Scintillator-based neutron detector for oilfield applications

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United States of America Patent

PATENT NO 9304226
APP PUB NO 20140124659A1
SERIAL NO

14127898

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Abstract

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Borehole logging tools and systems that include a scintillator positioned to interact with scattered source neutrons that are received from a target formation. The scintillator emits luminescence in response to interaction with the scattered neutrons. The scintillator includes an aluminofluoride host material (e.g., LiCAF). In a specific embodiment, the aluminofluoride host material is doped with europium. In a further specific embodiment, a processor distinguishes scattered neutrons from gamma rays based upon identifying a peak within an output signal from the scintillator. In yet another specific embodiment, a system includes a first scintillator and a second scintillator. The processor subtracts luminescence generated by the second scintillator from luminescence generated by the first scintillator to identify a neutron response of the first scintillator.

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Patent Owner(s)

Patent OwnerAddress
SCHLUMBERGER TECHNOLOGY CORPORATION300 SCHLUMBERGER DRIVE SUGAR LAND TX 77478

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berheide, Markus Medford, US 23 193
Qian, Jing Arlington, US 35 391
Roscoe, Bradley A West Chesterfield, US 28 518
Spillane, Timothy Quincy, US 6 42

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