柴西乌南-绿草滩地区古近系下干柴沟组下段储盖组合与勘探潜力

英文篇名：Reservoir-seal associations and hydrocarbon potential of the lower member of the Palaeogene Xiaganchaigou Formation in the Wunan-Lucaotan region,western Qaidam Basin,Qinghai
中文刊名：沉积与特提斯地质
英文刊名：Sedimentary Geology and Tethyan Geology
作者：易定红 ; 王斌婷 ; 曹正林 ; 裴明利 ; 刘应如
英文作者：YI Ding-hong ; WANG Bin-ting ; CAO Zheng-lin ; PEI Ming-li ; LIU Ying-ru(Northwestern Branch ; Research Institute of Petroleum Exploration and Development ; PetroChina ; Lanzhou 730020 ; Gansu ; China)
中文关键词：柴达木盆地 ; 下干柴沟组下段 ; 基准面旋回 ; 储盖组合 ; 勘探潜力
英文关键词：Qaidam Basin ; lower member of the Xiaganchaigou Formation ; base-level cycle ; reservoir-seal association ; hydrocarbon potential
出版日期：2010-03-15
机构：中国石油石油勘探开发研究院西北分院;
年：2010
期：01
出版单位：沉积与特提斯地质

摘要

运用层序地层学的理论和方法,综合钻井、测井和三维地震资料,在柴西乌南-绿草滩地区古近系下干柴沟组下段识别出两个层序界面,将其划分为1个长期基准面旋回(三级层序)LSC1和4个中期基准面旋回(四级层序)MSC1、MSC2、MSC3和MSC4。在等时地层格架约束下,详细分析了研究区储集层、盖层及储盖组合的发育规律与基准面旋回的内在联系,指出本区古近系下干柴沟组下段具有较大的油气勘探潜力。
The lower member of the Palaeogene Xiaganchaigou Formation in the Wunan-Lucaotan region,western Qaidam Basin,Qinghai comprises two sequence boundaries including one long-term base-level cycle(third-order sequence) LSC1 and four medium-term base-level cycles(fourth-order sequence) MSC1,MSC2,MSC3 and MSC4 on the basis of cores,well logs and three-dimensional seismic data.The study of the reservoir-seal associations shows that the lower member of the Xiaganchaigou Formation may be highly prospective for hydrocarbon exploration.The favourable reservoir rocks consist of distributary channel sandstones and channel-mouth bar sandstones on the braided delta front in MSC3,where the composite tectonic-lithologic oil pools and lithologic oil pools are hosted.

引文

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