摘要
根据库车前陆盆地沉积物近源快速堆积、分选差的特征 ,以三端元方法分析了侏罗系不同压力体系下的黏土矿物演化特征 ,结果表明 ,在异常高压体系下 ,黏土矿物演化表现为伊利石相对质量分数大幅度增加 ,主要发生长石伊利石化并在孔隙中沉淀石英 ;在静水压力体系下 ,黏土矿物演化表现为高岭石相对质量分数大幅度增加 ,自生高岭石的形成为黏土矿物演化的主要特征 .
Based on the characteristics of rapid proximal sediment accumulation and poor sorting in foreland basin of Kuqu Depression, a 3 end-member method is used to analyze the clay mineral evolutionary characteristics in Jurassic system under different pressure systems. The result shows that under an abnormally high pressure systems illitic relative percentage content increases significantly for clay mineral evolution, main changes of feldspar turning to illite are caused and quartz deposits in holes; under a hydrostatic pressure system the clay mineral evolution presents that kaolinic relative percentage content increases significantly, authigenic kaolinite becomes the key characteristics of the clay mineral evolution.
出处
《大庆石油学院学报》
CAS
北大核心
2004年第3期14-16,共3页
Journal of Daqing Petroleum Institute
基金
"九五"国家重点科技攻关项目 ( 99-111-0 1-0 4-0 1)
关键词
异常高压
静水压力
储集层
黏土矿物
侏罗系
库车坳陷
abnormally high pressure
hydrostatic pressure
reservoir
clay mineral
Jurassic system
Kuqu Depression
