1. The following applies to geological storage in an oil and gas reservoir or saline reservoir: a. Injection pressure at the wellhead may not exceed a maximum authorized injection pressure which must be calculated to assure that the pressure in the storage reservoir during injection does not initiate new fracture or propagate existing fractures in the confining zones. b. In no case may injection pressure initiate fractures in the confining zones or cause the movement of injection or formation fluids into an unauthorized zone or underground source of drinking water.

2. The following applies to geological storage in a salt cavern: a. A minimum operating pressure protective of the cavern's integrity must be maintained. b. A maximum allowable operating pressure must be established based on the casing seat or the highest elevation of the cavern's roof, whichever is higher in elevation.

History: Effective April 1, 2022. General Authority: NDCC 38-08-04 Law Implemented: NDCC 38-25