Seabox – research project for seabed water treatmentRevitalising Tor

Ekofisk South – 2/4 VC starts up

person By Gunleiv Hadland and Björn Lindberg
Injection water from subsea installation Ekofisk VC (Victor Charlie) began to be pumped down well VC-03 on 28 September 2018. Well number two came on line just under a week later. The aim of this facility – an extension to the Ekofisk South project – was to increase waterflooding on the southern flank of the Ekofisk reservoir in order to maintain oil and gas production.
— Illustration of Ekofisk 2/4 VC (Victor Charlie). Illustration: ConocoPhillips
© Norsk Oljemuseum

An amended plan for development and operation (PDO) of Ekofisk South was approved by the Ministry of Petroleum and Energy on 7 September 2017. 

This involved installing a new seabed template with four water injection wells, and represented a continuation of the well-established Ekofisk production strategy based on waterflooding.[REMOVE]Fotnote: https://www.regjeringen.no/no/aktuelt/okt-utvinning-pa-ekofiskfeltet/id2570011/. 

 

historie, 2018, ekofisk sør oppstart Ekofisk 2/4 VC vanninjksjon,
Parts of the seabed template of Ekofisk 2/4 VC at the base in Tananger, ready for shipping in September 2017. Photo: Kjetil Alsvik/ConocoPhillips

The template was installed in September 2017, with a technical solution similar to that used on the seabed facilities already installed – Ekofisk 2/4 VA and 2/4 VB.[REMOVE]Fotnote: Pionér, no 2, ConocoPhillips, 2018. 

In addition to the structure itself, including wellheads and Xmas trees, the installation comprised control modules with umbilicals connected to the existing waterflooding system. 

The 2/4 VC facility receives injection water from Eldfisk 2/7 E, while power and control signals come from Ekofisk 2/4 M. It is run from the Ekofisk 2/4 K control room. 

When fully developed, overall injection capacity for this subsea installation will be 80 000 barrels per day through the four wells. 

The water pipeline and umbilical to 2/4 VB were extended to 2/4 VC. Well operations on the latter began on 24 May 2018 with a view to starting injection before the end of the year. 

Seabox – research project for seabed water treatmentRevitalising Tor
Published 16. September 2019   •   Updated 20. October 2019
© Norsk Oljemuseum
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