Scale Formation in Reservoir and Production Equipment During Oil Recovery: An Equilibrium Model

T. Haarberg, Ingrid Selm, Dag B. Granbakken, T. Østvold, P. Read, T. Schmidt
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引用次数: 36

Abstract

This paper presents a reliable model for the solubility products of scale-forming minerals. Our model solubilities are in relatively good agreement ({plus minus}5% to 10%) with the most reliable solubilities in aqueous solutions of up to twice the seawater concentration at temperatures of 20 to 150{degrees} C and pressures up to 40 MPa. An equilibrium mode for the reactions responsible for scale formation is developed. The CO{sub 2} equilibria between the gas, oil, and water phases and in the water phase itself are considered. By combining a hydrodynamic model for the transport of water through an oil reservoir during waterflooding with the proposed equilibrium model, we can estimate the amount of precipitate formed in the reservoir.
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采油过程中储层与生产设备结垢:一种平衡模型
本文提出了一种可靠的结垢矿物溶解度产物模型。我们的模型溶解度相对较好地符合({正负}5%至10%),在温度为20至150{°C和压力高达40 MPa的两倍海水浓度的水溶液中,最可靠的溶解度。建立了一种反应的平衡模式。考虑了气相、油相和水相之间以及水相本身的CO{sub 2}平衡。通过将水驱过程中水在油藏中运移的水动力学模型与所提出的平衡模型相结合,我们可以估计油藏中形成的沉淀量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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