00000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 00000002 - Statement - Unaudited Condensed Consolidated Statements of Financial Position link:presentationLink link:calculationLink link:definitionLink 00000003 - Statement - Unaudited Condensed Consolidated Statements of Income link:presentationLink link:calculationLink link:definitionLink 00000004 - Statement - Unaudited Condensed Consolidated Statements of Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 00000005 - Statement - Unaudited Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 00000006 - Statement - Unaudited Condensed Consolidated Statements of Changes in Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 999007 - Disclosure - Basis of preparation link:presentationLink link:calculationLink link:definitionLink 999008 - Disclosure - Material accounting policies link:presentationLink link:calculationLink link:definitionLink 999009 - Disclosure - Cash and cash equivalents and financial investments link:presentationLink link:calculationLink link:definitionLink 999010 - Disclosure - Sales revenues link:presentationLink link:calculationLink link:definitionLink 999011 - Disclosure - Costs and expenses by nature link:presentationLink link:calculationLink link:definitionLink 999012 - Disclosure - Other income and expenses, net link:presentationLink link:calculationLink link:definitionLink 999013 - Disclosure - Net finance income (expense) link:presentationLink link:calculationLink link:definitionLink 999014 - Disclosure - Information by operating segment link:presentationLink link:calculationLink link:definitionLink 999015 - Disclosure - Trade and other receivables link:presentationLink link:calculationLink link:definitionLink 999016 - Disclosure - Inventories link:presentationLink link:calculationLink link:definitionLink 999017 - Disclosure - Prepayments link:presentationLink link:calculationLink link:definitionLink 999018 - Disclosure - Trade payables link:presentationLink link:calculationLink link:definitionLink 999019 - Disclosure - Taxes link:presentationLink link:calculationLink link:definitionLink 999020 - Disclosure - Employee benefits link:presentationLink link:calculationLink link:definitionLink 999021 - Disclosure - Provisions for legal proceedings, judicial deposits and contingent liabilities link:presentationLink link:calculationLink link:definitionLink 999022 - Disclosure - Provision for decommissioning costs link:presentationLink link:calculationLink link:definitionLink 999023 - Disclosure - Other assets and liabilities link:presentationLink link:calculationLink link:definitionLink 999024 - Disclosure - Property, plant and equipment link:presentationLink link:calculationLink link:definitionLink 999025 - Disclosure - Intangible assets link:presentationLink link:calculationLink link:definitionLink 999026 - Disclosure - Impairment link:presentationLink link:calculationLink link:definitionLink 999027 - Disclosure - Exploration and evaluation of oil and gas reserves link:presentationLink link:calculationLink link:definitionLink 999028 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 999029 - Disclosure - Disposal of assets and other transactions link:presentationLink link:calculationLink link:definitionLink 999030 - Disclosure - Finance debt link:presentationLink link:calculationLink link:definitionLink 999031 - Disclosure - Lease liability link:presentationLink link:calculationLink link:definitionLink 999032 - Disclosure - Equity link:presentationLink link:calculationLink link:definitionLink 999033 - Disclosure - Financial risk management link:presentationLink link:calculationLink link:definitionLink 999034 - Disclosure - Related party transactions link:presentationLink link:calculationLink link:definitionLink 999035 - Disclosure - Supplemental information on statement of cash flows link:presentationLink link:calculationLink link:definitionLink 999036 - Disclosure - Subsequent events link:presentationLink link:calculationLink link:definitionLink 999037 - Disclosure - Cash and cash equivalents and financial investments (Tables) link:presentationLink link:calculationLink link:definitionLink 999038 - Disclosure - Sales revenues (Tables) link:presentationLink link:calculationLink link:definitionLink 999039 - Disclosure - Costs and expenses by nature (Tables) link:presentationLink link:calculationLink link:definitionLink 999040 - Disclosure - Other income and expenses, net (Tables) link:presentationLink link:calculationLink link:definitionLink 999041 - Disclosure - Net finance income (expense) (Tables) link:presentationLink link:calculationLink link:definitionLink 999042 - Disclosure - Information by operating segment (Tables) link:presentationLink link:calculationLink link:definitionLink 999043 - Disclosure - Trade and other receivables (Tables) link:presentationLink link:calculationLink link:definitionLink 999044 - Disclosure - Inventories (Tables) link:presentationLink link:calculationLink link:definitionLink 999045 - Disclosure - Prepayments (Tables) link:presentationLink link:calculationLink link:definitionLink 999046 - Disclosure - Trade payables (Tables) link:presentationLink link:calculationLink link:definitionLink 999047 - Disclosure - Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 999048 - Disclosure - Employee benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 999049 - Disclosure - Provisions for legal proceedings, judicial deposits and contingent liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 999050 - Disclosure - Provision for decommissioning costs (Tables) link:presentationLink link:calculationLink link:definitionLink 999051 - Disclosure - Other assets and liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 999052 - Disclosure - Property, plant and equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 999053 - Disclosure - Intangible assets (Tables) link:presentationLink link:calculationLink link:definitionLink 999054 - Disclosure - Impairment (Tables) link:presentationLink link:calculationLink link:definitionLink 999055 - Disclosure - Exploration and evaluation of oil and gas reserves (Tables) link:presentationLink link:calculationLink link:definitionLink 999056 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 999057 - Disclosure - Disposal of assets and other transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 999058 - Disclosure - Finance debt (Tables) link:presentationLink link:calculationLink link:definitionLink 999059 - Disclosure - Lease liability (Tables) link:presentationLink link:calculationLink link:definitionLink 999060 - Disclosure - Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 999061 - Disclosure - Financial risk management (Tables) link:presentationLink link:calculationLink link:definitionLink 999062 - Disclosure - Related party transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 999063 - Disclosure - Supplemental information on statement of cash flows (Tables) link:presentationLink link:calculationLink link:definitionLink 999064 - Disclosure - Subsequent events (Tables) link:presentationLink link:calculationLink link:definitionLink 999065 - Disclosure - Cash and cash equivalents and financial investments (Details) link:presentationLink link:calculationLink link:definitionLink 999066 - Disclosure - Cash and cash equivalents and financial investments (Details 1) link:presentationLink link:calculationLink link:definitionLink 999067 - Disclosure - Sales revenues (Details) link:presentationLink link:calculationLink link:definitionLink 999068 - Disclosure - Sales revenues (Details 1) link:presentationLink link:calculationLink link:definitionLink 999069 - Disclosure - Costs and expenses by nature (Details) link:presentationLink link:calculationLink link:definitionLink 999070 - Disclosure - Costs and expenses by nature (Details 1) link:presentationLink link:calculationLink link:definitionLink 999071 - Disclosure - Costs and expenses by nature (Details 2) link:presentationLink link:calculationLink link:definitionLink 999072 - Disclosure - Other income and expenses, net (Details) link:presentationLink link:calculationLink link:definitionLink 999073 - Disclosure - Net finance income (expense) (Details) link:presentationLink link:calculationLink link:definitionLink 999074 - Disclosure - Information by operating segment (Details) link:presentationLink link:calculationLink link:definitionLink 999075 - Disclosure - Information by operating segment (Details 1) link:presentationLink link:calculationLink link:definitionLink 999076 - Disclosure - Information by operating segment (Details 2) link:presentationLink link:calculationLink link:definitionLink 999077 - Disclosure - Information by operating segment (Details 3) link:presentationLink link:calculationLink link:definitionLink 999078 - Disclosure - Sales revenues (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999079 - Disclosure - Trade and other receivables (Details) link:presentationLink link:calculationLink link:definitionLink 999080 - Disclosure - Trade and other receivables (Details 1) link:presentationLink link:calculationLink link:definitionLink 999081 - Disclosure - Trade and other receivables (Details 2) link:presentationLink link:calculationLink link:definitionLink 999082 - Disclosure - Trade and other receivables (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999083 - Disclosure - Inventories (Details) link:presentationLink link:calculationLink link:definitionLink 999084 - Disclosure - Inventories (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999085 - Disclosure - Prepayments (Details) link:presentationLink link:calculationLink link:definitionLink 999086 - Disclosure - Trade payables (Details) link:presentationLink link:calculationLink link:definitionLink 999087 - Disclosure - Trade payables (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999088 - Disclosure - Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 999089 - Disclosure - Taxes (Details 1) link:presentationLink link:calculationLink link:definitionLink 999090 - Disclosure - Taxes (Details 2) link:presentationLink link:calculationLink link:definitionLink 999091 - Disclosure - Taxes (Details 3) link:presentationLink link:calculationLink link:definitionLink 999092 - Disclosure - Taxes (Details 4) link:presentationLink link:calculationLink link:definitionLink 999093 - Disclosure - Taxes (Details 5) link:presentationLink link:calculationLink link:definitionLink 999094 - Disclosure - Taxes (Details 6) link:presentationLink link:calculationLink link:definitionLink 999095 - Disclosure - Taxes (Details 7) link:presentationLink link:calculationLink link:definitionLink 999096 - Disclosure - Taxes (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999097 - Disclosure - Employee benefits (Details) link:presentationLink link:calculationLink link:definitionLink 999098 - Disclosure - Employee benefits (Details 1) link:presentationLink link:calculationLink link:definitionLink 999099 - Disclosure - Employee benefits (Details 2) link:presentationLink link:calculationLink link:definitionLink 999100 - Disclosure - Employee benefits (Details 3) link:presentationLink link:calculationLink link:definitionLink 999101 - Disclosure - Employee benefits (Details 4) link:presentationLink link:calculationLink link:definitionLink 999102 - Disclosure - Employee benefits (Details 5) link:presentationLink link:calculationLink link:definitionLink 999103 - Disclosure - Employee benefits (Details 6) link:presentationLink link:calculationLink link:definitionLink 999104 - Disclosure - Employee benefits (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999105 - Disclosure - Provisions for legal proceedings, judicial deposits and contingent liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 999106 - Disclosure - Provisions for legal proceedings, judicial deposits and contingent liabilities (Details 1) link:presentationLink link:calculationLink link:definitionLink 999107 - Disclosure - Provisions for legal proceedings, judicial deposits and contingent liabilities (Details 2) link:presentationLink link:calculationLink link:definitionLink 999108 - Disclosure - Provisions for legal proceedings, judicial deposits and contingent liabilities (Details 3) link:presentationLink link:calculationLink link:definitionLink 999109 - Disclosure - Provisions for legal proceedings, judicial deposits and contingent liabilities (Details 4) link:presentationLink link:calculationLink link:definitionLink 999110 - Disclosure - Provisions for legal proceedings, judicial deposits and contingent liabilities (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999111 - Disclosure - Provision for decommissioning costs (Details) link:presentationLink link:calculationLink link:definitionLink 999112 - Disclosure - Provision for decommissioning costs (Details 1) link:presentationLink link:calculationLink link:definitionLink 999113 - Disclosure - Other assets and liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 999114 - Disclosure - Property, plant and equipment (Details) link:presentationLink link:calculationLink link:definitionLink 999115 - Disclosure - Property, plant and equipment (Details 1) link:presentationLink link:calculationLink link:definitionLink 999116 - Disclosure - Property, plant and equipment (Details 2) link:presentationLink link:calculationLink link:definitionLink 999117 - Disclosure - Property, plant and equipment (Details 3) link:presentationLink link:calculationLink link:definitionLink 999118 - Disclosure - Property, plant and equipment (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999119 - Disclosure - Intangible assets (Details) link:presentationLink link:calculationLink link:definitionLink 999120 - Disclosure - Impairment (Details) link:presentationLink link:calculationLink link:definitionLink 999121 - Disclosure - Impairment (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999122 - Disclosure - Exploration and evaluation of oil and gas reserves (Details) link:presentationLink link:calculationLink link:definitionLink 999123 - Disclosure - Exploration and evaluation of oil and gas reserves (Details 1) link:presentationLink link:calculationLink link:definitionLink 999124 - Disclosure - Exploration and evaluation of oil and gas reserves (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999125 - Disclosure - Investments (Details) link:presentationLink link:calculationLink link:definitionLink 999126 - Disclosure - Disposal of assets and other transactions (Details) link:presentationLink link:calculationLink link:definitionLink 999127 - Disclosure - Disposal of assets and other transactions (Details 1) link:presentationLink link:calculationLink link:definitionLink 999128 - Disclosure - Disposal of assets and other transactions (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999129 - Disclosure - Finance debt (Details) link:presentationLink link:calculationLink link:definitionLink 999130 - Disclosure - Finance debt (Details 1) link:presentationLink link:calculationLink link:definitionLink 999131 - Disclosure - Finance debt (Details 2) link:presentationLink link:calculationLink link:definitionLink 999132 - Disclosure - Finance debt (Details 3) link:presentationLink link:calculationLink link:definitionLink 999133 - Disclosure - Finance debt (Details 4) link:presentationLink link:calculationLink link:definitionLink 999134 - Disclosure - Finance debt (Details 5) link:presentationLink link:calculationLink link:definitionLink 999135 - Disclosure - Finance debt (Details 6) link:presentationLink link:calculationLink link:definitionLink 999136 - Disclosure - Finance debt (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999137 - Disclosure - Lease liability (Details) link:presentationLink link:calculationLink link:definitionLink 999138 - Disclosure - Lease liability (Details 1) link:presentationLink link:calculationLink link:definitionLink 999139 - Disclosure - Lease liability (Details 2) link:presentationLink link:calculationLink link:definitionLink 999140 - Disclosure - Lease liability (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999141 - Disclosure - Equity (Details) link:presentationLink link:calculationLink link:definitionLink 999142 - Disclosure - Equity (Details 1) link:presentationLink link:calculationLink link:definitionLink 999143 - Disclosure - Equity (Details 2) link:presentationLink link:calculationLink link:definitionLink 999144 - Disclosure - Equity (Details 3) link:presentationLink link:calculationLink link:definitionLink 999145 - Disclosure - Equity (Details 4) link:presentationLink link:calculationLink link:definitionLink 999146 - Disclosure - Equity (Details 5) link:presentationLink link:calculationLink link:definitionLink 999147 - Disclosure - Equity (Details 6) link:presentationLink link:calculationLink link:definitionLink 999148 - Disclosure - Equity (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999149 - Disclosure - Financial risk management (Details) link:presentationLink link:calculationLink link:definitionLink 999150 - Disclosure - Financial risk management (Details 1) link:presentationLink link:calculationLink link:definitionLink 999151 - Disclosure - Financial risk management (Details 2) link:presentationLink link:calculationLink link:definitionLink 999152 - Disclosure - Financial risk management (Details 3) link:presentationLink link:calculationLink link:definitionLink 999153 - Disclosure - Financial risk management (Details 4) link:presentationLink link:calculationLink link:definitionLink 999154 - Disclosure - Financial risk management (Details 5) link:presentationLink link:calculationLink link:definitionLink 999155 - Disclosure - Financial risk management (Details 6) link:presentationLink link:calculationLink link:definitionLink 999156 - Disclosure - Financial risk management (Details 7) link:presentationLink link:calculationLink link:definitionLink 999157 - Disclosure - Financial risk management (Details 8) link:presentationLink link:calculationLink link:definitionLink 999158 - Disclosure - Financial risk management (Details 9) link:presentationLink link:calculationLink link:definitionLink 999159 - Disclosure - Financial risk management (Details 10) link:presentationLink link:calculationLink link:definitionLink 999160 - Disclosure - Financial risk management (Details 11) link:presentationLink link:calculationLink link:definitionLink 999161 - Disclosure - Financial risk management (Details 12) link:presentationLink link:calculationLink link:definitionLink 999162 - Disclosure - Financial risk management (Details 13) link:presentationLink link:calculationLink link:definitionLink 999163 - Disclosure - Related party transactions (Details) link:presentationLink link:calculationLink link:definitionLink 999164 - Disclosure - Related party transactions (Details 1) link:presentationLink link:calculationLink link:definitionLink 999165 - Disclosure - Related party transactions (Details 2) link:presentationLink link:calculationLink link:definitionLink 999166 - Disclosure - Related party transactions (Details 3) link:presentationLink link:calculationLink link:definitionLink 999167 - Disclosure - Related party transactions (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999168 - Disclosure - Supplemental information on statement of cash flows (Details) link:presentationLink link:calculationLink link:definitionLink 999169 - Disclosure - Supplemental information on statement of cash flows (Details 1) link:presentationLink link:calculationLink link:definitionLink 999170 - Disclosure - Subsequent events (Details) link:presentationLink link:calculationLink link:definitionLink 999171 - Disclosure - Subsequent events (Details Narrative) link:presentationLink link:calculationLink link:definitionLink