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储集层产液性质的评价是地质录井工作的重点任务，而储集层含水性的识别又是产液性质评价的难点。为此，提出产液性质的气相色谱识别方法，即针对含水储集层烃类的细菌降解作用和氧化作用强、未分辨化合物含量高的特点，通过对岩心、井壁取心样品的气相色谱分析，根据谱图形态特征、未分辨化合物含量特征，间接判识储集层含水性和产液性质：纯油层的色谱流出曲线具全油特征，主峰碳明显，碳数范围宽（Ｃ１２至Ｃ３０），正构烷烃分布呈规则的尖梳状，基线下未分辨化合物含量低，基线平直；干层的曲线与纯油层的近似，但碳数范围稍窄（Ｃ１４至Ｃ２８），峰高度较低；油水层的曲线亦具全油特征，但主峰碳碳数不同，碳数范围为Ｃ１３至Ｃ３０，未分辨化合物含量高，基线呈明显的穹窿状；纯水层的曲线主峰碳不明显，碳数范围窄（Ｃ１４至Ｃ２７），正构烷烃分布呈不规则梳状，部分略具马鞍状，未分辨化合物含量高低不等。应用此方法在油水分布关系较复杂、产液性质不易识别的大庆长垣以西地区对５５个单层成功地进行了分析判别，符合率达９０．９％。图３（梁大新摘
The evaluation of reservoir fluid property is the key task of geological logging, and the identification of reservoir water content is also a difficult point to evaluate the property of fluid production. Therefore, the gas chromatography identification method of liquid-producing property was put forward, that is, the bacterium of aquiferous reservoirs has the characteristics of strong degradation and high oxidation and high content of unresolved compounds. Through gas chromatography According to the morphological characteristics of the spectra and the characteristics of undisturbed compounds, the reservoir water properties and liquid production properties are indirectly identified: the chromatographic outflow curve of the pure oil layer has the characteristics of whole oil, the main peak carbon is obvious, and the carbon range is wide (C12 to C30 ). The n-alkanes showed a regular comb pattern. The content of undissolved compounds at baseline was low and the baseline was straight. The curve of dry layer was similar to that of pure oil layer, but the carbon number range was slightly narrower (C14 to C28) Low; oil-water layer curve also has full oil features, but the main peak carbon and carbon number is different, the carbon number range of C13 to C30, undissociated high content of compounds, the baseline showed a significant dome-shaped; pure water layer of the main peak of carbon is not obvious, The range of carbon number is narrow (C14 to C27), n-alkanes are irregularly combed, slightly saddle-like, and the content of unresolved compounds variesUsing this method, 55 monolayers were successfully identified and analyzed in the west of Daqing Changyuan, where the oil-water distribution was complicated and the nature of the liquid was not easy to identify. The coincidence rate reached 90.9%. Figure 3 (Liang Daxin Abstract