Carbonate rock fracture detection method

The invention provides a carbonate rock fracture detection method, and relates to the field of seismic exploration and development, and the method comprises the following steps: selecting an original seismic data volume in a target area, carrying out the attribute analysis, and obtaining a gradient structure tensor attribute data volume through parameter debugging; tensor thickness attribute extraction is carried out based on the gradient structure tensor attribute data body, and a target area fracture distribution feature map is obtained; thinning the gradient structure tensor attribute data volume, retaining data in a fracture distribution range, and setting data values outside the fracture range as null values to obtain a phase control attribute data volume under fracture seismic facies control; and the phase control attribute data body is applied to three-dimensional carving, and three-dimensional space phase control carving of the disconnection control type karst reservoir body is achieved. According to