川东北普光气田飞仙关组鲕滩储集层预测

Reservoir prediction of Feixianguan Formation in Puguang Gas Field,Northeast Sichuan Province

普光气田是中国在碳酸盐岩地层中发现的第一个储量大于1千亿m3的大气田。分析普光气田飞仙关组鲕滩储集层地质特征,利用三维地震资料,在储集层精细标定、储集层地质建模与正演的基础上,确定储集层地震响应特征;分析储集层发育有利相带,采用地震属性分析和地震约束反演等技术进行储集层预测,建立了一套适合川东北飞仙关组鲕滩储集层的预测技术方法系列,预测了普光气田飞仙关组鲕滩储集层的分布,据此部署了7口井,其中完钻的普光4井获得高产气流,证实了储集层预测结果的正确性。

The Puguang Gas Field with reserves of over 100 billion cubic meters is the first giant one ever found in the carbonate rocks in China. The reservoir seismic response features were determined based on the analysis of the geological characters, accurate reservoir calibration, geological reservoir modeling and forward technology. A series of technologies for predicting oolite reservoir of Feixianguan Formation in the Puguang Gas Field were developed according to the analysis of favorable facies belts, seismic attributes and seismic constrained inversion. Based on these, seven wells were deployed. Among them,the finished Well Puguang 4 yields a high gas production and confirms the above prediction.