Texas Oilfield Company and Executive Plead Guilty in Hydrogen Sulfide Deaths

Permian Basin oilfield worker Jacob Dean and his wife, Natalee, suffered fatal hydrogen sulfide exposure at a work site. Two companies entered guilty pleas and will pay $1.4 million in fines.

By Martha Pskowski  insideclimatenews.org  April 16, 2025

Aghorn Operating Inc., a Texas oilfield company, and its vice president pleaded guilty Tuesday to criminal charges resulting from the death of a worker and his wife in 2019 near Odessa. 

Aghorn will pay $1 million in fines and a services company, Kodiak Roustabout Inc., will pay an additional $400,000. Aghorn vice president Trent Day was sentenced to five months in prison.

The charges in United States v. Aghorn Operating, Inc. stemmed from the Oct. 26, 2019 incident at an Aghorn facility in the Permian Basin. Monitors for hydrogen sulfide, an invisible gas found in some oil reserves, were not working when Jacob Dean responded to an alarm to check a pump. Dean was exposed to fatal levels of the gas. His wife, Natalee Dean, then entered the facility looking for him and was also killed by hydrogen sulfide exposure.

Aghorn pleaded guilty this week to Clean Air Act negligent endangerment charges and an Occupational Safety and Health Act willful violation count. Day pleaded guilty to negligent endangerment charges. Kodiak Roustabout Inc. pleaded guilty to felony violation of the Safe Drinking Water Act for falsifying oil well integrity tests. Other pending charges will be dismissed as part of the plea agreements.

Exposure to hydrogen sulfide is among the leading causes of workplace gas inhalation deaths in the United States. Texas companies tapping into oil and gas reserves are required to test their gas for hydrogen sulfide and follow safety standards depending on the gas composition. Nonetheless, several oilfield deaths from hydrogen sulfide exposure, in addition to the Deans, have been reported in recent years. Another oilfield worker died in September 2022 after inhaling hydrogen sulfide while working in proximity to a sump pit near the Permian Basin town of Orla, Texas.

“Operators who gravely endanger and kill others and those who lie to the government will be held accountable for their criminal conduct,” said Jeffrey Hall, assistant administrator of the Environmental Protection Agency’s Office of Enforcement and Compliance Assurance. “EPA’s criminal investigation of these tragic deaths led to today’s plea deal.”

Aghorn Operating declined to comment.

Persistent Safety Threat to Oilfield Workers

In Texas hydrogen sulfide, also known as sour gas, is regulated by both the Railroad Commission of Texas, under Statewide Rule 36, and the Texas Commission on Environmental Quality. Drill sites with high levels of the gas are required to post signage, install alarms and require workers to wear monitors. Exposure to sour gas is one of several workplace hazards in the oilfields, in addition to vehicle incidents, contact injuries and explosions.

Railroad Commission spokesperson Bryce Dubee said the agency took its own enforcement action against Aghorn. “Our dedicated inspectors conduct inspections daily at oil and gas facilities throughout the state, and if there are violations of Rule 36 they are inspected until addressed and compliance has been met,” he said.