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Keywords: wellbore instability
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Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, January 29–31, 2018
Paper Number: SPE-189365-MS
... issues associated with wellbore instability. The presentation of a case history will illustrate the historical mud weights and properties used to drill offset wells, and the corresponding hole stability problems. The comparative analysis demonstrates how the use of a higher mud weight eliminated well...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, October 24–26, 2011
Paper Number: SPE-148049-MS
... major issue: Production logs could not be run in short strings. Analyses of the wells included in this study showed major complications in 7 out of 13 wells which involved high cost and low efficiency. Fig.1 Wellbore instability in deviated wells. Wells with various suffixes: D=Deviated, DS...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, October 24–26, 2011
Paper Number: SPE-148564-MS
... time, the greater the probability of wellbore instability. Casing Drilling reduces the total amount of time that the well is being drilled by eliminating tripping, casing running, and mitigating NPT due to drilling problems. Several wellbore stability concerns, such as hole pack off, barite sag...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, October 24–26, 2011
Paper Number: SPE-148475-MS
... personnel. The main objective was to elaborate a fit-for-purpose program to drill 17½" hole with 13⅜" 72# L80 BTC casing to primary prevent losses, avoid wellbore instability problems, and enhance on- bottom drilling performance by preserving well integrity. Risk assessment workshops were held to identify...
Proceedings Papers

Paper presented at the Middle East Drilling Technology Conference & Exhibition, October 26–28, 2009
Paper Number: SPE-124087-MS
... differential sticking Fluid Dynamics calcium carbonate flow in porous media drilling fluid formulation polymer fluid loss drilling fluid selection and formulation drilling fluid property Upstream Oil & Gas concentration application fracture Saudi Arabia wellbore instability society of...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, October 20–22, 2003
Paper Number: SPE-85304-MS
... Abstract The presence of microfractures is now recognized as a common cause of severe wellbore instability, particularly in ultra-low permeability rocks such as shales and some limestones. In unstable microfractured formations, it is important to avoid pressurizing the fractures with drilling...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, October 20–22, 2003
Paper Number: SPE-85344-MS
... assessment of wellbore stability in shales, the analyses need to take into account these complex coupled time-dependent processes. Introduction Wellbore instability in shale formations is a major cause of drilling delays and suspension of wells prior to reaching the target. This instability can be a...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference, November 8–10, 1999
Paper Number: SPE-57575-MS
... design drilling operation deviation mud weight wellbore instability spe 57575 reservoir characterization klimento instability rock strength wellbore stability evaluation egypt Copyright 1999, SPE/IADC Middle East Drilling Technology Conference This paper was prepared for presentation at the...

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