广安须家河组二段和四段储层改善因素分析

四川前陆盆地隆起带上须家河组储层大多数为超致密储层.这种储层条件一般不利于形成大型气藏,但由于储层演化过程中的成岩矿物和溶蚀作用,使得储层条件得到很大的改善,并形成大量的岩性气藏.广安地区须二、须四段储层即为典型的低孔渗油气藏,通过岩心薄片观察、数据分析不同层段储层岩性与物性的变化,从而研究须二、须四段储层条件得到改善的不同因素,加深储层认识,加快川中地区油气资源勘探步伐.

Analysis of Improvement Factor about Second and Forth Section of Xujiahe Formation in Guang＆#39;an Area

Most of Xujiahe formation reservoir on Sichuan foreland basin uplift belt is super tight type. Generally, this type deposit is adverse to large gas reservoir forming, but diagenetic minerals and dissolution effect in reservoir evolution process vastly improved the reservoir condition to form the lithologic gas reservoir. Second and Forth section of Xujiahe formation deposit in Guang＇an is typical example of Low permeability reservoirs. Through core wafer ohservation, data analysis of different reservoir lithology and physical property change at different intervals and various improvement factors of Second ＆.Forth section at Xujiahe formation reservoir, we get deepen understanding of reservoir stratum, which is helpful to the exploration of oil and gas resources in local area.