Tullow Oil Plc cut the upper end of its 2015 forecast for West African oil production after operations in Ghana were affected by a gas-compression fault earlier this year. Output from the region will be 66,000 to 67,000 barrels of oil equivalent a day this year, the London-based company said Wednesday in a statement. That compares with guidance for as much as 70,000 barrels a day in July. Exports from Ghana’s Jubilee project, Tullow’s largest producing field, were halted on July 3 for about a month for repairs to the floating production vessel. The company, like other energy producers around the world, has also suffered from a 40 percent slump in crude prices over the past year amid a global supply glut. Its shares have tumbled more than 50 percent in the period. Another major development off Ghana, the Tweneboa-Enyenra-Ntomme — or TEN — project, is on schedule to […]