AcoustiCaliper™ MWD Tool
Borehole caliper measurements are provided in real time by the AcoustiCaliper™ MWD tool. This sensor has three acoustic standoff measurement transducers oriented 120 degrees apart radially to provide borehole diameter when rotating or sliding. Real-time caliper logs provide immediate feedback on borehole stability conditions, as well as detect such conditions as undergauge bits, sloughing shales and washouts.
Applications
- Environmental correction of LWD gamma ray, resistivity and neutron data
- Quality control for LWD logs
- Real-time assessment of wellbore stability
- Evaluation of hole cleaning and hydraulics
- Accurate location of tight spots or ledges
- Enhanced assessment of directional drilling tendencies
- Cement volume calculations
- Allows measurement of time-lapse borehole effects over multiple pipe runs
