摘要
三塘湖盆地芦草沟组源岩条件优越,储层致密但分布稳定,是具备优良条件的致密油勘探目标。储层研究表明,储层岩性复杂,以白云岩、凝灰岩、灰岩、泥岩及其过渡性岩性为主且相变剧烈,孔隙以晶间微孔及有机孔为主且普遍致密,但微裂缝及溶蚀孔有效改善储层渗流条件。指出以亮晶及粒屑碳酸盐岩为主的储层发育区条件较好,当前条件下有利"甜点"区主要位于凹陷北部缓坡带白云岩发育区。
The source rock of Lucaogou Formation in Santanghu Basin is good, and it's the exploration target oftight reservoir. The study of reservoir shows that the lithology is mainly as dolomite, tuffs, limestone and mud-stone. The pore contains intercrystalline micropore and organic pore. The pore of reservoir is low. But microcracks and dissolution pores improve the flow condition. So the reservoir which develops sparite carbonate andgrained Carbonate is good. The sweet spot is located in the gentle slope of north depression where develops dolo-mite.
出处
《新疆石油天然气》
CAS
2017年第1期1-5,共5页
Xinjiang Oil & Gas
基金
国家青年自然科学基金(41202101)
中国石油科技重大专项(2012E-34-08)
关键词
三塘湖盆地
芦草沟组
致密储层
甜点
Santanghu Basin
Lucaogou Formation
Tight reservoir
Sweet spot
