40 CFR 147.1803 - Existing Class I and III wells authorized by rule

Regulations most recently checked for updates: Aug 27, 2025

§ 147.1803 - Existing Class I and III wells authorized by rule—maximum injection pressure.

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

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

Pm = (0.8 − 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.

[49 FR 45308, Nov. 15, 1984]