Results 151 to 160 of about 2,284,708 (212)

Modeling Thermal Effects on Wellbore Stability

Proceedings of Trinidad and Tobago Energy Resources Conference, 2010
Abstract Field evidence indicates that the thermal regime in wellbore considerably affects the wellbore stability in directional and horizontal wells. However, the temperature effects have not been investigated thoroughly in existing literature, and the effects of drilling fluid flow and various heat sources on the behavior of formation ...
D. Nguyen, S. Miska, M. Yu, A. Saasen
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The Influence of Stress Unloading in Near-Wellbore Formations on Wellbore Stability

60th U.S. Rock Mechanics/Geomechanics Symposium
ABSTRACT: This paper derives the stress distribution in the vicinity of the wellbore in the Cartesian coordinate system of the bedding plane through coordinate transformation. Considering the stress unloading in the near-wellbore region, a new model for analyzing arbitrary deviated wellbore stability was ...
Zhiqiang Tang, Hao Peng, Yanbin Liu, Dongdong Song   +3 more
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Quality Assurance of Wellbore Stability Analyses

SPE/IADC Drilling Conference and Exhibition, 2011
Abstract It has become clear that many wellbore stability studies suffers from various inconsistencies. These lead to incorrect results, or results that may not be extrapolated to other well configurations. In this paper typical wellbore fracturing and collapse models are investigated with respect to the accuracies in the ...
Bernt S. Aadnoy
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Wellbore Stability

Journal of Petroleum Technology, 1984
Distinguished Author Series articles are general, descriptive representations that summarize the state of the art in an area of technology by describing recent developments for readers who are not specialists in the topics discussed. Written by individuals recognized as experts in the area, these articles provide key references to more definitive work ...
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Horizontal Wellbore Stability for Open hole Completions

Proceedings of SPE Annual Technical Conference and Exhibition, 1989
Abstract Horizontal well drilling and production have been increasingly important to the oil industry in recent years. The potential of significant increase in oil or gas production from a horizontal well will be very attractive as drilling and completion costs diminish and new technologies are developed to address problems concerning ...
G-F. Fuh, P. K. Loose
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Automation in Wellbore Stability Workflows

SPE Intelligent Energy International, 2012
Abstract Wellbore instability accounts for a significant amount of nonproductive time. Continuous improvement of today's technologies enables real-time analysis of acquired data to identify and remediate potential drilling hazards. Efforts toward the automation of relevant steps and processes for real-time wellbore stability modeling ...
Stefan Wessling, Anne Bartetzko, Jianyong Pei, Thomas Dahl   +3 more
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The impact of sidetracking on the wellbore stability

Advances in Energy Research, 2015
In the past sidetracking was the means to bypass a damaged zone or to correct the direction of a wellbore. Nowadays, this method is very common and useful in relocating the bottom of a wellbore in a more productive zone and consequently enhancing the production of a reservoir by saving a significant amount of time and money.
Ayub Elyasi, Kamran Goshtasbi
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Wellbore Stability Beyond Mud Weight

SPE Middle East Oil & Gas Show and Conference, 2021
Abstract Drilling oil and gas wells with stable and good quality wellbores is essential to minimize drilling difficulties, acquire reliable openhole logs data, run completions and ensure well integrity during stimulation. Stress-induced compressive rock failure leading to enlarged wellbore is a common form of wellbore instability ...
Khaqan Khan, Mohammad Altwaijri, Sajjad Ahmed   +2 more
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On the Mechanical Stability of lnclined Wellbores

SPE Drilling & Completion, 1996
Summary Consideration of the stress field around an arbitrarily oriented borehole shows that in an extensional stress regime (σv σH>σh), wellbores parallel to the direction of minimum horizontal principal stress are the least prone to compressive shear failure (breakout). The most stable deviation angle (from the vertical) depends
Zhou, S., Hillis, R., Sandiford, M.
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Pore Fluid and Wellbore Stabilities

Proceedings of International Meeting on Petroleum Engineering, 1992
Abstract A method for estimating the borehole pressure or mud weight, required for maintaining the stability of a deviated wellbore, is presented in this paper. The critical borehole pressure is calculated by incorporating elastic stresses on the hole surface into a failure criterion of the rock.
C. H. Yew, Gefei Liu
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