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Multilevel Completions in One Trip: Development and Deployment

The complete paper describes the hurdles that have prevented single-trip installation of upper and lower completions in the complex world of subsea and deepwater applications and examines the processes, technologies, and risk-mitigation steps that took a concept from pilot to successful deployment.

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Typically, the completion of certain deepwater wells will necessitate the separate deployment of sandface, intermediate, and upper completions. What if this could be achieved in a single trip? In the simplest terms, completing in a single trip reduces the overall completion time by half and more. The complete paper describes the hurdles that have prevented single-trip installation of upper and lower completions in the complex world of subsea and deepwater applications and examines the processes, technologies, and risk-mitigation steps that took a concept from pilot to successful deployment.

Introduction

Almost universally in offshore operations, operators have elected to deploy completions in multiple trips. Simple completions on land are often deployed in a single-trip fashion, and the deployment of cemented single-trip gas-lift systems on platform locations in the Gulf of Thailand is commonplace.

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