Exploration Applications of Satellite Imagery in Mature Basins--A Summation
BERGER, ZEEV, Esso Canada, Calgary, Alberta, Canada
A series of examples supported by surface and subsurface controls illustrates procedures used to integrate satellite imagery interpretation into a conventional exploration program, and the potential contribution of such an approach to the recognition of new hydrocarbon plays in mature basins.
Integrated analysis of satellite imagery data consists of four major steps. The first step focuses on the recognition of style, trend, and timing of deformation of exposed structures located at the basin interior or around its margins. This information is obtained through an integrated analysis of satellite imagery data, stereo aerial photography, surface geological mapping, and field observations.
The second step consists of integrating the satellite imagery with gravity and magnetic data to recognize obscured and/or buried structures. These may be traced from exposed basin margins or may be found within the basin as solitary features. Special emphasis is placed on delineating subtle basement related structures that may have been overlooked during routine mapping using well and seismic data.
The third step involves the analysis of available seismic data which is specifically processed to enhance subtle basement topography in order to determine influences on reservoir quality. To establish the movement history of basement structures and their influence on the paleogeomorphologic evolution of the basin, key seismic lines are squeezed, colored, and flattened at several different horizons.
In the fourth step, subsurface structure, isopach, show, and pool maps derived from available well information are integrated into the structural interpretation. From this new exploration concepts and an inventory of new leads can be developed for the basin.
These four analytical steps are demonstrated with examples form the Powder River basin, Western Canada basin, Paris basin, and Central basin platform of west Texas. In all of these highly mature basins, it is easy to demonstrate that (1) hydrocarbon migration and accumulation was largely controlled by subtle basement structures, and (2) these structures can be detected through the integrated analysis of satellite imagery.
AAPG Search and Discovery Article #91007© 1991 AAPG International Conference, London, England, September 29-October 2, 1991 (2009)