柴达木盆地北缘地区第三系成岩作用研究  

Study on Diagenesis of Tertiary Reservoirs in the North Border of Caidamu Basin

作　　者：王鹏[1] 赵澄林[1] 

机构地区：[1]石油大学地球科学系,北京昌平102200

出　　处：《西安石油学院学报（自然科学版）》2002年第4期1-4,共4页Journal of Xi'an Petroleum Institute（Natural Science Edition)

摘　　要：为了认清柴北缘第三系有利储层的分布规律 ,在岩心观察、微观照片及分析化验的基础上 ,认为本区主要的成岩作用类型有胶结作用、交代作用及溶解作用 ,其中早期及中期的碳酸盐胶结物的溶解作用对本区第三系储层形成次生孔隙起着重要的促进作用 ,在碳酸盐质量分数小于 2 0 %的情况下 ,易产生有利的次生孔隙 .成岩作用的发育造成柴北缘地区第三系储层以剩余粒间孔 -粒间溶孔This paper is aimed at making clear the distribution of the favorable reservoirs in the area. Based on core description and microscope analysis, it is held that the main diagenesis types in the area are cementation, metasomasis and dissolution. The dissolution of early and medium carbonate cements plays a positive role in the generation of secondary pores, and it can improve the physical properties of the reservoirs if the content of carbonate cements is lower than 20%. The developed diagenesis causes the reservoirs being mainly the combination of remaining intergranular primary pores, secondary intergranular dissolved pores and intergranular solusion cracks.

关 键 词：柴达木盆地 北缘地区 第三系 成岩作用 研究 油气地质 胶结作用 溶解作用 次生孔隙 碎屑岩储层 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]