Abstract
Summary Focusing the drillbit source while-drilling can yield vital information to drillers and interpreters to help optimize their parameters and update their models. We present a case study in which we utilize a robust workflow to process seismic-while-drilling data acquired in a desert environment to image the drillbit source at its accurate subsurface positions. The results demonstrate the ability of the focusing method to localize the drillbit source as it traverses through the subsurface layers with different lithology. We modified the one-way traveltime migration kernel to allow only emanating and dip angles at the source that contains quality first arrival data to reduce the artifacts in the migrated image. We stacked all instances (images) of the sources to create a migrated image of the drillbit at all times, which showed key layers and markers associated with casing points, loss-circulation zones, major lithological changes. Identifying these markers accurately is quite useful to optimize the drilling and characterize subsurface properties.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call