地震资料低程度区构造圈闭的识别方法及应用——以锦州20-A构造为例

Identification method of structure traps and its application in low seismic data degree areas:case studies on JZ20-A structure

张中巧 王军 吴俊刚 柴永波 王伟

ZHANG Zhongqiao WANG Jun WU Jungang CHAI Yongbo WANG Wei

中海石油(中国)有限公司天津分公司渤海油田勘探开发研究院, 天津塘沽 300452

Institute of Petroleum Exploration and Development of CNOOC Bohai Oilfield Company, Tianjin 300452, China

高精度三维地震勘探技术的应用提高了构造圈闭的落实程度,降低了油气的钻探风险。但在三维地震资料未完全覆盖且地震资料品质较差的区域,如何利用现有技术手段准确落实构造圈闭,给实际工作带来了困难。针对这些难点,综合应用时间切片技术、二维、三维地震资料联合解释技术、地质模式指导下的构造解释技术、精细构造成图技术,在锦州20-A构造的识别中取得了良好的应用效果,经钻探也获得了很好的油气发现。该套技术组合在类似地区的构造圈闭识别中具有一定的借鉴意义。

The application of high precision three-dimensional seismic exploration technologies have confirmed the existence of structure traps greatly, and also reduced the risk of drilling. While in those areas which has incomplete 3D coverage and low quality of seismic data, it is difficult to describe the structure traps accurately with current technical methods. According to these difficulties, in this pa-per, four geophysical techniques were synthetically applied such as time slice technology, 2D/3D combined interpretation technology, structure interpretation under the guidance of geological mode and fine structure mapping technology and made good effects in the iden-tification of structure trap in JZ20-A structure, and also obtained good petroleum discovery by drilling. It's proved this set of technolo-gies has certain reference in structure identification for similar areas.

https://doi.org/10.3969/j.issn.1008-2336.2011.04.029