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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:
;
Issue Date:
Research Org.:
The Trustees of Columbia University in the City of New York. New York, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176086
Patent Number(s):
7168508
Application Number:
10/850,691
Assignee:
The Trustees of Columbia University in the City of New York (New York, NY)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

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/1176086.
@article{osti_1176086,
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 = {2007},
month = {1}
}

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Works referenced in this record:

High Resolution Downhole Measurements of Porosity and Fluid Saturation While Core Drilling
conference, April 2013