The plunge in crude prices to below $50 a barrel has curbed oil and gas explorers’ plans for drilling in Namibia next year, the country’s petroleum commissioner said. “We have at least three majors which have indicated to us that they will be drilling in 2016, Immanuel Mulunga said by phone on Thursday from the capital, Windhoek. ‘‘I am more confident of three instead of five or six’’ announced last year, he said. While Namibia was interesting to explorers ‘‘way before’’ oil rose to $100 a barrel, ‘‘the current trend is worrying,’’ Mulunga said. Explorers are cutting back or delaying projects and drilling plans after crude plunged more than 50 percent since June. Basins off Namibia have attracted attention from the world’s biggest oil explorers on a bet that the southwest African nation’s coastal shelf may mirror that of Brazil across the Atlantic and neighboring Angola, the […]