Wells – Submerged well – Testing
Patent
1992-03-09
1994-06-07
Britts, Ramon S.
Wells
Submerged well
Testing
166 665, 166250, 166381, 367 86, 367911, E21B 4700, G01V 326, G01V 334
Patent
active
053181298
ABSTRACT:
Sondes provided with magnets are used in wells fitted with a metallic casing. The sondes are pressed at the surface against the inner wall of the casing and taken down towards the bottom by means of a stiff driving element such as a tubing provided with thrust driving means for the longitudinal drive and lateral extensions for the lateral positioning of the sonde, or using pulling slings, etc. The wall of the sonde pressed against the casing can have the same bending radius as the casing in order to improve the coupling. The sonde can be associated with an electronic data acquisition and transmission box fastened to the tubing. Before any intervention is performed, the tubing is moved sufficiently in order to suppress any mechanical coupling with the sonde. After it has been used, the sonde can be displaced towards another point of measurement or taken up to the surface by moving the tubing.
REFERENCES:
patent: 2530308 (1950-11-01), martin
patent: 3110257 (1963-11-01), Lebourg
patent: 3182724 (1965-05-01), Shore
patent: 4953136 (1990-08-01), Kamata et al.
Britts Ramon S.
Institut Francais du Pe'trole
Schoeppel Roger J.
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