Latest Concepts of Plastic-Lined Water Injection Flowlines for Deepwater Field Developments
- Mathieu Beunier (Saipem SA) | Francois Regis Pionetti (Saipem SA) | Kimon Ardavanis (SaiBos Services) | Eric Gourdoux (Saipem SA) | Benjamin Mauriès (Saipem SA) | Julien Verdeil (Saipem SA) | Khalid Lachheb (Saipem SA)
- Document ID
- Society of Petroleum Engineers
- SPE Projects, Facilities & Construction
- Publication Date
- June 2009
- Document Type
- Journal Paper
- 13 - 18
- 2009. Society of Petroleum Engineers
- 6.5.2 Water use, produced water discharge and disposal, 4.6.2 Liquified Natural Gas (LNG), 4.2.3 Materials and Corrosion, 4.3.4 Scale, 4.2.4 Risers, 4.2 Pipelines, Flowlines and Risers
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In deepwater, corrosion protection of flowlines is becoming a major issue as fluid (production or injection) aggressiveness, temperature, and pressure increase. Conventional corrosion allowance of carbon steel flowlines leads to excessive procurement costs, installation weight, and welding thickness, resulting in noneconomical solutions. Clad flowlines present excellent corrosion protection, but the implementation of this technology results in quite expensive solutions with additional NDT difficulties during installation.
An interesting alternative to achieve an acceptable corrosion protection in most conditions is the use of plastic liners. However, plastic lining has been mostly limited up to now to reel lay. Transposing this technology to J-lay results in a complex quad joint design, inducing more welding and NDT difficulties at every offshore joint. Therefore, the use of this attractive technology in J-lay implies the development of a specific field joint design.
SAIPEM has developed and patented an innovative and cost effective field-joint system (the Inconel Field Joint). This system maintains the corrosion barrier across girth weld locations along the flowline. This technology has minimal impact on the offshore laying rate because of performing standard steel to steel welds. It is associated with an integrated lining solution including all piping accessories by rotolining.
This paper presents the main characteristics of the IFJ system for a typical deepwater water injection application, and discusses the results of the extensive qualification program carried out over the last 2 years, including swage lining, machining, sleeve insertion, leak test, and welding tests.
|File Size||1 MB||Number of Pages||6|
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