Fatalities in the Oil and Gas Extraction Industry (FOG)
Key FOG Variable Descriptions
The FOG database collects several different types of information (i.e., variables) on each fatal incident and each worker who died in the incident. Variables about the incident are those that would be common to all fatalities associated with the incident, such as the date the event occurred and the location of the incident. Other variables are specific to each fatally injured worker, such as the worker’s age, years of experience, and cause of the fatality.
Below are the definitions for key FOG variables; these are the most commonly reported variables in FOG datasets, publications, and products.
Worker level variables: Industry Group
In FOG, the industry group is determined by the North American Industry Classification System (NAICS)external icon code of the employer. A company’s NAICS code is based on its primary business.
FOG includes worker fatalities related to U.S. oil and gas extraction (”upstream” sector of the oil and gas industry), which involves the exploration for crude oil or natural gas fields and the drilling and operating of wells that bring crude oil or natural gas to the surface (see Inclusion Criteria for more information). The oil and gas extraction industry is described by NAICS codes 211, 213111, and 213112 (see Oil and gas extraction industry groups below for full NAICS descriptions). However, employers from other industries (i.e., other NAICS codes) also often conduct oil and gas extraction work as contractors. Fatalities resulting from oil and gas extraction activities conducted by these contractors are also included in FOG. These industry groups predominantly include NAICS codes 2389, 4842, 5324, 54324 (see Examples of other industry groups that do work in oil and gas extraction below for full NAICS descriptions). Each fatality in FOG is assigned to one industry group.
Industries in the Oil and Gas Extraction subsector operate and/or develop oil and gas field properties. Such activities may include exploration for crude petroleum and natural gas; drilling, completing, and equipping wells; operating separators, emulsion breakers, desilting equipment, and field gathering lines for crude petroleum and natural gas; and all other activities in the preparation of oil and gas up to the point of shipment from the producing property. This subsector includes the production of crude petroleum, the mining and extraction of oil from oil shale and oil sands, the production of natural gas, sulfur recovery from natural gas, and recovery of hydrocarbon liquids.
Drilling company (NAICS 213111):
This U.S. industry comprises establishments primarily engaged in drilling oil and gas wells for others on a contract or fee basis. This industry includes contractors that specialize in spudding in, drilling in, redrilling, and directional drilling.
Servicing company (NAICS 213112):
This U.S. industry comprises establishments primarily engaged in performing support activities on a contract or fee basis for oil and gas operations (except site preparation and related construction activities). Services included are exploration (except geophysical surveying and mapping); excavating slush pits and cellars, well surveying; running, cutting, and pulling casings, tubes, and rods; cementing wells, shooting wells; perforating well casings; acidizing and chemically treating wells; and cleaning out, bailing, and swabbing wells.
This industry group comprises establishments primarily engaged in specialized trades (except foundation, structure, and building exterior contractors; building equipment contractors; building finishing contractors; and site preparation contractors). The specialty trade work performed includes new work, additions, alterations, maintenance, and repairs. In the oil and gas extraction industry, these companies are typically involved in the initial site preparation and other site construction activities for oil and gas wells.
Specialized freight company (NAICS 4842):
This industry group comprises establishments primarily engaged in providing local or long-distance specialized freight trucking. The establishments of this industry are primarily engaged in the transportation of freight, which, because of size, weight, shape, or other inherent characteristics, requires specialized equipment, such as flatbeds, tankers, or refrigerated trailers. In the oil and gas extraction industry, these companies are typically involved in hauling fluids (crude oil, production water, etc.) to and from oil and gas wellsites.
Commercial and industrial machinery and equipment rental and leasing company (NAICS 5324):
This industry group comprises establishments primarily engaged in renting or leasing commercial-type and industrial-type machinery and equipment. Establishments included in this industry group are generally involved in providing capital or investment-type equipment that clients use in their business operations. These establishments typically cater to a business clientele and do not generally operate a retail-like or storefront facility.
Geophysical surveying and mapping company (NAICS 541360):
This industry comprises establishments primarily engaged in gathering, interpreting, and mapping geophysical data. Establishments in this industry often specialize in locating and measuring the extent of subsurface resources, such as oil, gas, and minerals, but they may also conduct surveys for engineering purposes. Establishments in this industry use a variety of surveying techniques depending on the purpose of the survey, including magnetic surveys, gravity surveys, seismic surveys, or electrical and electromagnetic surveys.