摘要
鄂尔多斯盆地山西组储集岩主要为石英砂岩、岩屑石英砂岩,该储层砂岩是典型的低孔低渗储集岩。依据岩心观察及常规薄片鉴定和沉积埋藏史,综合分析了鄂尔多斯盆地山西组砂岩的成岩作用类型及其特征。研究表明,鄂尔多斯盆地山西组储层岩石具有粒度粗、成熟度高的特点,研究区山西组储层成岩作用主要有压实作用、压溶作用、胶结作用和交代作用等,是控制该区储层物性特征的关键因素,其中压实作用、胶结作用是导致储层致密化的主要影响因素。
The reservoir rocks are mainly quartz sandstones and lithic quartz sandstones in Shanxi Formation of Ordos Basin.The reservoirs are typical low-porosity and low-permeability ones.Based on the core observation,conventional thin section analysis and the thin section fractional analysis,it comprehensively analyzes the sandstone diagenetic types and features of the Shanxi Formation,Yichuan Area in the southeast of the Ordos Basin,combined with the sedimentary burial history and the regional geology characteristics.The result shows that the its diagenesis types are the compaction,the pressure solution,the cementation,metasomasis,alteration,denudation and so on.It'sclear that the diagenesis is the key factor to control the physical property in this area.The compaction and cementation are the main factors that cause the reservoir closeness development.The denudation and metasomasis have an effect on the reservoir pore enlargement at the late stage.
出处
《长江大学学报（自科版）（中旬）》
CAS
2013年第1期22-24,5,共3页
Journal of Yangtze University(Nature Science Edition)
作者简介
张堃（1987-）。男，硕士生，现主要从事石油地质学方面的研究。
