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Title: An Innovative Solution Towards The Detection Of Wax And Asphaltenes In Production Fluids And To Ensure High Quality Measurements With Multiphase Metering In Such Challenging Conditions
Author: Bruno Pinguet, Carlos Cumbe
Source: 2008 South East Asia Flow Measurement Conference
Year Published: 2008
Abstract: Flow assurance and production optimization represents a cornerstone in current oil industry with regards to increasing recovery factor of the reservoir. One of the main challenges faced during the oil production is the presence of precipitates and/or deposits of asphaltene, wax, scale or any other elements that has the potential to alter the fluid production and transportation. The presence of deposit has a detrimental effect on the quality and performance of flow rates metering devices for production allocation. Conventional equipment failed to produce reliable solution to the flow rates measurement needs in such environment and in many cases additional equipments are required to improve performance of the separator i.e. upstream heating device, injection of inhibitors, etc in order to either remove or prevent or attenuate the precipitation severity. This is not cost effective and increases the operational time and risk. In this paper we present the experience of using permanent multiphase units for continuous monitoring of fluid effluent with high asphaltene content and also we describe how this experience was implemented for production allocation with multiphase mobile testing units for a field in East Venezuela. The challenges were to achieve the most accurate flow rate measurements in order to reduce the uncertainty in the allocation factor with fluid containing nearly 7% asphaltene. With better production allocation per well, the reservoir team will ensure a better reservoir management using continuous monitoring. With increased frequency in monitoring of production wells through the use of accurate and reliable multiphase testing units it enables the acquisition and availability of high quality data per well in order to allow a correct selection for well interventions or to prioritize the wells selected for intervention

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