Patent ID: 6737867
Filing Date: 2004-05-18
Classification: E21B,G01V

Abstract:
In an overall system in which a boring tool is moved through the ground within a given region along a path and in which region a cable is buried, a method comprising the steps of:transmitting a boring tool locating signal from the boring tool such that the boring tool locating signal exhibits a forward locate point at the surface of the ground; transmitting a cable locating signal from the cable such that the boring tool locating signal and the cable locating signal are distinguishable each from the other; measuring intensities of the boring tool locating signal and the cable locating signal in a predetermined way using a locator; establishing a pitch orientation of the boring tool; and using the measured intensities and established pitch orientation, determining a positional relationship including at least the forward locate point in scaled relation to the boring tool and the cable in said region.