页岩气储层总有机碳含量测井评价新方法

A New Method of TOCContent Evaluation in Shale Gas Reservoirs with Log Data

对页岩气储层总有机碳含量(TOC)测井评价新方法进行了探索。利用有机质在电阻率测井和自然伽马测井中的不同响应特征以及数字岩石物理实验模拟的结果,提出了双泥质含量评价TOC含量的方法。利用双泥质含量法对实际资料进行了处理,并对处理结果与岩心TOC进行了验证和对比分析。双泥质含量法评价TOC方法精度较高,且方便易行,对于仅有常规测井曲线的地区可选择该方法进行TOC的评价。

Focusing on the new method of TOC well log evaluation for shale gas reservoirs,we analyzed the resistivity and gamma ray logging response characteristics of organic matters and the digital petrophysical experiment simulation results and put forward the dual-shale-content TOC evaluation method.By processing the actual data with dual-shale-content method and comparing the calculation result with the core data,the validation of this method is confirmed.The result analysis shows that the dual-shale-content TOCcontent evaluation method is high accuracy and convenience,which is easy to apply to the TOCcontent evaluation in the areas or well sections with only conventional logging curve acquired.