---
kind: "section"
citation: "30 C.F.R. § 250.601"
title: "30"
number: "250.601"
heading: "Definitions."
url: "https://uscodex.org/cfr/30/250.601"
---

# §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.

## Notes

### Amendments

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

### Authority

Authority: 30 U.S.C. 1751, 31 U.S.C. 9701, 33 U.S.C. 1321(j)(1)(C), 43 U.S.C. 1334.

### Source

Source: 76 FR 64462, Oct. 18, 2011, unless otherwise noted.

### Amendments

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