The Bureau of Safety and Environmental Enforcement (BSEE) on 9 March released the panel investigation report on the 11 May 2016 subsea jumper leak on a platform operated by Shell Offshore. The leak from Green Canyon Block 248 occurred on Subsea Well 4, resulting in an estimated release of 1,926 bbl of oil.
The BSEE investigation panel concluded that the loss of containment in the Glider subsea system was caused by the ductile/tensile overload fracture of the load-limiting joint of the Glider 4 jumper. The ductile/tensile overload fracture was caused by the bending loads imposed as a result of the partial burial of the Glider 4 jumper and subsequent subsiding of Subsea Sled 2.
The panel recommends that, when drilling the riserless portion of a subsea well in the vicinity of other subsea infrastructure (i.e., pipelines, sleds, subsea wells), operators need to ensure the resulting drill cuttings and cement are not adversely affecting or posing additional risks to existing subsea infrastructure.
Find the report here (PDF).
Find the safety alert here (PDF).
Don't miss our latest HSE content, delivered to your inbox twice monthly. Sign up for the HSE Now newsletter. If you are not logged in, you will receive a confirmation email that you will need to click on to confirm you want to receive the newsletter.
17 Mar 2020
- Calgary, Alberta, Canada
In this course, discover the field applications of machine learning with a focus on reservoir characterization, production analysis and prediction, and recovery enhancement.
19 - 20 Feb 2020
- Lafayette, Louisiana, USA
Covering issues related to the identification, prevention, and remediation of formation damage
29 Jan 2020 22:30 GMT
- Live, then On Demand
9 - 11 Mar 2020
- Muscat, Oman
Shaping the Future of the Energy Industry.
22 Apr 2020
- Bergen, Norway
The SPE Norway Subsurface Conference brings together the E&P industry to expand industry technical knowledge, connect with innovators and leaders and address technical challenges facing upstream oil and gas professionals.
29 - 30 Apr 2020
- Brisbane, Australia
We are in the throes of an energy transition - our energy system is evolving rapidly and diversifying, decarbonising and decentralising.
HSE Now is a source for news and technical information affecting the health, safety, security, environment, and social responsibility discipline of the upstream oil and gas industry.
©2003-2020 Society of Petroleum Engineers, All Rights Reserved.