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Prepaid expenses
 6 Months Ended
Jun. 30, 2023
Notes and other explanatory information [abstract]  
Prepaid expenses

4. Prepaid expenses

 

   June 30, 2023   December 31, 2022 
Exploration and production advances  $1,542,172   $871,527 
Prepaid expenses   62,599    83,852 
Prepaid taxes   21,578    7,433 
Prepaid expenses and deposits   1,626,349    962,812