# 30 CFR § 250.504: Hydrogen sulfide

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-30-250.504

## Section

- **Citation:** 30 CFR § 250.504
- **Heading:** Hydrogen sulfide
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 30—Mineral Resources > CHAPTER II—BUREAU OF SAFETY AND ENVIRONMENTAL ENFORCEMENT, DEPARTMENT OF THE INTERIOR > SUBCHAPTER B—OFFSHORE > PART 250—OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF > Subpart E—Oil and Gas Well-Completion Operations

## Text

When a well-completion operation is conducted in zones known to contain hydrogen sulfide (H2S) or in zones where the presence of H2S is unknown (as defined in § 250.490 of this part), the lessee shall take appropriate precautions to protect life and property on the platform or completion unit, including, but not limited to operations such as blowing the well down, dismantling wellhead equipment and flow lines, circulating the well, swabbing, and pulling tubing, pumps, and packers. The lessee shall comply with the requirements in § 250.490 of this part as well as the appropriate requirements of this subpart.

## Nearby sections

- [30 CFR § 250.300 § 250.300 Pollution prevention.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.300.md)
- [30 CFR § 250.301 § 250.301 Inspection of facilities.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.301.md)
- [30 CFR § 250.500 § 250.500 General requirements.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.500.md)
- [30 CFR § 250.501 § 250.501 Definition.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.501.md)
- [30 CFR § 250.503 § 250.503 Emergency shutdown system.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.503.md)
- [30 CFR § 250.504 § 250.504 Hydrogen sulfide.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.504.md)
- [30 CFR § 250.505 § 250.505 Subsea completions.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.505.md)
- [30 CFR § 250.509 § 250.509 Well-completion structures on fixed platforms.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.509.md)
- [30 CFR § 250.510 § 250.510 Diesel engine air intakes.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.510.md)
- [30 CFR § 250.511 § 250.511 Traveling-block safety device.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.511.md)
- [30 CFR § 250.512 § 250.512 Field well-completion rules.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.512.md)
- [30 CFR § 250.513 § 250.513 Approval and reporting of well-completion operations.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.513.md)
- [30 CFR § 250.514 § 250.514 Well-control fluids, equipment, and operations.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.514.md)
- [30 CFR § 250.518 § 250.518 Tubing and wellhead equipment.](https://www.frixlaw.com/law-library/statutes/ecfr-30-250.518.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-30-250.504. Check the current official text before relying on it. Not legal advice.