Definition(s)
Hydrogen sulfide
Chemical formula is H2S. A flammable, toxic gas that is heavier than air and sometimes found in fluids encountered in oil and gas producing and gas processing operations.
Source: API RP 49, Recommended Practice for Drilling and Well Servicing Operations Involving Hydrogen Sulfide, Third Edition, May 2001. Global Standards
Hydrogen sulfide (H2S)
A highly toxic, flammable, corrosive gas sometimes encountered in hydrocarbon bearing formations.
Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards
Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards
Hydrogen Sulfide (H2S)
A highly toxic, flammable corrosive gas sometimes encountered in hydrocarbon bearing formations.
Source: API RP 64, Recommended Practice for Diverter Systems Equipment and Operations, Second Edition, November 2001 (March 1, 2007). Global Standards
Hydrogen Sulfide (H2S)
Colorless, flammable, extremely hazardous gas with a “rotten egg” smell that occurs naturally in crude petroleum, natural gas, and hot springs and is produced by bacterial breakdown of organic materials and human and animal wastes (e.g. sewage).
NOTE 1 Some common names for the gas include sewer gas, stink damp, swamp gas, and manure gas.
NOTE 2 Industrial activities that can produce the gas include petroleum/natural gas drilling and refining, wastewater treatment, coke ovens, tanneries, and paper mills. Hydrogen sulfide can also exist as a liquid compressed gas.
Source: API RP 98, Personal Protective Equipment Selection for Oil Spill Responders, First Edition, August 2013. Global Standards