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| 姬塬地区长8油层组碳酸盐胶结物特征与成因 | |
| 引用本文： | 田亚铭,施泽进,李庭艳,梁晓伟,辛红刚,吴晓明,高翔.姬塬地区长8油层组碳酸盐胶结物特征与成因[J].西安石油大学学报(自然科学版),2011,26(3). |
| 作者姓名： | 田亚铭 施泽进 李庭艳 梁晓伟 辛红刚 吴晓明 高翔 |
| 作者单位： | 1. 成都理工大学地球科学学院,四川成都,610059 2. 成都理工大学"油气藏地质及开发工程"国家重点实验室,四川成都,610059 3. 长庆油田公司勘探开发研究院,陕西西安71002l 4. 长庆油田分公司第七采油厂,陕西西安,710021 5. 中国石油集团长城钻探工程有限公司录井公司,辽宁盘锦,124010 |
| 基金项目： | 国家自然科学基金重点基金项目 |
| 摘 要： | 碳酸盐胶结物是姬塬地区长8油层组储层砂岩中的主要自生矿物.薄片分析、碳氧同位素测试、电子探针成分分析表明该区碳酸盐胶结物主要类型为微晶无铁方解石、亮晶或连晶铁方解石与含铁方解石.微晶无铁方解石形成于成岩作用早期,含量高,但分布局限,与局部过饱和的碱性湖水沉淀有关.亮晶与连晶铁方解石或含铁方解石1δ3CPDB值为-4.1‰~-13.1‰,1δ8OPDB值为-19.7‰~-32.3‰,胶结类型多样,分布普遍,为该区主要方解石类型,其形成主要与烃源岩中泥岩矿物有机质演化有关,为中成岩A期—B期阶段产物,形成时代相对较晚.碳酸岩胶结作用对储层具有较为明显的负作用. |
| 关 键 词： | 碳酸盐胶结 碳氧同位素 长8油层组 姬塬地区 鄂尔多斯盆地 |
Characteristics and origin of the carbonate cements of Chang 8 member in Jiyuan area, Ordos Basin |
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| TIAN Ya-miag,SHI Ze-jin,LI Ting-yan,LIANG Xiao-wei,XIN Hong-gang,WU Xiao-ming,GAO Xiang.Characteristics and origin of the carbonate cements of Chang 8 member in Jiyuan area, Ordos Basin[J].Journal of Xian Shiyou University,2011,26(3). | |
| Authors: | TIAN Ya-miag SHI Ze-jin LI Ting-yan LIANG Xiao-wei XIN Hong-gang WU Xiao-ming GAO Xiang |
| Institution: | TIAN Ya-ming1,SHI Ze-jin2,LI Ting-yan3,LIANG Xiao-wei3,XIN Hong-gang3,WU Xiao-ming4,GAO Xiang5(1.College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,Sichuan,China,2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,3.Research Institute of Exploration and Development,Changqing Oilfield Company,Xi'an 710021,Shaanxi,4.No.7 Oil Production Plant,5.Lo... |
| Abstract: | Carbonate cements are the main autogenic mineral in the sandstone reservoir of Chang 8 member in Jiyuan area,Ordos Basin.The thin section analysis,carbon and oxygen isotope analysis and electron probe composition analysis results show that,the cements include microlite calcite,calcsparite and intergrowth ferrocalcite,and it is pointed out that microlite calcite is of high content,it is formed in the early stage of diagensis,but it is distributed in local region,which is related with the local precipitation ... |
| Keywords: | carbonate cement carbon and oxygen isotope Chang 8 member Jiyuan area Ordos Basin |
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