USD 73.9746

-0.92

EUR 83.8354

-0.99

BRENT 68.59

-0.15

AI-92 46.87

0

AI-95 51.02

+0.07

AI-98 59.03

+0.04

Diesel 53.08

+0.07

Mineral geology

A B H J L S

HTR refers to reserves trapped between layers of rock which cannot be accessed using conventional, vertical drilling. It requires techniques including drilling horizontal wells and fracking, similar to methods used to extract shale gas and shale oil.