Logging-while-coring method and apparatus
- New York, NY
- Cornwall, NY
A method and apparatus for downhole coring while receiving logging-while-drilling tool data. The apparatus includes core collar and a retrievable core barrel. The retrievable core barrel receives core from a borehole which is sent to the surface for analysis via wireline and latching tool The core collar includes logging-while-drilling tools for the simultaneous measurement of formation properties during the core excavation process. Examples of logging-while-drilling tools include nuclear sensors, resistivity sensors, gamma ray sensors, and bit resistivity sensors. The disclosed method allows for precise core-log depth calibration and core orientation within a single borehole, and without at pipe trip, providing both time saving and unique scientific advantages.
- Research Organization:
- Joint Ocean Institutions, Inc
- Sponsoring Organization:
- USDOE
- Assignee:
- The Trustees of Columbia University (New York, NY)
- Patent Number(s):
- 7,293,613
- Application Number:
- 11/639,551
- OSTI ID:
- 919898
- Country of Publication:
- United States
- Language:
- English
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High Resolution Downhole Measurements of Porosity and Fluid Saturation While Core Drilling
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| In-Situ Sampling and Characterization of Naturally Occurring Marine Methane Hydrate Using the D/V JOIDES Resolution | report | June 2003 |
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