| 基于匹配追踪算法的叠后烃检技术在渤海QHD33/34构造的应用 |
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| 引用本文： | 张京思, 赵家琳, 蔡少武, 于娅. 基于匹配追踪算法的叠后烃检技术在渤海QHD33/34构造的应用[J]. 海洋地质前沿, 2017, 33(12): 60-65. doi: 10.16028/j.1009-2722.2017.12008 |
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| 作者姓名： | 张京思 赵家琳 蔡少武 于娅 |
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| 作者单位： | 中海石油(中国)有限公司天津分公司渤海石油研究院, 天津 300459 |
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| 基金项目： | 国家重大科技专项"近海隐蔽油气藏勘探技术"(2011ZX05023-002) |
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| 摘 要： | 渤海中北部海域的QHD33/34构造位于石臼坨凸起中段及中段东南部斜坡带上。受新构造运动影响，石臼坨凸起浅层发育一系列NE向、近EW向晚期活动断层，在斜坡带浅层明化镇组形成了多个断鼻、断块型圈闭，但是构造圈闭面积总体较小、幅度低，并且受断层对油气疏导作用影响，油气成藏有一定的风险。为揭示QHD33/34构造浅层储层的含油气性，应用基于匹配追踪算法的低频增加梯度异常对该区进行烃类检测，取得了一定效果。最终烃检结果与已钻井揭示的构造浅层储层含油气性较匹配，吻合率达到79%，应用烃检结果可进一步指导该构造井位部署，尽最大可能规避风险。通过研究表明，在研究区浅层，基于匹配追踪算法的低频增加梯度异常能够最大程度上识别油层与水层。该方法能够识别大于3 m的油层，水层则没有明显响应特征，应用该方法进行烃类检测，效果明显。
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| 关 键 词： | 石臼坨凸起 匹配追踪 烃类检测 频率衰减梯度 渤海 |
| 收稿时间： | 2017-04-13 |
APPLICATION OF POST-STACK HYDROCARBON DETECTION TECHNOLOGY BASED ON MATCHING PURSUIT ALGORITHM TO QHD33/34 STRUCTURE,BOHAI BAY BASIN |
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| ZHANG Jingsi, ZHAO Jialin, CAI Shaowu, YU Ya. APPLICATION OF POST-STACK HYDROCARBON DETECTION TECHNOLOGY BASED ON MATCHING PURSUIT ALGORITHM TO QHD33/34 STRUCTURE, BOHAI BAY BASIN[J]. Marine Geology Frontiers, 2017, 33(12): 60-65. doi: 10.16028/j.1009-2722.2017.12008 |
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| Authors: | ZHANG Jingsi ZHAO Jialin CAI Shaowu YU Ya |
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| Affiliation: | Bohai Oilfield Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300459, China |
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| Abstract: | The structure of QHD33/34 is located on the middle and southeastern middle slope of the Shijiutuo Uplift. Affected by neo-tectonic movement, there are a series of NE and EW active faults in the shallow part of the Shijiutuo Uplift, and a number of fault-nose and fault-block traps have been found in the Minghuazhen Formation at the shallow zone of the slope belt. However, the structural traps are generally small in scale and low in amplitude. Migration and accumulation of oil and gas are easy to be affected by the faults. In order to reveal the oil-gas-bearing possibility of shallow reservoir in the structure QHD33/34, the method of low-frequency gradient anomaly based on the matching pursuit algorithm is used to detect the hydrocarbons in this area. The agreement rate between the final result of hydrocarbon detection and oil-gas-bearing possibility of shallow reservoir may be as high as 79%. The results suggest that the method is effective to the identification of both the oil reservoir and water layer to the greatest extent and useful for well location placement in the shallow part of the structure, and helpful to avoid risks as much as possible. Using this method we may identify the oil reservoir thicker than 3 meters, but response to water layer is not clear. |
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| Keywords: | Shijiutuo Uplift matching pursuit hydrocarbon detection frequency attenuation gradient Bohai Bay |
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