【摘要】：水驅(qū)特征曲線趨勢(shì)分析是預(yù)測(cè)油田生產(chǎn)動(dòng)態(tài)的重要方法。滲流特征方程作為油水相對(duì)滲透率比與含水飽和度關(guān)系曲線的表征形式,決定了相應(yīng)的水驅(qū)特征曲線關(guān)系式。現(xiàn)有滲流特征方程局限于某一含水階段的表征,人為割裂了滲流過程的整體性,導(dǎo)致相應(yīng)的水驅(qū)特征曲線趨勢(shì)分析無(wú)法充分利用早期生產(chǎn)資料,限制了預(yù)測(cè)油田生產(chǎn)動(dòng)態(tài)的能力。為此,基于系統(tǒng)論的整體性思想重新審視了油水兩相滲流特征,指出油水兩相滲流過程呈近似的對(duì)稱性,對(duì)稱中心同時(shí)也是從油相滲流優(yōu)勢(shì)過渡到水相滲流優(yōu)勢(shì)的唯一拐點(diǎn)。根據(jù)油水兩相滲流特征提出了新的滲流特征方程,完成了相應(yīng)水驅(qū)特征曲線關(guān)系式的推導(dǎo),并建立了新的水驅(qū)特征曲線趨勢(shì)分析方法。新方法重視數(shù)據(jù)預(yù)處理,考慮油田系統(tǒng)結(jié)構(gòu)變化,更具科學(xué)性。基于油水兩相滲流的對(duì)稱性特征,采取對(duì)稱變換的新思路預(yù)測(cè)油田含水率上升趨勢(shì),充分利用了早期生產(chǎn)資料,大大提高了生產(chǎn)動(dòng)態(tài)預(yù)測(cè)能力,對(duì)措施效果評(píng)價(jià)具有參考意義。
[Abstract]:Trend analysis of water drive characteristic curve is an important method to predict oilfield production performance. The percolation characteristic equation is used as the representation of the relation curve between oil-water relative permeability ratio and water saturation, which determines the corresponding relationship between water flooding characteristic curve and oil-water relative permeability ratio. The existing seepage characteristic equations are confined to the characterization of a certain water-cut stage, and the percolation process is artificially severed, which results in the corresponding trend analysis of the characteristic curve of water flooding being unable to make full use of the early production materials. It limits the ability to predict the production performance of oil fields. Therefore, based on the system theory, the characteristics of oil-water two-phase seepage flow are re-examined, and it is pointed out that the oil-water two-phase seepage process is approximately symmetric, and the symmetry center is also the only inflection point from the oil-phase seepage superiority to the water-phase seepage advantage. According to the characteristics of oil-water two-phase seepage, a new seepage characteristic equation is proposed, and the corresponding relationship of water drive characteristic curve is deduced, and a new trend analysis method of water drive characteristic curve is established. The new method pays more attention to data preprocessing and takes into account the structural changes of oil field system, which is more scientific. Based on the symmetry characteristics of oil-water two-phase seepage, a new idea of symmetry transformation is adopted to predict the rising trend of water cut in oil field, make full use of the early production materials, and greatly improve the ability of production dynamic prediction, which has reference significance for evaluating the effect of measures.
【作者單位】： 中國(guó)地質(zhì)大學(xué)(北京)能源學(xué)院;中國(guó)石油大學(xué)(北京)非常規(guī)天然氣研究院;
【基金】：國(guó)家科技重大專項(xiàng)課題“新一代油藏?cái)?shù)值模擬軟件”(2011ZX05009-006)
【分類號(hào)】：TE357.6

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