Well Drilling Optimization: Comprehensive Approach in Geology, Geomechanics, Technical and Economics (#2102)

Authors

Sánchez Cerón, Walter

Cortegana Rucoba, Oscar

Abstract

This research proposes a comprehensive methodology for the optimization of well drilling, addressing geological, geomechanical, technical and economic aspects. Using data from the Sheshea 126-17-1X well, located in the Ucayali basin, electrical logs from the LAS archives were examined to interpret the lithology of the subsurface formations. The study focuses on the calculation of the Mechanical Specific Energy (MSE) and its correlation with the mechanical properties of the rock, such as Unconfined Compressive Strength (UCS) and Confined Compressive Strength (CCS), complemented by the analysis of operational parameters such as Weight on Bit (WOB), Revolutions per Minute (RPM) and Torque. Likewise, seismic velocities (Vp and Vs) and elastic properties (Young's Modulus and Poisson's ratio) were calculated to determine the stiffness and deformability of the formations. According to these analyses, optimal Weight on Bit (WOB) ranges were determined, and an optimal Rate of Penetration (ROP) was obtained, achieving increases in ROP of up to 8.41%, a decrease in drilling time between 5.3% and 7.76%, and savings of a maximum of 8.33%. It is concluded that the integration of a geomechanical and operational analysis makes it possible to identify and correct inefficiencies regarding energy consumption during drilling, optimizing the process and reducing operating costs.