Results 171 to 180 of about 5,239 (198)
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Wellbore instability mechanisms in very hard clay
2009This paper summarizes the results of an integrated program of laboratory measurements and numerical analyses that have been performed to understand the mechanisms of instability associated with drilling of high angle wells through unlithified mudstones/very hard clays.
Abdulhadi N.O. +3 more
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From Wellbore Instability and Grain Mixing to Injectivity Reduction
Rock Mechanics and Rock Engineering, 2019Wellbore instability has been registered and expected as one of the risks for successful delivery of horizontal injectors with open-hole stand-alone screens in depleted reservoirs. Special drill-in fluids and breaker fluids were designed to ensure stability of these wells prior to screen installations. Borehole collapse was expected in most cases after
Alvin W. Chan +2 more
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Wellbore Instability and Countermeasures in Offshore Bedding Shale Formations
Petroleum Science and Technology, 2010Abstract The properties of bedding shales are different from that of normal formations. Strength anisotropy is their outstanding feature. Experimental study and theoretical analysis show that this kind of anisotropy of bedding shales is the main reason of wellbore instability.
T. Qiang, D. Jingen, Y. Baohua
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Integration of Drilling and Geological Data To Understand Wellbore Instability
Journal of Petroleum Technology, 2001This article is a synopsis of paper SPE/IADC 67755, "Integration of Drilling and Geological Data To Understand Wellbore Instability," by L.E. Beacom, H. Nicholson, SPE, and R.I. Corfield, BP plc, originally presented at the 2001 SPE/IADC Drilling Conference, Amsterdam, 27 February-1 March.
L.E. Beacom, H. Nicholson, R.I. Corfield
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Friction-Induced Wellbore Instability Due to Drill String
2019In this chapter, we study numerically friction-induced wellbore instability due to frictional interaction between drill string and rock materials using torsional pendulum system. The classical Amontons–Coulomb (AC) friction laws are widely used for explaining the variety of sliding- and rotation-related phenomena, yet the AC laws fail to explain ...
Arun K. Singh, Nitish Sinha, T. N. Singh
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Explaining Anomalous Wellbore Instability Problems in Ghawar Khuff Reservoir
EAGE Workshop on Geomechanics in the Oil and Gas Industry, 2014Explaining Anomalous Wellbore Instability Problems in Ghawar Khuff Reservoir Khan, Khaqan; Abdul Halim, Ab Hamid and Anazi, Hamoud Abstract Saudi Aramco is aggressively pursuing drilling horizontal and multilateral wells in Khuff and Pre-Khuff reservoirs in the Ghawar Field to enhance gas production.
A.H. Ab Hamid, KK Khan, H.A.A. Al-Anazi
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Wellbore Instability Prediction Using Adaptive Analytics and Empirical Mode Decomposition
IADC/SPE Drilling Conference and Exhibition, 2018Abstract Wellbore stability is one determining factor to the success of drilling operations. A multitude of wellbore stability issues may still be encountered, despite all previous knowledge and experience, when drilling a certain formation.
Abraham Lin +3 more
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Sensitivity Analysis of Time Dependent Wellbore Instability and Application
2020In order to study the effects of heat transfer, solute diffusion, seepage and water diffusion, formation properties and wellbore stress state changes on wellbore stability, a multi-field coupling model of the time dependent wellbore instability for shale formations is built based on the constitutive equations including phenomenological equation and ...
De-yi Zou +2 more
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Managing Wellbore Instability in Sabah Basin of East Malaysia
SPE Asia Pacific Oil and Gas Conference and Exhibition, 2003Abstract Drilling experience in Alab and Samarang fields in the Sabah Basin highlighted the issue of wellbore stability in the region. A wide range of drilling problems has been experienced, ranging from tight-hole to overpull and stuck pipe, and a range of drilling fluid designs has been implemented.
C.P. Tan +5 more
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Predicting and Preventing Wellbore Instability: Tullich Field Development, North Sea
SPE Drilling & Completion, 2006Summary Innovative geomechanical, drilling, logging, and seismic techniques have been used to successfully develop a geologically complex discovery in the North Sea, Tullich field. With individual reservoir-unit thicknesses below the limit of seismic resolution, and a restricted depth window for completion, optimal placement of ...
K. A. Russell +6 more
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