EDRC Update
John Caplis
BSEE Oil Spill Response Division
SCAA Annual Meeting
Progress Report
EDRC Workshop @ International Oil Spill
Conference May 2011
Genwest Study completed Dec 2012
National Academy of Science Peer
Review completed Nov 2013
System-based Recovery
&
Encounter Rate
Enhanced Swath
Open Apex
Skimmer,
Pump &
Storage
Secondary
Backup” Storage
Nominal “THICK” Oil Thicknesses
After 12 hours
After 36 hours
After 60 hours
(mid-day 1)
(mid-day 2)
(mid-day 3)
2.5 mm
1.0mm
0.6 mm
System Areal Coverage Rate = ƒ (swath, speed, skimming time )
Oil Encounter Rate
Day 1 (bbl/hr) Day 2 (bbl/hr) Day 3 (bbl/hr)
System Recovery = ƒ (RE, TE, NPRR, Pump Rates, etc)
Estimated Recovery System Potential
(For each day’s Operating Window)
Day 1 (bbl)
Day 2 (bbl)
Day 3 (bbl)
ERSP System Variables
ERSP Calculator
• Nameplate
Swath
& Speed
• Oil Thickness
• % Emulsion
Recovery Rate
• Recovery
Efficiency
• Throughput
Efficiency
Concentrate &
Collect Oil
Recover Oil
• System
• Onboard
Storage
• % Decant
• Decant Pump Rate
Store Oil
(on Skimmer)
• Transit
Time
• Rig/Derig Time
• Discharge Pump Rate
Transit &
Transfer Oil
NAS Peer Review
ERSP Methodology sound
Use ASTM 2709-08 for Nameplate Rates
Consider different planning scenarios
Consider patchiness of thick oil
Develop more detailed user guide
Consider all response options
ERSP Strengths
Incentives for better performance
Looks at whole system
Factors in encounter rate issues
Emphasizes rapid response
Well suited for offshore equipment
ERSP Challenges
Assumes best practices for oil spotting
Guidance needed on input values
Mobilization & transit to spill not
included
Maneuverability not factored in
Nearshore requirements not addressed
Not suited for inland environment
ERSP Beta Testing
OSRB (Barge)
OSRB (Barge)
OSRV
OSRV
95 ‘ OSRV
Koseq Arms
Shallow Water Barge
Shallow Water Barge
46 ‘ OSRV
VOSS Unit
ERSP Next Steps
Continue beta testing dialogue with
industry
Address NAS Report Recommendations
OSRP Equipment Requirements Study
Possible Public Workshop once Study is
completed
Websites:
www.bsee.gov
www.genwest.com/edrcproject
www.nap.edu/catalog.php?record_id=18579