NIGERIA has struck a deal for Shell to supply gas to its proposed $3.8 billion Brass methanol facility, resolving a major hurdle to a final investment decision on the project, the minister of state for gas said. Nigeria, which holds Africa's largest natural gas reserves of more than 200 trillion cubic feet, has struggled to tap the commodity due to capital constraints and a lack of infrastructure. Minister Ekperikpe Ekpo said in a statement that the Gas Supply and Purchase Agreement (GSPA), crucial for the Brass methanol project, will be executed next month following successful talks with Shell's Nigeria CEO and…