Plug and Abandon Order Definition: A direction to a oil well operator to permanently close the well. In American Coastal Energy, Justice Marvin Isgur of the United States Bankruptcy Court (Texas) wrote: "The Court understands that a plug and abandon order requires the operator of a well to permanently close the well so that the well will not pose a future environmental hazard."In Saskatchewan, the Oil and Gas Conservation Regulations (2011) provide, under the heading plugging and abandonment:"... no well, structure test hole or oil shale core hole is to be permitted to remain unplugged or uncased after it is no longer used for the purpose for which it was drilled or converted." REFERENCES:In re American Coastal Energy Inc., 399 BR 805 (2009; @ footnote #1)Oil and Gas Conservation Regulations, 1985, R.R.S. c. O-2 Reg. 1 Categories & Topics: Environmental Law Dictionary Find you are constantly looking up definitions? Try our search provider (works in most modern browsers) If you find an error or omission in Duhaime's Legal Dictionary, or if you have legal term suggestion, we'd love to hear from you!