The existence of too many leases in North America makes it impossible to model each of these separately. Hence, when analysing unconventional upstream assets in North America, we look at them from a company's overall position in the play/sub-play.
So the nomenclature in Lens for North America unconventional assets is the result of us modelling the company-play positions.
Examples:
"Chevron SAM Conventional HVO CA Fee"
"Chevron" is the company; "SAM" refers to the Santa Maria basin, where the play is located; "Conventional" signifies that this is a conventionally produced; "HVO" = heavy oil for the hydrocarbon type; "CA" is the state of California, and finally "Fee" represents the state lease instead of federal lease.
"Apache DEL Alpine High Woodford Hz SHG TX Fee"
Apache’s leases in the Delaware Basin, specifically in the Alpine High play and Woodford formation, producing shale gas. The leases fees are paid to the state of Texas.