摘要
苏里格南区位于苏里格气田南部，是下一步气田产能建设的重要接替区，区内上古生界、下古生界复合含气，上古生界主力含气层段为二叠系石盒子组盒8段。盒8段储层岩石类型以岩屑质石英砂岩和石英砂岩为主，基本类似于苏里格气田其他区块；储层孔隙类型以溶孔和晶间孔为主，孔隙度主要分布在2％-12％之间，平均值为7．2％；渗透率主要分布在0．01-1．0mD之间，平均值为0．768mD，为典型的低孔、低渗储层。沉积、成岩系统研究认为，河道和滩坝沉积为区内优势沉积相带，溶蚀作用是改善砂岩储渗条件的最关键因素。
The southern Sulige gasfield is the important relay area of the next step deliverability construction of the gasfield, with com- pound gas-bearingness of the upper and lower palaeozoie. The main gas-bearing reservoir intervals are the He8 Member of Permian Shihezi Formation. The reservoir rock types of He8 Member are mainly lithic quartzose sandstone and quartzose sandstone, basically similar to other blocks of Sulige gasfield. The types of pores are mainly dissolution pores and inter-crystalline pores. The porosity is mainly 2% to 12%, with an average porosity of 7.2%. the permeability is mainly 0.01 mD to 1.0 mD, with an average of 0.768 mD. They are typically low-permeability and low-porosity reservoirs. It is considered through systematic researches of deposition and dia- genesis that the channel and beach-bar sedimentation are the dominant sedimentary facies tracts of the south district. The corrosion is the most critical factor for improving the physical property of sandstone reservoirs.
关键词
苏里格南区
盒8段储层
储层特征
主控因素
沉积作用
成岩作用
southern district of Sulige gasfield
He8 Member reservoir
reservoir characteristics
main control factors
sedimentation
di-agenesis
