Improving seismic data quality
In 1989, 11 billion bbl of oil was discovered in the Gulf of Suez from drilling 5,000 km into the subsurface. Since then, only small discoveries have been made despite significant drilling efforts, with an additional 7,000 km drilled and only 2 billion bbl of oil added to the reserves.
Although 60 seismic surveys were acquired in the area through 2019, seismic data quality remained poor because of strong multiple contamination and inadequate acquisition parameters, resulting in inaccurate subsurface images that conflict with well measurements, and consequently, cause repeated drilling failures. The seismic surveys were small acquisitions with limited offsets and narrow-azimuth configurations and displayed small fold and poor imaging of deep sediments. These affected the subsurface illumination, signal-to-noise ratio, seismic resolution, and interpretability of complex structural and stratigraphic reservoirs associated with salt and rift tectonics.