43 C.F.R. § 3162.2-4
What protective action may BLM require the lessee to take to protect the leases from drainage?
We may require you to:
(a) Drill or modify and produce all wells that are necessary to protect the leased mineral resources from drainage;
(b) Enter into a unitization or communitization agreement with the lease containing the draining well; or
(c) Pay compensatory royalties for drainage that has occurred or is occurring.