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Title: Outstanding Performance In Heavy Oil Application With Vx Technology Part( 1: Flow Loop Validation)
Author: Bruno Pinguet, Elsie Guerra, Hudson Lemes, Wilmar Angulo, Moussa Kane
Source: 2007 South East Asia Flow Measurement Conference
Year Published: 2007
Abstract: The objective of this paper is to present accurately the performance of the Vx Technology from modelization to flow loop tests in Heavy Oil Environment. The focus will be on practical information, and knowledge sharing to overcome all classical challenges met by multiphase flow meter. Why should we use a multiphase flow meter more than a separator? The main issue today is the production and productivity of the reservoir in Heavy Oil. All agree that well testing operations in heavy oil wells are very complex and most of conventional surface well testing equipment is very difficult to use in those operations to get reasonable accuracy. It is complex to run a test separator and its measurements are not reliable at all due to the vessel instability, foaming or separation issues. The main challenge is basically that the oil density is very close to the water density and therefore the process of gravity separation in the conventional separator is not anymore working properly. Added to this that most of the heavy oil is very viscous this should lead to have higher retention time. Another associated phenomenon is that the droplets of gas trapped inside the fluid cannot anymore flow freely inside the liquid and stay in gas phase but trapped inside the liquid. This is obviously leading to large overestimation of some of the liquid flow rate and by consequence then underestimate gas rate. Finally, it should be mentioned that phenomena of emulsion are appalling working conditions for any separators without any injected diluent or desemulsifier.

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