Flooding Mechanism and Flow Behavior of Surfactant in S7 FaultBlock Reservoir

西南石油大学学报(自然科学版) ›› 2013, Vol. 35 ›› Issue (1): 140-143.

• 石油与天然气工程 • Previous Articles Next Articles

Flooding Mechanism and Flow Behavior of Surfactant in S7 FaultBlock Reservoir

Liu Aiwu1, Liu Hua1, Ma Mingjun2, Li Xiaonan1, Huang Ju1

1. Geological Scientific Research Institute，Jiangsu Oilfield Company，SINOPEC，Yangzhou，Jiangsu 225012，China2. School of Petroleum Engineering，Southwest Petroleum University，Chengdu，Sichuan 610500，China

Received:1900-01-01 Revised:1900-01-01 Online:2013-02-01 Published:2013-02-01

Abstract

Abstract: Taking the S7 reservoir of SN Oilfield as an example，a study is made of flow and oil displacement process of
surfactant in the complex rock / oil / water system after it enters porous media. Surfactant effects on residual oil include the
following three aspects: emulsion，migration and enrichment. Low interfacial tension system can make the oil disperse，then the
oil droplets become smaller，so it is easy to flow. Experimental studies show，after injection of surfactant，relative permeability
curve changes，phase curve shifts to the right，and liquid phase permeability increases，reducing residual saturation.

Key words: surfactant, two phase flow, interfacial tension, oil displacement efficiency, relative permeability curve

Liu Aiwu;Liu Hua;Ma Mingjun;Li Xiaonan;Huang Ju. Flooding Mechanism and Flow Behavior of Surfactant in S7 FaultBlock Reservoir[J]. 西南石油大学学报(自然科学版), 2013, 35(1): 140-143.

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Flooding Mechanism and Flow Behavior of Surfactant in S7 FaultBlock Reservoir

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