F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 55/48 (2006.01) G01S 5/14 (2006.01)
Patent
CA 2476085
A precision positioning AGM system is provided for detecting the location of an AGM device, as well as the time of a smart pig passing the location. The practice combines two processes into one by using a GPS receiver at the AGM location to record raw GPS measurements at each AGM location. A second GPS receiver is provided at a remote known base location. These position signals and a pig-passage time signal from the AGM provide high accuracy positioning and pig passage time, with only one crew being required. These signals are broadcast to a remote monitoring site. This makes real-time pig tracking unnecessary and eliminates the need for more than one crew visiting the same site.
Dean Alan P.
Liu Ziwen W.
Ndt Systems & Services Ag
Riches Mckenzie & Herbert Llp
Varco I/p Inc.
LandOfFree
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