40 CFR 147.503 - Existing Class II (except enhanced recovery and hydrocarbon storage) wells authorized by rule.
Maximum injection pressure. To meet the operating requirements of § 144.28(f)(3)(i) of this chapter, the owner or operator shall use an injection pressure at the well head no greater than the pressure calculated using the following formula:
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 45306, Nov. 15, 1984]
Title 40 published on 2014-07-01
no entries appear in the Federal Register after this date.