Drilling

Development of Work Flow To Manage Fatigue of Bottomhole Assemblies

A new fatigue-management work flow provides drillers with a tool to simulate and predict the life expectancy of bottomhole assemblies (BHAs) before fatigue causes problems.

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Fig. 1—S/N curve.

A new fatigue-management work flow provides drillers with a tool to simulate and predict the life expectancy of bottomhole assemblies (BHAs) before fatigue causes problems. This new feature allows engineers to calculate and monitor the fatigue life. It also helps engineers to take appropriate action before a failure occurs downhole or to provide information to the maintenance team for preventive maintenance. Overall, this new approach allows engineers to manage drilling risks related to fatigue before any negative consequences.

Introduction

The oil and gas industry continues to drill wells that are deeper, more complex, and have greater extended reach and dogleg severity.

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