摘要
在气测录井过程中,全烃与烃组分是由不同测量系统测得的两个重要参数,一直以来录井行业对全烃与烃组分总量的关系有不同的认识和探讨,对全烃与烃组分之和的差异值随地层油气异常增强而增大的现象没有引起重视并给予明确的解析。为此,通过现场实验和对比分析的方法,探讨了产生差异的原因,分析了实际烃参数测量的过程,定义了5个重要的烃参数,并明确了这5个烃参数的物理意义,即:气态烃总量表示检测分析的气态烃组分体积分数总和;气态烃质量浓度表示气态烃组分分子质量浓度总和;全烃表示气态烃与液态烃分子质量浓度总和;液态烃质量浓度表示液态烃组分分子质量浓度总和;油性指数表示液态烃与气态烃的质量浓度比值。在此基础上提出了利用全烃、气态烃质量浓度、气态烃总量三者之间的关系与差异分析参与气测解释,通过实例证实该方法与如今常用的分析方法结合,可以进一步提高气测解释结果的可靠性。
During gas logging,total hydrocarbon and hydrocarbon component are two important parameters detected by different measuring systems,ever since mud logging industry had different recognitions and discussions on the relationships of total hydrocarbon and the total amount of the hydrocarbon components,and hasn't paid much special attention to and explained definitively the phenomena that the differential values of the sums of the total hydrocarbon and hydrocarbon components increased with the abnormal enhance of formation oil and gas.Thus by testing on site and comparison, the paper discussed the reasons that produced differential, analyzed the process of measuring the practical hydrocarbon parameters,defined 5 important hydrocarbon parameters and clarified their physical meaning,which were that the gaseous hydrocarbon quantum expressed the sum of components volume fraction of gaseous hydrocarbon detected and analyzed,the mass concentration of gaseous hydrocarbon expressed the sum of the mass concentration of the component molecules in gaseous hydrocarbon,total hydrocarbon expressed the sum of molecule mass concentration of the gaseous and liquid hydrocarbon,the mass concentration of liquid hydrocarbon expressed the sum of the molecule mass concentration in liquid hydrocarbon components and the oil property index expressed the mass concentration ratio of liquid and gaseous hydrocarbons.On this basis,the author provided that adopting the relationships among total hydrocarbon, gaseous hydrocarbon mass concentration,gaseous hydrocarbon sum and the differential analysis in gas logging interpretations can further improve the reliability of gas logging interpretation results by combing it with commonly used methods.
出处
《录井工程》
2009年第1期15-17,36,共4页
Mud Logging Engineering
关键词
气态烃总量
气态烃
液态烃
差异
油性指数
差异分析
储集层
gaseous hydrocarbon quantum
gaseous hydrocarbon
liquid hydrocarbon
differential
oil property index
differential analysis
reservoir
