Intellectual property (Tables)

12 Months Ended

Dec. 31, 2022

Intellectual property

Acquisition Of Sfd? Geothermal Right

	December 31, 2022
	Cost		Accumulated		Net book
	Base		amortization		Value
SFD® Hydrocarbon Right acquired	$	25,271,000	$	12,355,134	$	12,915,866
SFD® Geothermal Right acquired		275,610		22,967		252,643
		25,546,610		12,378,101		13,168,509

	December 31, 2021
	Cost		Accumulated		Net book
	Base		amortization		Value
SFD® Hydrocarbon Right acquired	$	25,271,000	$	10,670,400	$	14,600,600
SFD® Geothermal Right acquired		275,610		9,187		266,423
		25,546,610		10,679,587		14,867,023