西南石油大学学报（自然科学版）Issue(5)：23-30,8.DOI:10.3863/j.issn.1674-5086.2013.05.004
鄂尔多斯盆地姬塬地区长9油层组成岩相特征
Diagenetic Facies Characteristics of the Chang 9 Oil-bearing Layer of the Upper Triassic Yanchang Formation in the Jiyuan Area,Ordos Basin
向芳 1陈康 1李凤杰 1孟繁星 1孟立娜1
作者信息
- 1. 成都理工大学沉积地质研究院，四川 成都 610059
- 折叠
摘要
Abstract
On the basis of comprehensive research,the characteristics of reservoir,diagenetic process and diagenetic facies of Chang 9 oil-bearing layer in Jiyuan area can be researched. The results indicate that:(1)the reservoir sandstones of the Chang 9 oil-bearing layer are mainly composed of coarser feldspar sandstones and lithic-feldspathic sandstones. Cementing materials are mainly chlorite and laumontite and matrix content is less. Reservoir spaces are mainly intergranular pores and intragranular dissolved pores;(2)reservoir sandstones are in the A to B stage of middle diagenetic phase. Weak compaction, limited filling of cements materials and authigenic minerals,and feldspar and laumontite dissolution have very important influ-ence on retention of original intergranular pores and forming of secondary dissolved pores;(3)three diagenetic facies can be divided:laumontite intragranular pore diagenetic facies,rim chlorite residual intergranular pore diagenetic facies and siliceous cementation diagenetic facies. The distribution of these diagenetic facies is related to supply of material sources,sedimentary characteristics and water dynamic action;(4)rim chlorite residual intergranular pore diagenetic facies and laumontite intra-granular pore diagenetic facies,which are connected with distributary channel sand body,are the most advantageous diagenetic facies in the area.关键词
姬塬地区/长9油层组/储层特征/成岩作用/成岩相划分Key words
Jiyuan area/Chang 9 oil-bearing layer/characteristics of reservoir/diagenetic process/diagenetic facies division分类
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向芳,陈康,李凤杰,孟繁星,孟立娜..鄂尔多斯盆地姬塬地区长9油层组成岩相特征[J].西南石油大学学报（自然科学版）,2013,(5):23-30,8.
