摘要
天然岩石裂缝的性质与其表面形态紧密相关，描述裂缝的表面形态是深入分析裂缝力学性质和导流能力的基础。首次利用光电三维面形自动测量系统，测量了五１块沉积岩裂缝的表面形态，通过频谱分析得出了描述岩石断面形态的两个参数：分形维数和比例系数Ｃ。在对裂缝合成表面的频谱分析时，得出了描述裂缝两表面相关性的参数：裂缝的特征尺度。这些参数在分析裂缝井下闭合规律中是不可缺少的参数。
There is a tight relation between the width of rock fracture and its surface morphology. The description of a fracture surface morphologyis essential to the study of mechanic feature and the flow conductivity. As a pioneer, by means of photoelectric three dimension surface automatic measurement system, the authors measured the surface topography of natural fractures from five sedimentary rocks. The number of fractal dimension and coefficient C are got by spectrum analysis of a composed surface. The results show that the characteristic rule size plays a major roll to determine the fracture width. These parameters are essential to investigate the closure of a fracture under the reservoir conditions.
出处
《西南石油学院学报》
CSCD
1998年第2期19-22,共4页
Journal of Southwest Petroleum Institute
关键词
岩石
裂缝形状
表面性质
表现形态
钻井工程
Rock
Fracture geometry
Surface proprerty
Frequency spectrum analysis
Surface morphology
Characteristic rule
