Method and apparatus for determining a trajectory of a directional drill
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United States of America Patent
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Oct 3, 2006
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app pub date -
Feb 21, 2003
filing date -
Feb 21, 2003
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Abstract
An apparatus for determining a trajectory of a directional drill includes two length measurement devices deployed along a surface of the drill string and a controller capable of determining the heading of the drill string from two lengths of the drill string measured by the two length measurement devices. A method includes determining at least two lengths along a surface of a drill string; and determining a heading of the drill string using the at least two determined lengths.
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