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《COMPUTING TECHNIQUES FOR GIOPHYSICAL AND GEOCHENICAL EXPLORATION》 1995-02
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APPLICATION OF THE AUTOMATIC ANALYTIC METHOD TO ELECTROFACIES LITHOFACIES IN SOME COMPLEX LITHOLOGIC AREA

Liu Zhenqping;Du Fenq ping(Chengdu Institute of Technology)  
The automatic analysis of electrofacies lithofacies is one of the most important techniques in reservoir description,The technique is essentially a set of procedures of computing multivariate statistical proccessing as below. First,the well一logging data,or their synthesecs which mainly reflect lithology,are clustered as a data base,i.e. electrofacies.Then electrofacies are related to a reasonable lithology by callbration with core. Finally,a continuous lithology-log of well,or well interval which lacks cores data,is established by diseriminatory analysis according to the calibration.Until now,howevet , most of successful application cases of the technique knouwn are bouneded to simpleU litholstratigraphy-mainly consisting of sand and clay,though there are abundant hydrocarbon from carbonate rack strata in the country. The authors choose a suite of complex carbonate rock strata in some area as the study area and limit the analytic basic data on electrofacies to routine well-logs. By calibration of core data from key wells.the authors creat a data base of electrofacics-lithofacies which fits the automatic determination of lithology of most of non-core wells,or well intervals in the area and can fast,effectivelly precisely establish a continuous lithology-log of a well and lith ologic correlation profile of multiple wells in the arbitrary direction in the area. As a successful application,the technique is stepping a routine application stage and playing an important role in the reservoir description project in the area.
【CateGory Index】: P618.130.8
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