This model is comprehensive, simple, easy to use, and capable of describing a wide range of drill design features.
Nabors Industries Ltd. provides offshore platform work over and drilling rigs and manufactures top drives for a broad range of drilling applications, directional drilling systems, rig instrumentation and data collection equipment, pipeline handling equipment and rig reporting software.
A drilling burr-control chart (DBCC), based on experimental results, is a tool for the prediction and control of drilling burrs for a large range of drilling parameters.
The size of the fragments was in the range of 2 5 mm, which is within the size range of drill cuttings.
The influence of HOT's working frequency and amplitude on drill-string axial vibration was obtained, and the vibration transmission range of drill-string with different working frequency and amplitude was also provided.
A procedure is outlined to calibrate the specific energies, where only a small number of calibration experiments are required for a wide range of drilling conditions and drill-bit geometry.
Within the range of drill loads of 500 to 1200 N and rotation speeds of 50 to 200 rpm, the maximum torque is no more than 45 Nm, and the power consumption is less than 0.8 kW.
The numerical simulations show that the drill pipe rotation builds cuttings presented in non-symmetric distribution along the hole and significantly decreases the cutting volume concentration at the medium and high fluid inlet velocities and lower range of drill pipe speeds.
The proposed model is capable of describing a wide range of helical drills.
