Design of a Novel HPHT Lubricity Tester and its Preliminary Application

Abstract:

Manifestation of friction between the drill string and the borehole is of special importance for modern drilling. A novel lubricity tester, in combination with high pressure high temperature(HPHT) actuators, has been designed to permit the evaluation and testing of various types and the lubricity of drilling fluids by simulating the rotational speed of the drill pipe and pressure exerted against the borehole. This instrument mainly consists of four parts, i.e., a friction mechanism, HPHT actuators, the computational control system, and a load apparatus. The key test cell has been introduced. The lubricity of the typical drilling-in system(PRD) has been evaluated using this instrument. The results showed that except for the filtration, the designed lubricity tester can effectively describe the friction behaviors in the whole dynamic drilling, by rotating the rod in the given environment.

• Periodical: Applied Mechanics and Materials (Volumes 220-223)
• Pages: 504-508
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.220-223.504
• Online since: November 2012
• Authors: Lin Xu, Ming Biao Xu, Lin Zhao
• Keywords: Drilling Fluid, Friction, HPHT, Lubricity Tester

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