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Note 6 - Revenue (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
Well construction |  | $ | 500,438 |  |  | $ | 112,126 |  |  | $ | - |
Well management |  |  | 778,980 |  |  |  | 713,636 |  |  |  | 675,026 |
Total |  | $ | 1,279,418 |  |  | $ | 825,762 |  |  | $ | 675,026 |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
|  | December 31, |
|  | 2022 |  |  | 2021 |
Trade receivable, net |  | $ | 289,235 |  |  | $ | 236,158 |
Unbilled receivables (included within accounts receivable, net) |  | $ | 139,690 |  |  | $ | 94,659 |
Deferred revenue (included within other liabilities) |  | $ | 51,192 |  |  | $ | 17,038 |

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