Experiment apparatus and experiment method for evaluating lubricating performance of deep well drilling fluid

The present invention discloses an experiment apparatus and an experiment method for evaluating the lubricating performance of a deep well drilling fluid. The apparatus mainly comprises: a composite drilling experiment system, wherein the composite drilling experiment system comprises a rotary drive mechanism, a drilling drive mechanism, a drilling rod, a rock core, a heating mechanism and a rock core clamper, the rock core and the heating mechanism are arranged inside the rock core clamper, and the rotary drive mechanism and the drilling drive mechanism are used for driving the drilling rod; a drilling fluid supply system, wherein the drilling fluid supply system provides a dynamic drilling fluid for the composite drilling experiment system; a pressure mechanism connected to the rock core of the composite drilling experiment system and providing pressure for the friction drilling between the drilling rod and the filter cake formed on the rock core surface; and a testing and calculation unit for testing and c