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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 14392286 - Four Killed, One Injured In Explosion On Gas Drilling Rig

Accident: 14392286 -- Report ID: 0625700 -- Event Date: 06/17/1997
InspectionOpen DateSICEstablishment Name
30039650406/19/19971381Mallard Bay Drilling, Inc.
Employees #1 through #5 were crew members on a barge-mounted drilling rig in the Atchafalaya Basin off southern Louisiana. They were attempting to complete a natural gas well that had been drilled, cased, and perforated when wellhead control was lost because of mechanical problems both down the well bore and at the surface on the rig floor. Drilling mud and natural gas spewed from the drill pipe to a height of 30 ft above the rig floor and also one level down at the shale shaker and mud tanks. When the gas contacted an ignition source, it exploded and the well caught fire. Employees #1 and #3 were at the shale shaker and Employees #2 and #4 were standing behind a bulkhead on the second level, 100 ft from the well; all four were killed instantly by the force of the explosion. Employee #5 was injured when a piece of grating landed on him on the deck of the crew boat.
Keywords: flammable vapors, fire, natural gas, explosion, struck by, wellhead, gas well drilling, accidental discharge, mech malfunction
Employee # Inspection Age Sex Degree Nature Occupation
1 300396504 Fatality Concussion Occupation not reported
2 300396504 Fatality Concussion Occupation not reported
3 300396504 Hospitalized injury Fracture Occupation not reported
4 300396504 Fatality Concussion Occupation not reported
5 300396504 Fatality Concussion Occupation not reported

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