This paper presents the authigenic CO_2 flooding mechanism and selects the authigenic CO_2 flooding system based on taking reaction speed and economic factors into account.

According to the present research situation and application of petroleum sulfonate surfactants at home and abroad, the preparation, flooding mechanism, surfactant composition systems, condition of field trial and present problems of petroleum sulfonate surfactants were reviewed.

The study and analysis of the pulse imbibition displacement mechanism experiment

These two profile control agents are of different oil displacement mechanisms and act as coordination of flooding and plugging.

A in-depth fluid flowing diverting agent ZYTQ01 is developed by ourselves to meet the needs of fluid flowing diverting in deep zone, by which in-depth adjustment and oil displacement pilot test is performed in Reservoir 2 + 3 in the upper member of Es3 of south region in Pucheng Oilfield, the in-depth adjustment and displacement mechanisms are introduced.

In order to deepen the knowledge of the oil displacement mechanisms involved, the surface and interfacial tensions, wetting capacity, and surface electrical behavior are determined and discussed for two samples of MDFF agent taken from MDFF pilot area at Xinglongtai, Liaohe: MDA100 as a 25% solution of organic diammonium salt MD1 and MDA200 as an 18% solution of homologue of MD1.