Oljedirektoratet

IOR prize 2012

28/08/2012 The Norwegian Petroleum Directorate’s prize for improved recovery for 2012 is awarded to the subsurface environment on the Oseberg field.

Director general Bente Nyland awards the prize to Statoil CEO Helge Lund

Director general Bente Nyland awards the prize to Statoil CEO Helge Lund. (Photo: Bjørn Stuedal) 


The experts in Statoil receive the award for their work on gas injection.

Director General Bente Nyland says that the people who work on the Oseberg subsurface are worthy recipients of the IOR prize.

“Thorough technical work enables good and profitable decisions. The work, particularly regarding reservoir aspects, and the expert recommendations we have seen ever since the field started producing and up to the present, are characterised by a long-term mindset, not a desire for short-term rewards,” says Nyland.

This is the first time the NPD has awarded the IOR prize for gas injection, even though this has been a very successful method that has yielded considerable additional income from the Norwegian shelf.

Gas injection is one of multiple measures that have resulted in substantially increased oil volumes from Oseberg. The NPD estimates that gas injection has yielded more than 60 million standard cubic metres (Sm3) (about 400 million barrels) of additional oil from the field than would be the case with just water injection. This is more than an entire Veslefrikk field. The field will continue to produce for a long time, and opens up new opportunities for use of technology promoted by enterprising employees.

It started with the TOGI project (see fact box), and continued with re-injection of own gas to increase oil production from the field. Important decisions have been made in several rounds, most recently in 2011, relating to optimisation and continuation of gas injection. This has further increased recovery.

“Oseberg paved the way for many other fields, also by importing gas from another field. The very successful use of gas injection resulted in major ripple effects for other fields”, according to the Director General.

Gas has been injected on a total of 28 fields on the Norwegian shelf. The NPD has estimated that Norway extracts about 350 million Sm3 (2200 million barrels) more oil from the fields using gas injection. This is more oil than the expected oil resources on Johan Sverdrup, and is approximately the size of the Gullfaks field.

“Use of gas injection deserves a prize, and perhaps we should have awarded it sooner. Injecting gas to recover more oil, and then producing most of this gas later, is a good example of long-term resource utilisation”, says Nyland:

“The Petroleum Act also requires that companies take such considerations into account. These days, with high oil prices and relatively low gas prices, further use of gas injection is relevant for both operating fields and upcoming field developments. Both courage and determination were needed to implement the TOGI project – not least because the development was already approved with water injection. This meant that Oseberg had to be considered again in the Norwegian Parliament (the Storting).”

The Ministry of Petroleum and Energy (MPE) recently approved the plan for removal of the TOGI facility, which has thus completed its course. In its day, it was also an important precondition for the success of Troll Olje, which was based on subsea templates.

The bold decision to use gas injection as the main method for oil recovery on Oseberg has continuously been followed up by reservoir engineers, first in Hydro, then Statoil. The planned date for gas blowdown has been postponed multiple times, based on the experts’ recommendations. This is because the company has determined that it is still profitable to continue injecting own gas to maintain the pressure. The experts have supported this position, most recently in an important decision in 2011, and also during periods when more export gas was demanded.

“We want to give credit to the experts who have contributed to making gas injection on Oseberg a success story. They have really made it happen! We hope that this will inspire continued solid technical work on the Norwegian shelf along with even more good, and sometimes audacious, decisions,” says Nyland.

 

Updated: 29/08/2012

Latest news

Drilling permit for well 30/11-15
30/05/2023 The Norwegian Petroleum Directorate (NPD) has granted Aker BP ASA drilling permit for well 30/11-15, cf. Section 13 of the Resource Management Regulations.
Questions about exploration? AI Neil at your service!
26/05/2023 Do you want to learn more about exploration on the Norwegian shelf, but don’t know where to start? Chat with Neil, your geological assistant, to learn everything about relinquisment reports.
Production figures April 2023
23/05/2023 Preliminary production figures for April 2023 show an average daily production of 2 035 000 barrels of oil, NGL and condensate.
NPD geologist re-elected to UN post
22/05/2023 In late April, geologist Stig-Morten Knutsen was re-elected to the board of a UN expert group for resources (United Nations Economic Commission for Europe /Expert Group on Resource Management – UNECE/EGRM).
Gas/condensate discovery near the Kristin field in the Norwegian Sea
12/05/2023 Equinor Energy AS, operator of production licence 255 B, has concluded the drilling of wildcat well 6406/5-2 S.
Announcement of awards in predefined areas (APA) 2023
10/05/2023 The Ministry of Petroleum and Energy announced APA 2023 on 10.05.2023, encompassing the predefined areas with blocks in the North Sea, Norwegian Sea and Barents Sea.
Revised guidelines to the annual status reporting for fields in production
28/04/2023 Revised guidelines to annual status report for fields in production, and template for tables has been published.
Not enough exploration in the Barents Sea
26/04/2023 On Wednesday, a sold-out crowd at the Barents Sea Conference in Hammerfest heard Director General Torgeir Stordal encourage more exploration.
Drilling permit for well 25/2-24 B
26/04/2023 The Norwegian Petroleum Directorate (NPD) has granted Aker BP ASA drilling permit for well 25/2-24 B, cf. Section 13 of the Resource Management Regulations.
Drilling permit for well 25/7-11 S
26/04/2023 The Norwegian Petroleum Directorate (NPD) has granted DNO Norge AS drilling permit for well 25/7-11 S, cf. Section 13 of the Resource Management Regulations.