The invention discloses a reservoir fracture identification method and an imaging
logging reservoir fracture identification method, wherein the reservoir fracture identification method comprises the steps of a step of determining a
porosity curve, wherein an acoustic
porosity curve and a density
porosity curve of a to-be-analyzed reservoir are respectively calculated based on the lithological information of the to-be-analyzed reservoir according to a preset reservoir curve model; a step of determining a porosity curve
assembly, wherein the acoustic porosity curve is superposed with the density porosity curve as the porosity curve
assembly of the to-be-analyzed reservoir at the dry layer of the to-be-analyzed reservoir; and a step of identifying the type of the fracture, wherein at other
layers of the to-be-analyzed reservoir, the acoustic porosity curve is compared with the density porosity curve in the porosity curve
assembly, and determining the
fracture type of a corresponding layer segment based on the comparison result according to the preset fracture model. The reservoir fracture identification method and the imaging
logging reservoir fracture identification method can perform reservoir
fracture type identification visually, quickly and reliably, and furthermore can effectively settle a multi-solution problem and a solution omission problem in an existing method.