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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure Of Significant Accounting Policies [Abstract] |
Schedule of Property, Plant and Equipment Depreciation | Property, plant, and equipment are depreciated as follows:
|  | Expected Life |  | Salvage Value |  | Basis of Depreciation
Drilling rig equipment: |  |  |  |  |  |
– Power & Tubulars |  | 5 years |  | – |  | straight-line
– Dynamic |  | 10 years |  | – |  | straight-line
– Structural |  | 20 years |  | 10% |  | straight-line
Service rig equipment |  | 20 years |  | 10% |  | straight-line
Drilling rig spare equipment |  | up to 15 years |  | – |  | straight-line
Service rig spare equipment |  | up to 15 years |  | – |  | straight-line
Rental equipment |  | up to 15 years |  | 0 to 25% |  | straight-line
Other equipment |  | 3 to 10 years |  | – |  | straight-line
Light duty vehicles |  | 4 years |  | – |  | straight-line
Heavy duty vehicles |  | 7 to 10 years |  | – |  | straight-line
Buildings |  | 10 to 20 years |  | – |  | straight-line

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