Black Stone Minerals(BSM) - 2022 Q4 - Annual Report

Development well. A well drilled within the proved area of an oil and natural gas reservoir to the depth of a stratigraphic horizon known to be productive. Exploitation. A drilling or other project which may target proven or unproven reserves (such as probable or possible reserves), but which generally has a lower risk than that associated with exploration projects. Extension well. A well drilled to extend the limits of a known reservoir. Gross acres or gross wells. The total acres or wells, as the case may ...