Weathering zone determination in the province of Rio Negro, Argentina, with high resolution gravimetry

ABSTRACT This investigation demonstrates the advantages of microgravity results obtained with a digital gravimeter. On this basis, we determined the physical parameters of the weathering zone used in the calculation of static corrections in hydrocarbon exploration. A significant result presented here is, that by combining information from upholes with the application of microgravity results, the accuracy of the determination of the weathering thickness was improved by 5‐6 metres. It is also shown that application of this technique is not only time‐saving and economical, but it is also a more efficient method of determining anomalous bodies, which are overlooked by the conventional techniques currently used in prospecting.