Stability analysis of vertical boreholes using a three-dimensional hoek-brown strength criterion

Lianyang Zhang, K. C. Radha

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Borehole stability analysis plays an important role in the design of oil and gas well drilling. A main aspect of borehole stability analysis is the selection of an appropriate rock strength criterion. The two most commonly used rock strength criteria in borehole stability analysis are the Mohr-Coulomb criterion and the Drucker-Prager criterion. However, the Mohr-Coulomb criterion ignores the effect of the intermediate principal stress and is too conservative in estimating the critical overbalance pressure required to maintain borehole stability; while the Drucker-Prager criterion overestimate the effect of the intermediate principal stress and may result in non-sensible stability predictions. In this paper, a simple model based on a three-dimensional (3D) Hoek-Brown strength criterion is developed for stability analysis of vertical boreholes. Examples are presented to show the application of the 3D Hoek-Brown strength criterion for analyzing the stability of vertical boreholes and the results are compared with those using the Mohr-Coulomb and Drucker-Prager criteria. It shows that the 3D Hoek-Brown strength criterion predicts critical overbalance pressure values that are less conservative than those predicted by the Mohr-Coulomb criterion yet are not as unconservative as those predicted by the Drucker-Prager criterion.

Original languageEnglish (US)
Title of host publicationGeotechnical Special Publication
Pages283-292
Number of pages10
Edition199
DOIs
StatePublished - 2010
EventGeoFlorida 2010: Advances in Analysis, Modeling and Design Conference - West Palm Beach, FL, United States
Duration: Feb 20 2010Feb 24 2010

Other

OtherGeoFlorida 2010: Advances in Analysis, Modeling and Design Conference
CountryUnited States
CityWest Palm Beach, FL
Period2/20/102/24/10

Fingerprint

borehole stability
Boreholes
Coulomb criterion
stability analysis
borehole
oil well
gas well
rock
Rocks
Well drilling
drilling
prediction
effect
Gases

Keywords

  • Boreholes
  • Stability
  • Three-dimensional analysis

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering
  • Building and Construction

Cite this

Stability analysis of vertical boreholes using a three-dimensional hoek-brown strength criterion. / Zhang, Lianyang; Radha, K. C.

Geotechnical Special Publication. 199. ed. 2010. p. 283-292.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhang, L & Radha, KC 2010, Stability analysis of vertical boreholes using a three-dimensional hoek-brown strength criterion. in Geotechnical Special Publication. 199 edn, pp. 283-292, GeoFlorida 2010: Advances in Analysis, Modeling and Design Conference, West Palm Beach, FL, United States, 2/20/10. https://doi.org/10.1061/41095(365)25
Zhang, Lianyang ; Radha, K. C. / Stability analysis of vertical boreholes using a three-dimensional hoek-brown strength criterion. Geotechnical Special Publication. 199. ed. 2010. pp. 283-292
@inproceedings{724383c35a114e7fb49d27e3bbe3678a,
title = "Stability analysis of vertical boreholes using a three-dimensional hoek-brown strength criterion",
abstract = "Borehole stability analysis plays an important role in the design of oil and gas well drilling. A main aspect of borehole stability analysis is the selection of an appropriate rock strength criterion. The two most commonly used rock strength criteria in borehole stability analysis are the Mohr-Coulomb criterion and the Drucker-Prager criterion. However, the Mohr-Coulomb criterion ignores the effect of the intermediate principal stress and is too conservative in estimating the critical overbalance pressure required to maintain borehole stability; while the Drucker-Prager criterion overestimate the effect of the intermediate principal stress and may result in non-sensible stability predictions. In this paper, a simple model based on a three-dimensional (3D) Hoek-Brown strength criterion is developed for stability analysis of vertical boreholes. Examples are presented to show the application of the 3D Hoek-Brown strength criterion for analyzing the stability of vertical boreholes and the results are compared with those using the Mohr-Coulomb and Drucker-Prager criteria. It shows that the 3D Hoek-Brown strength criterion predicts critical overbalance pressure values that are less conservative than those predicted by the Mohr-Coulomb criterion yet are not as unconservative as those predicted by the Drucker-Prager criterion.",
keywords = "Boreholes, Stability, Three-dimensional analysis",
author = "Lianyang Zhang and Radha, {K. C.}",
year = "2010",
doi = "10.1061/41095(365)25",
language = "English (US)",
isbn = "9780784410950",
pages = "283--292",
booktitle = "Geotechnical Special Publication",
edition = "199",

}

TY - GEN

T1 - Stability analysis of vertical boreholes using a three-dimensional hoek-brown strength criterion

AU - Zhang, Lianyang

AU - Radha, K. C.

PY - 2010

Y1 - 2010

N2 - Borehole stability analysis plays an important role in the design of oil and gas well drilling. A main aspect of borehole stability analysis is the selection of an appropriate rock strength criterion. The two most commonly used rock strength criteria in borehole stability analysis are the Mohr-Coulomb criterion and the Drucker-Prager criterion. However, the Mohr-Coulomb criterion ignores the effect of the intermediate principal stress and is too conservative in estimating the critical overbalance pressure required to maintain borehole stability; while the Drucker-Prager criterion overestimate the effect of the intermediate principal stress and may result in non-sensible stability predictions. In this paper, a simple model based on a three-dimensional (3D) Hoek-Brown strength criterion is developed for stability analysis of vertical boreholes. Examples are presented to show the application of the 3D Hoek-Brown strength criterion for analyzing the stability of vertical boreholes and the results are compared with those using the Mohr-Coulomb and Drucker-Prager criteria. It shows that the 3D Hoek-Brown strength criterion predicts critical overbalance pressure values that are less conservative than those predicted by the Mohr-Coulomb criterion yet are not as unconservative as those predicted by the Drucker-Prager criterion.

AB - Borehole stability analysis plays an important role in the design of oil and gas well drilling. A main aspect of borehole stability analysis is the selection of an appropriate rock strength criterion. The two most commonly used rock strength criteria in borehole stability analysis are the Mohr-Coulomb criterion and the Drucker-Prager criterion. However, the Mohr-Coulomb criterion ignores the effect of the intermediate principal stress and is too conservative in estimating the critical overbalance pressure required to maintain borehole stability; while the Drucker-Prager criterion overestimate the effect of the intermediate principal stress and may result in non-sensible stability predictions. In this paper, a simple model based on a three-dimensional (3D) Hoek-Brown strength criterion is developed for stability analysis of vertical boreholes. Examples are presented to show the application of the 3D Hoek-Brown strength criterion for analyzing the stability of vertical boreholes and the results are compared with those using the Mohr-Coulomb and Drucker-Prager criteria. It shows that the 3D Hoek-Brown strength criterion predicts critical overbalance pressure values that are less conservative than those predicted by the Mohr-Coulomb criterion yet are not as unconservative as those predicted by the Drucker-Prager criterion.

KW - Boreholes

KW - Stability

KW - Three-dimensional analysis

UR - http://www.scopus.com/inward/record.url?scp=79959578756&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79959578756&partnerID=8YFLogxK

U2 - 10.1061/41095(365)25

DO - 10.1061/41095(365)25

M3 - Conference contribution

AN - SCOPUS:79959578756

SN - 9780784410950

SP - 283

EP - 292

BT - Geotechnical Special Publication

ER -