North Sea verification and qualification

The aim is to develop and verify the well concept (AICV®) and make it ready for field testing on the Norwegian Continental Shelf. The Norwegian Research Council is financing 1 of 2 million USD and the project started January 2013.

This is achieved through the following activities:

Modelling of concept
To gain fundamental understanding of the physical phenomena, conceptual models consisting of a 1-dimensional model and a CFD (computational fluid dynamics) were established and verified against experimental data.

Well design of prototype and mechanical integrity
A comprehensive liner solution was developed, designed and constructed with packers and sand screens.

Performance test with single-phase fluids
Prototype performance test on real fluids, i.e. gas, water and oil, to study the physical phenomena and forces in detail. This is achieved experimentally and with CFD analysis.

Performance test with real multiphase fluids
Multiphase flow is complex and experimental tests on how it occurs when the flow through the sand screen and AICV® are performed. The test is performed at real reservoir conditions, i.e. high temperature and pressure, crude oil, hydrocarbon gas and formation water. Tests with different water cut (WC), gas oil ratio (GOR) and gas liquid ratio (GLR) are conducted. This activity is performed in collaboration with the Statoil Research Centre in Porsgrunn, Norway.

Erosion modelling and testing
Erosion is one of the biggest challenges in wells due to sand production. Erosion potential is modelled by CFD and tested experimentally. The materials in exposed parts are evaluated.

Completion test during well clean-up
The AICV has to handle drilling and completion mud. Tests with mud are performed in order to verify that the design can withstand the tough conditions.