ABSTRACT
The Alpine Field, located on the Coville River Delta on the North Slope of Alaska, has been developed exclusively with horizontal wells since 2000. Despite extensive knowledge accumulated throughout the development of the field, many geological uncertainties remain, due to the sedimentary and tectonic complexity of the field. The further development of the field included the drilling of a dual-lateral well targeting two sand layers at different stratigraphic positions within two siliciclastic depositional sequences separated by a major erosional surface stratigraphy of the target interval consists of divided by a major unconformity. Operations were further complicated by logistic consequences of the spreading of the Covid-19 pandemic, deeply affecting travel and physical interactions. These new work conditions would present a challenge to most operators on how to ensure fluid and timely communications between the geosteering team members working from different locations. Despite geological complexity, and the need for fully remote support, geosteering operations proved successful and achieved the desired planned objectives with 70% of the wellbore drilled within the target layer in the upper leg and 95% of the wellbore placed in the target layer in the lower leg. © 3rd EAGE/SPE Geosteering Workshop 2021.