Abstract
To solve the problem of hole cleaning quantitative evaluation in highly deviated / horizontal well sections, experiments are made on the experimental system of highly deviated / horizontal well sections, the influence laws of annulus return speed, pipe speed, drill tool eccentricity, well deviation angle, drilling fluid density and viscosity, cuttings size and other parameters on cuttings bed thickness are studied, and the calculation models of steady-state dimensionless cuttings bed thickness in horizontal well and highly deviated well are established, the calculation error is controlled within ±5%, which provides an accurate method for hydraulic parameter optimization and design.
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