Airborne Gravity
Introduction - System
Development & Operations - Data
Processing - Resolution
and Accuracy - Conclusion
The unique design of the Fugro airborne
gravity system provides costs savings by way of:
- Aircraft independent gravity systems
- Reliable L&R gravity sensors
- Minimal tie line requirements
- Corrections that minimize the need for extreme flight
stability
The unique design criteria also provides high
quality, minimally filtered data that have been verified by
three independently measured methods. These data have been
acquired in real exploration survey conditions.
Internal and external evaluations have
quantified these improvements over salt domes and thick
sediments in the petroleum environment. Internal evaluation
consistent of 6 non-averaged repeated lines and 101 network
crossovers, along with external evaluation consistent of ground
gravity comparison results in an accuracy of approximately 0.6
mGals with 6km half-wavelength, half-amplitude resolution.
The Fugro fleet, under the command of 15
strategically located Fugro Airborne Survey offices around the
world, include 16 aircraft suitable for the economic acquisition
of airborne gravity data. Fugro has acquired over 150 million
kilometers of geophysical data of which 80,000 has been gravity.
Acknowledgments
The ground gravity dataset was donated by
Conoco for use in airborne gravity data evaluation.
(Unfortunately, due to contractual obligations, we cannot show
the ground gravity data itself.) |
