v3.26.1
Property, Plant and Equipment (Tables)
 3 Months Ended
Mar. 31, 2026
Property, Plant and Equipment [Abstract]  
Schedule of Net Changes in Capitalized Exploratory Well Costs The following table reflects the net changes in capitalized exploratory well costs during the three-month periods ended March 31, 2026 and 2025.
(Thousands of dollars)20262025
Beginning balance at January 1$191,821 $72,055 
  Additions pending the determination of proved reserves84,599 24,790 
  Capitalized exploratory well costs charged to expense(9,610)— 
Balance at March 31$266,810 $96,845 
Schedule of Aging of Capitalized Exploratory Well Costs
The following table provides an aging of capitalized exploration well costs based on the date the drilling operations were initiated for each individual project.
March 31,
20262025
(Thousands of dollars)Amount
No. of Projects
Amount
No. of Projects
Aging of capitalized well costs:
Zero to one year$58,556 1 $9,421 2 
One to two years71,906 2 65,160 3 
Two to three years113,934 3 — — 
Three years or more22,414 3 22,264 3 
$266,810 9 $96,845 8