Downhole annulus evaluation apparatus, systems, and methods

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United States of America Patent

PATENT NO 10061054
APP PUB NO 20180136361A1
SERIAL NO

15576109

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Abstract

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Disclosed are apparatus, systems, and methods for determining the completeness of the cement sheath or gravel-pack annulus of a borehole based on gamma counts or count rates measured with a pulsed neuron tool deployed in the borehole in conjunction with a quantitative relationship between certain gamma count (rate) ratios and a parameter of completeness. In various embodiments, the determination utilizes the ratio of the net long inelastic count (rate) and the near capture count (rate), or the ratio of the net near inelastic count (rate) and the long capture count (rate). Additional apparatus, systems, and methods are disclosed.

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Patent Owner(s)

  • HALLIBURTON ENERGY SERVICES INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guo, Weijun Houston, US 82 290
Jacobson, Larry Alan Richmond, US 2 17

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