Investigation of the influence of PDC bit blade geometry on the rock cut-ting efficiency in hard abrasive formations
DOI:
https://doi.org/10.31471/2304-7399-2026-22(83)-158-176Keywords:
PDC bit, blade geometry, finite element modeling (FEM), drilling efficiency, rate of penetration (ROP), mechanical specific energy (MSE), wellbore.Abstract
Analysis of professional literature indicates that despite the community's significant attention to improving PDC cutter technologies, the issue of blade geometry remains under-researched. It is the spatial form of the blades that serves as a decisive design criterion, directly impacting the efficiency, stability, and wear resistance of the tool. This paper analyzes the experience of drilling deep wells in hard abrasive sandstones of the Dnieper-Donets Basin (DDB) and proposes methods to enhance bit performance by modifying their geometry. Using the finite element method (FEM), the dependence of the rate of penetration (ROP), mechanical specific energy (MSE), and frictin coefficient on the cone angle was modeled. The results obtained confirm the necessity of developing new PDC bit designs with optimized blade shapes.
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