Abstract
Explosions and fire have very critical safety hazard impacts on offshore oil and gas facilities since they are mostly located in remote areas and could induce serious environmental issues. Explosion risk assessment and structure blast analysis are essential for these production facilities, and research studies have been carried out. Explosion due to blowout during drilling operation is also a critical risk for drilling units, and this has not been researched much until the accident of the drilling unit in the Gulf of Mexico in 2010. This paper provides the risk and evaluation of explosion and structure under blast pressure during the drilling operation, whereas previous research studies have mainly been interested in process plants. This study suggests weight saving in drilling units through the consideration of the actual behavior of gas explosion. Weight saving is the priority of offshore unit design due to payload. This research also gives guidelines to select the material-grade-appropriate anti-explosion system through the comparison of several materials by design and result.
Highlights
Research studies have been carried out on fires and explosions caused by oil and gas leakage in Floating Production Storage Offloading (FPSO) as an offshore facility [1,2,3,4,5]
This study contributes to the investigation of the structure response of the drill floor of a drilling unit and suggests a new approach for blast pressure application based on the observation of blast pressure propagation
The difference in displacement according to the material is not expected
Summary
Research studies have been carried out on fires and explosions caused by oil and gas leakage in Floating Production Storage Offloading (FPSO) as an offshore facility [1,2,3,4,5]. The drilling operation is essential for oil and gas production, and there are risks from accidental blowout as well as from induced fire and explosion. Only a few studies on explosions and fire related to drilling have been reported [6], and no observations of the structural response of the drilling unit have been made when experiencing an explosion. This is the reason why this study focuses on the drill floor. This study contributes to the investigation of the structure response of the drill floor of a drilling unit and suggests a new approach for blast pressure application based on the observation of blast pressure propagation. The drill pipe is connected to the drill hole in a seabed from the top drive on a drill floor, and the oil and gas mixture can be blown out in the case of failure in the Blowout
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