A joint venture operated by U.S. supermajor Chevron has made an oil and gas discovery offshore Nigeria as international majors bolster exploration amid the top African producer’s efforts to boost hydrocarbon output and offer more favorable terms for investments. The Nigerian National Petroleum Company Limited (NNPC Ltd) on Monday commended Chevron Nigeria Limited (CNL), operator of the NNPC Ltd/CNL joint venture, on the successful completion of the Awodi-07 appraisal and exploration well located in the shallow offshore western Niger…