A laboratory investigation of water abatement chemicals for potential use in the Wanaea field
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Copyright © 2009 Elsevier B.V. All rights reserved
A link to the journal's website is available at: http://www.sciencedirect.com/science/journal/09204105
The disadvantages of water influx into a producing well include reduced relative permeability tohydrocarbon and increased expenses for both water handling and corrosion control. An effective watercontrol technique is, therefore, highly desirable. One potential solution for reducing excessive waterproduction is the injection of ?Relative Permeability Modifier? (RPM) chemicals into producing wells. Thework described in this paper is concerned with finding a highly selective chemical to reduce waterproduction without affecting oil production. Presented herein are results of laboratory tests using relativepermeability modifiers in conjunction with core samples from the Wanaea field.The oil producing Wanaea field is operated by Woodside Energy. This field is in offshore Western Australianwaters. Some of the wells suffer from high water cut, therefore the introduction of a relative permeabilitymodifier (RPM) has been considered.Four RPM chemicals were tested with core plugs taken from Unit II of wellWanaea-3 (core depth 2832.00 to2844.50 m). Laboratory experiments were conducted on 4 reservoir core plugs, with air permeabilitiesranging from 158 to 334 md and porosities from 16.4 to 19.9%. The objective of the tests was to assess theeffectiveness of selected RPM's in selectively reducing water production.The experimental results demonstrated that the chemicals were variably effective in reducing the relativepermeability to the water phase, but they also variably affected the relative permeability to the oil phase.
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