Section 250.531 - When does my casing pressure request approval become invalid?A casing pressure request becomes invalid when:
(a) The casing or riser pressure increases by 200 psig over the approved casing pressure request pressure;(b) The approved term ends;(c) The well is worked-over, side-tracked, redrilled, recompleted, or acid stimulated;(d) A different casing or riser on the same well requires a casing pressure request; or(e) A well has more than one casing operating under a casing pressure request and one of the casing pressure requests become invalid, then all casing pressure requests for that well become invalid.76 FR 64462, Oct. 18, 2011. Redesignated at 77 FR 50894, Aug. 22, 2012