Ground Water exploration
Prospecting for Groundwater in Sirya
Hydrogeology geophysics demands a high resolution data because a mistake of a few meters in target detection may cause the complete failure of the project.
Working in Syria, Soliton Ltd applied own patented High Resolution Electromagnetic technique (HREM) based on integration of tree TDEM – IP (Time Domain Electro Magnetic Induction Polarisation) Operationss.
Study area located in Central desert situated at an elevation of 50-120m and covered extremely dry soil, sandy dunes are common..
Expected aquifer depth of about 22 to 40 m and groundwater flow will be effective only in the case in which the top of the clays (the impermeable substratum) rest at a lower elevation.
HREM survey was used to accurately determine the depth to the top of clay seal. Totally 3 different layers were detected, with decreasing resistivity from the surface to the bottom.
To get a clearer view of the results, an EM section was constructed using IIP and SSEF techniques. The section includes results of all tree Operationss.
A comparison of the stratigraphic data with the EM geophysical model has shown an excellent agreement and assure that HREM Operations was able to resolve the depth of clays, with negligible error.
Three well have been drilled with successful result but previous wells in different location (even in the order of a few tens of meters) provided negative results. Thus, HREM technique contributed to save money and time by avoiding the drilling of dry wells.
Case study #6 Water sources investigation