摘要
通过对风城地区风城组储集层的岩性及敏感性特征分析 ,认为该套储集层主要为一套静水沉积的含凝灰质、含有机质的泥岩、云质泥岩及泥质云岩。岩石致密 ,主要储集孔隙类型以裂缝为主 ,尤其是微裂缝较发育 ,晶间孔及次生溶孔次之。在成岩演化过程中 ,具不同程度的云化、硅化及硅硼钠石化 ,局部较强 ,云质主要为铁白云石。主要潜在敏感性矿物为含量较高的伊 蒙混层矿物和散布在岩石中的粉、细晶含铁白云石 ,主要潜在敏感性为水敏和酸敏。
Based on the analysis of characteristics of lithological properties and sensitivity of Fengcheng formation in Fengcheng District, it is considered as a set of quiet-water deposits consisting of tuffaceious and organic shale, dolomitic shale and argillaceous dolomite, characterized by tight rocks with the main porous type of fractures(especially microfractures), minor of intercrystal and secondary dissolved pores. During diagenetic process, metasomatism of dolomite and dioxide silicon occurred with different levels. Dolomite is mainly made up of ankerite. The main potential sensitive minerals include high-content mixture of smectite and illite, silty or fine-crystal ankerite. The main potential sensitivities are water sensitivity and acid sensitivity.
出处
《新疆石油学院学报》
2003年第3期11-12,17,共3页
Journal of Xinjiang Petroleum Institute
关键词
风城地区
岩性
云化
成岩演化
敏感性
Fengcheng District
lithological propertity
diagenetic evolution
sensitivity
