碎屑岩粘土分离的一些改进

基金项目: 国家重点基础研究(973)项目(2001CB409804)

IMPROVEMENTS FOR CLAY SEPARATION FROM CLASTIC SAMPLES

摘要: 粘土实验样品的制备是粘土分析的基础,粘土提取多侧重于对结构松散的粘土较多的样品进行提取,对于碎屑岩中粘土的分离则相对困难。基于粘土分离原理,利用同步跟进分离提取方法可以高效提取碎屑岩粘土,并将样品分离成研究所需的各个粒级部分。在对42个采自库车凹陷的中生代碎屑岩样品的粘土分离实验中,利用计算出的合理提取速度,确定出了分离速度公式。利用同步分离技术对样品中粒径>20,20~5,5~2μm的部分进行了分离,并且进行了激光测试验证,实验提取的结果与测试结果吻合。
- 跟进提取 /
- 样品制备 /
- 粘土矿物 /
- 碎屑岩
Abstract: Sample preparation is the basic stage in clay experiment.The traditional method is limited to those loose-structured samples,thus unfit for samples with diagenesis.A synchronous picking-up method is used in sample preparation and analysis of 42 pieces of Mesozoic mudstone and sandstone from the Kuche Sag of the Tarim Basin.Samples are separated into 4 sections: 20 μm,20-5 μm,5-2 μm and 2 μm with parameters calculated.The results are well proved by laser analysis.
- synchronous picking-up method /
- Sample preparation /
- clay mineral /
- clastic rock

[1]	须藤俊男.粘土矿物学[M].北京:地质出版社,1981.1～33
[2]	Moore D M,Reynolds R C.X-ray diffraction and the identification and analysis of clay minerals[M].New York:Oxford University Press,1997.204～225
[3]	刘伟新.石油地质分析测试技术新进展[J].石油实验地质,2003,25(6):776～782
[4]	秦建中.油气地球化学新技术新方法[J].石油实验地质,2005,27(5):519～528
[5]	Bish D L,Reynolds R C.Sample preparation for X-ray diffraction:modern powder diffraction,reviews in mineralogy 20[M].Washington D C:Mineralogical Society of America,1989.73～99
[6]	吕一波.分离技术[M].北京:中国矿业大学出版社,2000.9～36
[7]	邓修.化学分离工程[M].北京:科学出版社,2000.1～11
[8]	苏金明.Matlab分析工具箱[M].北京:电子工业出版社,2000.498～509