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Note 6 - Exploratory Well Costs (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Capitalized Exploratory Well Costs, Roll Forward [Table Text Block]
   

Nine Months

Ended

September 30,

2022

 

Beginning capitalized exploratory well costs

  $ 28,076  

Additions to exploratory well costs

    385,440  

Reclassification to proved properties

    (319,220

)

Exploratory well costs charged to exploration and abandonment expense

     

Ending capitalized exploratory well costs

  $ 94,296