地址:四川省成都市高新区天府大道北段12号中国石油科技大厦

电话:028-86015441;028-86015319

邮箱:gaskk@petrochina.com.cn

QQ群:489323588

您所在位置:首页->过刊浏览->天勘2019.3


中国海域深部“高富强”地震探测技术与南黄海盆地 海相地层的发现
"High, rich, and strong" seismic technologies for deeper layers in offshore China and discoveries in marine strata of South Yellow Sea Basin
陈建文1,2 袁 勇1,2 施 剑1,2 梁 杰1,2 刘 俊1,2 张银国1,2 雷宝华1,2
点击:15次 下载:4次
DOI:10.12055/gaskk.issn.1673-3177.2019.03.007
作者单位:1. 青岛海洋地质研究所 2. 海洋国家实验室海洋矿产资源评价与探测技术功能实验室
中文关键字:高覆盖次数 富低频成分 强震源能量 地震探测技术 中—古生代 崂山隆起 南黄海盆地
英文关键字:High fold; Rich low-frequency component; Strong source energy; Seismic technology; Mesozoic and Paleozoic; Laoshan uplift; South Yellow Sea Basin
中文摘要:我国近海新生代盆地之下发育更老的残留盆地,地层厚度大、分布广,但受特殊的地震地质条件的约束,难以获得深部地层的有效地震反射资料,制约了盆地深部油气资源的调查与勘探。2005 年以来,选择勘探程度较低的南黄海盆地,进行海上地震采集试验与数据处理攻关,目前已形成了采集、处理技术相结合的“高富强”地震探测技术。应用结果表明:①获得了南黄海崂山隆起中—古生界“高覆盖次数、富低频信号及强能量”的地震采集资料;②通过多方法精细速度分析与弯曲射线的叠前时间偏移处理,有效压制了各类多次波,而且使更多的远偏移距资料参与了成像,获得了中—古生界“高信噪比、富低频成分、强反射能量”的地震成像资料;③在原来深部没有有效反射的崂山隆起,纵向上可以划分7 个地震层序,是下扬子古生代盆地在海域的延伸。通过海域钻井证实后,首次建立了南黄海盆地中—古生界的海相地层层序并落实了多个大型构造圈闭。结论认为:南黄海盆地与上扬子区的四川盆地在古生代沉积时期具有相似的沉积建造与沉积演化史,下扬子区陆上古生代海相地层发育的3 套区域性烃源岩,与四川盆地大型—特大型油气田的油气烃源层具有可比性。
英文摘要:In offshore China, there are some older residual basins with thick strata and wide distribution developed below Cenozoic basins. Constrained by special seismic and geological conditions, however, most effective reflection data can be hardly acquired from deeper strata, which may restrict an exploration in deeper hydrocarbon resources in these older basins. Since 2005, offshore acquisition and data processing have been carried out in the less-exploited South Yellow Sea Basin. So far, many "high, rich, and strong" seismic
technologies which combine acquisition with processing have been developed. After their application, it is shown that (1) some seismic data of "high fold, rich low-frequency signal, and strong energy" is acquired from the Mesozoic and Paleozoic strata, Laoshan uplift, South Yellow Sea; (2) by conducting both multi-method fine velocity analysis and pre-stack time-migration processing of curved ray, various multiple waves are suppressed effectively and more far-offset data participates in imaging, so that most imaging data of
Mesozoic and Paleozoic with high noise-to-signal ratio, rich low-frequency component, and strong reflection energy are gained; and (3) this uplift without effective reflection from deeper layers can be vertically subdivided into 7 seismic sequences, meanwhile it's an extension of the Lower Yangtze Paleozoic basin into the sea ahead. After many drilling practices, it's for the first time that marine stratigraphic sequence of Mesozoic and Paleozoic in South Yellow Sea Basin is established, and several large structural traps are ascertained. It's deemed that both South Yellow Sea Basin and Sichuan Basin in Upper Yangtze area are similar from aspects of sedimentary formation and evolution history during Paleozoic deposition. There are 3 sets of regional source rocks developed in onshore Paleozoic marine strata, Lower Yangtze belt. And these source rocks can be correlated to others in some large-supergiant oil and gasfields, Sichuan Basin
读者评论

      读者ID: 密码:   
我要评论:
国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
版权所有©2019天然气勘探与开发》编辑部 蜀ICP备10004100号
本系统由北京菲斯特诺科技有限公司设计开发
您是本站第2445497名访问者