【摘要】：滲透率是確定儲層產(chǎn)能的關鍵指標之一,其準確性關系到儲層產(chǎn)能評價的準確程度。測井數(shù)據(jù)相對試井資料更加豐富、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)能評價提供參數(shù)支持。為了使測井滲透率的計算更為精確,以吉木薩爾致密油地區(qū)為例,在前人研究基礎上,通過分析對比覆壓孔滲實驗數(shù)據(jù),發(fā)現(xiàn)滲透率和有效覆壓的無因次乘冪關系比一般認為的指數(shù)關系要好。用無因次乘冪關系模型預測地層真實巖心滲透率,進而來擬合測井參數(shù)與孔隙度、滲透率的關系,以達到優(yōu)化測井滲透率計算模型的目的。該方法在吉木薩爾致密油地區(qū)的應用效果良好,比直接用地面巖心實驗值的計算結果更為接近實際值。
[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】： 中國石油大學(北京)石油工程學院;長江大學地球物理與石油資源學院;中國石油集團測井有限公司油氣評價中心;長江大學計算機科學學院;
【基金】：國家科技重大專項課題“低滲、特低滲油氣儲層相對高產(chǎn)富集區(qū)預測技術”(2011ZX05013-001) 長江大學“長江青年基金”項目“混合遺傳算法在致密油試井解釋軟件自動擬合中的應用研究”(2015cqn53)
【分類號】：TE312;P631.81

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