| 肖玲,魏钦廉,田景春.鄂尔多斯盆地西南部长6油层组浊流沉积及其分布特征[J].地质找矿论丛,2012,27(3):349-354 |
| 鄂尔多斯盆地西南部长6油层组浊流沉积及其分布特征 |
| Sedimentary characteristics and distribution of turbidite of Chang 6 oil reservoir formation in the southwest Ordos Basin |
| 投稿时间：2011-04-29 修订日期：2012-08-11 |
| DOI：10.6053/j.issn.1001-1412.2012.03.014 |
| 中文关键词: 鄂尔多斯盆地 长6油层组 浊流沉积 鲍马序列 地震反射 甘肃省 |
| 英文关键词:Ordos basin Chang 6 oil reservoirs turbidity Bouma sequence seismic reflection Gansu province |
| 基金项目:国家重大专项"大型油气田及煤层气开发"项目(编号:2008ZX05000-003-01)资助。 |
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| 中文摘要: |
| 在鄂尔多斯盆地西南部长6油层组的半深湖-深湖亚相中发育有大量的浊积岩,构成该地区主要储层类型,成为油气勘探的重要区域。其以薄互层的形式出现,具有分布不稳定、隐蔽性强的特点。文章从沉积构造、砂体结构、电性和地震反射等方面总结了浊流沉积的特征,采用地质、测井与地震相结合的技术手段,预测了长6油层组浊积砂体的平面分布特征。研究表明,长6油层组浊积砂体的空间展布形态及其发育规模存在2个明显区带:①华庆地区白豹—华池一带的缓坡型浊积岩,平面呈规模较大的层状体;②正宁—合水地区陡坡型浊积岩,平面呈规模较小的朵状、扇状。 |
| 英文摘要: |
| Turbidite is widely developed in the bathal-abysmal lake subfacies of Chang 6 oil reservoir formation in the southwestern ordos Basin.The trubidite constitutes main reservoirs in this area and is the important oil-gas exploration target.it is characterized by thin interbeds and irregular distribution thus tends to be disguised. This paper summarizes characteristics of the turbitite with respect of its sedimentary structure,structure of sand body,electric property and seismic reflection.Data of geology,logging and seismic survey are combined to predict plan distribution of the turbitite.Results show two obvious turbidite zones varied in spacial extension and and size of sand body:①Baibao-Huachi zone in Huaqing area whose turbitite was deposited on gentle slope with larger size of layeroid sand body in plan;②Zhengning-hesui zone whose turbidite deposited on steep slope with smaller size of sand body in flower and fan shape in plan. |
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