Patent application number | Description | Published |
20080201969 | Orientation Sensing Apparatus and a Method For Determining an Orientation - An orientation sensing apparatus includes a rotatable first member, an orientation sensor device fixed with the first member for generating orientation data relating to an orientation sensor device orientation, and a rotation sensor device for generating rotation data relating to rotation of the first member. A method for determining an orientation includes assembling a set of sensor data including the orientation data and rotation data and processing the set of sensor data to generate a set of corrected orientation data. The set of corrected orientation data includes the orientation data which has been corrected using the rotation data to reduce the effects of rotation of the first member and misalignment of the gravity sensor device. One or more sets of corrected orientation data may be processed to determine an inclination orientation of the first member or a toolface orientation of a second member which is connected with the first member. | 08-28-2008 |
20120205154 | AZIMUTHAL ORIENTATION DETERMINATION - Apparatus, systems, and methods may operate to determine the rotating magnetic tool face associated with a rotating section of a drillstring, to determine angular displacement between the rotating section of the drillstring and a substantially fixed section housing the rotating the section, and to determine the magnetic tool face of the substantially fixed section by combining the rotating magnetic tool face and the angular displacement. Additional apparatus, systems, and methods are disclosed. | 08-16-2012 |
20140333310 | ANGULAR POSITION SENSOR WITH MAGNETOMETER - An angular position sensor can include a magnetic device from which a magnetic field emanates, and multiple magnetometers, whereby each magnetometer senses a varying strength of the magnetic field due to relative rotation between components of a well tool. A method of determining an azimuthal position of a shaft which rotates relative to an outer housing can include securing a selected one of at least one magnetic device and at least one magnetometer to the shaft, securing the other of the magnetic device and the magnetometer to the outer housing, a fluid motor rotating the shaft relative to the outer housing in the well, and the magnetometer sensing a varying strength of a magnetic field emanating from the magnetic device as the shaft rotates relative to the housing. | 11-13-2014 |