Reducing Geologic Uncertainty By Combining Seismic Models With Real-Time LWD Measurements: Mars A-8 Case Study

摘要

While surface-seismic data are used to evaluate potential targets, they lack the resolution needed to place those targets reliably. True-vertical-depth (TVD) and true-vertical-thickness (TVT) synthetic ties created from real-time logging data can improve that resolution. By use of TVT, the synthetic ties match the seismic model better, enabling updates to the well path and precise placement inside the target. Also, multiple velocity models are incorporated to obtain better time/depth relationships and to predict pore-pressure anomalies better.