【摘要】：滲透率是確定儲(chǔ)層產(chǎn)能的關(guān)鍵指標(biāo)之一,其準(zhǔn)確性關(guān)系到儲(chǔ)層產(chǎn)能評(píng)價(jià)的準(zhǔn)確程度。測(cè)井?dāng)?shù)據(jù)相對(duì)試井資料更加豐富、成本低,可以有效獲得井筒附近地帶各小層的靜態(tài)特征,為小層的產(chǎn)能評(píng)價(jià)提供參數(shù)支持。為了使測(cè)井滲透率的計(jì)算更為精確,以吉木薩爾致密油地區(qū)為例,在前人研究基礎(chǔ)上,通過分析對(duì)比覆壓孔滲實(shí)驗(yàn)數(shù)據(jù),發(fā)現(xiàn)滲透率和有效覆壓的無(wú)因次乘冪關(guān)系比一般認(rèn)為的指數(shù)關(guān)系要好。用無(wú)因次乘冪關(guān)系模型預(yù)測(cè)地層真實(shí)巖心滲透率,進(jìn)而來(lái)擬合測(cè)井參數(shù)與孔隙度、滲透率的關(guān)系,以達(dá)到優(yōu)化測(cè)井滲透率計(jì)算模型的目的。該方法在吉木薩爾致密油地區(qū)的應(yīng)用效果良好,比直接用地面巖心實(shí)驗(yàn)值的計(jì)算結(jié)果更為接近實(shí)際值。
[Abstract]:Permeability is one of the key indicators to determine reservoir productivity, and its accuracy is related to the accuracy of reservoir productivity evaluation. Compared with the well testing data, the logging data is more abundant and low cost, which can effectively obtain the static characteristics of the small layers near the wellbore, and provide parameter support for productivity evaluation of the small layers. In order to make the calculation of logging permeability more accurate, taking Jimusar tight oil area as an example, on the basis of previous studies, through the analysis and comparison of the experimental data of overpressure porous permeability, It is found that the dimensionless power relation between permeability and effective overpressure is better than the exponential relation. The dimensionless power relation model is used to predict the true core permeability of formation, and then the relationship between logging parameters, porosity and permeability is fitted, so as to optimize the calculation model of logging permeability. The application of this method in the tight oil area of Jimusar is good, and it is closer to the actual value than that calculated by using the experimental data of the surface core directly.
【作者單位】： 中國(guó)石油大學(xué)(北京)石油工程學(xué)院;長(zhǎng)江大學(xué)地球物理與石油資源學(xué)院;中國(guó)石油集團(tuán)測(cè)井有限公司油氣評(píng)價(jià)中心;長(zhǎng)江大學(xué)計(jì)算機(jī)科學(xué)學(xué)院;
【基金】：國(guó)家科技重大專項(xiàng)課題“低滲、特低滲油氣儲(chǔ)層相對(duì)高產(chǎn)富集區(qū)預(yù)測(cè)技術(shù)”(2011ZX05013-001) 長(zhǎng)江大學(xué)“長(zhǎng)江青年基金”項(xiàng)目“混合遺傳算法在致密油試井解釋軟件自動(dòng)擬合中的應(yīng)用研究”(2015cqn53)
【分類號(hào)】：TE312;P631.81

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