00639nab a2200205 4500 20260520001017.0 260224s xxu Improved design, matrix materials reduce costs while drilling interbedded formations 12/09/06 ; 07/08/2006 3 p. Drilling Contractor Vol. 62, no. 2 (mar/abr. 2006) ; p. 26-28 ARTICULO Bell, A. 48983 Lugo, F. 48984 Trépanos 2418 Costos 702 Costos de perforación 40287 Lugo, F. 48984 180265 180265 0 0 0 0 248084 BAAB BAAB 2026-03-05 200039947 0 200039947 2026-03-05 23:45:24 2026-03-05 ARTICULO