【摘要】：準確選取水驅(qū)曲線合理直線段對于運用水驅(qū)曲線法正確預測油藏開發(fā)指標具有重要意義。根據(jù)穩(wěn)定滲流理論,推導了體積波及系數(shù)與含水率、累計產(chǎn)液量之間的數(shù)學模型,提出了基于油藏系統(tǒng)穩(wěn)定性的水驅(qū)曲線合理直線段選取新方法。當含水率函數(shù)與累計產(chǎn)液量的雙對數(shù)曲線呈現(xiàn)斜率為-1的直線時,油藏即處于穩(wěn)定水驅(qū)階段,該階段即為水驅(qū)曲線的合理直線段。在渤海SZ油田進行了實際應用,結(jié)果表明,該方法能夠直觀、定量判斷水驅(qū)曲線合理直線段,從而避免了直線段選取時的主觀性和隨意性,預測結(jié)果更為客觀可靠,具有推廣應用價值。
[Abstract]:It is of great significance to select the rational straight line section of water drive curve for correctly predicting reservoir development index by using water drive curve method. According to the theory of steady percolation, the mathematical model of volume sweep coefficient, water cut and accumulative liquid production is derived, and a new method for selecting rational straight line section of water drive curve based on reservoir system stability is proposed. When the double logarithmic curve of water cut function and accumulative liquid production shows a straight line with slope of -1, the reservoir is in the stable water drive stage, which is the reasonable straight line of the water flooding curve. The practical application in SZ oilfield of Bohai Sea shows that the method can directly and quantitatively judge the rational straight line segment of the water drive curve, thus avoiding subjectivity and randomness in the selection of straight line segments, and the prediction results are more objective and reliable. It has the value of popularization and application.
【作者單位】： 中海石油(中國)有限公司天津分公司渤海石油研究院;
【基金】：國家科技重大專項課題“海上油田叢式井網(wǎng)整體加密及綜合調(diào)整油藏工程技術(shù)應用研究”(2011ZX05024-002);“海上油田叢式井網(wǎng)整體加密及綜合調(diào)整油藏工程技術(shù)示范”(2011ZX05057-001)
【分類號】：TE357.6
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本文編號：2349631