The document discusses the application of remote sensing in seismic planning, emphasizing its cost-effectiveness and ability to optimize operations while minimizing risks. It details methodologies for site surveys, environmental assessments, and the use of digital mapping to enhance accessibility and reduce operational errors. Additionally, it highlights the importance of remote sensing images and GIS databases for geological mapping, cluster positioning, and designing seismic lines based on topographical and environmental data.

1. REMOTE SENSING
APPLIED TO
SEISMIC PLANNING

2. GENERAL INFORMATION REMOTE SENSING O&G STUDY
Remote Sensing
These cost effective technics and image processing
methodologies combined with expertise on surface
conditions and geomorphology help reducing risks
and provide good pre-analysis assessments.
Remote sensing could reduce
errors and optimize operations
CONTACT :

3. GENERAL WORKFLOW CONCEPT REMOTE SENSING O&G STUDY
Theoretical planning
Seismic Position Signal
(SPS)
Field control of SPS
Design possible Design impossible
Point positioning
GPS survey
Design to mobile
Unit
Source shot points
QC
Data acquisition
Point removal in SPS
Simulation
Line pre-plot
pre-planning
Scouting for design
and camp sites
Line cutting and
access clearing
Seismic acquisition
Dynamite Vibroseis
ESBS - ESIA
Site inventory
Ecological
sensitivity
Socio-cultural
sensitivity
Pollution
Demobilization
Recommendations
Remote sensing applicability

4. REMOTE SENSING IMAGES REMOTE SENSING O&G STUDY
Satellite date resolution (pixel size)
LR : Low Resolution (> 15 m)
MR : Middle Resolution (10 - 15 m)
HR : High Resolution ( 2-5 – 5 m)
VHR : Very High Resolution (0.5 – 1 m)
Digital mapping with MR gives large coverage
1:50000 to 1:100000 maps at low cost.
Digital mapping with VHR gives details maps at
1:1500 to 1:5000 for field operation.

5. HHOOTT DDEESSEERRTT NEW PROJECTS REMOTE SENSING O&G STUDY
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REMOTE SENSING SUITABILITY FOR
GROUND SURFACE PARAMETERS

6. SATELLITE IMAGERY FOR ACCESS STDUDIES REMOTE SENSING O&G STUDY
CCHHAALLLLEENNGGEE OOBBJJEECCTTIIVVEESS PPRROOPPOOSSEEDD SSOOLLUUTTIIOONNSS
Access routing and soils types
Type of vibrators
Topography
Radio antenna location
Cover signal for radio devices
Mapping of Facilities
Rock and soils classification
Height variations classes
Geomorphic parameters
3D viewing
Access mapping
Height variations classes
Vegetation mapping
Combination of different
parameters to represent
an accessibility map for
complex area

7. LOGISTICS PARAMETERS REMOTE SENSING O&G STUDY
HHOOTT DDEESSEERRTT CCHHAALLLLEENNGGEE
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WWAATTEERR
CCHHAALLLLEENNGGEE
Risk assessment
Camp site settlement
Available water Resources
Loosed or compacted soils
Access mapping
Slope of dunes
Geomorphic parameters
Dunes movements
Identification of main access waterways for seismic operations.
Waterways type : width, settlement, banks type, sensitivity
Incidence of network during seismic operations :
waterways (rather straight) / natural network (more sinuous).
Analysis of meteorological conditions / Flooding risk
Bathymetry parameters

8. ENVIRONMENT AND SECURITY REMOTE SENSING O&G STUDY
JJUUNNGGLLEE CCHHAALLLLEENNGGEE
Line and corridor opening
Impact on wildlife (fauna and flora)
Risk assessment
Near shore pollution
Vegetation mapping
Vegetation indices and
classification
EENNVVIIRROONNMMEENNTT BBAASSEELLIINNEE SSTTUUDDYY ((EEBBSS))
• Initial inventory that will be used as a reference
for impact study
• Impact of openings for track access :
o Minimize distances and detours
o Presence of pre-existing access and seismic
lines for reuse.
• Impact on soils (drainage and erosion)
• Natural reserve and compliance with local laws
• Identify ecological sensitive sites
• Identify any pre-existing damage / pollution
resulting from industrial activities, past or
present.
• Position of the camps for teams security

9. FIELD BOOK FOR OPERATION TEAM REMOTE SENSING O&G STUDY
rock limestone sand
ATLAS AND GIS DATABASE:
Providing help to select model of geophone and vibro-sourc vs type of
terrain
Providing high resolution satellite image and land use interpretation.
Providing of geographic database in digital format with DEM XYZ.
As lithology type is very important to
evaluate the contact between the ground
and vibrator: providing information
to optimize material and methodology.

10. CASE STUDY – QUICK-LOOK PRE-ANALYSIS REMOTE SENSING O&G STUDY
Statistic analysis of geomorphology
> Methodology of seismic acquisition
Flat reg soils
Habitats and cultures
Sand dunes
Folded bedrocks
Flat surfaces
Sebkhas
Sand dunes
7-9°
10-14°
15-25°
30 m DEM (SRTM) Slopes
High cuestas
Sandstones
Slope analysis to plan
seismic surveys

11. CLUSTER POSITIONING & VALIDITY REMOTE SENSING O&G STUDY
Cluster positioning by selected criterion
> slope and hydrographic network distance
Cluster validity automatically processed using GIS
1st criterion: Slope
2nd criterion: Hydrography
Pattern: regular and rectangular kernel of 2500m x
900m, Must be aligned on the N110E direction.
Cluster: Ideally situated in the center of the pattern.
Smaller than the pattern: 100m x 150m and floating
in a buffer zone of 500m x 300m into the pattern
Validation must fulfill at least 2 criteria
Simulated GIS cluster pattern
Validated cluster
No validated cluster in pattern
Buffer
Pattern
Cluster

12. LINES POSITION OPTIMISATION REMOTE SENSING O&G STUDY
Design of seismic lines:
•Theoretical and optimized position for
geophones
•Use of existing roads & tracks
•Calculation of valley Length and mid-height
left and right of the river channel.
• Selection of upper cuesta line of valleys by threshold
on slopes automated digitization and extraction
• Processing of asymmetry of valley indices (Ratio W/H)
• GIS processed attributes table related to point and
lines

13. GEOLOGY ANALYSIS REMOTE SENSING O&G STUDY
Dip and thickness calculation
Geologic mapping
=> Help for seismic planning
Photo-interpretation of fault/fracture
network
Detection of morphologic scarps from DEM
Classification of faults (orientation, length,
type)
Calculation of spacing between faults within
orientation classes
Geostatistics
Orientation
Length
Density
Connectivity
Spacing
Data strips extraction along topographic section
=> Guides for line
Sub-Surface
modelisation
positioning

14. ACCURATE TOPOGRAPHIC PRODUCTS REMOTE SENSING O&G STUDY
DEM SRTM 90m
DEM SRTM / GDEM 30m
DEM ALOS PRISM 5m
SATELLITE ALOS DEM PRODUCT :
XY accuracy: 5m
Z accuracy: 2,5 to 3m
Maximum scale analysis is 1/8500
Optimized scale analysis is 1/12000
Easy to produce on areas cloud free
on all continents

15. ALTERNATIVE DEM PRODUCTS REMOTE SENSING O&G STUDY
Accurate Z values for accessibility mapping Minimizing distortion on steep slopes - Orthorectifaction Adjusted mapping of photo-horizons
BETTER DEM FOR :
Orthorectified products
Stereoscopic photo-analysis
DEM processing
Anaglyph products
Geological mapping,
Tectonic Geomorphology
Dip processing
Topographic profiles
Hypsometry
ALTERNATIVE DEM :
•Best than GLOGAL DEM
•Quickly and low cost than LIDAR
30m SRTM DEM 1m LIDAR

16. SEMI-AUTOMATED PRODUCTS REMOTE SENSING O&G STUDY
Topographic correction for
Geophysics
3D viewing
Topographic profile
Slope map
Morphometry
Hydrography
Improved DEM XYZ accuracy: Accessibility
1cm to 10m depending on technics
PRE-ANALYSIS
GIS DATABASE

17. SUMMARY REMOTE SENSING O&G STUDY
Planning and design of seismic surveys face several challenging
constraints for quality acquisition:
Field accessibility
Logistics
Environment and Security
Appropriate seismic sources
Strike and dip positioning of lines
Seismic velocity and topographic corrections
Demobilization of sites
Coastal sensitivity
Natural hazards and risks assessment
Satellite images
Digital Elevation Model
Topography
Geology
Land use
Environment
Pre Analysis
Topography
Campaign planning
Survey