Estudio comparado de jets rígidos y rotatorios en limpieza de tubería mediante Coiled Tubing

Abstract

We show a comparative study of the technologies applied in the removal of scale, including Coiled Tubing Unit, Jet Vortex (rigid conventional technology) and Roto-Jet (new technology). These technologies allow minimize the reduction of the internal diameter of the tubing due to obstruction by corrosion and scale. Based on the records of reconditioning and well production, the problems arose during its life were examined. Thus, fall productions due to scale formation were identified. The type of scale was characterized based on the Oddo Tomson model, which sets the type of scaling tendency, arose from physicochemical analysis. Simulation of forces for the tool used and the impact pressure of the BHA, allowed to recommend the type of jet and suitable chemical treatment to each well. The respective economic analysis in order to determine the increased revenue associated with increased production after cleaning was performed. This allowed us to establish appropriate procedures to maximize production while taking into account cost reduction.