中国石油大学学报（自然科学版）2017，Vol.41Issue(2)：12-20,9.DOI:10.3969/j.issn.1673-5005.2017.02.002
层序格架内成岩特征差异及其成因机制
Sequence stratigraphy's control on diagenesis and its mechanisms
摘要
Abstract
With a comprehensive use of multiple data and calculation method of porosity evolution,the mechanisms and differences in diagenesis characteristics of sequence stratigraphy framework were studied.The results show that the differences in diagenesis include sequence boundary level and sequence unit level.Sequence boundary has strong effects on cementation and dissolution.Compared with the sequence unit,the content of cements and degree of dissolution near sequence boundary are significantly higher.For the sequence units,the sequence framework controls the sedimentary environment and characteristics of the sediments.After diagenesis,the strength of compaction,cementation and dissolution of each sequence unit may be differeut.For compaction,the sequence framework controls the characteristics of the sediments,such as grain sorting and composition.The strength of compaction of early transgressive system tract (E-TST) and early high stand system tract (E-HST) is higher than late transgressive system tract (L-TST).For cementation,the sequence framework controls the geochemical characteristics of the pore water,the source of calcium and the distribution of feldspar,and the content of cements of E-HST,E-TST and L-TST decreased in sequence.For dissolution,the sequence framework controls the geochemical characteristics of the pore water and the source of cements,and the degree of dissolution of L-TST,E-TST and E-HST increases in sequence.关键词
层序/成岩作用/东河砂岩/层序界面/层序单元Key words
sequence stratigraphy/diagenesis/Donghe sandstone/sequence boundary/sequence unit分类
能源科技引用本文复制引用
韩如冰,田昌炳,孙海航,王培俊,徐怀民,李维禄..层序格架内成岩特征差异及其成因机制[J].中国石油大学学报（自然科学版）,2017,41(2):12-20,9.基金项目
国家科技油气专项(2011ZX05009-003) （2011ZX05009-003）
