Evolution of the Snorre Field downhole completion systems
This paper discusses the development and evolution of cost-effective downhole completion systems for the Snorre Field Tension Leg Platform (TLP) and Subsea Production System (SPS). Included is a discussion of operational experiences that influenced the evolution. Also included in the paper are specific examples of how the completion times were reduced. The completion design for the subsea wells includes some new features compared to previous through flow line (TFL) completions. During the design process cost, safety and simplicity have been the driving forces for selecting equipment. Previous TFL completions have normally included a H-member, dual packers, sliding sleeves and nipples in each tail pipe. This design required plugs and standing valves to be an integral part of the completion string, requiring high reliability of the TFL retrievable components. The completion design used for the Snorre SPS wells uses a minimum amount of tubular components. The design does not require any TFL retrievable components to be installed during production or injection. This minimizes the number of flow restrictions and thereby reduces the tendency for scaling, erosion and corrosion on the TFL retrievable components. All tubing retrievable components, including the Y-block, are qualified and are considered standard today.
- OSTI ID:
- 382623
- Report Number(s):
- CONF-9410272--
- Country of Publication:
- United States
- Language:
- English
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