Method for detecting drilling fluid in the annulus of a cased we

Details Method for detecting drilling fluid in the annulus of a cased we Method for detecting drilling fluid in the annulus of a cased we

1986-12-22

1988-10-25

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

Nuclear transmutation

By neutron bombardment

376159, 376160, 376167, 250254, 250270, 166250, G01V 500

Patent

active

047802669

ABSTRACT:
A method for logging a cased well to determine the quantity and location of any barite weighted drilling fluid in the annulus between the casing and the wall of the wellbore. A tool assembly having a neutron generator and a gamma scintillation detector is used to log the zone of interest. The neutrons introduced into the well by the neutron generator convert a portion of the barium-138 in the drilling fluid to barium-137m. The magnitude of the gamma photon peak charactristic of the decayof barium-137 is used to identify the quantity of drilling fluid present in the annulus as a function of depth. This method is especially useful identifying the existence of channels in a cemented wellbore annulus.

REFERENCES:
patent: 2451472 (1948-10-01), Coggeshall
patent: 2451520 (1948-10-01), Teplitz
patent: 2484422 (1949-10-01), Muskat et al.
patent: 3019341 (1962-01-01), Monaghan
patent: 3115576 (1963-12-01), Rickard
patent: 3838279 (1974-09-01), Schultz et al.
patent: 3973626 (1976-08-01), Miles
patent: 4051368 (1977-09-01), Arnold et al.
patent: 4474240 (1984-10-01), Oliver, Jr. et al.
patent: 4524272 (1985-06-01), Paap et al.
patent: 4600838 (1986-07-01), Steinman

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