摘要：Temperature and fluid affect the rock properties is an unavoidable problem in drilling engineering .The objective of this study is to separate the effect of temperature and fluid medium on hard sandstone drilling parameters, which include the weight of bit (WOB), torque and mechanical specific energy (MSE). A series of rock drilling experiments was carried out. The results was very interesting that liquid nitrogen (LN2) cause the sandstone more difficult to drill than air and water, which is contrary to the view that the differential temperature between low temperature fluid and the rock enhance the rock failure. LN2 caused the average MSE to be increased by about 20.64%, water caused the average MSE to be reduced by about 42.66%, compared with dry drilling. From the results, it can be concluded that the temperature has no significant effect on hard sandstone drilling parameters and fluid medium type affect the parameters remarkably in the range of 20-300℃. This phenomena maybe attribute to that water caused the surface free energy of new cuttings surface reduced and LN2 caused the surface energy increased compared with air.
© 2017 ARMA, American Rock Mechanics Association.

卷、期、页：v 2,p937-944

发表日期：2017-01-01

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）

发表期刊名称：51st US Rock Mechanics / Geomechanics Symposium 2017

通讯作者：张文平,代献伟,郭肇权,程镇

第一作者：李根生,黄中伟,宋先知,盛茂

论文类型：会议论文

论文概要：张文平,李根生,黄中伟,宋先知,盛茂,代献伟,郭肇权,程镇，Effects of fluid medium and temperature on bit-rock interaction parameters of hard sandstone drilling，51st US Rock Mechanics / Geomechanics Symposium 2017，2017，v 2,p937-944

论文题目：Effects of fluid medium and temperature on bit-rock interaction parameters of hard sandstone drilling