Results 181 to 190 of about 5,239 (198)
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New Safe Mud Weight Window Representations to Prevent Wellbore Instability
IADC/SPE Asia Pacific Drilling Technology, 2000Abstract Wellbore stability-related problems are one of the main sources of time and money losses in any drilling operation. This is the reason why, in the last years, many improvements have been made in this specific field of research. The improvements are based on a better knowledge of the mechanisms that originate rock failure. One of
Ramiro Liz-Losada, Leandro Alejano
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Application of Catastrophic Theory to Predict Wellbore Instability in Drilling
Proceedings of International Oil and Gas Conference and Exhibition in China, 2010Abstract Wellbore collapsing and formation leak off in drilling are all resulted from wellbore instability. So, researches on wellbore instability mechanism and its critical conditions can provide theoretical foundation on which is based to prevent wellbore instability in drilling.
Junfeng Shi +7 more
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Chemical-Mechanical Modeling of Wellbore Instability in Shales
1998Shales make up over 75% of drilled formations and cause over 90% of wellbore instability problems. The drilling of shale can result in a variety of problems ranging from washout to complete collapse of the hole. These problems are severe and for the industry have been estimated to be a conservative $ 500 million/year problem.
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The Effect of Water Activity in Shale on Wellbore Instability
Advanced Materials Research, 2012It is accepted that the water flux in/out of the shale during drilling is the key factor, which controls wellbore instability. This flow can be divided into two components:1) the hydraulic flow due to the difference between the wellbore and pore hydraulic pressure; 2) the osmotic flow due to the imbalance between activities of the shale and the ...
Tian Tai Li, Ming Zhang
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The wellbore instability mechanism in hot dry rock drilling
Geoenergy Science and Engineering, 2023Weiji Liu, Aoyu Li, Xiaohua Zhu
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Wellbore Instability Mechanism Evaluation by Computer Vision on Cavings
EAGE Middle East Geomechanics Workshop: Lessons Learned & New Frontiers, 2022N. Castillo +4 more
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Managing Wellbore Instability in Geologically Complex Field of Indian Offshore
GOTECHAbstract This paper addresses the challenges encountered during the drilling of horizontal and multilateral wells in the geologically complex Western offshore field of India. The Operator has been actively engaged in drilling such wells since the late 1980s.
N. P. Yahiya, V. K. Pandey, A. B. Desai
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Numerical modelling of wellbore instability: a review
2004Guangquan Xu +2 more
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