Basic aspects of rock mechanics

Basic aspects of rock mechanics

Borehole pressure required to reach tensile failure depends on:

  • tensile strength of the rock;
  • state of stress in the formation;
  • orientation of the wellbore with respect to the state of stress;
  • shape of the wellbore cross-section;
  • wellbore fluid penetration into the rock;
  • chemical interaction between the wellbore fluids and the rock.

1. State of stress - Definitions, conventions State of stress:

The state of stress is . . .

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