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Canadian Association of Geophysical
Contractors
Seismic - Geophysical Exploration
• 250 Member Companies
• 10,000 Employee Workforce
• Seismic – Technical aspects
• Seismic in Motion (SUM)
• Equipment
• Line Cutting
• Issues
What’s all the fuss over?
Basic Seismic
http://www.naturalgas.org/
Acquiring Land Seismic Data
North
2D Seismic:
Receiver Points &
Source Points on the
Same Line
Shallow seismic section
Six 2D seis lines
North
3D Seismic:
Receiver Points & Source
Points On Different Lines At
Different Intervals
Source: Tom Feigs, Geovisualization, EnCana Corporation
Measure changes in: acoustic impedance (reflections) and/or travel times.
Visualise Saturation, Pore Pressure, or Temperature all over your field
(away from wells).
Base 3D seismic survey Monitor 3D seismic survey
Principles of 4D Seismic
Explosives
1/8th KG Paper Charges
2 KG
Paper
Charge
Explosives
Examples of plastic shells
40000 lb vib
Recording Equipment
Receivers (land)
• Land phones
• Marsh phones
• 2 component
• 3 component
• Digital phones
1980’s vs. 2004
Track drill – late 80’s cat cut
Track drill – late 90’s mulcher
Buggy drill – late 90’s mulcher
650kg Mini-Heli Drill (compare this to the FN-110!)
1.5 km/km2 of Anthropogenic Edge
Untitled
Page 10
0 50 100 150 200
Simulated Years into Future
1:
1:
1:
0
3
5
T FT km\km2: 1 -
11
1
1
1900 1950 2000 2050 2100
km/km2
(10 x 10 km)
3.0 km/km2 of Anthropogenic Edge
Untitled
Page 10
0 50 100 150 200
Simulated Years into Future
1:
1:
1:
0
3
5
T FT km\km2: 1 -
11
1
1
1900 1950 2000 2050 2100
km/km2
(10 x 10 km)
4.0 km/km2 of Anthropogenic Edge
Untitled
Page 10
0 50 100 150 200
Simulated Years into Future
1:
1:
1:
0
3
5
T FT km\km2: 1 -
11
1
1
1900 1950 2000 2050 2100
km/km2
(10 x 10 km)
SAGD
Exploration
60mx40m
spacing
equals
~41km/km2
1990’s
2000’s
2000’s
Issues in Alberta
• Aboriginal Consultation
• Single Regulator
• Seismic on Lakes
• Line Intensities
• Human Resources – Non Skilled
WWW.CAGC.CA