CHARACTERISTICS OF DIAGENETIC SECONDARY MINERALS IN THE SANDSTONE OF THE SONGLIAO BASIN
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摘要: 砂岩在成岩过程中,次生矿物多达20余种。次生石英、钠长石、方解石和浊沸石等的形成不同程度地影响了砂岩的储集物性。形成次生石英的SiO2主要来源于碎屑长石的溶解粘土矿物的转化。次生长石与长石的钠长石化过程有关,斜长石钠长石化始于成岩早期,而钾长石的钠长石化则需较高的成岩条件才能进行。次生方解石主要为成岩早期的无机CaCO3沉淀。浊沸石则是晚成岩阶段的稳定矿物,并与成岩晚期钠长石化有关。Abstract: During the diagenetic process of sandstone,secondary minerals were up to more than 20 kinds.The formation of secondary quartz,albitite,calcite and laumontite affected the storage physical properties of sandstone in different degrees.The SiO2 forming secondary quartz mainly came from the transformation of dissolved clay mineral in clastic feldspar.Secondary feldspar was related to the albitization process of feldspar,the albitization of plagioclase began at the early stage of diagenesis,and the albitization of K feldspar can only underway under higher diagenetic conditions.Secondary calcite was mainly inorganic CaCO3 deposit in the early stage of diagenesis.Laumontite was stable mineral in the late diagenetic stage,and was related to the albitization in the late stage of diagenesis.
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Key words:
- albitization /
- secondary feldspar /
- secondary quartz /
- diagenesis lake-facies sandstone /
- Cretaceous /
- the Songliao Basin /
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[1] 杨万里,高瑞祺,郭庆福,等.松辽盆地陆相油气生成运移和聚集[M].哈尔滨:黑龙江省科学技术出版社,1985.52-59. [2] 杜博民,等.松辽盆地北部储集层特征及成岩演变[J].石油与天然气地质,1984,5(2):122-131. [3] 邢顺荃.砂岩中自生石英和长石的演变特征及其地质意义[J].大庆石油地质与开发,1983,2(3):15-19. [4] 卓胜广,等.松辽盆地白垩系砂岩成岩作用[J].地质科学,1992,(增刊):216-223. [5] 柳益群,等译.碎屑岩的成岩作用[A].西安:西北大学出版社,1986.1-148. [6] 张哨楠,等.川西致密砂岩的石英次生加大及其对储层的影响[J].地质论评,1998,44(6):649-653. [7] Leader F,Park W.Porosity reduction in sandstone by quartz overgrowth[J].AAPG Bulletin,1986,70(11):1713. [8] 邢顺荃,等.大庆油田砂岩中自生粘土矿物的研究[J].大庆石油地质与开发,1987,6(1):11-17. [9] 周书欣,卓胜广.松辽盆地北部中-深层砂岩的次生孔隙研究[J].地质科学,1991,(1):48-58. [10] 饶纪龙.地球化学的热力学[M].北京:科学出版社,1979.77-107. [11] Boles J R.Active albitization of plagioclase[J].Gulf Coast Tertiary Am J Sci,1982,282:165-180. [12] 陆红.江苏地区侏罗-白垩系储层砂岩的成岩作用研究[J].石油实验地质,1997,19(3):228-231. [13] 辛国强.松辽盆地白垩系混合层粘土矿物及其地质意义[J].石油实验地质,1981,3(1):38-42. [14] 朱家祥,等.碎屑岩成油组合的成岩作用研究[J].石油实验地质,1988,10(3):223-230. [15] 陈强路.松辽盆地东南部物性盖层特征[J].石油实验地质,2000,22(2):175-183. [16] 邢顺荃,等.砂岩中浊沸石的形成条件及其地质意义[J].大庆石油地质与开发,1982,4(2):18-22. [17] 刘俊.松辽盆地南部影响储油物性因素的初步分析[J].石油实验地质,1982,4(2):121-128. [18] Kaiser W R.Predicting reservoir quality and diagenetic history in the Frio Formation(Oligocene)of Texas[J].AAPG Memoir,1984,(37):195.
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