BOREHOLE LOGGING EVALUATION

Brand	Owner	Address	Description
COLOG	LAYNE CHRISTENSEN COMPANY	1800 HUGHES LANDING BOULEVARD, Suite 800 The Woodlands TX 77380	BOREHOLE LOGGING AND EVALUATION;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

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.