下寺湾油田延长组长7油层成藏地质特征分析
Geology Characteristics of Chang-7 Reservoir of Yanchang Formation in Xiasiwan Oil field
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摘要: 下寺湾油田长7油层浊积砂体连片分布，储层物性较好，形成较好的储集体，其上长64—长63泥岩与凝灰质泥岩发育，形成良好的区域及其局部的盖层。长7底部油页岩为优质烃源岩，有机质丰度高，有机质类型为Ⅰ型（腐泥型）-Ⅱ1（腐殖-腐泥型）；长7油层生储盖匹配良好，形成自生自储式复合油藏（岩性、裂缝油藏），连通孔隙及砂体叠置点、裂缝为油气进行运移的重要通道。延长组长7油层是鄂尔多斯盆地东南部继延长组长6、长2外新的勘探领域，具有良好的勘探前景。Abstract: Turbidite sand body distributed all over in Chang-7 reservoir of Xiasiwan oil field. The reservoir physical property is good enough to form a better reservoir body. Mudstone and tuff development in Chang-64 and Chang-63 formed a good cover for the area. The bottom oil shale of Chang-7 reservoir is high-quality hydrocarbon source rocks with abundant organic matters, which are Type I (sapropel type) -Type Ⅱ1 (humic-sapropelic type); the perfect source-reservoir-cap matching of Chang-7 reservoir lead to the formation of composite oil reservoir(lithology and fracture reservoir) with its source and reservoir in the same coal seam. Connecting pores, superimposed points of sand bodies, and cracks are important channels for oil-gas migration. Except for Chang-6 and Chang-2 reservoir, Chang-7 reservoir is a new exploration area in southeastern Ordos basin, and has promising exploration prospect.
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Key words:
- reservoir characteristics /
- Chang-7 reservoir /
- Xiasiwan /
- Ordos basin
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谢渊.鄂尔多斯盆地富县探区上三叠统延长组层序地层与储层研究[M].成都:成都理工大学, 2002.
Xieyuan. Research on Reservoir of Yanchang formation of upper triassic in Fuxian exploration area of the Ordos Basin[M]. Chengdu University of Technology, Chengdu, 2002.
赵俊兴, 陈洪德, 付锁堂, 等.鄂尔多斯盆地南部延长组中几个重要事件沉积及其油气聚集关系[J].矿物岩石, 2008, 28(3):90-95.
Zhao Junxing, Cheng Hongde, Fu Suotang, et al.discussion on some important deposition events and their relationship with hydrocarbonaccumulation of YanChang formation in south ordos basin[J].Journal of Mineralogy and Petrology, 2008, 28(3):90-95 李树同, 王多云, 王彬.坳陷型湖盆缓坡边缘沉积坡折带的识别[J].天然气地球科学, 2008, 19(1):83-88.
Li Shutong, Wang Duoyun, Wangbing. Identification of Sedimentary Slope Breaks in the Margin of a Down Warped Lake Basin's Ramp Belt[J]. Natural Gas Geoscience, 2008, 19 (1):83-88.
武富礼, 李文厚, 李玉宏.鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J].古地理学报, 2004, 6(3):307-315.
Wu Fuli, Li Wenhou, Li Yuhong. Delta sediments and evolution of the Yanchang Formation of Upper Triassic in Ordos Basin[J].Journal of Palaeogeography, 2004, 6(3):307-315.
郭艳琴.富县探区延长组储层微观特征研究[D]. 西安:西北大学, 2006.
Guo Yanqing. Research on Reservoir Micro-characteristic of Yanchang Formation in Fuxian Exploration Area of the Ordos Basin[D]. Northwestern University, Xi'an, 2006.
杨俊杰.鄂尔多斯盆地构造演化与油气分布规律[M]. 北京:石油工业出版社, 2002.
Yang Junjie.Regional tectonic evolution and distribution of Ordos Basin[M].Petroleum Industry Press, BeiJing, 2002.
杨华, 付金华, 喻建. 陕北地区大型三角洲油藏富集规律及勘探技术应用[J].石油学报, 2003, 24(3):6-10.
Yanghua, Fu Jinghua, Yujian.Oil reservoir enrichment patterns of large delta systems and Application of exploration techniques in Shanbei area[J]. Acta Petrolei Sinica, 2003, 24(3):6-10.
陈全红.鄂尔多斯盆地南部三叠系延长组沉积体系与层序地层学分析[D], 西安:西北大学, 2004.
Cheng Quanhong.The Sequence stratigraphy analysis and Sedimentary System of YanChang formation in south ordos basin[D]. Northwestern University, Xi'an, 2004.
郑荣才, 文华国.鄂尔多斯盆地白豹地区长6油层组湖底滑塌浊积扇沉积特征及其研究意义[J]. 成都理工大学学报, 2006, 33(6):566-575.
Zheng Rongcai, Wen Guohua. Discovery and significance of sublacustrine slump turbidite fans in Chang 6 oil-bearing formation of Baibao region in Ordos Basin, China[J].Journal of Chengdu University of Technology, 2006, 33(6):566-575.
付国民.鄂尔多斯盆地东南缘三叠系延长组物源及沉积体系特征[J].矿物岩石, 2010, 119(1):25-32.
Fu Guoming.The provenance and features of depositional system in the YanChang formation of triassic in southeast area of Ordos basin[J].Journalof Mineralogy and Petrology, 2010, 119(1):25-32. 宋和平, 张炜.鄂尔多斯盆地下寺湾地区三叠系下组合地层石油地质特征及勘探方向[J].西北地质, 2011, 44(4):122-131.
Song Heping, Zhangwei. Oil Geological Characteristics and Exploration Trend of Triassic Lower Group in Xiasiwan Area of Ordos Basin[J]. Northwestern Geology, 2011, 44(4):122-131.
郝世彦, 李旦. 志丹油田义正区三叠系延长组长6石油地质特征[J].西北地质, 2005, 38(4):94-101.
Hao Shiyan, Lidan.Oil-geology characteristics of Triassic system Yanchang Formation Chang-6 reservoir in Yizheng area of Zhidan oil field[J].Northwestern Geology, 2005, 38(4):94-101.
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