Radioactive tracer cement thickness measurement

Radiant energy – Geological testing or irradiation – Well testing apparatus and methods

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Details

250259, 250266, 250270, 250303, G01V 504, G01V 500

Patent

active

050013424

ABSTRACT:
A process for measuring the thickness of the cement surrounding a casing in a borehole wherein a radioactive tracer is mixed with the cement and the response is monitored to determine the cement thickness. An alternate method is the mixing of a material with the cement that can be activated by a neutron source with the resulting activity being measured to determine the cement thickness.

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"Quantitative Monitoring of Water Flow Behind and in Wellbore Casing," by D. M. Arnold and H. J. Paap, Journal of Petroleum Technology, Jan. 1979, pp. 121-130.

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