摘要
根据岩心观察、铸体薄片及压汞曲线等资料,对研究区储层特征进行研究,并根据储层特征总结出储层分类标准,利用多井对比对研究区储层进行综合分类评价。研究结果表明,TZ气田石炭系含砾砂岩段岩石主要为岩屑砂岩和岩屑石英砂岩;储集空间以原生粒间孔为主,并发育有较多的微裂缝;孔隙结构类型主要发育中孔中粗喉型和中小孔中细喉型。从纵横向和平面上的储层综合评价表明,研究区储层类型以Ⅱ类和Ⅲ类为主,属于低孔、低渗储层,总体表现为中等-差储层特征。
Based on core observation,cast thin section,intrusive mercury curve,the resverior characteristics have been studied and on this basis,by using multiwell comparison,the criterion of reservoir classification have been summarized.The result shows that the lithologies of the gravel-bearing sandstone Formation of carboniferous system in TZ gasfiled are mainly lithic sandstone and lithic silicarenite;the reservoir spaces mainly are primary interparticle pore and relatively more crevice can be seen in this area;The mainly texture of the reservoir pores are medium,miniature pore throat.The region of interest reservoir are mainly of typeⅡ and Ⅲ,belonging to lowporosity and lowpermeability reservoir and showing the characteristics of middle to worse resvervoir.
出处
《新疆石油天然气》
CAS
2012年第4期16-21,4-5,共6页
Xinjiang Oil & Gas
关键词
TZ气田
含砾砂岩段
储层特征
储层综合评价
reservoir characteristics
comprehensive evaluation
gravel-bearing sandstone Formation
TZ gasfield
