Logging-while-coring method and apparatus
Patent
·
OSTI ID:1176086
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:
- The Trustees of Columbia University in the City of New York. New York, NY (United States)
- Sponsoring Organization:
- USDOE
- Assignee:
- The Trustees of Columbia University in the City of New York (New York, NY)
- Patent Number(s):
- 7,168,508
- Application Number:
- 10/850,691
- OSTI ID:
- 1176086
- Country of Publication:
- United States
- Language:
- English
| Ocean Drilling Program Leg 209 Scientific Prospectus Drilling Mantle Peridotite Along the Mid-Atlantic Ridge from 14° to 16°N | report | November 2002 |
High Resolution Downhole Measurements of Porosity and Fluid Saturation While Core Drilling
|
conference | April 2013 |
| Ocean Drilling Program Leg 204 Prospectus Drilling Gas Hydrates On Hydrate Ridge, Cascadia Continental Margin | report | February 2002 |
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