Method and apparatus for locating wet cement plugs in open bore

Details Method and apparatus for locating wet cement plugs in open bore Method and apparatus for locating wet cement plugs in open bore

1990-06-05

1991-08-06

Neuder, William P.

Wells

Processes

With indicating, testing, measuring or locating

166 64, E21B 3313, E21B 4908

Patent

active

050369164

ABSTRACT:
A method and apparatus for locating and determining the quality of a downhole wet cement abandonment plug positioned in an open bore hole. The quality of the plug is detetmined by retrieving a sample of the wet cement mixture to the surface by remotely operating a fluid sampler included as one component in a logging tool. The sample permits the determination of the purity and quality of a downhole wet cement plug, providing valuable information for assessing whether the plug will set properly. Thus the method and apparatus greatly reduces the risk of plug failure due to an inferior cement mixture resulting from the intrusion of contaminants in a wet cement plug.

REFERENCES:
patent: 2231577 (1941-02-01), Hare
patent: 4003431 (1977-01-01), Novotny et al.
patent: 4043394 (1977-08-01), Campbell
patent: 4741201 (1988-05-01), Propst

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