Effect of Continuous, Trapped, and Flowing Gas on Performance of Alkaline Surfactant Polymer (ASP) Flooding
Effect of Continuous, Trapped, and Flowing Gas on Performance of Alkaline Surfactant Polymer (ASP) Flooding
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DOI：
10.2118/165238-ms
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发表时间：
2013-07
期刊：
影响因子：
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通讯作者：
R. Farajzadeh;A. Ameri;M. J. Faber;D. W. Batenburg;D. Boersma;J. Bruining
中科院分区：
文献类型：
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作者：
R. Farajzadeh;A. Ameri;M. J. Faber;D. W. Batenburg;D. Boersma;J. Bruining
碱/表面活性剂/聚合物（ASP）驱油传统上被认为是三级模式，即，在储层已经被充分注水之后。在筛选研究中，实验通常在两相流条件下进行，即，在岩石中没有气相的情况下。实际上，储油层可能含有一些天然气。在世界上不允许天然气燃烧并且不存在天然气运输基础设施的地区，采出气体的回注是常见的做法。此外，当储层减压至泡点以下时，将产生气相。据我们所知，文献中没有关于现场气相（连续或截留）对三元复合驱性能影响的数据。本文的主要目的是评估游离（非溶解）气相的存在如何影响三元复合驱的性能。为此，进行了几个实验，以评估不同的条件下，游离气体的存在，eit…
Alkali Surfactant Polymer (ASP) flooding has traditionally been considered in tertiary mode, i.e., after a reservoir has been sufficiently water flooded. In screening studies experiments are usually conducted under two-phase flow conditions, i.e., in the absence of a gas phase in the rock. In practice, oil reservoirs might contain some gas. In areas in the world, where gas flaring is not allowed and an infrastructure for gas transportation is not present, reinjection of produced gas is a common practice. Moreover, when the reservoir is depressurized below bubble point a gas phase will be created. To the best of our knowledge, there are no data in the literature concerning the influence of in situ gas phase (continuous or trapped) on the performance of ASP floods. The main objective of this paper is to evaluate how the presence of a free (nondissolved) gas phase affects ASP flood performance. To this end, several experiments were carried out to evaluate different conditions, where free gas was present, eit...