Property And Equipment, Net

6 Months Ended

Jun. 30, 2019

Property, Plant and Equipment [Abstract]

5. Property and Equipment, Net

As of June 30, 2019 and December 31, 2018, total property and equipment, net consisted of the following:



	June 30, 2019			December 31, 2018
	(In thousands)
Oil and gas properties, full cost method
Proved properties		$6,685,543			$6,278,321
Accumulated depreciation, depletion and amortization and impairments	(4,098,202		)	(3,944,851		)
Proved properties, net	2,587,341			2,333,470
Unproved properties, not being amortized
Unevaluated leasehold and seismic costs	580,369			608,830
Capitalized interest	76,607			65,003
Total unproved properties, not being amortized	656,976			673,833
Other property and equipment	30,580			29,191
Accumulated depreciation	(19,392		)	(17,970		)
Other property and equipment, net	11,188			11,221
Total property and equipment, net		$3,255,505			$3,018,524

Average depreciation, depletion and amortization (“DD&A”) per Boe of proved properties was $13.28 and $13.74 for the three months ended June 30, 2019 and 2018, respectively, and $13.28 and $13.73 for the six months ended June 30, 2019 and 2018, respectively.

The Company capitalized internal costs of employee compensation and benefits, including stock-based compensation, directly associated with acquisition, exploration, and development activities totaling $3.8 million and $6.1 million for the three months ended June 30, 2019 and 2018, respectively, and $12.9 million and $12.7 million for the six months ended June 30, 2019 and 2018, respectively.

Unproved properties, not being amortized, include unevaluated leasehold and seismic costs associated with specific unevaluated properties and related capitalized interest. The Company capitalized interest costs associated with its unproved properties totaling

$8.6 million and $8.7 million for the three months ended June 30, 2019 and 2018, respectively, and $17.6 million and $19.1 million for the six months ended June 30, 2019 and 2018, respectively.