This report provides a detailed analysis of Santos Ltd.'s financial and economic performance for the fiscal year 2018, comparing it with the results of 2017. The executive summary highlights significant improvements in profitability, driven by enhanced price realizations in oil and LNG sales, and an increase in proven reserves, indicating sustainable earnings. The analysis section examines key financial indicators such as product sales, EBITAX, and debt-equity ratio, and non-financial indicators, including reserve and production volumes. The interpretation section justifies the choice of financial and non-financial indicators, attributing the revenue growth to rising prices despite lower sales volumes. It discusses the impact of higher price realizations on EBITDAX and PAT, and the importance of reserves for future income generation. The report concludes that Santos Ltd. demonstrated substantial improvements in both financial and non-financial metrics in FY2018. It recommends careful management of the debt-equity ratio, considering the cyclical nature of the business and potential impacts of fluctuating oil and LNG prices. The report references the Santos 2018 Annual Report and several financial management textbooks.