Platforms and rigs evacuated as Tropical Depression 9 builds

AUGUST 29, 2016 — Offshore oil and gas operators in the Gulf of Mexico are evacuating platforms and rigs in the path of Tropical Depression No. 9.

The Bureau of Safety and Environmental Enforcement (BSEE) Hurricane Response Team has been activated and is monitoring the operators' activities. The team will continue to work with offshore operators and other state and federal agencies until operations return to normal and the storm is no longer a threat to Gulf of Mexico oil and gas activities.

Based on data from offshore operator reports submitted as of 11:30 a.m. CDT today, personnel have been evacuated from a total of six production platforms, equivalent to less than one percent (0.77 percent) of the 781 manned platforms in the Gulf of Mexico.

Personnel have been evacuated from one rnon-dynamically positioned (DP) rig equivalent to 6.25 percent of the 16 rigs of this type currently operating in the Gulf.

A total of five DP rigs have moved off location out of the storm's path as a precaution. This number represents 20.00 percent of the 25 DP rigs currently operating in the Gulf.

DP rigs maintain their location while conducting well operations by using thrusters and propellers, the rigs are not moored to the seafloor; therefore, they can move off location in a relatively short time-frame. Personnel remain on-board and return to the location once the storm has passed.

As part of the evacuation process, personnel activate the applicable shut-in procedure, which can frequently be accomplished from a remote location. This involves closing the sub-surface safety valves located below the surface of the ocean floor to prevent the release of oil or gas. During previous hurricane seasons, the shut-in valves functioned 100 percent of the time, efficiently shutting in production from wells on the Outer Continental Shelf and protecting the marine and coastal environments. Shutting-in oil and gas production is a standard procedure conducted by industry for safety and environmental reasons.

From operator reports, it is estimated that approximately 11.48 percent of the current oil production in the Gulf of Mexico has been shut-in. It is also estimated that approximately 5.51 percent of the natural gas production in the Gulf of Mexico has been shut-in.

Shut-in production information included in these reports is based on the amount of oil and gas the operator expected to produce that day and therefore are estimates, which BSEE compares to historical production reports to ensure the estimates follow a logical pattern.

After the storm has passed, facilities will be inspected. Once all standard checks have been completed, production from undamaged facilities will be brought back on line immediately. Facilities sustaining damage may take longer to bring back on line.

BSEE will continue to update the evacuation and shut-in statistics at 1:00 p.m. CDT each day as appropriate.

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