Rock friction coefficient measuring system

Abstract

The application relates to the field of oil and gas drilling experiments, and discloses a rock friction coefficient measuring system, which comprises a soaking unit and a detection unit, wherein the soaking unit is used for soaking first rock samples and second rock samples under the simulation of downhole drilling fluid; the detection unit comprises a loading mechanism, a displacement driving mechanism, a load detection device and a friction force detection device; the loading mechanism is used for applying a load to the first rock samples and the second rock samples which are stacked in an up-down order after soaking; the displacement driving mechanism is used for driving the second rock samples to move relative to the first rock samples; the load detection device is used for detecting the load applied by the loading mechanism; and the friction force detection device is used for detecting the friction force applied by the second rock samples on the first rock samples. The rock friction coefficient measuring system can simulate the condition that drilling fluid invades a rock broken zone in a drilling process, and can accurately measure the rock friction coefficient when the drilling fluid invades.

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