| 鄂尔多斯盆地丰富川油田西部探区延长组沉积演化特征研究 |
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| 引用本文： | 郑忠文,;吴彦君.鄂尔多斯盆地丰富川油田西部探区延长组沉积演化特征研究[J].西北地质,2014(3):110-120. |
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| 作者姓名： | 郑忠文 ;吴彦君 |
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| 作者单位： | [1]长安大学地球科学与资源学院,陕西西安710054; [2]延长油田股份有限公司青化砭采油厂,陕西延安716000 |
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| 基金项目： | 中国石油天然气股份有限公司科学研究与技术开发项目“致密气藏测井釆集处理与评价技术研究”（2010E-2304）; 国家科技重大专项“复杂油气田地质与提高采收率技术”（2009ZX05009）联合资助 |
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| 摘 要： | 丰富川油田西部探区为多层系低渗透复合含油区,储层沉积类型复杂多样,沉积演化在很大程度上控制着油藏的富集。利用钻井、岩心、测井、生产动态等资料,深入分析了该区主要含油层系延长组长2、长4+5、长6沉积相标志、物源方向、沉积构造等特征,建立了多期沉积序列体系,并进行沉积演化特征分析。研究结果表明,延长组主要发育为三角洲沉积体系;沉积物主要通过分流河道由北东向南西输入湖盆,不同时期发育的河道展布继承性较好,充分阐明了该区延长组主要含油层段的沉积规模与沉积演化特征;在同一小层内部,河道展布的继承性较好,且组成的良好储盖组合,为油田下步勘探与寻找油藏富集有利区提供可靠保障。
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| 关 键 词： | 相标志 物源 沉积演化 |
Study on Sedimentary and Evolution Characteristics of the Yanchang Formation in Western Exploratory Area of Fengfuchuan Oilfield in Ordos Basin |
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| Institution: | ZHENG Zhong-wen , WU Yan-jun (1. The School of Earth Science and Resources, Chang＇an University, Xi＇an 710054, China ; 2. Qinghuabian Oil Production Plant, Yanchang Oil Field Co. , Ltd, Xi＇an 716000, China) |
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| Abstract: | The western exploratory area of Fengfuchuan Oilfield is a composite petroliferous region of multilayer and low permeability. The reservoir sedimentary is complicated. The sedimentary and evolution control the reservoir enrichment in a large part. This paper deeply analyzed the sedimentary facies, provenance and the sedimentary structure of Chang 2, Chang 4q-5 and Chang 6 in the main oil-bearing series of Yanchang formation, then multiphase system of sedimentary succession was established and sedimentary evolution was analyzed. The results indicated that Yanchang formation mainly developed delta sedimentary system; sediments were imported into Basin from northeast to southwest through distributary channel and channel distribution in different period of the development had a good inheritance which fully illustrated the deposit scale and characteristics of sedimentary evolution of Yanchang formation in the main oil-bearing segment; better inheritance of the channel distribution and a good reservoir cap assemblage in the same layer will provide reliable support for the next exploration of favorable reservoir enrichment zone. |
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| Keywords: | Sedimentary facies flag Provenance Sedimentary evolution |
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