Abstract：Typical continental shale oil is developed in the Chang 7 member of the Triassic Yanchang Formation in Huanxian,which is located in the southwest of Ordos Basin. In this area,the Chang 71 and Chang 72 reservoirs are the main targets for shale oil exploration and development. The shale oil re-servoirs in the two sections are a lithological combination of shale mixed with multi-phase thin silty fine sandstone. The single sand body is thin with mostly 3~5m,and lateral changes of reservoirs are fast,which leads to difficult prediction based on seismic data. On the basis of 3D seismic data,this paper analyzes seismic response characteristics of different types of reservoirs and employs the seismic attribute extraction and analysis technology provided by the GeoEast interpretation system. The distribution of oil sand bodies in the Chang 71 and Chang 72 members of the shale is described finely through attribute optimization and multi-attribute fusion. Additionally,the advantages of single-frequency phase-shift attributes in identifying thin reservoirs and fluids are leveraged to predict the shale oil reservoirs. The single-frequency phase-shift seismic attribute analysis technique has been applied to the trajectory design and guidance while drilling of horizontal wells in the Huanxian area and has yielded good results.
曾亚丽, 龙盛芳, 吴朦朦, 高楠, 杨超. 基于GeoEast地震属性分析的储层预测技术及其在环县地区页岩油勘探开发中的应用[J]. 石油地球物理勘探, 2022, 57(s1): 196-201.
ZENG Yali, LONG Shengfang, WU Mengmeng, GAO Nan, YANG Chao. Reservoir prediction technique based on GeoEast seismic attribute analysis and its application in shale oil exploration and development in Huanxian. Oil Geophysical Prospecting, 2022, 57(s1): 196-201.
杨智, 侯连华, 陶士振, 等.致密油与页岩油形成条件与"甜点区"评价[J].石油勘探与开发, 2015, 42(5):555-565.YANG Zhi, HOU Lianhua, TAO Shizhen et al. Formation conditions and "sweet spot" evaluation of tight oil and shale oil[J].Petroleum Exploration and Deve-lopment, 2015, 42(5):555-565.
[2]
杨华, 梁晓伟, 牛小兵, 等.陆相致密油形成地质条件及富集主控因素:以鄂尔多斯盆地三叠系延长组7段为例[J].石油勘探与开发, 2017, 44(1):12-20.YANG Hua, LIANG Xiaowei, NIU Xiaobing, et al. Geological conditions for continental tight oil formation and the main controlling factors for the enrichment:A case of Chang 7 Member, Triassic Yanchang Formation, Ordos Basin, NW China[J]. Petroleum Exploration and Development, 2017, 44(1):12-20.
[3]
杨春生, 姜岩, 宋宝权, 等. 小河道薄砂层井震联合识别技术及应用——以大庆长垣西部AGL地区为例[J]. 石油地球物理勘探, 2022, 57(1):159-167.YANG Chunsheng, JIANG Yan, SONG Baoquan, et al. Recognition technology integrating logging and seismic data for thin sand reservoir in narrow channel and its application:Taking the AGL area in western Daqing placanticline as an example[J]. Oil Geophysical Prospecting, 2022, 57(1):159-167.
[4]
范洪军, 范廷恩, 王晖, 等.地震波形分类技术在河流相储层研究中的应用[J].CT与应用研究, 2014, 3(1):71-80.FAN Hongjun, FAN Tingen, WANG Hui, et al. Application of seismic waveform classification technique in the study of fluvial reservoir[J].CT Theory and Applications, 2014, 23(1):71-80.
[5]
孟瑞刚, 张家良, 成洪文, 等.地震属性技术在张巨河油田综合解释中的应用[J].石油地球物理勘探, 2018, 53(增刊1):138-143.MENG Ruigang, ZHANG Jialiang, CHENG Hongwen, et al.Comprehensive interpretation with seismic attributes in Zhangjuhe Oilfield[J].Oil Geophysical Prospecting, 2018, 53(S1):138-143.
[6]
丁峰, 尹成, 徐峰, 等. 一种基于灵敏属性分析的相关聚类属性优化方法[J]. 石油地球物理勘探, 2008, 43(5):568-572.DING Feng, YIN Cheng, XU Feng, et al. An optimizing method of correlative cluster attribute based on sensitive attribute analysis[J]. Oil Geophysical Prospecting, 2008, 43(5):568-572.
[7]
郑江峰, 彭刚, 孙佳林, 等.基于90°相移的振幅和频率属性融合法油气检测[J].石油物探, 2019, 58(1):130-138.ZHENG Jiangfeng, PENG Gang, SUN Jialin, et al.Fusing amplitude and frequency attributes for hydrocarbon detection using 90° phase shift data[J].Geophysical Prospecting for Petroleum, 2019, 58(1):130-138.
[8]
陈春继, 冯世民, 莫阿玲, 等. 90°相移技术在岩性解释中的应用[J]. 石油地球物理勘探, 2012, 47(1):95-99.CHEN Chunji, FENG Shimin, MO Aling. Application of 90° phase data in lithologic interpretation[J]. Oil Geophysical Prospecting, 2012, 49(1):95-99.
[9]
郑建雄, 朱斗星, 袁立川, 等.非常规水平井地震导向关键参数分析及预测方法[J].石油地球物理勘探, 2021, 56(5):1170-1179.ZHENG Jianxiong, ZHU Douxing, YUAN Lichuan, et al. Analysis and prediction method of key parameters for seismic steering of unconventional horizontal wells[J].Oil Geophysical Prospecting, 2021, 56(5):1170-1179.
