Development of Test Stand for Measuring Cutting Heat Generated in Polar Ice Drilling

Abstract:

Cutting heat generated during rotary drilling is extremely easy to melt ice located in warm ice layer of deep ice cap because the high temperature is almost close to or even reach ice pressure melting point, which results in low penetration rate, poor core recovery and frequent sticking accidents. So it is necessary to design a device to test the cutting heat which is influenced by WOB, rotation speed and the structure of cutting tool; the test results would provide the theoretical basis for the design of cutting tool structure and optimization of drilling parameters. With the XY-1 core drilling system as the platform, using the wireless signal transmission principle, the test stand for testing cutting heat generated during rotational drilling in ice layer is designed. Preliminary test results show that by this experimental device, the parameters of WOB, torque and cutting temperature can be accurately measured, which can also be used for the related experimental study.

Key words:polar drilling; deep ice drilling; ice core; “warm ice”; cutting heat; cutting temperature; test stand