VIDL Network

Magnetic data, whether their acquisition is airborne, UAV or land, it is a little more complicated to use since the earth’s magnetic field is dipolar. This means that a magnetized body’s signature (anomaly) character has two components that need to be considered to obtain viable results. The signature consists of a minimum and a maximum component; and the shape changes based on its geographic location on the earth. The initial measured fields must therefore be corrected for geographic location. Once the magnetic field is understood, the interpretation of geologic structures becomes simpler and their signatures (anomalies) relate to the size, shape, depth, and rock composition can be identified.   Interpretation methods are designed as supplement tools for the exploration professional. Magnetic methods used singularly or integrated with other geophysical and geological data can identify and distinguish various basement and sedimentary structures; such as rifts, faults, hor...

VIDL Network experience can introduce you to Gravity Method for Oil-Gas-Mineral Exploration . The experience allows you to review some applications of these data or to embark on solving a specific geologic problem.  Gravity data can contribute to the resolution of a wide range of geologic problems. The interpretation correlations are considered less complicated than when using the magnetic or electromagnetic fields.  The gravity field relates directly to high- and low-density mass distributions; such as geologic structures (bodies). However, interaction between several masses can mask individual body signatures (anomalies). Therefore one needs to be versed on residualization techniques in order to isolate the anomaly of geologic interest. Gravity is just as useful a tool for investigating deep tectonic structures as part of regional syntheses as it is for finding buried streambeds or caves in urban engineering studies. Data acquisition survey parameters and meter preci...