40 CFR 147.1803 - Existing Class I and III wells authorized by rule - maximum injection pressure.
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§ 147.1803 Existing Class I and III wells authorized by rule - maximum injection pressure.
(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
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]