摘要：To investigate the influences of liquid nitrogen cryogenic cracking characteristics of rock, the sandstone and marble were selected as the experimental samples. The methods of scanning electron microscope and nuclear magnetic resonance were employed to test the influences of liquid nitrogen cryogenic cracking on rock micro-structure. Besides, the change in compressive strength was tested by uniaxial compression method. The experimental results indicated that liquid nitrogen cryogenic cracking could lead to the development of the micro-fissures and micro-pores. When water is contained in rock, the pore water is frozen and expanded, and therefore intensify the cracking degree. The mechanical property of rock was deteriorated and the strength decreased due to the action of liquid nitrogen cryogenic cracking. Therefore, liquid nitrogen can improve rock-breaking efficiency and reduce the time of hole-making as a drilling fluid, can induce more micro-fractures on the face of main fracture as well as lead to natural fractures opening as a fracturing fluid.
©, 2015, Northeastern University. All right reserved.

ISSN号：1005-3026

卷、期、页：v 36,p158-162

发表日期：2015-05-01

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：Dongbei Daxue Xuebao/Journal of Northeastern University

通讯作者：蔡承政,位江巍

第一作者：黄中伟,黄中伟

论文类型：期刊论文

论文概要：黄中伟,黄中伟,蔡承政,位江巍，Experiment of liquid nitrogen cryogenic cracking on rock and its application prospect in oil & gas exploration and production，Dongbei Daxue Xuebao/Journal of Northeastern University，2015，v 36,p158-162

论文题目：Experiment of liquid nitrogen cryogenic cracking on rock and its application prospect in oil & gas exploration and production