Azimuth Estimation For Directional Drilling
AssigneeHalliburton Energy Services, Inc.
InventorRashobh Rajan Sobhana
Life of this patent
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Abstract
A method may comprise measuring during a survey operation a gravitational field data using a survey accelerometer and magnetic field data using a survey magnetometer and determining during a drilling operation an azimuth of a wellbore based on the gravitational field data and the magnetic field data obtained during the survey operation. A system may comprise a drilling rig; a pipe string attached to the drilling rig; a bottom hole assembly attached to the pipe string, wherein the bottom hole assembly comprises at least one sensor; a drill bit, wherein the at least one sensor measure a revolutions-per-minute (RPM) of the drill bit; and a computing subsystem.
Claims20
A method, comprising:
- measuring during a survey operation a gravitational field data using a survey accelerometer and magnetic field data using a survey magnetometer;
- and
- determining during a drilling operation an azimuth of a wellbore based on the gravitational field data and the magnetic field data obtained during the survey operation.
A system comprising:
- a drilling rig;
- a pipe string attached to the drilling rig;
- a bottom hole assembly attached to the pipe string, wherein the bottom hole assembly comprises at least one sensor;
- a drill bit, wherein the at least one sensor measure a revolutions-per-minute (RPM) of the drill bit;
- and
- a computing subsystem connected to the at least one sensor and configured to:
- measure a gravitational field data using a survey accelerometer and magnetic field data using a survey magnetometer;
- and
- determine an azimuth of a wellbore based on the gravitational field data and the magnetic field data.
Dependencies are inferred from the claim text.