Towards correlating between magnetic measurements conducted on core-material and magnetic downhole-logs obtained using a new borehole magnetometer
Abstract
Detailed magnetic properties of rock cores from drill-sites CM and BA (CM1B, CM2B, BA1B, BA3A) in Wadi Zeeb and Wadi Lawayni of Oman were obtained as part of post-drill lab measurements onboard R/V Chikyu. The operation was conducted in two different phases under the auspices of the Oman Drilling Project. The acquisition of magnetic property of core samples is crucial for assessing the performance of a new borehole magnetometer that is currently under development and will be deployed in early 2019. As a preliminary step towards comparing between the bore-hole and the magnetic properties data (including: magnetic remanence, susceptibility) measured on the recovered core, we compile all measurement results available from cores of drill-sites whose diameter is large enough for the borehole magnetometer to re-enter following the initial attempt in April 2018.
We examine whether the magnetic anomalies identified in the profiles are large enough for the borehole magnetometer to detect under normal conditions and discuss any technological and design improvements needed to meet this target. We also explore methods that will facilitate the correlation of magnetic downhole logs with the remanence and susceptibility datasets measured on core-material in future.- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.V13E0161H
- Keywords:
-
- 0456 Life in extreme environments;
- BIOGEOSCIENCESDE: 8140 Ophiolites;
- TECTONOPHYSICSDE: 8416 Mid-oceanic ridge processes;
- VOLCANOLOGYDE: 8424 Hydrothermal systems;
- VOLCANOLOGY