Perfecting the Perfect Well: Lessons-Learned from the Pre-Drilling Campaign for Johan Sverdrup
- Janne Vølstad (Equinor) | Stian Bærheim (Equinor) | Knut Henriksen (Baker Hughes) | Trond Gloppen (Odfjell Drilling)
- Document ID
- Offshore Technology Conference
- Offshore Technology Conference, 4-7 May, Houston, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2020. Offshore Technology Conference
- 1.1 Well Planning, 1.1 Well Planning, 1.6 Drilling Operations
- cost-saving, Johan Sverdrup, Perfect well, drilling, megaproject
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- 64 since 2007
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The pre-drilling campaign for the Johan Sverdrup development was a key contributor to the successful execution of the first phase of the mega-project. The initial pre-drilling plan consisted of drilling six (6) oil producers, seven (7) subsea injectors and one (1) pilot target. At the end of the campaign, however, as many as eight (8) oil producers, twelve (12) subsea injectors and six (6) pilot targets had been drilled, more than one year ahead of the original schedule and NOK 7 billion (nearly 800 million USD) below budget. All the wells in the pre-drilling campaign were drilled by the semi-submersible drilling unit Deepsea Atlantic (Odfjell Drilling) and the objectives were met on all wells.
After a summary of the results of the campaign, the focus of this paper is to identify some of the key success factors behind the campaign and attempts to draw lessons-learned of relevance to future drilling campaigns. Key areas to be assessed in the paper include: contract strategies including the use of integrated service and rig contracts with common incentives to develop and maintain a "One-Team" mentality; the further development of the ‘perfect well’ approach and Lean methodology to minimize waste and maximize efficiency of the campaign; as well as efforts and arenas to systematically promote collaboration, openness and regular experience transfer among the different parties involved (operator and contractors).
Since the pre-drilling campaign was completed, the Johan Sverdrup project has successfully tied back, completed and started production of the eight (8) pre-drilled oil producers and injection in the twelve (12) subsea injectors.
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Rushmore database (Jan 2020), Between year '2016' and '2019', Well Type: Development', Hole Type:'New Well', Sub-Region: 'Europe North Sea, Rig Type: all Offshore', Maximum Angle '>= 85 degrees', water depth <= 1500 ft, Well Status: 'Completed'