基于AVO属性的海上深层气藏天然气富集区预测  

Prediction of Enrichment Zones of Natural Gas in Deep Off-Shore Layer Based on AVO Attributes

作　　者：贾跃玮[1] 魏水建[1] 史云清[1] 

机构地区：[1]中国石化石油勘探开发研究院,北京100083

出　　处：《中国造船》2017年第A01期210-215,共6页Shipbuilding of China

摘　　要：东海陆架盆地西湖凹陷花港组气田天然气资源丰富,但储层物性较差,流体地震响应特征弱,储层气水关系复杂.储层流体有效识别和预测是此类近致密气藏精细开发的关键.在叠前地震道集提高品质处理及储层精细标定的基础上,开展致密砂岩含气储层AVO响应特征的分析,明确不同类型含气储层AVO响应类型,优选流体因子属性以预测含气储层展布范围.通过进一步挖掘AVO流体因子属性中所蕴含的流体类型信息,划定研究区气水流体因子属性分异界限,实现了海上深层致密砂岩储层含气性的预测.实际应用表明,预测结果与实钻井符合率较高.这对其它海上致密砂岩储层含气性预测研究具有借鉴意义.Huagang gas field located at the shelf basin in the East China Sea has rich natural gas resources,but the physical property and fluid seismic response features of the tight sand reservoir are poor, and the water-gas relationship is very complicated. Effective identification and prediction on a reservoir of gas-bearing are key to fine exploration and production. Based on the quality of pre-stack seismic gathering A V O response feature of the tight sand gas-bearing is analyzed. Selected fluid factor attribute is applied to a qualitative prediction of the distribution area of gas- bearing. Based on the analysis of information buried in the factor of A V O fluid attribute,a distinguished line between gas and water is designated,that makes gas-bearing prediction on deep off-shore reservoir possible. Practical application reveals that prediction results have high coincidence rate for drilled wells. This paper has reference meaning to the prediction of gas-bearing for other tight sand reservoirs .

关 键 词：致密砂岩 AVO属性 流体因子 流体预测 

分 类 号：TE58[石油与天然气工程—油气田开发工程]