Tullow Oil has warned of lower-than-forecast Ghana production and disappointing crude quality in Guyana. A trading update on 13 November said full-year production from Ghana’s Jubilee field would be around 89,000 b/d, down from 96,000 b/d forecast in the H1 results in July, due to new problems with the FPSO vessel. Tullow cited “topside issues which have constrained water injection and gas handling”, saying water injection would be restored to full capacity by the end of November, while enhancements to the gas handling system were planned for early 2020.