The Analysis of Fracture and Damage Mechanics on the Wellbore Stability

Yong Wang; Li Qiang Tang; Yong Yang

doi:10.4028/www.scientific.net/KEM.324-325.25

Paper Titles

Modelling Intergranular Microfracture Using a Boundary Cohesive Grain Element Formulation
p.9

An Overview of the Surveillance Measurements Made to Support the Integrity of Magnox Steel Reactor Pressure Vessels
p.13

The Perfect Elastic-Viscoplastic Field at Mode I Quasi-Static Propagating Crack-Tip in Rate-Sensitive Material
p.17

Study on the Crack-Tip in the Pressure-Sensitive Dilatant Materials
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The Analysis of Fracture and Damage Mechanics on the Wellbore Stability
p.25

Dynamic Anti-Plane Behavior of the Interaction Between a Crack and a Circular Cavity in a Piezoelectric Medium
p.29

Fracture Behaviour and Temper Embrittlement Induced by NGS of Phosphorus
p.33

A Control Method of Grain-Boundary Brittleness by Step Cooling Technique
p.39

A Damage Model Containing Delamination in Composite Laminates
p.43

HomeKey Engineering MaterialsKey Engineering Materials Vols. 324-325The Analysis of Fracture and Damage Mechanics on...

The Analysis of Fracture and Damage Mechanics on the Wellbore Stability

Abstract:

In this paper, the conception of natural fracture stress in rocks is given according to mesomechanics analysis. The quantitative analysis about wellbore collapse and stratum fracture is made and the density range of drilling fluid is determined. The result is the same as the conclusion which was given by the traditional Mohr-Coulomb criterion in petroleum engineering. The new method of combining mesomechanics with fracture mechanics is used to study the wellbore stability in petroleum engineering, which can reveal the nature of the rock deformation mechanism and provide theoretical reference to design of the drilling engineering.

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Periodical:

Key Engineering Materials (Volumes 324-325)

Pages:

25-28

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.324-325.25

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Online since:

November 2006

Authors:

Yong Wang, Li Qiang Tang, Yong Yang

Keywords:

Meso-Fracture Mechanics, Natural Failure Stress, Wellbore Instability

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