MI SB0394

Establishes that ownership of subsurface pore space (open space in geological formations capable of storing carbon dioxide or other substances) belongs to the owner of the overlying surface property unless previously severed

Requires that any conveyance of surface property automatically includes pore space unless explicitly excluded; conveyances of mineral rights do not include pore space unless explicitly stated

Allows pore space to be severed from surface ownership through conveyance, reservation, or lease, with instruments required to describe the geologic formation or depth and scope of surface use rights

Preserves existing common law rights of mineral estate owners, including their dominance and right to explore and produce minerals, and does not invalidate pore space rights acquired before the act takes effect

Conditions the act's effectiveness on passage of related legislation (Senate Bill No. 395 and either S01283'25 or H01283'25)