H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/32
H04N 7/18 (2006.01) E21B 19/20 (2006.01) E21B 45/00 (2006.01) E21B 47/04 (2006.01)
Patent
CA 2039406
ABSTRACT OF THE DISCLOSURE Video systems and methods for determining the length of objects to be inserted in a wellbore, and for summing the lengths to obtain an accurate determination of the depth at which a bottomhole assembly is located at any given time. The video systems and methods of the present invention are also used in conjunction with hookload and traveling block location information to determine bottomhole assembly depth while drilling, or tripping-in or tripping out of a well. Also disclosed is a method of accurately determining the transition a drillstring undergoes and its associated movement when passing from in-slips to out-of-slips.
Mayes James
Orban Jacques
Wraight Peter
Mayes James
Orban Jacques
Schlumberger Canada Limited
Smart & Biggar
Wraight Peter
LandOfFree
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