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Low Salinity Oil Recovery - An Experimental Investigation
A. Lager1*, K. J. Webb1, C. J. J. Black1, M. Singleton2, K. S. Sorbie2
1BP, EPTG, Pushing reservoir limits, Sunbury, UK
2FAST-rac, Institute of Petroleum Engineering, Heriot-Watt University, Research Park,
Riccarton, Edinburgh EH14 4AS, UK
This paper was prepared for presentation at the International Symposium of the
Society of Core Analysts held in Trondheim, Norway 12-16 September, 2006
Abstract:
The idea of injecting low salinity water into a petroleum reservoir is not novel and was often used in the 70’s prior to the injection of surfactant. Yet, recently it was shown that simply injecting sufficiently low salinity water improves oil recovery (LoSal™). Many possible mechanisms concerning Low salinity waterflood have been proposed in the literature. This paper describes an experimental investigation into some of the factors controlling the increased oil recovery observed when low salinity brine is injected into oil saturated reservoir core samples. Extensive chemical analyses were performed on the effluent showing the extent of interaction between the injected brine, the oil and the rock matrix.
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About the Society of Core Analysts
Objectives
The name of this organization is the Society of Core Analysts (SCA) and was founded in 1986. This organization is a Chapter-at-Large of The Society of Petrophysicists and Well Log Analysts (SPWLA) and is established with two objectives:
- To promote the aims, purposes, and membership of the SPWLA which is a non-profit scientific organization.
- To serve the interests of all persons who use or obtain reservoir evaluation information from rock and core samples.
As a guide for fulfilment of the first objective, this Chapter stands responsible to, and subject to, the rules and regulations of the SPWLA.
As a means toward the second objective this Chapter will sponsor technical speakers, projects, and presentation of papers dealing with formation evaluation. This Chapter will hold membership open to all core analysts, log analysts, geologists, geophysicists engineers, service company personnel and all others interested in the study of rocks and their interstitial fluids. This Chapter will also actively encourage membership and participation in the activities of the SPWLA.
Website: www.scaweb.org
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