Multi-means integrated fracturing crack quantitative evaluation method

• Main Authors: CHANG XIN, WANG LEI, YANG CHUNHE, GUO WUHAO, BI ZHENHUI, YING QIQI, ZHOU JUN, YANG HANZHI, GUO YINTONG, ZHANG XIAOYU, ZHAO GUOKAI
• Format: Patent
• Language: Chinese; English
• Published: 20.08.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a multi-means integrated fracturing crack quantitative evaluation method. The method comprises the steps: preparing a cylinder sample by using an unconventional tight reservoir underground full-diameter rock core; performing an indoor hydraulic fracturing physical simulation test on the cylindrical sample; obtaining fracturing crack information of the cylinder sample; acquiring strain information of the cylinder sample in the fracturing process; performing a crack surface stress sensitivity test on the cylinder sample; acquiring crack space characteristics of the cylinder sample; preparing a standard cylinder sample by using the cylinder sample; performing an osmotic stress sensitivity test testing on the standard cylinder sample; acquiring quantitative data of the crack surface of the standard cylinder sample; and performing comprehensive quantitative evaluation on the fracture surface. The method can be used for quantitatively evaluating the complexity and permeability characteristic