An Experimental Study of Pressuremeter Testing Under Polyaxial Boundary Stress Condition

  • Lang Liu
  • Haifeng Fu
  • Rick Chalaturnyk
  • Dingwei Weng
  • Gonzalo Zambrano
  • Steve Zheng
Conference paper

Abstract

The in-situ stress is a critical factor that needs to be assessed in the development of a safe and sustainable oil and gas recovery, but it is also difficult to be accurately measured with the existing methods, especially in the soft sedimentary formations. In this paper, pressuremeter testing, as one of the promising approaches for the in-situ stress determination, is evaluated under a well-controlled polyaxial boundary stress condition. The experiment setup and test procedure are described. The data for the tests under three different stress regimes are presented. The data is corrected for the eccentricity and the movement of the tool during the test to show the non-uniform deformation of borehole in the testing plane. The discrepancy of pressure-expansion curves obtained at different axes is in a good agreement with the theoretical findings showing the effect of the in-situ stress anisotropy on the cavity expansion.

Keywords

Pressuremeter testing Stress anisotropy 

Notes

Acknowledgement

This work was financially supported by the Foundation CMG Industrial Research Consortia. The technical support from J. Brandl at the University of Alberta and the lab technicians at RIPED is also gratefully acknowledged.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Lang Liu
    • 1
  • Haifeng Fu
    • 2
  • Rick Chalaturnyk
    • 1
  • Dingwei Weng
    • 2
  • Gonzalo Zambrano
    • 1
  • Steve Zheng
    • 1
  1. 1.Department of Civil and Environmental EngineeringUniversity of AlbertaEdmontonCanada
  2. 2.Research Institute of Petroleum Exploration and Development of PetroChinaLangfangChina

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