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Property, Plant and Equipment
 9 Months Ended
Sep. 30, 2021
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
NOTE 3 — PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment is comprised of fixed assets, proved oil and natural gas properties and financing leases, as shown below (in thousands):
September 30, 2021December 31, 2020
Land and land improvement$15,284 $13,808 
Proved properties76,406 62,227 
Wells in progress11,200 492 
Corporate and other3,476 3,476 
Total property, plant and equipment at cost106,366 80,003 
Accumulated DD&A(47,424)(38,764)
Right of use asset — financing leases58,176 20,018 
Total property, plant and equipment, net$117,118 $61,257 
Land
We own land in Louisiana for the purpose of constructing the Driftwood terminal.