Freudenthal, Tim (2022): Borehole temperature measurements at MeBo200 drill site GeoB23231-1, South China Sea [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.945416, In: Freudenthal, T (2022): Borehole temperature measurements and drilling data at MeBo200 drill sites in the Black Sea and the South China Sea [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.945432
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Published: 2022-06-15 • DOI registered: 2022-10-13
Abstract:
Borehole temperature measurements at site GeoB23231-1 were performed with the sea floor drill rig MARUM-MeBo200 during research expedition SO266 in November 2018 on Four Way Closure Ridge in the South China Sea. A platinum resistance sensor integrated in the 1343 Slimhole Memory Acoustic Tool developed by ANTARES Datasystems GmbH was used to measure the temperature of the fluid within the borehole with 103 mm diameter. The temperature range is –20 to +80 °C, the absolute accuracy within the limits of the measuring range is about 1 °C. The resolution of the temperature measurements is about 0.003 °C. Temperatures were logged with a frequency of 0.5 Hz by a memory adapter with an integrated clock that was synchronized with GPS-time. Borehole logging was conducted during trip out of the drill string. When the drilling operation was completed and the drill string was lifted by about 3.5 m the logging string was dropped into the drill string. After landing on the drill bit the logging string together with the drill string were tripped out of borehole. The depth control system of the drill rig was used to calculate the sensor depth with an accuracy of 0.1%.
Related to:
Freudenthal, Tim; Villinger, Heinrich; Riedel, Michael; Pape, Thomas (2022): Heat flux estimation from borehole temperatures acquired during logging while tripping: a case study with the sea floor drill rig MARUM-MeBo. Marine Geophysical Research, 43(3), 37, https://doi.org/10.1007/s11001-022-09500-1
Project(s):
Coverage:
Latitude: 22.048650 * Longitude: 119.801383
Date/Time Start: 2018-11-09T07:07:00 * Date/Time End: 2018-11-09T18:05:11
Minimum DEPTH, sediment/rock: 4.76 m * Maximum DEPTH, sediment/rock: 141.28 m
Event(s):
SO266_31-1 (GeoB23231-1) * Latitude: 22.048650 * Longitude: 119.801383 * Date/Time: 2018-11-08T21:23:00 * Elevation: -1323.0 m * Recovery: 2.69 m * Campaign: SO266/1 * Basis: Sonne_2 * Method/Device: MeBo200 (MeBo200) * Comment: Mebo:#27, Drilling depth=140.40mbsf; origion of coordinates rmark 5. on Deck 20:19 (UTC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Freudenthal, Tim | Geocode | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Freudenthal, Tim | Depth temperature sensor | Geocode – mbsf |
| 3 | Temperature, technical | T tech | °C | Freudenthal, Tim | ||
| 4 | Comment | Comment | Freudenthal, Tim |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
18895 data points
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