基于地震数据体结构识别与划分含油气单元

Research on Identification of Oil and Gas Unit Based on the Seismic Data Structure

摘要: 油气藏(田)勘探是地球物理勘探的重要任务，油气单元的有效识别与划分是油气藏(田)勘探成败的关键，是提高油气勘探效率、降低勘探风险的主要手段和途径。通过建立水平层状介质模型，分析含气、含油、含水3种情况下的地球物理响应特征，并利用灰色系统理论方法提取和分析地震数据体结构特征。结合实际资料研究表明，在含气、含油情况下，地震数据存在明显的结构特征异常，可以有效识别与划分含油气单元。

Abstract: The prospecting of the gas and oil reservoir (field) was one of the major tasks of geophysical ex-ploration. The identification and classification of oil and gas unit was the key to the success or failure of the reservoir (field) exploration, also the major tool and ways for improving the efficiency of oil & gas exploration and reducing the risks in exploration. Through the establishment of horizontally layered model, the geophysical response characteristics of gas, oil and water were analyzed, and a gray system theory was used to extract and analyze the characteristics of seismic data structure. Combined with the actual data, the results show that for the existence of gas and oil, there exists obvious structural abnormality in seismic data, by which the oil and gas units can be identified and classified effectively.