Depth-domain Q compensation
Can Peng, Xuhui Luo, Diancheng Wang, Jeshurun Hembd · 2018
Frequency-dependent anelastic attenuation in the earth’s crust (the Q effect) is one of the main reasons for bandwidth shrinkage in seismic images and distortion of amplitude versus angle (AVA) response. Therefore, Q compensation is a critical step in seismic processing to achieve good resolution and correct AVA curves for further interpretation. Conventional Q compensation methods (pre-/post-migration) usually over-simplify geological structures or Q models. On the other hand, although Q compensating migration methods are highly accurate in handling complex structures and complex Q models in theory, they can be costly and susceptible to noise and artifact boosting. We propose a post-migration 3D Q compensation process in the depth domain that is accurate for complex geological structures, accommodates complex Q models, and also provides flexibility in noise handling and spectral control that is critical to AVA recovery. Presentation Date: Wednesday, October 17, 2018 Start Time: 1:50:00 PM Location: 204C (Anaheim Convention Center) Presentation Type: Oral