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Note 6 - Revenue (Tables) | 9 Months Ended
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Sep. 30, 2022
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Well construction |  | $ | 129,455 |  |  | $ | - |  |  | $ | 362,684 |  |  | $ | - |
Well management |  |  | 204,896 |  |  |  | 197,547 |  |  |  | 565,768 |  |  |  | 530,093 |
Total |  | $ | 334,351 |  |  | $ | 197,547 |  |  | $ | 928,452 |  |  | $ | 530,093 |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
|  | September 30, |  |  | December 31, |
|  | 2022 |  |  | 2021 |
Trade receivable, net |  | $ | 288,002 |  |  | $ | 236,158 |
Unbilled receivables (included within accounts receivable, net) |  | $ | 143,598 |  |  | $ | 94,659 |
Deferred revenue (included within other liabilities) |  | $ | 21,840 |  |  | $ | 17,038 |

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