seismic - geophysical exploration

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)


Untitled

Page 10

0 50 100 150 200


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

Issues in Alberta

• Aboriginal Consultation

• Single Regulator

• Seismic on Lakes

• Line Intensities

• Human Resources – Non Skilled

WWW.CAGC.CA

seismic - geophysical exploration

Documents