Featured Gas OilInvestment in upstream oil and gas records 50% drop in 5 yearsOur Reporter May 5, 2022May 5, 2022 by Our Reporter May 5, 2022May 5, 20220273 … Local operators, Lee Engineering, Oilserv, Seplat, advocate natural gas, technology devt. as key enabler Investment in production of crude oil in the past five