Namibia’s energy minister has urged Shell to maintain the pace of appraisal and development activities on its huge Graff oil and gas discovery after the supermajor’s country manager warned against moving fast.

Shell is thought to have found some 2 billion barrels of oil and up to 6 trillion cubic feet of gas at Graff and has just completed its first appraisal well on the deep-water find.

Dennis Zekveld, Shell’s country head in Namibia, told delegates at the Namibia International Energy Conference in Windhoek, that patience will be needed when it comes to commercialising Graff.