VIENNA, Aug 23 (Reuters) - Oilfield equipment maker Schoeller-Bleckmann (SBO) announced a surge in second-quarter earnings on Thursday, putting it on course to return to a full-year net profit. The Austrian group is emerging from a rough patch, triggered by the collapse of oil prices a few years ago, as recovering crude prices prompt producers to invest in new projects. It reported an eightfold increase in...
