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下二门地区的测井、钻井资料较少,而地震资料相对丰富。为了寻找研究区岩性油气藏,利用目的层地震反射波的振幅、频率、吸收系数、能量半衰时等地震属性作为烃类检测因子,对研究区岩性油气藏进行分析。根据烃类检测因子的异常响应特征,以精细地震解释为基础,结合测井、钻井资料对研究区储层进行预测。通过研究,吸收衰减属性对该区H3-2砂组岩性油气藏有很好的异常响应,识别出了H3-2砂组岩性油气藏的分布范围和含油气性,并得到钻井的证实。
The logging in the Xiaermen area has fewer drilling data and relatively abundant seismic data. In order to find the lithologic reservoirs in the study area, the seismic attributes of the seismic reflection waves in the target layer, such as amplitude, frequency, absorption coefficient and energy half-decay time, are used as hydrocarbon detection factors to analyze lithologic reservoirs in the study area. According to the abnormal response characteristics of hydrocarbon detection factors, based on the fine seismic interpretation, the reservoir of the study area is predicted based on well logging and drilling data. Through the study, the absorption and attenuation attributes have a very good anomalous response to the lithologic reservoirs of H3-2 sand group in this area, and the distribution range and oil and gas bearing capacity of lithologic reservoirs of H3-2 sand group have been identified and confirmed by drilling .