Maria Oil Field

Operator: Harbour Energy
Country: Norway
Location: 200 kilometers off the coast of Trondheim
Production start:
Partners:
- Wintershall Norge ASA (operator) 50 %
- Petoro AS 30 %
- Sval Energi AS 20 %
Type: Oil & Gas
Estimated Reserves:
- 60 to 120 million barrels of recoverable oil
- 2 to 5 billion standard cubic meters (sm3) of recoverable gas
Production Volume:

The Maria discovery in the Garn formation lies in a large northeast-southwest trending Jurassic horst block. The Garn Formation forms the reservoir of several producing fields and discoveries in Mid Norway, includ-ing the Trestakk, Smørbukk Sør, Tyrihans, and Tyrihans North structures, all adjacent to the Maria discovery.
The Maria reservoir will be linked via a subsea tieback to the Kristin, Heidrun and Åsgard B production platforms.
The Maria well stream will go to the Kristin platform for processing while supply of water for injection into the reservoir will come from the Heidrun platform and lift gas will be provided from Åsgard B via the Tyrihans D field subsea template.
Processed oil is shipped to the Åsgard field for storage and offloading to shuttle tankers.
Gas is exported via pipeline to the Åsgard Transport gas line to Karsto Gas Processing Plant.

The Maria Phase 2 project involves installation of a new six-slot template in the southern part of the field. The template will accommodate two producing wells and one water injector for pressure support.
The three spare slots will be available for future development of the field

**BiFab:** Fabrication of Separator Module
**FMC Technologies:** Supply of two integrated template manifolds with their respective trees and auxiliary equipment. It also includes the dynamic and the static umbilical, the production riser base and the subsea umbilical termination unit and the subsea control system
**Subsea 7:** Engineering, procurement, construction and installation (EPCI) of 95 kilometres of rigid flowlines and associated structures

2010 - Successful appraisal well drilled
2011 - Wintershall raised its share in Maria discovery to 50 percent
2012 - The Norwegian Petroleum Directorate has issued a drilling permit for Wintershall to drill an exploration well to discover extent of Maria
2012 - Following a successful appraisal, the partners agree to go forward with development
2015 - Plan for Development and Operation (PDO) submitted
2017 - Maria began production
2022 - The PDO for Maria phase II was submitted
2023 - Harbour Energy acquired Wintershall's stake

The Maria discovery in the Garn formation is located in a large horst area from the Jurassic period

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