Preparation and fracturing simulation method for multi-layer rock sample containing lithologic gradual change area

• Main Authors: XIANG DEGUI, JIANG HONGWEI, FENG XIAO, ZHAO QING, ZHAI WENBAO, WANG QIAN, FANG CHAO, TAN PENG, CHEN CHAOWEI
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a preparation and fracturing simulation method of a multi-layer rock sample containing a lithologic gradual change area, and the preparation method of the multi-layer rock sample comprises the following steps: analyzing the characteristics of multi-layer reservoir rocks, and obtaining the spatial distribution characteristics of internal fracture parameters of the multi-layer reservoir rocks; obtaining spatial distribution characteristics of mechanical parameters of in-layer homogeneous lithologic layers and inter-layer transition area lithologic layers of the multi-layer series reservoir rocks; and according to the determined spatial distribution characteristics of the crack parameters and the spatial distribution characteristics of the mechanical parameters, constructing a 3D printing model, and printing by adopting a 3D printing technology to obtain a multi-layer rock sample. According to the method, a rock mechanical test method is adopted, a 3D printing technology is combined, spa