新疆石油地质

新疆石油地质 ›› 2004, Vol. 25 ›› Issue (1): 125-127.

• 油气勘探 • 上一篇    下一篇

延安三角洲储集层特征

徐政语1, 董义龙2, 崔建军3, 林舸4   

  1. 1.中国石油石油勘探开发科学研究院杭州地质研究所,浙江杭州310023;
    2.西南石油学院,四川南充637001;
    3.华北石油地质局第九普查大队,山西榆次030600;
    4.中国科学院广州地球化学研究所,广东广州510640
  • 收稿日期:2003-03-06 出版日期:2004-02-01 发布日期:2020-08-14
  • 作者简介:徐政语(1964-),男,湖北黄梅人,高级工程师,博士,石油地质。联系电话:0571-85224978

Reservoir Characteristics of Yan 'an Delta

XU Zheng-yu1, DONG Yi-long2, CUI Jian-jun3, LIN Ge4   

  1. 1. Hangzhou Institute of Petroleum Geology, PetroChina, Hangzhou, Zhejiang 3 10023, China;
    2. Southwest Petroleum Institute,Nanchong, Sichuan 637001, China;
    3. No.9 Survey Team of Huabei Petroleum Geology Bureau, Yuci, Shanxi 030600, China;
    4. Guangzhou Institute of Geochemistry, CAS, Guangzhou, Guangdong 5 10640, China
  • Received:2003-03-06 Online:2004-02-01 Published:2020-08-14

摘要： 采用宏、微观结合研究方法. 对储集层砂体发育、岩石学特征、孔隙结构、物性及其影响因素进行了分析，根据大量岩心薄片、铸体、 物性等分析资料。结合近年来延安三角洲油气勘探进展情况，经统计分析提出了研究区储集层以长4+5及长61、长62油组相对较好，总体以三角洲前缘分流河道微相发育区最好的观点。储集空间以粒间溶蚀孔、粒间余孔为主，物性虽普遍偏差、属低孔低渗储集层.受压实作用影响明显，但与国内同类低孔低渗油田相比仍具有较大开发潜力。值得重视。

关键词: 三角洲, 储集层, 特征, 延安

Abstract: This paper highlights the reservoir sand body, petrology, pore structure, petrophysical properties and their effects in Yanan delta by way of macroscopic and microscopic study, including thin-section and cast thin-section analysis data, etc. Inte-grating with petroleum exploratory progress of the delta, this paper proposes statistically that Chang-4+5, Chang-6' and Chang-6?oil layers in target area are better than other layers. In general, the microfacies-developed zone of distributary channel in thedelta front is the most favorable for hydrocarbon prospecting.In spite of belonging to low porosity and low permeability reservoirwith compaction and dominated by intergranular dissolved pores and intergranular residual porosity, Yan'an delta still has greaterpotentials for petroleum development compared with the similar domestic fields.

Key words: delta, reservoir, characteristic, Yan'an

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