Wellbore instability poses a significant problem for many wells drilled on the Northwest Shelf of Australia. With the discovery of the Wanaea and Cossack oilfields, research work has focused on an investigation involving the measurement of shale properties, analysis of operations and well logs and the application of this information to the analysis of wellbore stress and instability.
ABSJRACfWellbore instability poses a significant problem for many wells drilled on the Northwest Shelf of Australia. With the discovery of the Wanaea and Cossack oilfields, research work has focused on an investigation involving the measurement of shale properties, analysis of operations and weUlogs and the application of this information to the analysis of wellbore stress and instability.
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