Comparative analysis of API standard drilling pipes and those of with double shoulder tool joints

Abstract

The paper presents the data on the types, design peculiarities and requirements for the drilling pipes used in construction, overhaul repair and sidetracking. The comparative analysis of the pipes made with single shoulder tool joint according to API standard, as well as high torque and high efficient double shoulder tool joints from the world leading producers Pipe-Metallurgy Company “TMK”, National Oilwell Varco (NOV), HILONG Group of Companies is provided. Comparative analysis of the drilling pipes, as well as the double shoulder tool joint is presented. The exchangeability and non-exchangeability of drilling pipes with single shoulder tool joint produced in accordance with API standard with those of double shoulder tool joints indicating their structural features are marked as well. The comparison of stability coefficients of torques of drilling pipes in regard to the pipe body characterizing important operation parameters of nominal size of drilling pipe with double shoulder tool joint used in the overhaul repairs and sidetracking are provided.