C09K 5/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A downhole tool for use in a post-drilling operation, comprising:
a heat-generating segment;
a tool body positionable on a tool string for running the downhole tool into a drilled wellbore;
a first chamber and a second chamber separately defined within the tool body, each of the first chamber and the second chamber configured to releasably hold a fluid pill comprising one or more materials that enable the fluid pill to transfer heat from the heat-generating segment of the downhole tool to a wall of the wellbore;
at least one port in the tool body; and
a pump within the tool body, the pump in fluid communication with the first chamber, the second chamber, and the at least one port, and operatable to selectively expel a fluid pill from one or both of the first chamber and the second chamber through the at least one port and into the drilled wellbore.