Device for measuring friction coefficient of drilling plugging material

Abstract

The invention discloses a device for measuring the friction coefficient of a drilling plugging material. The device comprises a substrate which is provided with a speed sensor, a displacement sensor,a motor controller, a data collector, a heating assembly, and a sensing assembly, wherein a horizontal adjusting assembly is arranged at the bottom of the substrate. According to the method, a plugging material is loaded on a test vehicle, a motor drives a sliding block to pull the test vehicle, the moving speed of the test vehicle, displacement of the sliding block and the tensile force on the test vehicle are measured at the same time, a friction coefficient value of the plugging material can be obtained according to a friction coefficient calculation formula, meanwhile, the plugging material can be heated through a heating layer, and the environment from the room temperature to 350 DEG C is simulated; a first guide rail can guide the sliding block to move to prevent the sliding block from deviating from the rail, besides, the heating controller can raise the temperature according to the set temperature and automatically decide whether to continue to raise the temperature or stop raising the temperature according to the actual temperature measured by the thermodetector so as to automatically maintain the required temperature.

Description

technical field [0001] The invention relates to the field of exploration, in particular to a device for measuring the friction coefficient of drilling plugging materials. Background technique [0002] With the world's increasing demand for oil and gas resources and the depletion of conventional oil and gas resources, the field of oil and gas exploration and development has gradually moved towards deep and ultra-deep layers, and the bottom hole temperature of a considerable number of wells has exceeded 150 °C. In addition, as more and more geothermal wells are drilled, the bottom hole temperature of some wells even exceeds 300°C. At present, in the drilling of high-temperature formations, the problem of leakage is significant, and conventional plugging methods are difficult to be effective. This is because in high-temperature environments, the performance of plugging materials and the structural stability of the plugging zone formed are difficult to guarantee. And maintainin...

AI Technical Summary

Problems solved by technology

[0003] 1) The current equipment needs to stick the material on the steel plate to measure the plugging material, and the plugging material cannot roll, so there is no device for measuring the rolling friction coefficient;

[0004] 2) The existing device cannot simulate the high temperature environment where the friction of the plugging material is higher than 150°C

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