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.)
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