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Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2023
Fair Value Disclosures [Abstract]  
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis The following fair value hierarchy table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis at June 30, 2023 and December 31, 2022:
 
                     
                     
                     
                     
June 30, 2023
  
Quoted Prices in
Active Markets
For Identical
Assets (Level 1)
 
  
Significant
Other
Observable
Inputs (Level 2)
 
  
Significant
Unobservable
Inputs (Level 3)
 
  
Balance at
June 30,
2023
 
(Thousands of dollars)
                           
Assets
                                   
Commodity derivative contracts
  
$
—  
 
  
$
—  
 
  
$
—  
 
  
$
—  
 
    
 
 
    
 
 
    
 
 
    
 
 
 
Total assets
  
$
—  
 
  
$
—  
 
  
$
—  
 
  
$
—  
 
    
 
 
    
 
 
    
 
 
    
 
 
 
Liabilities
                                   
Commodity derivative contracts
  
$
—  
 
  
$
—  
 
  
$
—  
 
  
$
—  
 
    
 
 
    
 
 
    
 
 
    
 
 
 
Total liabilities
  
$
—  
 
  
$
—  
 
  
$
—  
 
  
$
—  
 
    
 
 
    
 
 
    
 
 
    
 
 
 
 
                    
                    
                    
                    
December 31, 2022
  
Quoted Prices in
Active Markets
For Identical
Assets (Level 1)
 
  
Significant
Other
Observable
Inputs (Level 2)
 
  
Significant
Unobservable
Inputs (Level 3)
 
  
Balance at
December 31,
2022
 
(Thousands of dollars)
                           
Assets
                                   
Commodity derivative contracts
  
$
—  
 
  
$
—  
 
  
$
210
 
  
$
210
 
    
 
 
    
 
 
    
 
 
    
 
 
 
Total assets
  
$
—  
 
  
$
—  
 
  
$
210
 
  
$
210
 
    
 
 
    
 
 
    
 
 
    
 
 
 
Liabilities
                                   
Commodity derivative contracts
  
$
—  
 
  
$
—  
 
  
$
(1,190
  
$
(1,190
    
 
 
    
 
 
    
 
 
    
 
 
 
Total liabilities
  
$
—  
 
  
$
—  
 
  
$
(1,190
  
$
(980
    
 
 
    
 
 
    
 
 
    
 
 
 
Schedule of Changes in Fair Value of Financial Assets and Liabilities Classified as Level 3
The following table sets forth a reconciliation of changes in the fair value of financial assets and liabilities classified as Level 3 in the fair value hierarchy for the six months ended June 30, 2023.
 
(Thousands of dollars)
      
Net Liabilities – December 31, 2022
   $ (980
Total realized and unrealized gains (losses):
        
Included in earnings (a)
     414  
Purchases, sales, issuances and settlements
     566  
    
 
 
 
Net Liabilities — June 30, 2023
   $ —    
    
 
 
 
 
(a)
Derivative instruments are reported in revenues as realized gain/loss and on a separately reported line item captioned unrealized gain/loss on derivative instruments.
Effect of Derivative Instruments on Consolidated Balance Sheets
The following table sets forth the effect of derivative instruments on the consolidated balance sheets at June 30, 2023 and December 31, 2022:

 
  
 
 
  
Fair Value
 
(Thousands of dollars)
  
Balance Sheet Location
 
  
June 30,
2023
 
  
December 31,
2022
 
Asset Derivatives:
                          
Derivatives not designated as cash-flow hedging instruments:
                          
Crude oil commodity contract
     Derivative asset      $ —        $ 162  
Natural gas commodity contract
     Derivative asset        —          48  
             
 
 
    
 
 
 
Total
            $ —        $ 210  
             
 
 
    
 
 
 
Liability Derivatives:
                          
Derivatives not designated as cash-flow hedging instruments:
                          
Crude oil commodity contracts
     Derivative liability      $ —        $ (931
Natural gas commodity contracts
     Derivative liability        —          (259
             
 
 
    
 
 
 
Total
            $ —        $ (1,190
             
 
 
    
 
 
 
Total derivative instruments
            $ —        $ (980
 
 
 
 
 
 
 
 
 
 
 
 
 
Effect of Derivative Instruments on Consolidated Statements of Operations
The following tab
l
e sets forth the effect of derivative instruments on the consolidated statements of operations for the six months ended June 30, 2023 and 2022:
 
 
  
 
  
Amount of gain/loss
recognized in income
 
(Thousands of dollars)
  
Location of gain/loss recognized in income
  
2023
 
  
2022
 
Derivatives not designated as cash-flow hedge instruments:
                      
Natural gas commodity contracts
   Unrealized gain (loss) on derivative instruments,
net
     211        (966
Crude oil commodity contracts
   Unrealized gain (loss) on derivative instruments,
net
     769        (3,240
Natural gas commodity contracts
  
Realized gain (loss) on derivative instruments,
net
     24        (1,986
Crude oil commodity contracts
   Realized loss on derivative instruments, net      (590      (7,721
         
 
 
    
 
 
 
          $ 414      $ (13,913