Final rule · 2026-04135

Offshore Downhole Commingling Regulatory Updates

The Department of the Interior (DOI or Department), through the Bureau of Safety and Environmental Enforcement (BSEE), is revising the Outer Continental Shelf (OCS) downhole commingling regulations consistent with the One Big Beautiful Bill Act (OBBB). These revisions update the regulations to ensure consistency with the OBBB when BSEE reviews a request for downhole commingling.