The invention belongs to the technical field of
oil exploration, particularly relates to a preparation method of a
rock sample in a visual fracturing experiment, and aims to solve the problems that the
rock sample prepared by the existing method is easy to break and poor in sealing performance. The method comprises the following steps: S1,
cutting a glass sample; s2, manufacturing a
silica gel mold; s3,
cutting and manufacturing rock plates; s4, preparing
epoxy resin glue; s5, making a
rock sample; the method comprises the following steps: (1) pouring part of
epoxy resin glue prepared in the step (S4) into a
silica gel mold in the step (S2); (2) the rock plate in the step (S3) is put in; 3) pouring the residual
epoxy resin glue into a
silica gel mold, and curing; and 4) demoulding the cured epoxy resin glue and the rock sample, and
grinding and
polishing the surface to ensure the shooting effect of the experiment. According to the invention, while the mechanical and physical properties of the real rock are ensured, the problems that the rock sample manufactured by the existing method is easy to break and poor in sealing performance are solved, and the shooting effect of the DIC can be ensured.