Automatic Real-Time Drilling Supervision, Simulation, 3D Visualization, and Diagnosis on Ekofisk
- Rolv Rommetveit (SINTEF Petroleum Research) | Knut Steinar Bjorkevoll (SINTEF Petroleum Research) | Sven Inge Odegaard (Hitech Drilling Services Ltd.) | Mike C. Herbert (ConocoPhillips Norge) | George Wesley Halsey (SINTEF Petroleum Research)
- Document ID
- Society of Petroleum Engineers
- IADC/SPE Drilling Conference, 4-6 March, Orlando, Florida, USA
- Publication Date
- Document Type
- Conference Paper
- 2008. IADC/SPE Drilling Conference
- 1.10.1 Drill string components and drilling tools (tubulars, jars, subs, stabilisers, reamers, etc), 1.12.6 Drilling Data Management and Standards, 1.10 Drilling Equipment, 1.11.2 Drilling Fluid Selection and Formulation (Chemistry, Properties), 4.1.2 Separation and Treating, 1.6.6 Directional Drilling, 6.5.2 Water use, produced water discharge and disposal, 5.8.7 Carbonate Reservoir, 1.11 Drilling Fluids and Materials, 1.6.1 Drilling Operation Management, 1.7.5 Well Control, 5.8.9 HP/HT reservoirs, 1.6 Drilling Operations, 7.6.6 Artificial Intelligence, 4.1.5 Processing Equipment, 1.5 Drill Bits, 1.7.2 Managed Pressure Drilling, 1.7.7 Cuttings Transport
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eDrilling is a new and innovative system for real time drilling simulation, 3D visualization and control from a remote drilling expert centre. The concept uses all available real time drilling data (surface and downhole) in combination with real time modeling to monitor and optimize the drilling process. This information is used to visualize the wellbore in 3D in real time. eDrilling has been implemented in an Onshore Drilling Center in Norway. The system is composed of the following elements, some of which are unique and ground-breaking:
- An advanced and fast Integrated Drilling Simulator which is capable to model the different drilling sub-processes dynamically, and also the interaction between these sub-processes in real time.
- Automatic quality check and corrections of drilling data; making them suitable for processing by computer models
- Real time supervision methodology for the drilling process using time based drilling data as well as drilling models / the integrated drilling simulator
- Methodology for diagnosis of the drilling state and conditions. This is obtained from comparing model predictions with measured data.
- Advisory technology for more optimal drilling.
- A Virtual Wellbore, with advanced visualization of the downhole process.
- Data flow and computer infrastructure
eDrilling has been implemented in an Onshore Drilling Center on Ekofisk in Norway. The system has been used on several drilling operations. Experiences from its use will be summarized and presented. This paper has main focus on utilization of an advanced flow model for real time supervision and control of ECD and ECD related effects.
The southwestern part of the Norwegian continental shelf, called the Ekofisk Area, contains eleven major chalk fields. The Ekofisk field is the first and main discovery, discovered in 1969 and put on production in 1972. The fractured chalk reservoir lies at a depth of 9500 - 10700 feet and is approximately 11.2 x 5.4 kilometers in area, with production coming from two zones Ekofisk and Tor. It is one of the North Sea Giants with a STOIIP of 7 MMBO!
Currently there are 4 fields in production, 4 fields abandoned with current production around 325,000 bbls per day of oil and 350 scf of gas per day. Water injection is currently used to maintain reservoir pressure, and approximately 900,000 bbls of water are injected each day.
There are over 150 wells that have been drilled on the Ekofisk, and due to the complexity of the field, with its numerous faults and fracture networks, location of injected water, and pressure uncertainties, all result in well placement challenges.
|File Size||1 MB||Number of Pages||12|