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目的：加深对烃类相态特征的认识，提高识别油气藏类型的准确性。方法：用灰色关联分析识别烃类相态特征图，将未知比较序列与已知模式系统化关联，求得它们之间的关联度，找出影响目标值的重要因素，识别出油气藏类型。结果：利用该方法对具体油气藏相态特征图进行识别，检验准确率达100％。结论：该方法是一种简便、客观而有效的方法。
Objectives: To deepen the understanding of the characteristics of hydrocarbon phases and improve the accuracy of identifying types of reservoirs. Methods: The gray relational analysis was used to identify the phase diagram of hydrocarbon phase. The unknown sequence was systematically related to the known model. The correlation between them was obtained. The important factors affecting the target value were identified and the types of the hydrocarbon reservoir were identified. Results: This method is used to identify the phase diagram of a specific oil and gas reservoir, with an accuracy of 100%. Conclusion: This method is a simple, objective and effective method.