The Macondo Oil Field Disaster

2011 ◽  
Vol 6 (5) ◽  
pp. 482-485 ◽  
Author(s):  
Michael C. Lynch ◽  

TheMacondo oil rig explosion and subsequent oil spill was the worst disaster in the US offshore oil industry since 1969. Although some worried that it reflected the greater challenges of deepwater drilling for which the industry was not prepared, investigations have shown that a variety of decisions made, primarily during the drilling of the well, caused the blowout and explosion. Apparently, a corporate culture of cost cutting led to many of these decisions, and it suggests that human failures, both in senior levels where culture is set, and at the lower levels where it affects operations, are the primary challenges that need to be overcome to reduce the likelihood of future disaster.

2021 ◽  
Vol 51 (1) ◽  
pp. 94-97
Author(s):  
Ajit C Kulkarni ◽  

In the offshore oil industry, Multipurpose Support Vessels with extensive diving capability are used for inspection, maintenance and repair of subsea pipelines. The diving industry has developed systemic safety checks and strict regulatory control after a number of fatal accidents in early years. However, accidents do continue to occur and, when involving divers in the water, are often fatal. Hydrogen sulphide (H2S), called ‘sour gas’ in an oil field, is produced by the action of anaerobic bacteria on sulphate containing organic matter. A highly toxic gas, it remains a constant danger for offshore oil industry workers who must remain vigilant. Crude oil and gas produced in these oilfields is called ‘sour crude’ and pipelines carry this crude with varying content of dissolved H2S to shore for processing. Divers are routinely called to attend to leaking pipelines and come in contact with this crude. Their hot water suits and umbilical lines are often covered with crude containing dissolved H2S. There is always a possibility that these may enter and contaminate the bell environment. Such a case leading to fatality is reported here.


2021 ◽  
Vol 51 (1) ◽  
pp. 94-97
Author(s):  
Ajit C Kulkarni ◽  

In the offshore oil industry, Multipurpose Support Vessels with extensive diving capability are used for inspection, maintenance and repair of subsea pipelines. The diving industry has developed systemic safety checks and strict regulatory control after a number of fatal accidents in early years. However, accidents do continue to occur and, when involving divers in the water, are often fatal. Hydrogen sulphide (H2S), called ‘sour gas’ in an oil field, is produced by the action of anaerobic bacteria on sulphate containing organic matter. A highly toxic gas, it remains a constant danger for offshore oil industry workers who must remain vigilant. Crude oil and gas produced in these oilfields is called ‘sour crude’ and pipelines carry this crude with varying content of dissolved H2S to shore for processing. Divers are routinely called to attend to leaking pipelines and come in contact with this crude. Their hot water suits and umbilical lines are often covered with crude containing dissolved H2S. There is always a possibility that these may enter and contaminate the bell environment. Such a case leading to fatality is reported here.


2007 ◽  
Vol 57 (4) ◽  
pp. 254-261 ◽  
Author(s):  
J. A. S. Ross ◽  
J. I. Macdiarmid ◽  
L. M. Osman ◽  
S. J. Watt ◽  
D. J. Godden ◽  
...  

1971 ◽  
Vol 8 (01) ◽  
pp. 8-12
Author(s):  
M. G. Krutein ◽  
J. A. Reed

More than a decade ago, oil drillers and naval architects started to use vessels instead of fixed structures for offshore drilling. A multitude of novel platform concepts were developed which allowed the tremendous spreading of offshore oil activities. Today, search for oil spreads into areas of greater depth and farther away from the shores. This requires new developments of technology over a broad spectrum. The latest concepts of underwater oil production systems are briefly described.


1980 ◽  
Vol 102 (2) ◽  
pp. 106-111
Author(s):  
W. R. Wolfram ◽  
R. H. Gunderson

Offshore production terminals and deepwater risers are seeing increasing use by the offshore oil industry. The structural design of these units presents a unique challenge compared to other offshore systems. Development of design loading conditions and fatigue histories is especially interesting due to the complex interaction of nonlinear riser and vessel dynamics, the statistical nature of maximum loads and the need to consider directionality as well as the magnitude of environmental loading. This paper presents a complete procedure for predicting design loads and fatigue histories for production risers and offshore terminals. The emphasis will be on systems wherein a dedicated vessel is connected to the riser by a rigid mooring arm. A number of structural design configurations will be surveyed. Techniques for preliminary sizing, dynamic analysis, model testing and fatigue analysis will be discussed. The application of this procedure to several specific design cases will be summarized.


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