摘要
以岩心观察为基础,综合运用薄片、扫描电镜、粘土矿物射线衍射分析、物性分析等测试手段,对珠江口盆地东沙隆起珠江组储层特征进行深入研究。东沙隆起珠江组由下向上发育无障壁滨岸、碳酸盐岩台地和浅海3类沉积相,其中以碳酸盐岩台地沉积为主,包括台地边缘礁、台地边缘滩、台内礁、台坪及斜坡塔礁等沉积亚相。珠江组储层岩石类型以生物礁灰岩和生屑灰岩为主,储集空间以次生孔隙为主,其次为原生粒间孔、生物体腔孔等原生孔隙和裂缝,普遍存在非均质性。珠江组储层发育受海平面升降、沉积相和成岩作用的三重影响。珠江口盆地珠江组优选有利储集相带为流花地区台地边缘礁及生屑滩,较有利储集相带为惠州地区台地边缘礁、生屑滩及陆丰地区台内点礁、生屑滩。
The Zhujiang formation in Dongsha uplift of the Pear River Mouth Basin develops three sedimentary facies:littoral facies, carbonate platform,shallow sea continental shelf facies,among which,the carbonate platform is the main sedimentary facie which is consisted of reef,bioclast bank and plate.This paper thoroughly studied the carbonate reservoir of the Zhujiang formation from reservoir sedimentology based on core observations by applying various measurements,such as analyses of normal thin-section,cast thin-sec tion,scanning electron microscope,X-ray diffraction of clay minerals,and this paper indicates that the main reservoir spaces are sec ondary pores,followed by primary intergranular pore,biological coelom hole and other primary porosity.By combining the measurement results with sedimentary evolution and diagenetic characteristics of basin,this study indicates that the reservoir's development is influ enced by the change of the sea-level,sedimentary facies and diagenesis.The platform edge and bioclast bank in Liuhua area are the fa vorable reservoir belt,and,the reef and bioclast bank of platform edge or platform point reef and bioclast bank of internal platform in Huizhou and Lufeng area are the less favorable reservoir.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2013年第4期10-16,111,共7页
Petroleum Geology and Recovery Efficiency
基金
国家科技重大专项"大型油气田及煤层气开发"之"海洋深水区油气勘探关键技术"(2008ZX05025-003)
关键词
珠江组
储层特征
成岩作用
控制因素
东沙隆起
珠江口盆地
Zhujiang formation
reservoir characteristic
diagenesis
controlling factors
Dongsha uplift
Pear River Mouth Basin
