Radiant energy – Geological testing or irradiation – With drill or drilling
Patent
1987-03-13
1989-03-21
Fields, Carolyn E.
Radiant energy
Geological testing or irradiation
With drill or drilling
250266, 250269, 250270, G01V 512, G01V 514
Patent
active
048146099
ABSTRACT:
A borehole logging apparatus for performing radiation based measurements has a tubular body for movement through a borehole. The tubular body includes an upwardly opening passage and an interior chamber for accommodating the positioning and lengthwise insertion and removal of an energy radiating source. The radiation source includes an uppermost portion which may be remotely engaged by a source removing device for its removal in the event the tool becomes stuck in the borehole and in order to facilitate source handling at the earth's surface.
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Roesler et al, "Theory & Application of a Measurement-While-Drilling Neutron Porosity Sensor", SPE/IADC 16057, Mar. 1987.
Koopersmith and Barnett, "Environmental Parameters Affecting Neutron Porosity, Gamma Ray, and Resistivity Measurements Made While Drilling", SPE 16758, Sep. 1987.
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Evans Mike
Hache Jean-Michel
Marienbach Edouard
Rhein-Knudsen Erik
Wraight Peter D.
Borst Stephen L.
Fields Carolyn E.
Schlumberger Technology Corporation
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