[1]郭艳琴,冯娟萍,欧阳征健,等.姚店油田北区长6油层组储层特征与分类评价[J].西安科技大学学报,2010,(02):197-201.
 GUO Yan-qin,FENG Juan-ping,OUYANG Zheng-jian,et al.Characteristics and assessment of Chang 6 sandstone reservoirs in Yaodian Oil Field[J].Journal of Xi'an University of Science and Technology,2010,(02):197-201.
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姚店油田北区长6油层组储层特征与分类评价()
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2010年02期
页码:
197-201
栏目:
出版日期:
2010-03-29

文章信息/Info

Title:
Characteristics and assessment of Chang 6 sandstone reservoirs in Yaodian Oil Field
文章编号:
1672-9315(2010)02-0197-05
作者:
郭艳琴1冯娟萍2欧阳征健3刘昊伟4余 芳3
1.西安石油大学 油气资源学院,陕西 西安 710065; 2.西安科技大学 地质与环境学院,陕西 西安 710054; 3.中国石油 长庆油田分公司 勘探开发研究院,陕西 西安 710021; 4.中国石油勘探开发研究院,北京 100083
Author(s):
GUO Yan-qin1 FENG Juan-ping 2 OUYANG Zheng-jian3LIU Hao-wei4YU Fang3
1.Institute of Oil and Gas Resources,Xi'an Shiyou University,Xi'an 710065,China; 2.College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, China; 3.Reseach Institute of Petroleum Exploration and Development,PetroChina Changqing Oilfield Company,Xi'an 710021,China; 4.Research Institute of Petroleum Exploration and Development of China, Beijing 100083,China
关键词:
姚店油田北区 成岩作用 孔隙类型 孔隙结构 储层分类
Keywords:
Yaodian Oilfield diagenesis porosity type porosity structure classification of reservoirs
分类号:
TE122.2
文献标志码:
A
摘要:
利用砂岩薄片、铸体薄片、扫描电镜、压汞等,对鄂尔多斯盆地姚店油田北区上三叠统延长组长6砂岩储层特征进行了分析评价。研究结果表明,长6储集层砂岩主要为细粒长石砂岩,经历了复杂的成岩作用,早期成岩阶段的压实作用造成砂岩原生孔隙丧失; 碳酸盐和石英、长石的次生加大胶结是降低储层物性的主要胶结作用,而碎屑颗粒周围绿泥石薄膜的发育则有效地保存了部分原生粒间孔隙; 溶蚀作用产生的次生孔隙可大大改善本区砂岩储层的物性条件。孔隙主要为残余粒间孔和溶孔。孔隙小,分布状况差,结构复杂。喉道细小且不均匀,结构以小孔细喉型为主,是典型的低孔低渗储层。
Abstract:
Based on the data analysis of thin-section,casting lamella,scan electronmicroscope and intrusive mercury etc,the characteristics and assessment of Chang 6 sandstone reservoirs are researched on the Upper Triassic of northern Yaodian Oilfield in Ordos Basin.It was shown that the sandstones are granule arkose,which were formed by complex diagenesis with compaction,cementation and dissolution. It is suggested that the mechanical compaction resulted in lossing primary porosity in the early diagenesis stage,and carbonate cement,quartz,feldspar overgrowths are the main cementation that reduced the reservoir quality of the sandstones.But due to thin film of chlorite occurred around clastic granules,a part of primary intergranular pore were preserved,and a large of secondary pore were formed with dissolution,which improved the reservoir quality for the sandstones. It was also shown that the main types of pores are remnant intergranular pores and secondary pores.The reservoirs are poor in pore throat distribution,complex in structure,small in throat and their evident character is heterogeneity and the type of the pore structure is mainly of small pore and throat,and they are the typical low permeable reservoirs.

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备注/Memo

备注/Memo:
基金项目: 陕西省教育厅专项科研计划项目(09JK567) 通讯作者: 郭艳琴(1972-),女,陕西佳县人,讲师,主要从事石油地质研究.
更新日期/Last Update: 2010-03-29