The purpose of this bill is to establish the Horizontal Well Unitization and Landowner Protection Act of 2016. The bill provides for the unitization of interests in drilling units in connection with all horizontal oil or gas wells. The bill creates key landowner protections. The bill sets forth unit application requirements. The bill establishes the standard of review. The bill provides for shallow horizontal well orders. The bill requires notice and timeliness. The bill provides for hearings. The bill adds new definitions. The bill modifies existing definitions. The bill provides a method for the reunification of surface and subsurface estates. The bill provides an alternate mechanism for funding the Oil and Gas Reclamation Fund.