Video logging system having remote power source

Details Video logging system having remote power source Video logging system having remote power source

E - Fixed Constructions

21

B

E21B 47/00 (2006.01) E21B 47/01 (2006.01) E21B 47/12 (2006.01) G02B 6/44 (2006.01)

Patent

CA 2084501

An instrument probe (12) contains a camera (38) and light source (28) which is positioned in front of the camera for illumi- nating the passage (14) being inspected, such as a bore or a casing. The power source for the instrument probe is located at the sur- face. A support cable (16) contains an optical fiber (50) for con- ducting camera signals to the surface and electrical conductors (54, 60) for conducting power from the surface to the instrument probe. Outer electrical conductors (60) in the cable are alternating with and in electrical contact with strength member strands (58). The cable is enclosed in a stainless steel outer sheath (62). The support cable is coupled to the instrument probe by three fluid seals (64, 73, 76). The first (64) seals the outer sheath in the probe. The sec- ond (73) seals at the breakaway connection and the third (76) seals at the probe bulkhead (74).

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