Models of Injection‐Induced Aseismic Slip on Height‐Bounded Faults in the Delaware Basin Constrain Fault‐Zone Pore Pressure Changes and Permeability

Inversions of InSAR ground deformation in the Delaware Basin have revealed an aseismic slip on semi-optimally oriented normal faults located close to disposal wells. The slip, occurring over 3–5 years, extends approximately 1 km down-dip, 10 along strike, and reaches 25 cm. We develop calibrate 2D pseudo-3D coupled pore pressure diffusion rate-state models with velocity-strengthening friction tailored this unique height-bounded fault geometry. Pressure is limited a high-permeability damage zone, net influx fluid adjusted match observed slip. A 1–2 MPa increase initiates ∼5 additional required produce ∼20 cm Most occurs at constant friction. Fault zone permeability must exceed ∼10−13 m2 along-strike extent Models type developed here can be used operationally manage injection-induced