| 银根—额济纳旗盆地下白垩统银根组的确立 |
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| 引用本文： | 卫平生,张虎权,陈启林,张景廉.银根—额济纳旗盆地下白垩统银根组的确立[J].地层学杂志,2007,31(2):184-189. |
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| 作者姓名： | 卫平生 张虎权 陈启林 张景廉 |
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| 作者单位： | 1. 中国石油勘探开发研究院西北分院,甘肃兰州,730020
2. 中国石油勘探开发研究院西北分院,甘肃兰州,730020;西南石油学院,四川成都,610500 |
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| 基金项目： | 中国石油天然气集团公司“九五”油气勘探科技工程项目“中国北方侏罗系”所属课题“河西走廊—银根诸盆地综合评价及勘探目标选择”(970207-34(2))成果。 |
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| 摘 要： | 银根—额济纳旗盆地是中国西部的一个中新生代沉积盆地,盆地地层有多种不同的划分。近几年来,盆地经历了详细的石油勘探和地质调查。在地震和钻井勘探过程中,于下白垩统发现了一套新的地层单元,这套地层的古生物、电性、岩性、物理特征及地震层序与上覆和下伏地层有很大差别。这套新地层位于下白垩统上部,定名为银根组(K1y),银根组中部有良好储层,上部泥岩可作为区域性盖层,与下部烃源岩构成良好的生储盖组合,有一定的勘探意义。
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| 关 键 词： | 古生物 岩性 地震层序 银根组 下白垩统 银根—额济纳旗盆地 内蒙古 甘肃 |
| 文章编号： | 0253-4959(2007)02-0184-06 |
| 修稿时间： | 09 2 2006 12:00AM |
THE LOWER CRETACEOUS YINGEN FORMATION IN THE YINGEN-EJINAQI BASIN |
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| WEI Ping-sheng,ZHANG Hu-quan,CHEN Qi-lin,ZHANG Jing-lian.THE LOWER CRETACEOUS YINGEN FORMATION IN THE YINGEN-EJINAQI BASIN[J].Journal of Stratigraphy,2007,31(2):184-189. |
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| Authors: | WEI Ping-sheng ZHANG Hu-quan CHEN Qi-lin ZHANG Jing-lian |
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| Institution: | 1. Northwest Branch, Research Institute of Petroleum Exploration and Development, PetroChina , Lanzhou , 730020; 2. Southwest Petroleum Institute, Chengdu, 610500 |
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| Abstract: | The Yingen—Ejinaqi Basin is a Mesozoic—Cenozoic sedimentary basin in northwestern China. The stratigraphy of the Yingen—Ejinaqi Basin is poorly understood. In recent years, petroleum exploration and geological investigation in the basin has resulted in a better understanding of the stratigraphy in this basin. On the basis of seismic and drill core data, a new lithostratigraphic unit of Lower Cretaceous age is recognized. The paleontological, lithological, electrical and physical properties, and seismic characteristics of this unit are distinct from the overlying and underlying strata. This new unit is named as the Yingen Formation (K_1y) and is considered late Early Cretaceous in age. The implications of this new stratigraphic unit for oil exploration in the Yingen—Ejinaqi Basin are also discussed. |
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| Keywords: | paleontology lithology seismic sequence Yingen Formation Lower Cretaceous Yingen-Ejinaqi Basin Inner Mongolia Gansu |
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