| 鄂尔多斯盆地镇北地区三叠系延长组长8油组储层特征 |
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| 作者单位： | 长江大学地球化学系 湖北荆州434023(郭玮，别旭伟，黄俨然)，长庆油田公司第二采油厂 甘肃庆阳745100(王轶平) |
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| 摘 要： | 鄂尔多斯盆地镇北地区延长组长8油层段是盆地重要的储集层之一。通过储层岩石学、储层物性、孔隙结构等方面对储层特征进行深入研究,研究结果表明,储层岩石类型主要为中细粒长石砂岩和岩屑长石砂岩,成分成熟度低,结构成熟度中—高;发育粒间孔隙、溶蚀孔隙、晶间孔等孔隙类型,喉道以中细喉—细喉为主。岩石物性总体较差,属低孔、低渗砂岩储层。研究结果对油田开发具有重要的指导意义。
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| 关 键 词： | 鄂尔多斯盆地 镇北地区 长8储层 孔隙结构 储层特征 |
RESERVOIR CHARACTERISTICS OF CHANG 8 OF YANCHANG FORMATION (TRIASSIC) INZHENBEI GAREA,ORDOS BASIN |
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| Authors: | GUO Wei WANG YI-ping BIE Xu-wei HUANG Yan-ran |
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| Affiliation: | GUO Wei1,WANG YI-ping2,BIE Xu-wei1,HUANG Yan-ran1 |
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| Abstract: | The Chang 8 reservoir in Zhenbei area in Ordos basin is an important oil-bearing reservoir bed.In this paper,the characteristics of reservoir strata was summarized and evaluated on the basis of petrological and physical features.The texture of porosity and the controlling features of reservoir strata.It was shown that the lithotypes were the medium-fine granular arkose and lithic arkose which had the characteristics of low compositional maturity,middle-high texture maturity,low porosity and permeability.The reservoir developed interparticle pore,solution pore and intercrystal pore.The main throat types was the medium throat and fine throat.The results give significant implications on oilfield development. |
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| Keywords: | Ordos basin Zhenbei area Chang 8 reservoir pore texture reservoir characteristics |
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