2001-297

Improved Oil Productivity by Selective Water Control

Author: 

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Title:Improved Oil Productivity by Selective Water Control

Category:

Conferences (Konferanser)
Authors:Stavland, A.
Lohne, A.
Olsen, A.
Research group:xØkt utvinning (Improved Oil Recovery)
Distribution restriction:Open
Published by:Progress in Mining and Oilfield Chemistry. Recent Advances in Enhanced Oil and Gas Recovery, Akadémiai Kiadó, Budapest
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Additional information:
Progress in Mining and Oilfield Chemistry, Vol. 3, pp 1 - 10;Published by: Progress in Mining and Oilfield Chemistry. Recent Advances in Enhanced Oil and Gas Recovery, Akadémiai Kiadó, Budapest;

Abstract:
This paper discusses a simple and cost effective method for selective water ;control using an oil soluble surfactant system. Bullhead injection of this ;system forms a blocking emulsion at high water cut without any permeability ;reduction at low water cut. The behavior of the blocking emulsion and how to ;select chemicals with such behavior are described. Selective blocking ;properties at high water cut and long term stability in coreflood experiments ;are demonstrated. The permeability reduction showed a reversible behavior upon ;variation in the pressure gradient. Of different screening methods it is found ;that microscopy study of the emulsion structure is the most reliable method.;;;;;;;;;;;;

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