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Title: Logging-while-coring method and apparatus

Abstract

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.

Inventors:
 [1];  [2]
  1. (New York, NY)
  2. (Cornwall, NY)
Publication Date:
Research Org.:
Joint Ocean Institutions, Inc
Sponsoring Org.:
USDOE
OSTI Identifier:
919898
Patent Number(s):
7,293,613
Application Number:
11/639,551
Assignee:
The Trustees of Columbia University (New York, NY) OSTI
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Goldberg, David S., and Myers, Gregory J. Logging-while-coring method and apparatus. United States: N. p., 2007. Web.
Goldberg, David S., & Myers, Gregory J. Logging-while-coring method and apparatus. United States.
Goldberg, David S., and Myers, Gregory J. Tue . "Logging-while-coring method and apparatus". United States. https://www.osti.gov/servlets/purl/919898.
@article{osti_919898,
title = {Logging-while-coring method and apparatus},
author = {Goldberg, David S. and Myers, Gregory J.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 13 00:00:00 EST 2007},
month = {Tue Nov 13 00:00:00 EST 2007}
}

Patent:

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