摘要
卡塔尔东部二叠系Unayzah组属于鲁卜哈利富油气盆地的探索新领域,整体勘探程度较低,储层认识的不完善给勘探造成了很大风险,因而对卡塔尔东部Unayzah组储层特征及主控因素的研究非常重要。通过对Unayzah组取心井的铸体薄片、阴极发光薄片、扫描电镜、物性等数据进行详细分析,对Unayzah组储层特征及主控因素进行了研究。研究表明,发棕色光的石英颗粒含量越高,越有利于次生孔隙的形成;石英的次生加大是破坏性成岩作用;自生伊利石的形成对于砂岩原生孔隙的保存和次生孔隙的发育具有积极作用,有利于相对优质储层的形成。此外,影响Unayzah组砂岩储集层的主要因素是母岩性质、胶结作用和溶蚀作用。
The Permian Unayzah Formation of the east Qatar is new exploration field in petroliferous Rub'Al Khali Basin.Because of the low degree of exploration and imperfect understanding of the reservoir induce great risk for exploration,researching characteristics and main controlling factors of the Unayzah formation in the east Qatar are needed urgently.These are analyzed based on the date of analyses of mold thin sections,cathode luminescence thin sections,scanning electron microscopy,physical properties and so on.By means of this analyses in detail,it sums up parent rock,cementation and corrosion,which are the main controlling factors of the Unayzah sand reservoir.The more of the brown light quartz is,the more of secondary pore is;quartz secondary overgrowth is destructive diagenesis;authigenic illite is very good for primary porosity preservation and secondary pore formation,it forms high quality reservoirs.
出处
《长江大学学报（自科版）（中旬）》
CAS
2013年第3期4-7,111,共4页
Journal of Yangtze University(Nature Science Edition)
基金
国家科技重大专项(2011ZX05030-003-004)
关键词
卡塔尔东部
二叠系
Unayzah组
储层特征
主控因素
east of Qatar
permian
Unayzah Formation
reservoir characteristics
main controlling factors
