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Study of controlling factors of Carboniferous stratigraphic and structural traps and the favorable areas in the east of Sichuan Province
Author(s): Kang Baoping, Zhang Jian, Zhang Zhiyong, Peng Guangming, Liao Kaigui
Pages: 40-
45,115
Year: 2008
Issue:
2
Journal: OFFSHORE OIL
Keyword: 石炭系; 地层-构造复合圈闭; 古岩溶; 控制因素; 有利区带;
Abstract: 根据川东石炭系实钻资料,结合前人资料对石炭系地层-构造复合圈闭进行了分类和总结;在此基础上,对川东石炭系地层-构造复合圈闭的控制因素进行了研究.研究表明沉积相是地层-构造复合圈闭的次要控制因素,而古岩溶、古构造是其主要控制因素;在此过程中,根据黄龙组残余厚度分布状况提供的岩溶剥蚀强度信息、经压实恢复上覆梁山组碳质泥岩等厚度图反映的黄龙组顶面侵蚀地形变化印模及由岩溶相组合特征所显示的古水文条件,恢复了川东地区黄龙组古岩溶地貌.在分析古岩溶地貌单元古水文状况、溶蚀方式和强度、古构造及古岩溶厚度的基础上,对川东内古岩溶进行了区块划分.最后综合了各种资料,对川东石炭系地层-构造复合圈闭有利区带进行了预测.
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