The geophysical case history of Alturitas area, western Venezuela is presented. It is unusual in that all the commonly used geophysical methods were employed. The Alturitas anomaly was discovered by the torsion balance in 1929. Subsequent surveys included the gravity meter, magnetometer, refraction and reflection seismograph. The surveys are discussed in chronological order giving the reasons for the particular surveys and results obtained. Although the geophysical results were generally good, an error correlation led to a misinterpretation of stratigraphic relations. This in turn resulted in drilling depths much deeper than anticipated. Five wells were drilled on the concession resulting in three oil wells and two dry holes. Alturitas‐1 and Alturitas‐2 are two of the deepest oil wells outside the United States. Maps are presented for the key geophysical surveys.
Groundwater Prospecting in Fractured Shale Aquifer Using an Integrated Suite of Geophysical Methods: a Case History from Presbyterian Church, Kpiri-Kpiri, Ebonyi State, SE Nigeria
