气测录井烃类气体组分脱气效率的计算方法  

The computation method of degassing efficiency for hydrocarbon gas components in drilling fluid during gas logging

作　　者：黄小刚 毛敏 

机构地区：[1]中法渤海地质服务有限责任公司

出　　处：《录井工程》2008年第4期17-20,共4页Mud Logging Engineering

摘　　要：气测录井脱气效率的高低,在一定程度上取决于脱气器的设计.一般意义上的脱气效率通常相对于气体总量而言,尚未涉及单一烃组分的脱气效率。在介绍FLAIR气测录井系统FLEX脱气器的基础上.以应用该系统为例.通过对多次检测值的指数回归处理,得出了不同烃类组分的脱气效率.进而得出了各烃类组分的校正系数,从而使求出钻井液中烃类气体的真实含量成为可能。实例分析表明.利用该方法所求出的烃类组分气体含量,与原始气体检测值相比组分值有较大程度提高.与地层测试PVT的组分分析结果相比几乎一致。The level of gas logging degassing efficiency depends on the design of the degasser on certain degree.Generally, the degassing efficiency is relative to total gas content on common meaning,which does not involve the degassing ef- ficiency of the single hydrocarbon component.On the basis of introducing FLEX degasser of FLAIR gas logging sys- tem,taking the practieal application as the example,the pa- per summarized the degassing efficiency of the different hy- drocarbon components by the regression treatment of the in- dex of detecting values of multi-times,and then got the cor- rection coefficients of various hydrocarbon components. Therefore it was made possible to obtain the true content of hydrocarbon gases in drilling fluid.It is showed by the practical analysis that the component value of gas content in hydrocarbon components extracted by this method is highly increased compared with that of the original gas detecting value,and is almost same with component analysis results of PVT formation test.

关 键 词：气测录井 烃组分 脱气效率 多次脱气 关系式 指数 回归处理 

分 类 号：TE622.14[石油与天然气工程—油气加工工程] TQ331.42[化学工程—橡胶工业]