We carried out a screening study for a relatively large onshore acid gas field in Nigeria with reserves of 1.5 Trillion Cubic Feet and Carbon Dioxide content of 4.6 Mol%. A key element of the study was to assess the optimum method for reduction of Carbon Dioxide concentrations to levels that would allow the gas to be processed in an existing LNG facility. The development and operating cost estimates were generated using our NETCO$TER Cost Evaluation Software.