Análise de dados de trajetória para quantificação da força de contato no modelo de torque & arraste

Abstract

Currently, the most oil reserves are discovered in more challenging environments to actual technology. Thus, it has been important the constant development of research and Technologies to support the diverse fields involved on oil and gas industry. The well engineering stands out on this paper, the one that is responsible to design his structure and trajectory. Mechanical failure in drillpipes is a costly event to oil and gas industry, because it causes the stop of all operation that result on non-productive time, in this way many studies are performed in a way to prevent those operational problems. Torque, tension, drag, compression and bending can be correctly predict for kwon well trajectory, but undesired alterations on well geometry during the perforation process leads to errors and uncertainties in stress state prediction. Proposes to predict these trajectory uncertainties by statistical analysis of previously drilled wells and categorized by theirs correlations. The data analysis enables a fictitious trajectory modeling which will use to prevent drag forces additional loads on drillpipes induced be trajectory deviation. Developed in this dissertation some modules which enables directional monitoring, trajectory data analysis methodology, fictional trajectory design and uses all of theses funcions to quantify contact forces acting on drillpipes by using torque and drag model equations making possible a better perforation design, duo to use of executed trajectory data.