Pulling string of casing.

43-02-02-20.1. Pulling string of casing. When removing casing strings from any subsurface mineral or injection well, the space above the casing stub shall be kept and left full of fluid with adequate gel strength and specific gravity, cement, or combination thereof, to seal off all freshwater and saltwater strata and any strata bearing oil or gas not producing. No casing shall be removed without the prior approval of the director. History: Effective July 1, 2013. General Authority: NDCC 38-12-02 Law Implemented: NDCC 38-12-02 19