SANTA FE, N.M. (AP) — New Mexico regulators announced a $2.2 million fine Wednesday against a Texas-based oilfield driller and waste disposal company, though it was unclear whether the company could be compelled to pay.

The New Mexico Oil, Minerals and Natural Resources Department announced a state district court order that Midland, Texas-based Siana Operating cease disposal activities and clean up polluted well sites in the southeast of the state.

Agency spokeswomen Beth Wojahn said Siana has not fulfilled provisions of the recent court judgment. An attorney for Siana could not be reached imm...