THE DEVELOPMENT OF AN IMPACT-SLIDING WEAR TEST MACHINE

摘要

A new test machine was developed to simulate the impact-sliding wear conditions between the casing and the tool-joint in drilling fluid during the deep or ultra-deep well drilling. At first, a tribo-system model for the deep section of the drilling-pipe and casing is presented and the lateral vibration of the drilling-pipe is taken into account. Then the framework of the test machine is introduced based on the system model. The on-line detection measures of the tribological parameters such as wear, fraction torque, and temperature are described. Finally, some test results obtaining by this test machine are shown which present a good corresponding relationships with the practical casing wear monitoring results.