| Autor: |
Ilya Silvestrov, Emad Hemyari, Andrey Bakulin, Yi Luo, Ali Aldawood, Flavio Poletto, Yujin Liu, Yue Du, Anton Egorov, Pavel Golikov |
| Rok vydání: |
2021 |
| Zdroj: |
Day 3 Tue, November 30, 2021. |
| DOI: |
10.2118/204543-ms |
| Popis: |
We present processing details of seismic-while-drilling data recently acquired on one of the onshore wells by a prototype DrillCAM system with wireless geophones, top-drive, and downhole vibration sensors. The general flow follows an established practice and consists of correlation with a drillbit pilot signal, vertical stacking, and pilot deconvolution. This work's novelty is the usage of the memory-based near-bit sensor with a significant time drift reaching 30-40 minutes at the end of each drilling run. A data-driven automatic time alignment procedure is developed to accurately eliminate time drift error by utilizing the top-drive acceleration sensor as a reference. After the alignment, the processing flow can utilize the top-drive or the near-bit pilots similarly. We show each processing step's effect on the final data quality and discuss some implementation details. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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