白音查干凹陷锡林好来地区气测录井解释评价方法

Gas Logging Interpretation and Evaluation Method for Xilinhaolai Area in Baiyinchagan Sag

摘要: 白音查干凹陷锡林好来地区储集层流体性质复杂，油气水层电性特征不明显，建立在气测组分比值基础上的传统气测解释方法亦不适应该地区储集层解释评价的需要。为提高解释符合率，开展了基于气测值和钻时的录井解释方法研究。首先，以试油结论为依据，提取该地区不同性质储集层的气测有效参数，建立反映储集层含油性的气测含油性指数；其次，对反映储集层物性的钻时取值方法进行研究，建立钻时比值参数；最后，将二者进行交会分析，建立气测录井解释评价图版。实际应用表明，该方法解决了研究区块储集层流体性质识别的难题。

Abstract: In Xilinhaolai Region of Baiyinchagan Sag, reservoir fluid properties were complex, the electrical characteristics of oil/gas/water layers were not clearly different from each other, thus the traditional gas logging interpretation method based on the ratio of hydrocarbon component was not suitable for the interpretation and evaluation of reservoirs in this area. In order to improve the interpretation coincidence rate, the logging interpretation method based on gas logging value and drilling time was studied. First, based on the results of oil testing, the effective parameters of different reservoirs in the area were extracted from gas logging, and comprehensive evaluation index of oil bearing capacity of the reservoir was set up, then the drilling time valuing method reflecting the reservoir physical properties was investigated to set up the drilling time ratio parameter. Finally, the above parameters are crossingly analyzed to establish the gas logging interpretation and evaluation chart. The application shows that the method can solve the problem of reservoir fluid properties identification in the research area.