Reflected wave enhancement using a single trace and a projection model: application to focused monitoring
Paper presented at the 2023 EAGE Annual, 5-8 June 2023, Vienna, Austria, presented by Habib AL KHATIB .
Common appraisal methods for oil and gas reservoir often begin with 3D seismic and exploration wells. These technologies provide spatial recognition along with focused stratigraphy and subsurface resources content. Even though models and simulations predict a reservoir dynamic, measuring this key component in time complements spatial technologies while providing relevant information regarding field optimization. Such approach is already massively used in history matching to update reservoir models. Time-lapse seismic (Mari et al., 2011) gives significant insight regarding the reservoir activity, and further intents to go toward continuous monitoring demonstrated the capability for seismic to detect daily reliable short-term calendar 4D effect (Berron, et al., 2015) that would be missed by a conventional 4D seismic (Bertrand, et al., 2013). These techniques have proven efficiency but are not necessarly well adapted to dense monitoring. For dense monitoring at specific spot locations, focused monitoring with light seismic spreads have proven efficiency (Morgan et al., 2020, Brun et al, 2021 2022).
After a short review of focused monitoring, we describe the specific procedure which has been developed to enhance reflected waves using a single trace and a projection model. An example of focused monitoring illustrates the efficiency of the processing procedure.