Numerical Simulations of Fracture Propagation and Sealing: Implications for Wellbore Strengthening

Released on by Saeed Salehi
preview-18

  • Numerical Simulations of Fracture Propagation and Sealing: Implications for Wellbore Strengthening Book Detail

  • Author : Saeed Salehi
  • Release Date : 2012
  • Publisher :
  • Genre : Fracture mechanics
  • Pages : 444
  • ISBN 13 :
  • File Size : 46,46 MB
DOWNLOAD BOOK

Numerical Simulations of Fracture Propagation and Sealing: Implications for Wellbore Strengthening by Saeed Salehi PDF Summary

Book Description: "To mitigate the small tolerance between pore pressure and fracture gradients an engineering practice referred to as "wellbore strengthening" is conducted to increase the fracture gradient. The method relies on propping and/or sealing the fractures with specially designed materials. Different competing theories exist for physical wellbore strengthening mechanisms which can be categorized into two groups. The first group explains that strengthening happens as a result of increasing wellbore hoop stress when fractures are sealed while the second group emphasis is on fracture tip isolation with suitable materials and enhancing fracture propagation pressure. The numerical models and lab experiments in previous studies have not fully replicated the operational phenomenon of wellbore strengthening. This study presents three-dimensional poro-elastic finite-element simulation's results for hydraulic fracture's initiation, propagation and sealing in the near wellbore region. The main objective of these simulations was to investigate the hypothesis of wellbore hoop stress increases when fractures are wedged and/or sealed during lost circulation control. To further support the numerical simulations' results, relevant field case studies, near wellbore fracture experiments and analytical models were also used. This study demonstrates that fracture sealing is not able to increase wellbore hoop stress more than its ideal state where no fracture exists, however, it helps to restore part or all of the wellbore hoop stress lost during fracture propagation. Field cases reveal the importance of connecting wellbore hoop stress restoration with leak off test's (LOT) interpretation and how wellbore condition can affect initial fracture gradient"--Abstract, leaf iii.

Disclaimer: www.yourbookbest.com does not own Numerical Simulations of Fracture Propagation and Sealing: Implications for Wellbore Strengthening books pdf, neither created or scanned. We just provide the link that is already available on the internet, public domain and in Google Drive. If any way it violates the law or has any issues, then kindly mail us via contact us page to request the removal of the link.

Lost Circulation and Wellbore Strengthening

Lost Circulation and Wellbore Strengthening

File Size : 48,48 MB
Total View : 8547 Views
DOWNLOAD

This book focuses on the underlying mechanisms of lost circulation and wellbore strengthening, presenting a comprehensive, yet concise, overview of the fundamen