Transient Slug Flow Modelling of Subsea Riser Flowline System

Cascade Control Experiments of Riser Slug Flow Using Topside Measurements

Anti-slug control applied to two-phase flow provides a very challenging and important application for feedback control. It is important because it allows for operation that would otherwise be impossible, and challenging because of the presence of both RHP-poles and RHP-zeros. To conduct experiments on pipeline-riser anti-slug control, a small-scale slug-loop has been build. The loop has been mo...

Medium-Scale Experiments on Stabilizing Riser-Slug Flow

Original SPE manuscript received for review 24 July 2008. Revised manuscript received for review 11 May 2009. Paper (SPE 120040) peer approved 23 May 2009. Summary This is the second of two papers describing control experiments on a medium-scale slug rig. The first paper (Sivertsen et al. 2009) describes experiments performed on a small-scale laboratory rig built at the Norwegian University of ...

Cost-effective Thermal Insulation Systems for Deep- Water West Africa in Combination with Direct Heating

Long offsets and subsea tie-backs are becoming attractive scenarios for exploration and production of offshore hydrocarbon resources. Flow assurance associated with these field development scenarios is critical. As offshore oil and gas production pushes into deeper water, the risk of hydrate plugging of pipelines and flowlines continues to grow, as does the cost of remediating any such plugs. C...

Dynamic study of a subsea processing system

This paper describes the simulation setup applied in an introductory study in connection with implementation of subsea processing equipment at an already operating gas and oil field. The primary aim of the subsea processing equipment is to increase the oil recovery, but it is also considered as an important technological step forward. A subsea separation and boosting station is planned installe...

Modelling and Experimental Study of Wax Deposition in Transportation Line Using a Flow Loop System