S.D. Codified Laws § 45-9-50
Current with legislation signed by the governor on or before 3/6/2024
No division order or other contract relating to the sale or purchase of production from a separately owned tract may be terminated by the order providing for unit operations, but shall remain in force and apply to oil and gas allocated to the tract until terminated in accordance with the provisions of the order or contract.
SDCL 45-9-50