吉林大学学报(地球科学版) ›› 2019, Vol. 49 ›› Issue (1): 13-25.doi: 10.13278/j.cnki.jjuese.20180112
• 大陆架科学钻探 • 上一篇
吴志强1,2, 郭兴伟1,2, 赵维娜3, 张训华2,4, 祁江豪1,2, 张晓华1,2,5, 蔡来星1,2
Wu Zhiqiang1,2, Guo Xingwei1,2, Zhao Weina3, Zhang Xunhua2,4, Qi Jianghao1,2, Zhang Xiaohua1,2,5, Cai Laixing1,2
摘要: 2014年,大陆架科学钻探项目(CSDP)确定采用自主研发的轻便型海洋钻井平台"探海1号"在南黄海盆地中部隆起上实施首口科学钻探井(CSDP-2井),其科学目标是探查中部隆起的中-古生界地质结构和油气地质条件,解决南黄海中部隆起海相残留盆地长期悬而未决的地层属性问题,同时为区域地质、海陆演化与海相油气资源前景研究和评价提供基础资料。据此确定钻孔的选址原则为:钻探海域水深不超过30 m,在预定2 800 m的钻探深度范围内钻遇多套完整的中-古生界海相地层。根据钻探目标和选址原则,针对中部隆起没有钻探资料的状况,以区域地质特征和周边钻井对比为参考,以地震资料多属性解释为手段,标定了地震反射层位,解释并编制了反射层构造图,拟定了钻探井位,预测了钻探层位;采用地震储层预测技术预测了有利储层。上述工作形成了无井勘探区的钻探井位部署技术流程和方法,经钻探厘定了三叠纪-奥陶纪海相沉积层,并发现了多个油气显示层,达到了预定钻探目标。
中图分类号:
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