摘要
准噶尔盆地夏40井区储层致密。根据大量岩心、镜下薄片观察认为,风城组储集空间类型以裂缝型为主、孔隙不发育为特征。发育的裂缝类型有泄水缝、构造缝、层间缝和颗粒内微裂缝等类型,其中泄水缝和构造缝较为发育,颗粒内微裂缝次之。裂缝发育与构造、岩性有着密切的关系,夏40井区风城组勘探的关键是寻找裂缝发育带。由于基质孔隙不发育,酸化措施不能从根本上改善储层性质,建议对地层采取压裂改造。
Xia 40 well area in Zunger Basin has tight reservoirs. Core and microscopic chips observation shows that reservoir spaces of Fengcheng Formation are mainly fractured reservoirs with undeveloped pores. Fracture types include drainage fractures, structural fractures, interlayer fractures and microfractures in grains. Among them drainage fractures and structural fractures develop very much, and microfractures less. Fractures development is closely related to structure and lithology. Key problem of exploration in Fengcheng Formation in Xia 40 well area is to find fracture development belts. Matrix pores develop little, so acidizing method cannot improve reservoir property. Fracturing stimulation is recommended.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2006年第5期14-16,20,共4页
Petroleum Geology & Oilfield Development in Daqing
关键词
储集空间
泄水缝
构造缝与成岩缝
粒内缝和粒缘缝
夏40井区
reservoir space
drainage fracture
structural fracture and diagenetic fracture
inner-grain fracture and grain boundary fracture
Xia 40 well area
