US 6,981,550 B2
Sonde
Svein Håheim, Oslo (Norway); Paul S. Jaques, St. Ives (United Kingdom); Robert Hughes Jones, Falmouth (United Kingdom); and Will Wason, Penzance (United Kingdom)
Assigned to Schlumberger Technology Corporation, Sugar Land, Tex. (US)
Appl. No. 10/416,565
PCT Filed Sep. 24, 2002, PCT No. PCT/GB02/04317
§ 371(c)(1), (2), (4) Date May 12, 2003,
PCT Pub. No. WO03/027717, PCT Pub. Date Apr. 03, 2003.
Claims priority of application No. 0122929 (GB), filed on Sep. 24, 2001.
Prior Publication US 2004/0194956 A1, Oct. 07, 2004
Int. Cl. E21B 47/00 (2006.01)
U.S. Cl. 166—250.11 16 Claims
OG exemplary drawing
 
1. An apparatus for deploying a sensor against a well casing, said apparatus comprising:
a) a sonde comprising an expandable and/or resilient C-shaped member and at least one sensor, the member having an annular configuration with a single gap that defines two ends facing each other, the member being compressible, or having been compressed, to bring its ends closer together;
b) means for supporting and locating the sonde inside the well prior to deployment: and
c) means for releasably compressing the C-shaped member so as to allow positioning of the sonde inside the well and subsequent deployment.