Автор: admin-atg

Work Procedure

Search and exploration of mineral deposits is carried out in three stages:

1st stage — probing. It is conducted from land, water or air. A regular grid is formed with a step of 35-50m with surveying along and across the site.

2nd stage — GPR data is processed and 3D models of the dielectric permittivity and effective resistance of ground formations are done. Then cutting of profiles, horizontal sections, construction of structural maps and forecast maps of oil-saturated thicknesses is carried out.

3rd stage — interpretation of 3D models results. At this stage, a whole range of factors are taken into account:

• values of dielectric permittivity constant as an integral parameter, effective resistance as a differential parameter, structural and geometric characteristics;
• correlation coefficients of the temperature of the environment, oil saturation, porosity, the presence of tectonic disturbances, proximity to the boundaries of the survey area, the structure of objects are being defined.

The final modeling involves comparison and refinement of the characteristics of the identified object and comparing them to well data if available. Based on the results of such a multi-stage work, preliminary maps are built, which give a high-quality vision of the distribution of oil saturated zones. After specifying the depth intervals, the final forecast maps with the quantitative characteristics of the oil saturated layers are drawn.