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Geomechanics for DrillersDRIL/GEOME

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Who should attend?

  • This training course aims to ensure the understanding of geomechanics-related drilling problems such as wellbore stability and fluid losses, and to be aware of the techniques used in the petroleum industry to mitigate these phenomena.
Audience :
  • Engineers and supervisors involved in drilling operations.

Level : Proficiency

Course Content

  • Introduction TO GEOMECHANICS IN THE PETroLEUM INDUSTry

      • Review of all the applications of geomechanics in the reservoir and drilling fields illustrated with real cases.

  • THEORETICAL BASES USEFUL FOR DRILLING APPLICATIONS

      • Stresses, deformations, elasticity.
      • Connection between stress, pressure and temperature.
      • Rock tensile failure.
      • Rock shearing failure.
      • Laboratory measurements of tensile and rupture properties.
      • Geomechanical model of wells (formation pressure, stresses and mechanical properties) and calibration from laboratory measurements and data and well tests.
      • Different types of pressure tests in drilling, in particular the leak-off test.

  • STRESSES & RUPTURE MECHANISMS AROUND THE WELL

      • Radial, axial and tangential stresses.
      • Shearing failure conditions and calculation of the minimum mud weight.
      • Conditions of tensile failure and fracture propagation and calculation of the maximum mud weight.
      • Impact of the well path.
      • Impact of reservoir production of infill drilling in already producing reservoirs.

  • APPLICATION

      • Exercise based on one or several real cases gathering the major issues of reservoir geomechanics.
      • Knowledge assessment.

Learning Objectives

  • Upon completion of the course participants will be able to:
  • acquire the basic geomechanical knowledge useful for drilling operations,
  • diagnose the mechanisms of wellbore instability and fluid losses including already producing fields,
  • identify the drilling-related geomechanical parameters as well as the means to measure or assess them from well data and laboratory measurements,
  • perform mud weight calculations that define, in addition to pore pressure, the drillability window, and make it possible to build the well architecture.

Ways & Means

  • Application exercises adapted to drilling situations.