WELL INTERVENTION AND DRILLING

Wellhead Integrity Monitoring Reference projects

1 Aasta Hansteen, Spitsbergen (2018) | Transocean/Statoil Monitoring of fatigue and structural integrity during drilling of the Aasta Hansteen develop- ment wells with Transocean Spitsbergen. 2 Oda, Maersk Interceptor (2018) | Spirit Energy HP Riser Monitoring on Maersk Interceptor Jack-up rig to track load and fatigue of wellhead for the Oda field development. 3 Alta 5, Leiv Erikson (2018) | Lundin Monitoring of fatigue, well support, wellhead integrity during drilling of Alta 5 with extended well test exploration well in the Barents Sea with Leiv Erikson. 4 Luno2/Rolvsnes, COSL Innovator (2018) | Lundin Monitoring of fatigue, well support, wellhead integrity during drilling of Luno2 and Rolvsnes explora- tion wells with COSL Innovator. 5 Tethys, Songa Enabler (2018) | Spirit Energy Monitoring of fatigue, well support, wellhead integrity during drilling of the Tehtys exploration well with Songa Enabler. Ser- vice made through streaming of sensor data from existing sensors on the BOP. 6 Svanefjell, Deepsea Stavanger (2018) |AkerBP Monitoring of fatigue, well support, wellhead integrity during drilling of Svanefjell exploration wells in the Barents Sea with Deepsea Stavanger.

4Subsea offers drilling and well intervention services to extend the life of producing wells. We help operators perform offshore drilling, completion, and intervention operations safely and efficiently. The Well Intervention and Drilling range contains Subsea Wellhead Integrity Monitoring (SWIM™), WellCare™, WellTrack™ and Conductor Analysis, in addition to advanced Engineering Services. 7 Skarv/Kvitungen, Deepsea Stavanger (2018) | Odfjell Drilling/AkerBP Monitoring of fatigue, well support, wellhead integrity during well interventions of Skarv well(s) and Kvitungen exploration well with Deepsea Stavanger 8 Troll, COSL Promoter (2018) | Statoil Monitoring of well support and wellhead integrity during well interventions of Troll well(s) with COSL Promoter. 9 Troll, Songa Endurance (2017) | Statoil Monitoring of wellhead integrity during well intervention of Troll well(s) with Songa Endurance. Service made through streaming of sensor data from existing sensors on the BOP. 10 Åsgard, Songa Encourage (2017) | Statoil Monitoring of wellhead integrity during well intervention of Åsgard well(s) with Songa Encourage. Service made through streaming of sensor data from existing sensors on the BOP. 11 Skarv, Songa Enabler (2017) | AkerBP Monitoring of wellhead integrity during well intervention of Skarv well(s) with Songa Enabler. Service made through streaming of sensor data from existing sensors on the BOP. 12 Verbier, Transocean Spitsbergen (2017) | Statoil Monitoring of wellhead integrity during drilling of exploration well(s) in UK with Transocean Spitsbergen. 13 Kraken, Transocean Leader (2017-2018) | EnQuest Monitoring of wellhead integrity during drilling and completion of Kraken well(s) in UK with Transoce- an Leader. 14 Craster, West Phoenix (2017) | Nexen Monitoring of wellhead integrity during drilling of exploration well(s) in UK with Transocean Spitsber- gen. 15 Maria, Deepsea Stav. (2017-2018) | Odfjell/Wintershall Monitoring of wellhead integrity during drilling and completion of the Maria well with Deepsea Stavan- ger. Service is performed through drilling contractor to operator. 16 Visund, Visund Floater (2017-2018) | Statoil Monitoring of wellhead integrity during drilling and well interventions on Visund floater. 17 Sygna , Bideford Dolphin (2017) | Statoil Monitoring of wellhead integrity during well intervention of a well Bideford Dolphin. 18 Janice P&A, Ocean Valiant (2017-2018) | Maersk Oil Monitoring of wellhead integrity during plug and abandonment of brownfield wells and drilling of exploration wells with Ocean Valiant.

19 Alta 4, Filicudi, Gohta, Børselv, Hufsa, Leiv Erikson (2016-2017) | Lundin Monitoring of wellhead integrity during exploration drilling campaign with Leiv Erikson.

20 Troll, Fram (2016) | Statoil Monitoring of wellhead integrity during drilling and completion of a well with Stena Don.

21 Tordis, Vigdis, Statfjord Nord (2016) | Statoil Monitoring of wellhead integrity during drilling and completion of wells with Bideford Dolphin.

4Subsea offers drilling and well intervention services to extend the life of producing wells. We help operators perform offshore drilling, completion, and intervention operations safely and efficiently. The Well Intervention and Drilling range contains Subsea Wellhead Integrity Monitoring (SWIM™), WellCare™, WellTrack™ and Conductor Analysis, in addition to advanced Engineering Services. 22 Neiden, Fosen, Alta 3 (2016) | Lundin Live monitoring of wellhead integrity and wellhead fatigue during drilling of several wells with Island Innovator. 23 Lorry, Alta 2, Alta 3 (2015) | Lundin Live monitoring of wellhead integrity and wellhead fatigue during drilling of several wells with Island Innovator. Live monitoring of lower flex joint angle with guidance on rig position for minimum well- head damage at critical stages of the operation. 24 Gemini (2015) | Lundin Monitoring of wellhead integrity and wellhead fatigue during drilling of a well. 25 Zulu (2015) | Lundin Monitoring of wellhead integrity and wellhead fatigue during drilling of a well. Live monitoring of lower flex joint angle with guidance on rig position for minimum wellhead damage at critical stages of the operation. 26 Ivar Aasen (2015) | Det norske oljeselskap Monitoring of jackup rig conductor movement and fatigue analysis of most critical conductor connectors during drilling of a well.

27 Tordis, Vigdis, Statfjord (2014-2015) | Statoil Live monitoring of wellhead integrity and wellhead fatigue during drilling and completion of 12 wells in the Norwegian Sea with Bideford Dolphin. 28 Troll, Tyrihans (2014) | Statoil Monitoring of wellhead integrity and wellhead fatigue during drilling and completion of a well. 29 Snorre B (2013-2014) | Statoil Monitoring of wellhead integrity and wellhead fatigue during drilling and completion of a well. 30 Troll, Oseberg (2013) | Statoil Monitoring of wellhead integrity during side track drilling and re-completion of a well. Performed wellhead fatigue retrospective fatigue analysis based on measured results. 31 Polar Pioneer platform (2010) | Statoil Monitoring of upper and lower flexjoint using flexjoint monitoring system. Prototype testing of SMS Gyro™ sensors for measuring lower flexjoint angles and BOP movement. Verification of results for SMS Gyro™ sensor by comparing with results from more “traditional” 5-axis sensors. 32 Borgland Dolphin platform (2011) | BP Norge Live monitoring of upper and lower flexjoint, on board data storage and presentation of operating para- meters. Wellhead fatigue analysis and status reporting based on measured response from operations.

33 Transocean Leader platform (2011) | Statoil Monitoring of conductor stability on a satellite well with daily analysis of developments in conductor stability. 34 Bideford Dolphin platform (2011-2013) | Statoil Monitoring of upper and lower flexjoint as operational support. Storage of measured data in WellTrack and retrospective wellhead fatigue analysis on selected wells.

4Subsea offers drilling and well intervention services to extend the life of producing wells. We help operators perform offshore drilling, completion, and intervention operations safely and efficiently. The Well Intervention and Drilling range contains Subsea Wellhead Integrity Monitoring (SWIM™), WellCare™, WellTrack™ and Conductor Analysis, in addition to advanced Engineering Services. 35 Polar Pioneer platform (2011-2013) | BP Norge Live monitoring of upper and lower flexjoint for operational support mainly during completion. Storage of measurement data in WellTrack and subsequent wellhead fatigue analysis based on measured results to provide a field status report on wellhead fatigue every 6 months during the three-year campaign. 36 Norne (2011-2013) | BP Norge Processing data from operation on several wells on a Norne subsea template with Aker Spitsbergen.

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We deliver solutions on a unique digital platform, aiming to be in the forefront of digitising oil, gas and offshore wind operations worldwide. The company was established in 2007, and clients include all the major oil and gas operators as well as the large suppliers of subsea equipment.

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