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Real-Time Visualization and Geometry Reconstruction of Large Oil and Gas Boreholes Based on Caliper Database

  • Fabiana R. LetaEmail author
  • Esteban Clua
  • Diego C. Barboza
  • João Gabriel Felipe M. Gazolla
  • Mauro Biondi
  • Maria S do Souza
Chapter
Part of the Augmented Vision and Reality book series (Augment Vis Real, volume 4)

Abstract

The evaluation of technical and economical viability before starting the drilling process of a gas or oil reserve is very important and strategic. Among other attributes, the soil structure around the borehole must be analyzed in order to minimize the risks of a collapse. This stability analysis of a gas or oil reserve is a challenge for specialists in this area and a good result at this stage could bring a deep impact in reduction of drilling costs and security. A tool known as caliper [1] is inserted into the drilling spot to perform a series of measurements used to evaluate the well’s viability. For each position along the borehole, information such as sensors’ position, orientation, well’s resistivity, and acoustic data are obtained and recorded. These data allow the user to find flaws in the soil, leaving to the geologist the decision whether the well is feasible or not, and help them to study possible actions to minimize its usage risk. Currently, the data obtained by the caliper are used for the visualization of individual sections of the well, projected in a bi-dimensional plane, considering a cylinder projection. However, an overview of the borehole’s entire structure is necessary for a higher quality analysis. This work proposes a novel technique for a precise geometry reconstruction of the borehole from these data, allowing the geologist to visualize the borehole, making easier to find possible critical points and allowing an intuitive visualization of a large set of associated data. The three-dimensional geometry reconstruction is made from data collected from the caliper log, which includes the tool orientation and sensors’ measures for each section. These measures are used as control points for the construction of smooth layers, through splines interpolation [2]. Finally, the sections are joined in sequence to form a polygonal mesh that represents a reliable vision of the borehole in three dimensions.

Keywords

Well bore model Oil well visualization Caliper log Three-dimensional visualization Closed natural cubic splines 

Notes

Acknowledgments

The authors would like to acknowledge Petrobras Oil for the financial support.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Fabiana R. Leta
    • 1
    Email author
  • Esteban Clua
    • 2
  • Diego C. Barboza
    • 2
  • João Gabriel Felipe M. Gazolla
    • 2
  • Mauro Biondi
    • 1
  • Maria S do Souza
    • 1
  1. 1.Mechanical Engineering Department, Computational and Dimensional Metrology LaboratoryUniversidade Federal Fluminense—UFFNiteróiBrazil
  2. 2.Computer Science InstituteUniversidade Federal Fluminense—UFFNiteróiBrazil

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