Abstract

In the process of oil displacement of ASP (Alkali/Surfactant/Polymer) flooding ， when Alkali interacts with the fluid and minerals of the reservoir， the alkali is subject to be consumed. The consumption regularity is the key factor affecting ASP ingredient， injection plan， scaling regularity for production wells and oil displacement effectiveness. Therefore to study the alkali consumption is of great significance in guiding ASP ingredient， injection project design， and the analysis for oil displacement mechanism. In this paper， aiming at the main components of minerals in the reservoir in Daqing Oilfield， the laboratory study on static alkali consumption for five kinds of minerals (kaolinite， grundite， chlorite， feldspar and quartz) in ASP system and single component NaOH solution are done respectively. The alkali consumption regularities for five kinds of minerals in ASP and single component NaOH solution are concluded.