渤海湾盆地QHD 33区块特殊储集层录井特征分析

渤海湾盆地QHD33区块稠油储集层气测C1含量高而重烃微量或几乎没有,属于一种特殊气测烃组分结构组成的储集层,利用常规气测录井规律无法进行解释评价。针对这一问题,在分析该区块油藏形成环境和烃类菌解及对储集层影响的基础上,探讨了该类稠油储集层的岩石热解、热解气相色谱、气测以及常规岩屑与岩心分析的录井特征。实例分析表明,根据这些特征可实现该盆地QHD33区块特殊气测烃组分结构组成稠油储集层的有效解释评价,同时对该盆地其他区块非常规储集层的录井特征分析与解释评价具有参考意义。

Mud Logging characteristics of special reservoir for Bohai Bay Basin QHD 33 block

Gas logging C1 content in heavy oil reservoir of Bohai Bay Basin QHD 33 block is high and heavy hydrocarbon is trace or almost no,which belongs to a type of reservoir consisted of a special gas logging hydrocarbon composition,the conventional gas logging law can not explain this condition.To solve this problem,on the basis of analyzing the impact of the formation environment of the block reservoir and hydrocarbon bacteria solution,the authors discussed the rock pyrolysis,pyrolysis gas chromatography,the logging characteristics of gas logging as well as conventional cuttings and core analysis for this kind of heavy oil reservoir.The case study showed that effective interpretation and evaluation for QHD 33 block can be achieved based on these characteristics logging features.Meanwhile,it has reference value for the interpretation and evaluation of unconventional reservoirs for the other blocks of the Basin.