Operations

The first oil from the Ekofisk field was produced by the Gulftide jack-up rig in 1971.
All told, a total of 35 installations have been operational in the Greater Ekofisk Area, and they are described here.
Since 1998 14 steel platforms as well as the top section of the Ekofisk tank, designated Ekofisk I, have been removed.

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Further Development
Waterflooding
Waterflooding – also known as water injection – is one possible way to achieve improved oil recovery (IOR) from a reservoir. Its wide use reflects the frequent availability of cheap water in large quantities. Seawater is used offshore, usually after treatment.
HSE
Safety on Ekofisk – and on the NCS
The Norwegian authorities want the country’s petroleum sector to be the best in the world for health, safety and the environment (HSE). And Ekofisk operator ConocoPhillips aims to improve safety continuously.
HSE
Getting the timing right
The issue of work schedules for offshore personnel has been subject to constant discussion between government, employers and unions – leading to radical changes over 50 years.
Further Development
Ekofisk from 2008 to 2017
Click through the photo carousel under the look-up from year to year from 2008 to 2017.
It shows the development of the Ekofisk area with platforms, pipelines and underwater installations.
Further Development
Advanced reservoir monitoring in place
A total of 4 000 sensors spread at 50-metre intervals along 240 kilometres of cable were installed on the seabed over the Ekofisk field from March-September 2010.
Platforms
Ekofisk 2/4 Z
This installation is a wellhead platform in the Ekofisk Complex.
HSE
Controlling the airspace
Helicopter flights to and from oil installations on the continental shelf (NCS) are a necessary part of Norway’s offshore operations.
HSE
Telemedicine with the health minister
ConocoPhillips was an early adopter of telemedicine – the remote diagnosis and treatment of patients by means of telecommunications technology.
HSE
SAR team honoured for saving life
When the alarm sounds, not many minutes pass before Ekofisk’s search and rescue (SAR) helicopter is in the air. It was certainly quick off the mark when a gas leak was reported on Britain’s Elgin field in March 2012.
HSE
Supply ship collides with 2/4 J
21 January 2011: Supply ship collides with 2/4 J
Despite the introduction of round-the-clock logistical coordination from land, supply ships continued to collide with platforms in the Greater Ekofisk Area.
HSE
Vessel collision with 2/4 W
The 5 000-tonne multipurpose vessel Big Orange XVIII ran into Ekofisk 2/4 W on 8 June 2009, a fine summer night with a full moon, light breeze, a temperature of 10°C and cloudy skies.
HSE
Safe to fly
A number of glaring headlines about offshore helicopters which had suffered problems appeared in Norwegian media during the autumn of 2006.
HSE
Dropped objects pose safety risk
A mechanic had to be hospitalised after being hit by a 390-kilogram exhaust gas cooler on 13 January 2006, the third case of a dropped object on Ekofisk in the space of a week.
Further Development
Water treatment with CTour
A new method for treating produced water before discharging it to the sea was introduced by ConocoPhillips in 2006. Known as CTour, this was intended to remove dissolved oil and other components.
HSE
Supply ship collides with Ekofisk platform
A full alarm was sounded at the Ekofisk Complex on the morning of 3 June 2005, when a supply ship collided with a platform and 440 oil workers prepared to take to the lifeboats.
HSE
Earthquake hits Ekofisk
An earthquake struck the Greater Ekofisk Area on 7 May 2001, when the 852 workers felt the installations swaying and various small loose objects fell down. No personal injuries were reported.
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