§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=(0.733−0.433 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 45306, Nov. 15, 1984]