A Dynamic Dual Gradient Model and its Use for Training Prior to DGD Operations in Norway and GoM
- Morten Svendsen (eDrilling Solutions) | Knut S. Bjørkevoll (SINTEF Petroleum Research) | Rolv Rommetveit (eDrilling Solutions) | Manuel Aghito (SINTEF Petroleum Research) | Johnny Frøyen (SINTEF Petroleum Research) | Sven Inge Ødegård (eDrilling Solutions) | Dag Ove Molde (Statoil)
- Document ID
- Society of Petroleum Engineers
- SPE/IADC Drilling Conference and Exhibition, 17-19 March, London, England, UK
- Publication Date
- Document Type
- Conference Paper
- SPE/IADC Drilling Conference and Exhibition
- 1.7.3 Dual Gradient Drilling, 1.6 Drilling Operations, 6.1.5 Human Resources, Competence and Training, 1.11 Drilling Fluids and Materials, 6 Health, Safety, Security, Environment and Social Responsibility, 4.5 Offshore Facilities and Subsea Systems, 4.5 Offshore Facilities and Subsea Systems, 6.1 HSSE & Social Responsibility Management
- DGD model, Deepwater, Training Simulator, Managed Pressure Drilling
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- 229 since 2007
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A very realistic training simulator for dual gradient drilling has been developed, and then utilized for training. Realism in the responses that trainees see is ensured by embedding advanced real time downhole mathematical models, which are set up with the planned configuration for each upcoming well.
Dual Gradient Drilling (DGD) capabilities have been developed into an already proven dynamic hydraulic and temperature model. The flexibility of the model allows incorporating additional pumps in the flow, as in Dual Gradient Systems. The model includes dynamic 2-D temperature calculations, covering the radial area affecting the well. To create the Dual Gradient functionality a subsea pump module was developed, including the mud return line. To assure that the simulator behaves realistically extensive work was done, including implementation and verification of the U-tubing effects in the system. The model has been implemented into a virtual reality training simulator which also includes a full 3D topside drilling environment and 3D downhole visualization model.
This unique DGD training simulator has been utilized for training the drilling teams (both drilling team and DGD operational team). First training for operations utilizing the Controlled Mud Level (CML) system in Norway was developed around the training simulator. Then a further development was done prior to DGD operations in GoM, integrating a quick closing annular as well as booster line functionality. The training course was created around the Dual Gradient procedures, including the contingencies procedures with a focus on the communication between the different parties in the DGD operation.
The paper presents the model basis and how this is implemented into an advanced virtual reality training simulator which enable accurate modelling of the upcoming well. Furthermore, the training process of the drilling crews will be presented including lessons learned.
|File Size||2 MB||Number of Pages||13|
Sven Inge Ødegård, Bjørn T. Risvik, Knut S. Bjørkevoll, Øystein Mehus, Rolv Rommetveit, Morten Svendsen: "Advanced Dynamic Training Simulator for Drilling As Well As Related Experience from Training of Drilling Teams with Focus on Realistic Downhole Feedback"; paper IADC/SPE 163510 presented at the SPE/IADC Drilling Conference and Exhibition held in Amsterdam, The Netherlands, 5–7 March 2013.
Johnny Petersen, Rolv Rommetveit, Knut S. Bjørkevoll, Johnny Frøyen: "A General Dynamic Model for Single and Multi-phase Flow Operations during Drilling, Completion, Well Control and Intervention"; "; paper IADC/SPE 114688 presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition held in Jakarta, Indonesia, 25–27 August 2008. L.P. Drake: "Fundamentals of reservoir engineering", ELSEVIER SIENCE B:V, ISBN 0-444-41830-X
Harald Blikra, Giancarlo Pia, Just Sverre Wessel, Morten Svendsen, Rolv Rommetveit and Sven Inge Ødegård: "The Operational Benefit of Testing HPHT/MPD Procedures Using an Advanced Full Scale Drilling Simulator"; paper IADC/SPE 167958 presented at the SPE/IADC Drilling Conference and Exhibition held in Fort Worth, Texas, USA, 4–6 March 2014.