US 12,286,875 B2
System and method of using a thermoplastic casing in a wellbore
Steven M. Hatten, Casper, WY (US); and John W. Cash, Casper, WY (US)
Assigned to Ur-Energy USA Inc., Littleton, CO (US)
Filed by Ur-Energy USA Inc., Littleton, CO (US)
Filed on Feb. 28, 2023, as Appl. No. 18/115,387.
Claims priority of provisional application 63/314,778, filed on Feb. 28, 2022.
Prior Publication US 2023/0272702 A1, Aug. 31, 2023
Int. Cl. E21B 43/28 (2006.01); E21B 17/10 (2006.01); E21B 29/00 (2006.01); E21B 33/14 (2006.01); E21B 43/04 (2006.01); E21B 43/08 (2006.01); E21B 43/10 (2006.01); E21B 7/28 (2006.01)
CPC E21B 43/28 (2013.01) [E21B 17/1078 (2013.01); E21B 29/002 (2013.01); E21B 33/14 (2013.01); E21B 43/04 (2013.01); E21B 43/08 (2013.01); E21B 43/10 (2013.01); E21B 7/28 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of installing and using a casing composed of a continuous, non-jointed, thermoplastic tubing in a wellbore, comprising:
uncoiling, by a deployment tool, a tubing and lowering the tubing and a tremie line into the wellbore until a screen at a lower end of the tubing reaches a predetermined depth;
raising, by the deployment tool, the tubing and the tremie line by a predetermined distance to straighten and centralize the tubing within the wellbore;
injecting gravel through the tremie line to surround the screen with gravel as the tremie line is retrieved from the wellbore;
injecting cement through the tremie line to fill an annular space between the tubing and the wellbore as the tremie line is further retrieved from the wellbore;
removing, by the deployment tool, the tremie line from the wellbore and cutting the tubing leaving the casing without joints from a surface of the wellbore to the screen; and
injecting a lixiviant fluid into the tubing where the lixiviant fluid travels through the screen and into a geologic formation where the lixiviant fluid interacts with uranium ore to produce a uranium-enriched lixiviant fluid.