A system for monitoring a marine well for shallow water flow: Development of early detection
| العنوان: | A system for monitoring a marine well for shallow water flow: Development of early detection |
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| المؤلفون: | Thien Nguyen, Shams Ul-Hadi, Zachary I. Metz, James A. Thomson, Daniel Wedding, William J. Berger, James F. Keenan |
| المصدر: | Interpretation. 9:T395-T405 |
| بيانات النشر: | Society of Exploration Geophysicists, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Geophysics, Shallow water flow, 0502 economics and business, 05 social sciences, Geochemistry, Early detection, Geology, 010502 geochemistry & geophysics, 01 natural sciences, 050203 business & management, 0105 earth and related environmental sciences |
| الوصف: | Deepwater basins around the world contain shallow sequences of overpressured, sand-prone sediments that can result in shallow water flow (SWF) events. These events have frequently resulted in wellbore instability and increased man-hour exposure to potential health, safety, security, and environment risks, as well as nonproductive time, and they have sometimes been the cause of the loss of a well while drilling the shallow (riserless) section for oil and gas exploration or development projects. Methods previously established to classify the magnitude of an SWF event have been used with partial success to identify the onset of an SWF event. The need existed to develop a system enabling early prediction, detection, and mitigation of SWF events while drilling. Real-time monitoring of the riserless section of a marine well for SWF requires a system using a plurality of data feeds that we defined as the SYSTEM. The data feeds include seismic data, remotely operated vehicle video, and surface and downhole logging measurements. An SWF surveillance methodology, which we defined as a discharge category model (DCM), has been developed for early detection of an SWF event, prior to the onset of wellbore instability. DCM focuses on baseline discharge categories (ranging from no flow to minor flow) prior to wellbore instability and taking into account the U-tube effects. Real-time monitoring of data feeds coupled with DCM in the context of SYSTEM has helped to mitigate SWF events. There have been no wells lost due to SWF events that have used DCM in the context of SYSTEM in various basins throughout the world. In total, 154 wells have been monitored globally using DCM with 46 SWF events detected and mitigated before reaching a severity level that might compromise well integrity from 2012 to 2019. |
| تدمد: | 2324-8866 2324-8858 |
| DOI: | 10.1190/int-2019-0092.1 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::09a6a3ee6e528896ded51fd25612ccb5 https://doi.org/10.1190/int-2019-0092.1 |
| رقم الانضمام: | edsair.doi...........09a6a3ee6e528896ded51fd25612ccb5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23248866 23248858 |
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| DOI: | 10.1190/int-2019-0092.1 |