Arctic Facilities Design and Operation

The following information is an extract from PEW recommendations on Arctic Oil Spill Prevention, Response, and Safety in the U.S. Arctic Ocean published during September 2013. Once exploration drilling is complete and sufficient oil and/or gas resources are found to support year-round production, a more permanent offshore production facility may be installed with a pipeline connecting it to shore. Offshore production facilities typically include development drilling operations, wellheads, processing facilities, storage, and living quarters.

2013.12.04 - Arctic Facilities Design and Operation Figure 1

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Drilling Rig Anchoring Failure Incident Information

A few months ago PSA issued a new journal providing valuable information on some of the most relevant issues and challenges that are being faced by the oil & gas industry in the field of safety. The following information is an extract from PSA’s journal “Dialogue” regarding a mooring incident on the drilling rig Ocean Vanguard in 2004.

2013.11.20 - Drilling Rig Anchoring Failure Incident Information

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Blowout and Consequent Fire onboard Offshore Platform – Investigation Report

This investigation report refers to an accident that took place during an attempt to weld the casing head of a slip-on wellhead, gas flow was noticed coming from the +10 valve. Later, unsuccessful attempts were made to stop the flow, which was then coming from the drive pipe/surface casing annular region. The gas flow eventually ignited and caused extensive damage to the platform. The well bridged over and kill operations were completed successfully and fortunately there were no injuries.

2013.11.18 - Blowout and Consequent Fire onboard Offshore Platform - Investigation Report Figure 1

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Enclosed Space Flash Explosion Onboard Offshore Platform – Investigation Report

This incident information refers to an accident that occurred onboard an offshore platform in the Gulf of Mexico during maintenance and repair operations to clean several production vessels, including a high-pressure separator, the floatation cell, the wet-oil tank, and two stacked low-pressure separators, upper and lower. A flash fire ignited within one of the vessel’s causing injuries to four crew members.

2013.11.04 - Enclosed Space Flash Explosion Onboard Offshore Platform - Investigation Report Figure 1

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Ultra Deepwater Drilling Rig Scarabeo 9

How to Install an Offshore Wind Turbine

The Piper Alpha Disaster

Prirazlomnaya Platform Greenpeace Incident

During last month (September 18), Greenpeace’s Arctic Sunrise approached the Prirazlomnaya offshore oil drilling platform and Greenpeace activists onboard the vessel attempted to board the facility. Their aim was to protest onboard the Prirazlomnaya platform in order to draw attention to the issue of the expansion of oil and gas exploration in the Arctic Ocean. Their efforts were stopped by the border guards and their vessel was taken in tow to Murmansk port.  A total of 30 crewmembers were detained.

2013.10.07 - Prirazlomnaya Platform Greenpeace Incident

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Hydrocarbon Leak on Offshore Platform Due to Deficient Valve – Investigation Report

This incident investigation report refers to a hydrocarbon leak occurred September 2008 on Statoil Hydro’s Oseberg C  installation. This leak occurred in the production manifold area. The initial escape was estimated at 26 kilograms per second. The immediate cause was a sudden and unintended opening of the test manifold valve leading to the unpressurised test manifold. The consequent pressure shock tore off a two-inch pressure equalisation pipe between the test and production manifolds. The direct cause of the pressure shock was the rapid opening of a well to the unpressurised test manifold. The fail-safe position of the activated control block opened the valve, while the deactivated one closed the valve in its fail-safe position. That meant a rapid and unintended opening of the valve when hydraulic fluid was introduced to the control block. The total hydrocarbon volume was estimated at 1,500 kg. No people were injured and material damage was slight.

2013.09.16 - Hydrocarbon Leak on Offshore Platform Due to Deficient Valve - Investigation Report Figure 1

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Offshore Oil Drilling Explained