Casing/cementing/zonal isolation

Isolation Barrier Valves Installed Successfully in Deepwater Gulf of Guinea

A major operator manages multiple deepwater projects in the Gulf of Guinea. This paper describes one of these, a recent 44-well project.

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A major operator manages multiple deepwater projects in the Gulf of Guinea. This paper describes one of these, a recent 44-well project. The operator required an ISO 28781-qualified bidirectional subsurface isolation barrier valve (IBV) to be installed in each well. This paper presents the results of the IBV deployment in the field.

Introduction

The Egina field was discovered in 2003 in Oil Mining Lease 130 located in deep water (1150–1750 m) approximately 200 km offshore Port Harcourt, Nigeria.

Subsurface IBVs have become commonplace in lower-sandface-­completion installations.

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