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不同成岩条件下汕气充注对碳酸盐岩 成岩作用的影响
葛云锦,陈勇,周瑶琪
(中国石油大学地球资源与信息学院,山东东营257061)
摘要:
设计不同温度、油水比及不同油品的人工合成方解石烃类包裹体试验’对合成烃类包裹体的岩相学特征、均一 温度、荧光测试结果进行分析,讨论油水比、温度及油品性质等因素对方解石成岩作用的影响。试验表明:油气条件 下方解石晶体能够继续生长捕获烃类包裹体,但受到了一定抑制,抑制作用随着含油饱和度增高而增强;油气可能 会完全终止矿物的生长,但边界条件还有待于进一步确定;温度可能会引起储层成岩环境酸碱度的变化,对方解石 生长产生不同影响;轻质油对方解石晶体生长的抑制作用要相对大于重质油的。
关键词:  成岩作用  烃类包裹体  人工合成  方解石
DOI:
分类号:
基金项目:国家"863”计划项目(2007AA06Z210);国家自然科学基金项R (40072042,40072081);山东省S然科学基金项目(Y2008E16, Y2008E25);中国石油天然气集团公司创新基金项目(07E1018)
Effects of hydrocarbon emplacement on diagenesis of carbonatite in different conditions
GE Yun-jin,CHEN Yong,ZHOU Yao-qi
(College of Geo-Resources and Information in China University of Petroleum, Dongying 257061,China )
Abstract:
Experiments in different temperature, oil/water ratios and oils were carried out to synthesize hydrocarbon inclusions in calcite. Through analyses of petrographical character, homogenization temperature, and microfluorometric results of synthetic hydrocarbon inclusions, the effects of oil/water ratios,temperature and oil property on diagenesis of calcite were researched. The results from the experiments show that calcite could continue growing and trapping hydrocarbon inclusions under hydrocarbon emplacement, but the growth was restrained by hydrocarbon. The retarding effect became more intense along with oil saturation increasing. Oil and gas might terminate the growth of mineral but the boundary condition needs further confirmation. The PH value in reservoir might change because of temperature change and it brings different impacts on growth of calcite. The inhibitory effect of light oil on the growth of calcite was relatively more intense than that of heavy oil.
Key words:  diagenesis  hydrocarbon inclusions  artificial synthesis  calcite
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