An Investigative Study of Potential Emulsion Problems Before Field Development
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Published:2007-03-19
Issue:01
Volume:2
Page:1-10
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ISSN:1942-2431
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Container-title:SPE Projects, Facilities & Construction
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language:en
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Short-container-title:
Author:
Kokal Sunil1,
Al-Ghamdi Abdullah1,
Meeranpillai N. S.1
Abstract
Summary
Before the development of a field, it is worthwhile to determine the characteristics of crude-oil emulsions. This may be even more important if the wells are to be equipped with electricalsubmersible pumps (ESPs) which can create a shearing environment resulting in tight emulsions. One such study was conducted to determine the characteristics of emulsions from a cluster of oil fields planned for development. The proposed development is to produce from three fields and several different reservoirs. The central processing facility (CPF) will process ≈500,000 B/D oil and 50,000 B/D of water. Previous studies determine the impact of ESP on emulsions and on the ESP design (horsepower) and the possibility of demulsifier injection downhole. The emulsion properties are also necessary for the design of central wet crude handling facilities. A series of emulsion tests was conducted with crudes from different reservoirs at bottomhole and surface temperatures, range of water cuts, and shearing conditions. The results are provided in terms of "relative" tightness of emulsions from different reservoirs. The viscosities of various emulsions were also determined. The results indicate that demulsifier injection facilities will be needed at the wet crude handling facilities and possibly in wells from one reservoir that has a high asphaltenic and viscous crude. This paper provides a framework of laboratory emulsions studies that can provide valuable information for the design of CPFs before they are built. This paper also discusses some practical aspects of demulsifier treatment programs, including demulsifier selection and optimization and methods to prevent emulsion problems.
Publisher
Society of Petroleum Engineers (SPE)
Subject
Management, Monitoring, Policy and Law,Mechanical Engineering,General Energy,Ocean Engineering
Cited by
1 articles.
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