多次冪指數(shù)型廣義水驅(qū)特征曲線的建模和應(yīng)用
本文選題:微分模型 + 油水相對(duì)滲透率。 參考:《石油學(xué)報(bào)》2017年03期
【摘要】:用演繹推導(dǎo)建立了時(shí)空自變量微分模型,結(jié)合油、水相對(duì)滲透率的實(shí)驗(yàn)統(tǒng)計(jì)分析,對(duì)多次冪指數(shù)型廣義水驅(qū)特征曲線預(yù)測(cè)通式進(jìn)行了系統(tǒng)深入的研究與應(yīng)用。預(yù)測(cè)通式在機(jī)理方面揭示了半經(jīng)驗(yàn)和半理論的統(tǒng)計(jì)特征,在應(yīng)用方面具備了廣義性和高效性。廣義水驅(qū)特征曲線普遍適用于國(guó)內(nèi)外各地質(zhì)類型的油田和井區(qū),用水驅(qū)特征指數(shù)快速判定曲線形態(tài)及函數(shù)類型,用前期開(kāi)發(fā)資料預(yù)測(cè)可采儲(chǔ)量,分析各類油田的水驅(qū)油效果和措施增產(chǎn)效果,為油田開(kāi)發(fā)全過(guò)程的方案規(guī)劃制定提供了科學(xué)依據(jù),提高了油藏動(dòng)態(tài)預(yù)測(cè)分析的工作效率。建立了一式多用的微分公式和預(yù)測(cè)通式,并對(duì)一、二類廣義水驅(qū)特征曲線公式進(jìn)行互換性研究,確定了水驅(qū)特征指數(shù)定義域,分析了多次冪指數(shù)函數(shù)類型特點(diǎn),系統(tǒng)地研究了各種曲線形態(tài)的滲流機(jī)理,推導(dǎo)了提高預(yù)測(cè)精度的簡(jiǎn)易算法公式,方法具有一定實(shí)用性及理論價(jià)值。
[Abstract]:The differential model of space-time independent variables is established by deductive derivation. Combined with the experimental statistical analysis of the relative permeability of oil and water, the general prediction formula of the generalized water drive characteristic curve with multiple power exponents is studied and applied systematically and deeply. The general formula of prediction reveals the statistical characteristics of semi-experience and semi-theory in the aspect of mechanism, and has broad sense and high efficiency in application. The generalized water drive characteristic curve is generally suitable for oil fields and well areas of various geological types at home and abroad. The characteristic index of water drive quickly determines the shape and function types of curves, and predicts recoverable reserves by using pre-development data. This paper analyzes the effect of water flooding and measures to increase oil production in various oilfields, which provides a scientific basis for the formulation of the whole process of oilfield development, and improves the working efficiency of reservoir performance prediction and analysis. In this paper, a multipurpose differential formula and a general prediction formula are established, and the interchangeability of one and two kinds of generalized water drive characteristic curve formulas are studied, the definition region of water drive characteristic index is determined, and the characteristics of multiple power exponent function types are analyzed. The seepage mechanism of various curve forms is systematically studied and a simple formula for improving the prediction accuracy is derived. The method is practical and valuable in theory.
【作者單位】: 大慶油田有限責(zé)任公司勘探開(kāi)發(fā)研究院;
【分類號(hào)】:TE357.6
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