Systems and Methods for Resistivity Measurement at Multiple Angles of Rotation

摘要

Systems and methods are provided to obtain multiple resistivity measurements using a resistivity tool eccentered and rotating in a wellbore, which may be used to ascertain information relating to a drilling fluid in the wellbore. One such system includes a resistivity tool and data processing circuitry. The resistivity tool may become eccentered in a wellbore filled with drilling mud at least when the wellbore is at least partially deviated. The resistivity tool may also rotate within the wellbore and to obtain at least two resistivity measurements at different corresponding angles of rotation within the wellbore. The data processing circuitry may determine a mud phase angle by comparing the resistivity measurements obtained by the resistivity tool.

主权项

1. A logging system comprising:
a resistivity tool configured to be eccentered in a wellbore filled with oil-based drilling mud at least when the wellbore is at least partially deviated, to rotate within the wellbore, and to obtain at least two resistivity measurements at different corresponding angles of rotation within the wellbore; and data processing circuitry configured to determine an electrical mud parameter by comparing the at least two resistivity measurements obtained at the two different angles of rotation within the wellbore.