Print this pageConstrained Gravity-Magnetic Interpretation. A New Way of
Regional-Residual Separation of Potential 
Field
Data. Venezuela Examples
Victor Graterol
In the evaluation of sedimentary basins with extensive gravity and magnetic
coverage, but with limited seismic data, the integrated interpretation of the
three types of geophysical information is strictly necessary to establish not
only the possible potential of the basin, but also the define the follow up
exploration program.
Gravity data is the key to establishing basin potential. CONTROL POINTS
coming from the limiting existing seismic data and direct information from wells
and geological surface maps, can be employed to constrain the gravity data and
obtain REGIONAL and RESIDUAL constrained maps that permit a more adequate
quantitative gravity modeling method for outlining the main existing anomaly
targets in the basin. The final composite structural map showing the top of the
main density interface, also permit the optimum design for the location of the
eventual follow seismic program.
Examples of constrained gravity-magnetic interpretation for specific areas
within the Eastern Venezuelan, Guarumen and Maracaibo basins are presented to
illustrate this approach in the interpretation of potential field data
.
AAPG Search and Discover Article #91019©1996 AAPG Convention and Exhibition 19-22 May 1996, San Diego, California