Mechanism of drilling rate improvement using high-pressure liquid nitrogen jet

• 作 者: HUANG Zhongwei WU Xiaoguang LI
• 机 构: StateKeyLaboratoryofPetroleumResourcesandProspecting
• 出 处: 石油勘探与开发:英文版
• 发表日期: 2019年4期
• 关键词: liquid NITROGEN JET cold shock JET impact rock-breaking experiment assisted DRIL
• 基金项目: Supported by National Science Fund for Distinguished Young Scholars(NO.51725404),Program of Introducing Talents of Discipline to Chinese Universities(NO.B17045),National Natural Science Foundation of

To address the high rock strength and low drilling rate issues in deep oil/gas and geothermal exploitation, we performed mechanical property tests on three kinds of rock samples(granite, shale and sandstone) subjected to liquid nitrogen(LN2) cooling and c