020-24 Wyo. Code R. § 24-7

Current through April 27, 2019

Section 24-7 - Minimum criteria for siting Class VI wells

(a) Owners or operators of Class VI wells must demonstrate to the satisfaction of the administrator that the wells will be sited in areas with a suitable geologic system. The geologic system must be comprised of:

• (i) An injection zone of sufficient areal extent, thickness, porosity, and permeability to receive the total anticipated volume of the carbon dioxide stream; and

• (ii) A confining zone(s) that is free of transmissive faults or fractures and of sufficient areal extent and integrity to contain the injected carbon dioxide stream and displaced formation fluids and allow injection at proposed maximum pressures and volumes without initiating or propagating fractures in the confining zone(s) or causing non-transmissive faults to become transmissive.

(b) Owners or operators of Class VI wells must identify and characterize additional zones, if they exist, that will impede vertical fluid movement, allow for pressure dissipation, and provide additional opportunities for monitoring, mitigation and remediation. Vertical faults and fractures that transect these zones must be identified.

020-24 Wyo. Code R. § 24-7

Amended, Eff. 7/25/2016.