System and method of using a thermoplastic casing in a wellbore

A system for using a continuous, non-jointed thermoplastic casing in a wellbore, comprising:

• a screen connected to an end of the casing, wherein the casing is stored in a coil;
• a tremie line is selectively connected to the screen at a location above a lower end of the screen;
• wherein, in a first mode of operation, the casing is uncoiled and the casing and the tremie line are lowered into the wellbore until the screen reaches a geologic formation, wherein the wellbore has an inner diameter that is larger than an outer diameter of the casing to allow for the tremie line to provide a grout or cement seal;
• and
• wherein, in a second mode of operation, the tremie line is disconnected from the screen, and at least one of gravel or cement flows through the tremie line to pack the screen and grout the casing as the tremie line is removed from the wellbore.

A method of extracting an ore from a geologic formation, comprising:

• lowering a casing and an injection screen which is connected to an end of the casing into a wellbore;
• sealing a distal end of the casing and pressurizing an interior volume of the casing with a fluid as the casing is cemented in place in the wellbore to form an injection well;
• providing a production well having a casing and a production screen engaged with the casing of the production well;
• injecting a lixiviant fluid into the injection well where the lixiviant fluid travels through the casing of the injection well, through the injection screen, and into the geologic formation;
• receiving a combination of the lixiviant fluid and the ore from the geologic formation through the production screen of the production well;
• and
• drawing the combination of the lixiviant fluid and the ore through the casing of the production well and out of the production well.