Oil pipe scale formation detection tool

The invention relates to the technical field of gas field well testing, in particular to an oil pipe scale formation detection tool. The oil pipe scale formation detection tool comprises a body which extends vertically. A cavity is formed in the body. One or at least two locating pins penetrating through the cavity are arranged on the body in a vertically spaced mode. The portions, at the bottoms of the locating pins, in the cavity are provided with a shearing part used for shearing the locating pins. The lower portion of the shearing part is provided with an elastic ring used for tightly ejecting the shearing part upwards. The elastic ring is arranged on the body in the axial direction of the body in a sleeved mode. The lower portion of the elastic ring is provided with a fixedly-connecting structure used for being fixedly connected with the body. The oil pipe scale formation detection tool is used so that the scale formation condition in an oil pipe can be known and research on scale prevention and scale removal can be conducted.