Three-dimensional analysis for allowable breakout width in vertical well
by Marwa Ali Al-Nuumani; Adel M. Al-Ajmi; Mohammed Hamed Al-Aamri; Hamoud K. Al-Hadrami
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 33, No. 2, 2023

Abstract: In drilling operation, breakout formations with allowable width can be accepted although it is a type of formation damages. The study presents a geomechanical analysis which mimics field conditions using a new 3D geomechanical model to predict the allowable breakout width in vertical wells using Mogi-Coulomb criterion with the linear elastic consecutive solution of Kirsch. The classical Moher-Coulomb criterion is used to verify the effect of the intermediate principal stress in determining the breakout width. The impact of the rock parameters and in situ stresses are studied in different in situ stress regimes. It has been found that the friction angle, cohesion, and the minimum horizontal stress are the most critical parameters on the breakout width formation. The studied fields show that using Mogi-Coulomb law gives results within the applied field conditions. Furthermore, adopting the classical Moher-Coulomb failure criterion in the analysis will raise uncertainty in borehole breakout width predictions. [Received: November 3, 2022; Accepted: January 11, 2023]

Online publication date: Wed, 17-May-2023

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Oil, Gas and Coal Technology (IJOGCT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com