西南石油大学学报(自然科学版)
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Cai Dongmei
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Evaluation on water flooded layer in the sandstone reservoir is a complex and difficult problem which has persecuted oilfield workers for many years. It is a new field of geochemical investigation for evaluating waterflooded layer by geochemical logging,which may be an effective and new way for finding residual oil in the secondary development stage. Based on the depth analysis on the mechanism of the watered-out oil layer,gas chromatogram,pyrolysis chromatography and coring data, the evaluation model of waterflooded layer and interpretation chart are established by calculating the parameter of porosity,oil saturation,oil displacement efficiency,and so on,which provides the quantitative calculation and qualitative identification for the evaluation method of waterflooded layer in the sandstone reservoir. The method is applied in the D group of C area in B Field of A Basin. The result indicates that the effectiveness is very great,with the agreement rate of 95percent compared with the result of well testing interpretation. The study revealed that the chemical logging method is applicable with great utilization value,which lay the foundation for the scheme adjustment and the enhancing oil recovery of the oilfield in the mid-late period of oilfield development.
Key words: geochemical logging, water-flooded, gas chromatogram, pyrolysis chromatography, evaluation method
Cai Dongmei. Research on Chemical Logging Evaluation of Water Flooded Layer in Sandstone Reservoir[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2012.10.11.03.
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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2012.10.11.03
http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2014/V36/I2/51
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