System and method for determining the inclination of a wellbore
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United States of America Patent
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Sep 13, 2005
Grant Date -
Jul 14, 2005
app pub date -
Mar 25, 2003
filing date -
Mar 25, 2003
priority date (Note) -
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Abstract
A well survey system comprising and electronic survey tool for determining the inclination of a wellbore is disclosed herein with methods of use. In some embodiments, the electronic survey tool includes an electrolytic tilt sensor adapted to measure a first tilt angle within a first plane and a second tilt angle within a second plane of the electrolytic tilt sensor. The electronic survey tool also includes a system processor for determining the inclination of the wellbore based on the first and second tilt angles. As such, a drop-in replacement and improvement on a mechanical critical vertical drift (CVD) tool is provided herein. The electronic survey tool of the present invention also improves upon and overcomes the disadvantages of prior art electronic survey tools. Due to the stability of the improved survey tool over time and with changes in ambient temperature, for example, the improved survey tool does not require periodic recalibration or correction of measurements for errors and biases.
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