Density Mapping Technology — A New Geophysical Method for Density Contrast Exploration in the Crust

Abstract

Abstract

Density Mapping Technology (DMT), new geophysical method provides new information about the density variations in the Earth's crust. These density variations can be relevant during initial prospecting in regional scale and can also provide useful information in detail (e.g. hydrocarbon reservoir structures).

The DMT has been used in different areas around the world so far and this topic is focused on the demonstration of the results related to the hydrocarbon exploration. This technology is very well applicable in basin areas. For instance, it may help to find target horizons where DMT may significantly differ from Bouguer anomalies or to identify perspective zones in accordance with seismic profiles. Moreover, the DMT can be easily acquired within a short time and for reasonable costs, even in large unexplored areas. Moreover, this method does not require any physical measurements or personal exploration in the field.

One of the essential elements for the DMT is a numerical value of the constant W₀ (62 636 856.0 m²/s²). This global geodetic constant, representing the potential of the Earth, is not dependent on tidal disturbances and/or any other disturbing influences. Such constant can be used for any point on Earth as a supporting parameter. Eventually, this parameter has been internationally accepted and incorporated into the set of fundamental worldwide constants.

The DMT method is based on specifically derived application of the W₀ constant representing geoidal potential. This technology enables to efficiently discover/reveal even small changes in density (Density Deviations) throughout the Earth's crust. Therefore, the DMT technology should be considered as a valuable addition to the geological dataset that provides new information relevant for further geological interpretation and for making more accurate assessments during the prospective phase of any exploration.

AAPG Datapages/Search and Discovery Article #90260 © 2016 AAPG/SEG International Conference & Exhibition, Cancun, Mexico, September 6-9, 2016