| 东营凹陷北部沙河街组四段深部储层多重成岩环境及演化模式 |
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| 引用本文： | 张善文,袁静,隋风贵,陈鑫.东营凹陷北部沙河街组四段深部储层多重成岩环境及演化模式[J].地质科学,2008,43(3):576. |
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| 作者姓名： | 张善文 袁静 隋风贵 陈鑫 |
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| 作者单位： | 1. 中国石油化上股份有限公司胜利油田分公司, 山东东营, 257000;2. 中国石油大学地球资源与信息学院, 山东东营, 257061 |
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| 摘 要： | 主要通过薄片鉴定、扫描电镜观察、包裹体分析、粘土矿物分析、镜质体反射率测试和岩心物性分析等手段,结合构造发育史和有机质热演化史等研究成果,以揭示东营凹陷北带古近系深部碎屑岩储层成岩环境及演化模式为目的展开研究工作。结果表明:东营凹陷北带古近系深部碎屑岩储层存在酸性、碱性和酸性碱性交替等多重成岩环境。酸性成岩环境以碳酸盐矿物溶解、长石溶解蚀变为高岭石并伴生石英次生加大等为标志,碱性成岩环境以石英质颗粒及其次生加大边溶解、长石次生加大和晚期碳酸盐矿物沉淀为标志。研究区古近系深部碎屑岩储层成岩环境由浅至深大致经历了碱性—酸性—酸性碱性交替(局部碱性较强)—碱性—弱碱性的演化过程,并建立了沙河街组四段的成岩演化和储层改造模式。
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| 关 键 词： | 碱性成岩环境 酸性成岩环境 环境演化 深部储层 古近系 东营凹陷 |
| 收稿时间： | 2007-09-26 |
| 修稿时间： | 2007-09-26; |
Multiple diagenetic environments and evolvement model in deep formation of the 4th Member, Shahejie Formation in the northern Dongying Sag |
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| Zhang Shanwen,Yuan Jing,Sui Fenggui,Chen Xin.Multiple diagenetic environments and evolvement model in deep formation of the 4th Member, Shahejie Formation in the northern Dongying Sag[J].Chinese Journal of Geology,2008,43(3):576. |
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| Authors: | Zhang Shanwen Yuan Jing Sui Fenggui Chen Xin |
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| Institution: | 1. Shengli Oilfield Branch Company, China Petroleum & Chemical Corp., Dongying, Shandong 257000;2. College of Earth Resources and Information, China University of Petroleum, Dongying, Shandong 257061 |
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| Abstract: | By thin-section analysis,scan electricity microscope observation,inclusion analysis,Ro test and reservoir physical parameters' analysis,and combining histories of tectonic development and organic maturation,the diagenetic environment and diagenetic evolvement model of clastic rocks in deep formation of the Paleogene in the northern Dongying Sag were studied.It was recognized that the reservoir in deep formation might have multiple diagenetic environments,such as acidic environment,alkali environment and alternating one of acidic and alkali environments.The forepart carbonate and feldspar dissolved but kaolinite and autogenic quartz developing in the same time were symbols of the acidic diagenesis environment.The alkali diagenetic environment was indicated by quartz grain and secondary quartz outgrowth cement dissolved,secondary feldspar outgrowth cement and carbonate deposited in the same time.The diagenetic environments of clastic reservoirs of the Paleogene in the northern Dongying Sag underwent a process from alkali-acidic-alternating of acidic and alkali(obvious alkali locally)-alkali to infirm alkali environments.The study about diagenetic environments should be in favor of finding second pore which had different causes of formation,and finding out valuable clastic reservoirs in deep formation.To sum up,the diagenetic evolvement and reservoir reconstruct model in the 4th Member,Shahejie Formation in the northern Dongying Sag were established. |
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| Keywords: | Alkaline diagenetic environment Acidic diagenesis environment Evolvement model Deep reservoir Paleogene The Dongying Sag |
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