Automatic risk uncertainty estimation to support decision making during drilling operation planning: Case study on an ERD well

Case study on an extended reach drilling (ERD) well demonstrated automatic risk uncertainty estimation to support decision making during drilling operation planning. This methodology was applied during the preparation of an ERD well to be drilled in North Sea. The drilling of this section was characterized by high torques requiring the reduction of the rotational speed to avoid over-heating the top-drive and causing serious problems with cuttings transport.