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Property, Plant and Equipment
3 Months Ended
Mar. 31, 2024
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
3.  Property, Plant and Equipment
Capitalized Exploratory Well Costs:  
The following table discloses the net changes in capitalized exploratory well costs pending determination of proved reserves during the three months ended March 31, 2024 (in millions):

Balance at January 1, 2024$952 
Additions to capitalized exploratory well costs pending the determination of proved reserves65 
Balance at March 31, 2024$1,017 
In the first three months, additions to capitalized exploratory well costs pending determination of proved reserves primarily related to wells drilled on the Stabroek Block (Hess 30%), offshore Guyana. At March 31, 2024, 37 exploration and appraisal wells on the Stabroek Block, with a total cost of $904 million, were capitalized pending determination of proved reserves.
At March 31, 2024, exploratory well costs capitalized for greater than one year following completion of drilling of $812 million was comprised of the following:
Guyana: 88% of the capitalized well costs in excess of one year relate to successful exploration and appraisal wells where hydrocarbons were encountered on the Stabroek Block.  In April 2024, the Government of Guyana and the partners sanctioned the development of the Whiptail project, the sixth sanctioned project on the block. Approximately $115 million of capitalized exploratory well costs at March 31, 2024 related to the Whiptail project will be reclassified to wells, facilities and equipment in the second quarter of 2024. The operator also plans further appraisal drilling on the block and is conducting pre-development planning for additional phases of development.
Suriname:  5% of the capitalized well costs in excess of one year relate to the Zanderij-1 well on Block 42 (Hess 33%). Exploration and appraisal activities are ongoing.
Joint Development Area (JDA):  5% of the capitalized well costs in excess of one year relate to the JDA (Hess 50%) in the Gulf of Thailand, where hydrocarbons were encountered in three successful exploration wells drilled in the western part of Block A-18. The operator has submitted a development plan concept to the regulator to facilitate ongoing commercial negotiations for an extension of the existing gas sales contract to include development of the western part of the block.
Malaysia:  2% of the capitalized well costs in excess of one year relate to the North Malay Basin (Hess 50%), offshore Peninsular Malaysia, where hydrocarbons were encountered in two successful exploration wells.  Pre-development studies are ongoing.