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苏里格气田含气砂体具有规模小、厚度薄以及储集层隐蔽性强的特点,给气层的识别与解释评价造成了一定的困难。针对此情况,在尝试应用常规气测解释方法结合已试气结论与采气结果进行解释分析的基础上,指出了常规解释方法的局限性。通过对62个所钻地层全烃、测井自然伽马和盖层与储集层钻时比值以及试气或采气层产能进行统计分析,建立了以全烃、钻时比为主,以测井自然伽马为辅并结合岩屑录井手段的综合解释方法,给出了相应的综合识别与解释评价图板以及解释评价步骤。该综合解释方法在后续208层录井解释应用中,解释符合198层,符合率为95.2%,更重要的是该方法可有效识别气层的产能类型,不仅为该气田的高效开发提供了决策依据,同时对于录井进入不同地区作业,如何借助原有解释评价方法建立适应该地区的解释评价方法提供了可借鉴的途径。
The gas-bearing sand body in Sulige gas field has the characteristics of small size, thin thickness and strong concealment of reservoirs, which has caused certain difficulties in gas zone identification and interpretation. In view of this situation, the limitations of the conventional interpretation methods are pointed out based on the explanation and analysis of conventional gas detection and interpretation combined with the results of gas tests and gas production. Based on the statistical analysis of the total hydrocarbons, logging natural gamma ray and the ratio of drilling to cover and reservoir, as well as the productivity of test gas or gas production of 62 drilled formations, Logging combined with natural gamma ray combined with the method of logging detritus and integrated interpretation method, gives the corresponding comprehensive identification and interpretation of the evaluation board and explain the evaluation steps. The comprehensive interpretation method in the subsequent interpretation of 208-well logging applications, interpreted in line with 198 layers, with a 95.2% compliance rate, more importantly, the method can effectively identify the type of gas production capacity, not only for the efficient development of the gas field to provide a decision Based on this, at the same time, it provides a reference for how to work well in different regions and how to build an interpretation and evaluation method suitable for the region by using the original interpretation and evaluation methods.