Abstract:In order to research the problem of rapid increase in risk that production wells stop flowing during the middle and high water cut stage of deep-water volatile oilfields, this paper, taking Akpo oilfield in Niger Basin of West Africa as an example, relying in the research of reservoir configuration classification, using the actual production data of typical wells in Akpo oilfield, and through the study of dynamic phase permeability regularity, predicted the change law of production dynamic indexes such as water cut and liquid flow in production wells under different reservoir conditions, and then established a set of prediction methods for the change law of production’s wellhead pressure and the stop flowing timing in deep-water volatile oilfields. The results indicated that: firstly, the change law of wellhead pressure in deep-water volatile oilfields is mainly affected by water cut and liquid flow, and the dynamic change law of production wells is different under different reservoir conditions; the risk of quitting flow is raising in the later stage of development, but the flowing phase of production wells can be prolonged effectively by reforming the pressure mode of the first separator, and the economic benefit is remarkable; the research method has high prediction accuracy and can be directly used to guide field production, and the research ideas and processes provide theoretical basis and technical support for the later adjustment of development in deep-water oilfields.