30 CFR § 250.523 - When do I have to repeat casing diagnostic testing?

---
identifier: "/us/cfr/t30/s250.523"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 250.523 - When do I have to repeat casing diagnostic testing?"
title_number: 30
title_name: "Mineral Resources"
section_number: "250.523"
section_name: "When do I have to repeat casing diagnostic testing?"
chapter_name: "BUREAU OF SAFETY AND ENVIRONMENTAL ENFORCEMENT, DEPARTMENT OF THE INTERIOR"
subchapter_number: "B"
subchapter_name: "OFFSHORE"
part_number: "250"
part_name: "OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 1751, 31 U.S.C. 9701, 33 U.S.C. 1321(j)(1)(C), 43 U.S.C. 1334."
regulatory_source: "76 FR 64462, Oct. 18, 2011, unless otherwise noted."
cfr_part: "250"
---


# 250.523 When do I have to repeat casing diagnostic testing?

Casing diagnostic testing must be repeated according to the following table:

| When . . . | you must repeat diagnostic testing . . . |
| --- | --- |
| (a) your casing pressure request approved term has expired, | immediately. |
| (b) your well, previously on gas lift, has been shut-in or returned to flowing status without gas lift for more than 180 days, | immediately on the production casing (A annulus). The production casing (A annulus) of wells on active gas lift are exempt from diagnostic testing. |
| (c) your casing pressure request becomes invalid, | within 30 days. |
| (d) a casing or riser has an increase in pressure greater than 200 psig over the previous casing diagnostic test, | within 30 days. |
| (e) after any corrective action has been taken to remediate undesirable casing pressure, either as a result of a casing pressure request denial or any other action, | within 30 days. |
| (f) your fixed platform well production casing (A annulus) has pressure exceeding 10 percent of its minimum internal yield pressure (MIYP), except for production casings on active gas lift, | once per year, not to exceed 12 months between tests. |
| (g) your fixed platform well's outer casing (B, C, D,  annuli) has a pressure exceeding 20 percent of its MIYP, | once every 5 years, at a minimum. |

[76 FR 64462, Oct. 18, 2011. Redesignated at 77 FR 50894, Aug. 22, 2012]