30 CFR § 250.601 - Definitions.

---
identifier: "/us/cfr/t30/s250.601"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 250.601 - Definitions."
title_number: 30
title_name: "Mineral Resources"
section_number: "250.601"
section_name: "Definitions."
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: "2026-03-24"
last_updated: "2026-03-24"
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"
---


# 250.601 Definitions.

When used in this subpart, the following terms shall have the meanings given below:

*Expected surface pressure* means the highest pressure predicted to be exerted upon the surface of a well. In calculating expected surface pressure, you must consider reservoir pressure as well as applied surface pressure.

*Routine operations* mean any of the following operations conducted on a well with the tree installed:

(a) Cutting paraffin;

(b) Removing and setting pump-through-type tubing plugs, gas-lift valves, and subsurface safety valves which can be removed by wireline operations;

(c) Bailing sand;

(d) Pressure surveys;

(e) Swabbing;

(f) Scale or corrosion treatment;

(g) Caliper and gauge surveys;

(h) Corrosion inhibitor treatment;

(i) Removing or replacing subsurface pumps;

(j) Through-tubing logging (diagnostics);

(k) Wireline fishing; and

(l) Setting and retrieving other subsurface flow-control devices.

(m) Acid treatments.

*Workover operations* mean the work conducted on wells after the initial completion for the purpose of maintaining or restoring the productivity of a well.

[76 FR 64462, Oct. 18, 2011, as amended at 84 FR 21976, May 15, 2019]