147.753—Existing Class I and III wells authorized by rule.
Maximum injection pressure. The owner or operator shall limit injection pressure to the lessor of:
(a)
A value which will not exceed the operating requirements of § 144.28(f)(3) (i) or (ii) as applicable; or
Pm=(0.800-0.433 Sg)d
where:
Pm=injection pressure at the wellhead in pounds per square inch
Sg=specific gravity of injected fluid (unitless)
d=injection depth in feet.