Upload
others
View
1
Download
0
Embed Size (px)
Citation preview
Use of Remote Sensing radar techniques for Oil and Gas (O&G) facilities survey in offshore domain for Environment and Exploration: Oil slicks detection and interpretation (Seeps and Spill)
V. Miegebielle(1), D. Dubucq12) and S. Angelliaume(2)
(1) TOTAL, France (2) ONERA (The French Aerospace Lab), Electromagnetism and Radar Department, France
Airborne and spaceborne radar remote sensing means are used in an operational context for oil slicks detection. Indeed, the oil layer above the surface of the sea will damped the so-called “capillarity waves“ which are the origin of the sea surface roughness. The objective of this paper is to present Remote Sensing Technologies and methodologies developed within Total to detect and cope oil slicks issues in the off shore domain. , in collaboration with ONERA The works realized in this domain will be presented through ‘field cases’ as well as R&D results, related to the emergence of new techniques, made in collaboration with the ONERA. We work in particular on the evaluation of the most relevant polarimetric parameters for slicks detection and characterization. We are also interested in the use of the various radar frequencies (X, L Bands…) for the detection, characterization and the estimation of relative thickness. Finally, in case of significant leakage, we will present ‘Spill Watch’, the internal procedure, activated to follow and to predict oil slick drift to determine areas where antipollution teams must intercede.
The availability of numerous data images, in particular ESA Sentinel-1 A and Sentinel 1-B satellite data, free access data, open new perspectives in monitoring field.
The need for the oversight of our operations and the surveillance of our installations can be now covered with an important repetitiveness thanks to the high frequency of acquisitions of this new type of data as a complement to commercial data (Cosmo SkyMed, Radarsat, TerraSarX…) programmed and acquired by SAR operators. Today, the possibility of daily satellite acquisition in any defined area of the word thanks to satellite constellations, allows to set up a systematic oil production facilities monitoring for:
- Detecting hydrocarbon leaks and their recurrence (rejecting look alike such as algal blooming wind and current effects…)
- Locate the source of the slick relative to the location of O&G infrastructures - Identify and discriminate possible origins of the slicks : natural seeps, spill linked to oil
facilities, boat emptying of fuel tanks - Evaluate leak magnitude and their evolution with time (drifting)
The teams need constant refinement of these tools because of the importance of the issue and the support for Environment and Exploration domains. A major research program has been initiated to improved reliability of detection methods, discrimination and why not quantification… of oil slicks including SAR and optical technologies and calibration on real data and software development.
Paper No.184419-MS
Use of Remote Sensing Radar Techniques for Oil and Gas (O&G)
Facilities Survey in Offshore Domain for Environment and Exploration: Oil
Slicks Detection and Interpretation (Seeps and Spill)
V. Miegebielle*, C. Taillandier*, D. Dubucq*, S. Angeliaume**, Total*, ONERA**
Context and Objectives
Slide 2
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Present Remote Sensing technologies and methodologies to survey, detect and
interpret hydrocarbon slicks in off shore domain
• For regular monitoring in Exploration and HSE context
• In case of incident occurring on surface /subsurface
• In case of emergency
Oil slicks
Remote Sensing Data
• Optical data (+) numerous satellites
(+) detection/characterization (multi and
hyperspectral)
(+) Very good resolution (below 1 m)
(-) Clouds
(-) Daytime acquisition only
Active Passive
Radar system
E.M. radiation
Optical system
• Radar data
(+) Transparency of the cloud cover
(+) Acquisitions during day and night
(+) Capability of programming satellite for
world wide daily acquisition (day & night)
(+) 24/24h acquisition
(-) Heavier image processing
(-) Image readability harder (Black & White)
(-) Look-alike risks analysis
For slick detection SAR data
Slide 3
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Terminology
What do you mean by ‘Slicks’?
Slide 4
Fault or O&G infrastructure
Oil slick : film of oil on the
surface of water. The origine of the
leakage is not precise.
Oil seep : slick of natural origin.
Oil spill : slick related to an
accidental pollution
Modified from FUGRO-NPA 2013 Slick = Seep + Spill
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Slicks detection from satellite image
• Oil slicks detection
• Wind effects
Ideal window for oil slicks detection:
2-3 m/s < WindSpeed < 8-9 m/s
2 km
Slightly rough surface
Smooth Surface
Rough Surface
Slide 5
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Null to low wind conditions
seeps
seeps
Spill
ENVISAT RADAR IMAGE
Versus Spill Versus Look-Alikes detection Slide 6
Biological films
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Slide 7
Oil Spill Detection Versus Oil Seeps Detection
SPILL SEEPS
Location Near Shipping Lane Near off-shore facilities (Pipeline, Platform…)
Anywhere
Morphology
Straight behind boat Extended in case of major pollution
size, shape (curvature,…), repetition pattern (twin seeps…) Relationship between wind and current (direction)
38 km
Boat
3 km 10 km 10 km
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Look-alike and false alarms for spill and seep Algae
Rain Cell
Atmospheric phenomena
Island Flow
Non wind area
Slide 8
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Multi-temporal & Repeatability
30 km ‘Flower’ structure identification
Historical ENVISAT SAR Data Set
Most discriminating criteria for seep detection : repeatability Slide 9
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Slide 10
Off shore facilities monitoring
15th January
13th December
LEGEND
Area of interest
Plateforms, rig,… Location
Oil Spill
Example of two acquisitions on
the same area of interest, one
month time lapse
25 km
25 km
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
LEGEND
Field
Potential
emission
zone of
recurrent
natural seeps
Off shore facilities monitoring
Leakage
13th December
24 km
Slide 11
Natural seeps
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Off shore facilities monitoring
07th January
24 km
D LEGEND
Field
Potential emission
zone of recurrent
natural seeps
Recurrent
Natural seeps
Slide 12
LEGEND
Field
Potential
emission
zone of
recurrent
natural seeps
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
24 km
Off shore facilities monitoring
15th January
B LEGEND
Field
Potential emission
zone of recurrent
natural seeps
Recurrent
Natural seeps
Slide 13
LEGEND
Field
Potential
emission
zone of
recurrent
natural seeps
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Off shore facilities monitoring
A LEGEND
Field
Potential emission
zone of recurrent
natural seeps
?
26th January
24 km No Recurrent Natural seeps
Slide 14
LEGEND
Field
Potential
emission
zone of
recurrent
natural seeps
Off shore hydrocarbon detection Automatic detection based on :
– A empirical radar reflectivity model. Ocean surface SAR response is modeled under the same conditions of incidicence/azimuth as during the acquisition
– Consideration of ocean-weather conditions at the time of acquisition: wind speed and direction from Database or in situ platforms measurements
Slide 15
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Off shore hydrocarbon detection
Result image : – ‘Difference’ between satellite and modeled image highlights slicks
Slide 16
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
17 Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle The service involves three different divisions and their experts in Total: metocean,
remote sensing and environment for oil-slick drift predictions.
• Slick surface extent? • Drift direction? • Impacts to sensitive areas (coastlines, protected areas)?
Inform Management Authorities
Media NGOs
SPILL WATCH
Early alert scheme to support quick response
5-days predictions of slick positions
Satellite Oil spill modelling Metocean
TEC/GEO MTG/TTP HSE/ENV
OIL SPILL
“SPILL WATCH” : an oil spill response strategy Slide 17
Metocean monitoring
Satellite acquisition Metocean model
Possibility to have metocean data (3D currents & winds) with a 5-days forecast in few hours
SPILL WATCH : Metocean Data Slide 18
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
• Geographical coordinates
• Area : 754 km2
• Length : 70 km
• Width : 6 à 10 km
70 km
.
Possibility to have 2 satellite images per day
December 21st, 09.30 am
SPILL WATCH : Satellite Acquisition Slide 19
Oil Spill Modelling
Oil profile
Spill parameters
Metocean data
Satellite images
Possibility to have oil slick drift over 5 days to be able to adapt quickly the oil spill response
Repositionning slick position, Using satellite images
SPILL WATCH : Oil Spill Modelling Slide 20
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Time lapse oil slicks monitoring allows to : Detect hydrocarbon traces and their recurrence
Identify and classify the different possible origins of these slicks
Localize the source of the slick
Evaluate the magnitude of the slick and its evolution with time
Assist the team in charge of the facilities and the antipollution squad
‘Spill Watch’ an integrated approach!
Develop new techniques (R&D) to improve detection, characterization and quantification
Conclusion Slide 21
Paper No.184419-MS • Use of Remote Sensing Radar Techniques for Oil and Gas (O&G) Facilities Survey in Offshore
Domain for Environment and Exploration: Oil Slicks Detection and Interpretation (Seeps and Spill) • V. Miegebielle
Thank You / Questions
Slide 22