Oil reservois are located below the surface of the earth, so their presence and size underground cannot be assessed visually. The presence of oil in layers below the earth's surface can only be determined by drilling. The drilling service provides companies with information about the presence and properties of formations. A key question that needs to be answered before any drilling work begins is where to drill the wells. Therefore, geological exploration work is necessary. Because drilling is expensive, oil companies have to drill in places where oil is most likely to be found. Therefore, it is extremely important to conduct seismic surveys to identify areas with a high probability of occurrence of oil reservoirs. Seismic surveys provide a picture of the earth's surface, which helps oil companies look underground and find oil and gas reserves. Its main purpose is to provide the most accurate graphical representation of specific parts of the underground geological structure. Seismic operations perform this function by using sound waves to create images of underground layers. At GEB, we promise to provide you with a high level of delivery of all these services, regardless of land or sea.