利用气测录井资料识别油气层类型方法研究

Studies about the Method for Identification of the Oil and Gas Layer Types with Gas Logging Data

气测井是通过分析泥浆中烃类和其他天然气的组分、含量,寻找和发现油气藏的一种测井方法。通过气测井曲线对油、气、水层的响应,能定性地识别油气水层。由于油层与轻质油层、气层与凝析气层的性质相近,使用常规测井资料很难将油气层类型区分开。此文主要对轻烃比值法、皮克斯勒法、三角形图版法等方法原理和应用效果进行深入研究分析,尝试使用其他气测参数交会识别油气层类型以及储层流体性质。利用气测录井资料识别油气层类型在工区的实际应用中效果良好。

Gas logging is a logging method to find reservoirs by analyzing the hydrocarbon and other gas components in mud. The properties of a reservoir can be identified by the response of the oil, gas and water in gas logging. Since oil, light oil condensate gas reservoirs and gas reservoir properties are similar, it is difficult to distinguish the reservoir types by conventional logging data. In this paper, the discussion focus is mainly on the principle and application effect of the light hydrocarbon ratio method, PIXLER interpre- tation method, triangle plates and other methods, and other gas logging parameters to identify the reservoir types and fluid properties are also discussed. The gas logging method we proposed has good practical application effect in the study area.