Title

Full Fluid-Solid Cohesive Finite-Element Model to Simulate Near Wellbore Fractures

Abstract

This paper presents finite-element simulation for hydraulic fracture's initiation, propagation, and sealing in the near wellbore region. A full fluid solid coupling module is developed by using pore pressure cohesive elements. The main objective of this study is to investigate the hypothesis of wellbore hoop stress increase by fracture sealing. Anisotropic stress state has been used with assignment of individual criteria for fracture initiation and propagation. Our results demonstrate that fracture sealing in cannot increase the wellbore hoop stress beyond its upper limit when no fractures exist. However, this will help to restore part or all of the wellbore hoop stress lost during fracture propagation.

Department(s)

Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Cohesive Zone Model; Fracture Sealing; Fracture Width; Hoop Stress Restoration; Wellbore Hoop Stress; Wellbore Strengthening; Hydraulic Fracturing; Oil Field Equipment; Residual Stresses; Restoration; Finite Element Method

International Standard Serial Number (ISSN)

1950738

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2015 American Society of Mechanical Engineers (ASME), All rights reserved.

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