Rapid rock brittleness evaluation method based on rock debris fractal dimension

• Main Authors: LI XIUBIN, FU JIYOU, XU SHENGCHI, CHANG XIAOLONG, SUN ZHIGAO, CHEN NAIZHI, CHEN XIANGHUI
• Format: Patent
• Language: Chinese; English
• Published: 27.10.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to the technical field of reservoir rock mechanics, in particular to a rock brittleness rapid evaluation method based on rock debris fractal dimensionality, which comprises the following steps of: 1, acquiring particle size distribution of upward-returning rock debris of a modeling drilling well, sampling the upward-returning rock debris of the modeling drilling well, and carrying out standardized crushing to obtain fractal fractal dimension of the upward-returning rock debris of the modeling drilling well; then the crushed rock debris is subjected to graded screening and graded weighing, and the relative cumulant of the granularity of the rock debris is obtained through calculation; 2, calculating fractal dimensions of the rock debris; 3, calculating the rock brittleness of the rock debris sample by adopting a mineral component analysis method; and 4, establishing a correlation calculation model of the rock debris fractal dimension and the rock brittleness index of the rock debris sampl