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Applying the dynamic two-step method to Forecast Remaining Oil Distribution of Lower Series ,Xiaermen Oilfield

Journal of China University of Geosciences 2006年第1期17卷 65-70页

作者：周红汤传意李增辉 Faculty of Earth Resources China University of Geosciences Wuhan430074 China The Xianhe Oil Production Plant Shengli Oilfield Co . Ltd. SINOPEC Dongying257068 China

The distribution of remaining oil is often described qualitatively. The remaining oil distributed in the whole reservoir is calculated according to the characteristics of the space distribution of the saturation of remaining oil. Logging data are required to accomplish this. However, many such projects cannot be completed. Since the old study of remaining oil distribution could not be quantified efficiently, the ＂dynamic two-step method＂ is presented. Firstly, the water cut of every flow unit in one well at one time is calculated according to the comprehensive water cut of a single well at one time. Secondly, the remaining oil saturation of the flow unit of the well at one time is calculated based on the water cut of the flow unit at a given time. The results show that ＂dynamic two-step method＂ has characteristics of simplicity and convenience, and is especially suitable for the study of remaining oil distribution at high water-cut stage. The distribution of remaining oil presented banding and potato form, remaining oil was relatively concentrated in faultage neighborhood and imperfect well netting position, and the net thickness of the place was great. This proposal can provide an effective way to forecast remaining oil distribution and enhance oil recovery, especially applied at the high water-cut stage.

关键词： dynamic two-step method flow unit quantitative forecast remaining oil

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