In pulling strings of casing from any well, the space above the casing stub must 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 may be removed without the prior approval of the director.
N.D. Admin Code 43-02-03-24
General Authority: NDCC 38-08-04
Law Implemented: NDCC 38-08-04