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Logging-while-coring method and apparatus

Patent ·
OSTI ID:919898
 [1];  [2]
  1. New York, NY
  2. Cornwall, NY
+ Show Author Affiliations
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:
United States Department of Energy
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

References (4)

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
In-Situ Sampling and Characterization of Naturally Occurring Marine Methane Hydrate Using the D/V JOIDES Resolution report June 2003

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