Our proprietary simulation technology predicts downhole pressure variations caused by waves when drilling from floating rigs. This provides insights into risks and well pressure margins during well planning and operational phase
VALUE PROPOSITION
Early warning for possible mud losses, wellbore ballooning and kicks related to surge & swab during drill pipe connections on floaters
When the drill pipe is put in slips during break-out or connection of the next stand, the topside heave compensation of the drill string is disabled. The whole drill string starts to move up and down with the rig.
HEAVING DOWNWARDS
When the drill string moves downwards, there is a sudden increase in downhole pressure ("surge"), which can surpass fracture pressure and severely damage the well.
HEAVING UPWARDS
When the string moves upwards, there is a sudden decrease in downhole pressure ("swab"). If downhole pressure falls below the pore pressure it causes a well to start producing, which may lead to kicks and in the absolute worst case scenario a blowout.
SOFTWARE
Drill-I™
Our advanced simulation software is able to calculate anticipated bottom-hole surge & swab during drill pipe connections based on such inputs as rig type, drilling fluid data and well trajectory and geometry. Utilizing statistical data analysis for weather on a drilling location, we are able to provide an estimate of surge & swab pressure margins for your well.
Using our surge & swab simulations it is possible to determine a precise dynamic rig heave limit based on how much surge & swab your well can tolerate, not how much heave and waves the drilling rig you use can tolerate. This information will make you prepared for mud losses or kicks and can save weeks of NPT.
Surge & swab simulations and operability studies are available now – get in touch with us for an offer!
“No-one is offering a comparable commercial solution today, either for pre-planning or real time”
– Major operator company
SERVICES
Surge & swab "roadmap" for well planning
- Precise calculations of surge & swab on drill pipe connections and/or rig heave limits for different parts of your well
24/7 operational support
- Rolling rig heave limit forecast for data-driven decision support, minimizing the risk of breaching well pressure margins
Operability studies for floating rigs in harsh weather
Cost-efficient surge & swab simulation services
HISTORY
REFERENCES
Get in touch with us if you want full text of a paper or presentation!
Rig operability study, delivered to OMV Norway in September 2019
- We performed operability calculations for two different rig types in Barents Sea, Norwegian Sea and North Sea. The calculations were based on fixed rig heave limits (conventional method) and on dynamic limits, dictated by the pressure margins of a model well. We used our proprietary software HeaveSIM™ to calculate the dynamic limits!
Surge & swab calculations for several wells in Norway and Brasil delivered to Equinor in January-August 2019
- We calculated downhole surge & swab induced by rig heave during drill pipe connections in several different wells. Calculations were performed using our proprietary software HeaveSIM™ based on such variables as well trajectory and geometry, drilling fluids data, weather data and rig heave measurements.
Presentation at the SPE One Day Seminar (Bergen, Norway) in May 2019
- The title of the presentation was "Flow Loop Trial of an Autonomous Downhole Choke for Compensation of Rig Heave-Induced Surge & Swab" and the paper was co-authored by Techni, NTNU and Equinor. SPE-196641.
Presentation at the SPE Workshop on Innovative Arctic Technologies (Harstad, Norway) in March 2019
- The title of the presentation was "Influence of Well Geometry, Weather Conditions and Rig Type on Surge & Swab During Drill Pipe Connections in the Barents Sea" and the paper was co-authored by OMV, Vår Energi, NTNU and Equinor.
Presentation at the SPE/IADC Drilling Conference and Exhibition (The Hague, The Netherlands) in March 2019
- The title of the presentation was "Verification of Downhole Choke Technology in a Simulator Using Data from a North Sea Well" and the paper was co-authored by NTNU and Equinor. SPE-194143, also published in the SPE Drilling & Completion Journal. https://bit.ly/2lmO4wV
White paper on the HeaveLock™ autonomous downhole tool published in SPE The First in August 2018
- This paper described the downhole choking concept and its utilization as an enabler for implementation of MPD on floating rigs in harsh weather environment.
Presentation at the SPE/IADC Drilling Conference and Exhibition (Houston, USA) in April 2018
- The title of the presentation was "Attenuating Heave-Induced Pressure Oscillations using Automated Down-hole Choking" and the paper was co-authored by NTNU, Techni and Equinor. SPE-189657.
20 years of experience developing, financing and leading technology companies.
OLE MORTEN
AAMO
Board director and inventor
Professor of cybernetics at NTNU. Expert in drilling control and simulation.
SIGBJØRN
SANGESLAND
Board director and inventor
Professor of petroleum technology at NTNU. Expert in drilling and petroleum technology.
DAG ALMAR
HANSEN
Board director
CEO of Techni, one of the largest design & engineering houses in Norway.
ROBERT
GRAHAM
Senior Adviser, Drilling and MPD
Rob has spent more than 30 years working with drilling in service and operator companies across the globe. He specializes in advanced drilling solutions such as UBD, MPD and Coiled Tubing drilling. Robert works with Heavelock AS as part-time advisor.
MIA OLEA VETTESTAD
MSc student
Mia is a final year cybernetics student at NTNU. She completed a project assignment in cooperation with Heavelock and continues with a MSc thesis on control system theory and application.
THOMAS
SPERLE
Senior Adviser, Technology
Thomas graduated with a PhD in Chemical Engineering from NTNU and spent the first 10 yers of his career with Statoil in various positions within R&D and projects. His latest position was CTO in Resman where he was responsible for all technology and development matters.
ZHIHONG
YU
MSc student
Zhihong is a fourth year cybernetics student at NTNU. He is a summer intern for Heavelock working with control system design.
MARTIN
KVERNLAND
Chief Executive Officer (CEO)
MSc in Cybernetics from the NTNU and business studies at BI. Prior to joining Heavelock AS Martin had worked 8 years for Norwegian oilfield service company Reinertsen with maintenance and modifications on the Norwegian Continental Shelf.
DMITRI
GORSKI
Chief Technical Officer (CTO)
PhD in Process Technology and MBA in Technology Management. Background from working in various technical, project and operational roles for Norske Skog, Reinertsen, Equinor and Solids.Experts in Norway and abroad. Considerable offshore experience from NCS and South-China Sea.
MATEUS
SANT 'ANA
Data Scientist
MSc in Simulation and Visualization from NTNU. Mateus comes from Brazil, where he had worked on student assignments for Petrobras during his studies. Excellent academic record.
TORGEIR
RUSTEN
Adviser, Downhole Tools
MSc in Mechanical Engineering from NTNU. Background from Schlumberger, where Torgeir had spent 7 years working as Mechanical Engineer developing downhole tools for drilling. Field experience from land-based operations in the US. Torgeir works with Heavelock AS as part-time advisor.
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