Advances in onshore imaging

Onshore data typically poses additional challenges for processing and imaging in comparison with offshore data. Here we can think of limited access for acquisition, more variation in source and receiver coupling, more severe random noise conditions, presence of coherent (shear) noise such as groundroll, more complicated multiple systems, processing no longer being done from a flat datum and signal distortion from a rapidly varying shallow overburden. To overcome these challenges, several advances towards a better stack are being made.. Some of these will be discussed below. Examples shown will be from two onshore datasets; a sparser Libyan survey and a high-density Wide-Azimuth survey acquired in the South of Oman.<br>