Abstract
The COMPASS project addresses three major challenges of superhot geothermal well construction: Corrosive environment, thermal expansions and
contractions in casings, and pressure build-up in fluid trapped between casings when wells heat up. The corrosive environment is tackled by investigating and developing methods for cladding standard casing materials with corrosive resistant materials (CRA). The problems related to thermal expansions/contractions in long casings is tackled by developing flexible cement solutions that will work with Flexible Couplings (FC) for reducing stresses. Annular Pressure Buildup (APB) relieve system is developed to release excess pressure between cemented metal casings and thereby reduce
risk of casing collapse.