Study of Permeability Variation with Confining Pressure in Micro-fracture and Low-permeability Rock
The development of low-permeability reservoir is becoming increasingly important. However, its strong diagenesis, fine and close lithology and general development of micro-fracture make permeability, the key symptomatical parameter has strong stress sensitive. In order to get the quantitative relation between permeability and confined pressure in micro-fracture and lowpermeability rock, a theoretical relation was attained based on theoretical research and some hypothesis. With its guidance, an experimental study was carried out on three low-permeability cores with natural micro-fracture from certain oil field. Through analyzing the experimental data and matching work, a relation curve was acquired from the experiment by which the undetermined coefficient of the theoretical relation can be obtained, and then the quantitative relation between permeability and confined pressure in the micro-fracture and lowpermeability rocks are acquired ultimately.
micro-fracture low-permeability rock confining pressure quantitative relation
XUE Yongchao CHENG Linsong CHENG Jia
CMOE Key Laboratory of Petroleum Engineering in China University of Petroleum, Beijing, 102249
国际会议
成都
英文
186-189
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）