Experimental hydraulic fracture propagation on naturally tight intra-platform shoal carbonate

The large-size true triaxial hydraulic fracturing simulation experiments on tight intra-platform shoal carbonate samples were carried out. The newly-formed fracture networks composed of a vertical main fractures and horizontal branch cracks were formed under the background of tectonic stress. The T2 spectrum indicated the number of microfractures increased after hydraulic fracturing. Stylolite structures and calcite veins belong to the dominant fracture surface, which can be activated by hydraulic fracturing.252