40 CFR 147.1153 - Existing Class II disposal wells authorized by rule in Indian country.

Regulations most recently checked for updates: Aug 27, 2025

§ 147.1153 - Existing Class II disposal wells authorized by rule in Indian country.

The owner or operator shall limit injection pressure to the lesser of:

(a) A value which will not exceed the operating requirements of § 144.28(f)(3)(i) or (ii) of this chapter as applicable; or

(b) A value for well head pressure calculated by using the following formula:

Pm = (0.800−0.433 Sg)d

Where:

Pm = injection pressure at the well head in pounds per square inch.

Sg = specific gravity of injected fluid (unitless).

d = injection depth in feet.

[87 FR 45256, July 28, 2022]